Qualification: 
Ph.D, M.E, B-Tech
Email: 
dg_kurup@blr.amrita.edu
Phone: 
[+91] [0] 7829080757

Dr. Dhanesh G. Kurup is currently working as Professor with Department of Electronics and Communication Engineering and leads the RF and Wireless Systems research Laboratory at Amrita Vishwa Vidyapeetham, Bengaluru campus. Dr. Kurup has a mix of both industry and academic research experience. He pioneered the design of unequally spaced antenna arrays, active-reflect-antenna-arrays for spatial power combining which are widely cited by scientific publications. He has also pioneered and patented ultra-wide-band (UWB) based passive chip-less RFID technology, while working for Wavelogics AB, Sweden. His expertise include all aspects of active and passive RF circuits, computational electromagnetics, signal processing and behavioral modeling and simulation of wireless systems. Prior to taking his Ph.D. degree, he was a Scientist-Engineer with Satellite Center, Indian Space Research Organization (ISRO), Bangalore for about two years. He also worked as a guest researcher at University of Rennes, France for three years. He was with Wavelogics AB, Sweden for eight years and since then as consultant for one year.

Education

  • 2003: Ph.D.
    Uppsala University, Sweden and University of Rennes France.
  • 2000:  Licentiate Degree in Signal Processing, 
    Uppsala University, Sweden
  • 1995: M.Tech in Microwave and Radar,
    Indian Institute of Technology, Roorkee, India
  • 1991: B. Tech in Electronics and Communication Engineering,
    Calicut University, Kerala, India.

Professional Appointments

Year Affiliation
2012- Professor,
Amrita Vishwa Vidyapeetham , Bengaluru-560035, India
2003-2012 Research Lead and Consultant for one year with Wavelogics AB,
Sweden
2000-2003 Guest Researcher,
University of Rennes, France.
1995-1997 Scientist - Engineer with Indian Space Research Organization,
Bengaluru

Research Focus

  • RF sub-systems related to RFID, Radar or Communication systems.
  • Modeling and Performance simulation of Physical layer in Wireless systems.
  • RF circuits (PA, LNA, Oscillators) Antennas (active and passive), Antenna arrays.
  • Computational electromagnetics.
  • Macro-modeling of Interconnects and transmission lines (of large bandwidth ) in ICs
  • Applied signal processing ( applying interesting algorithms/ tools to the above areas).

Membership in Professional Bodies

  • Senior member IEEE

Certificates, Awards & Recognitions

  • Research Grant: Swedish Strategic Foundation 1997-2003 for doing Ph.D, Uppsala University, Sweden
  • Publication Award: IEEE Bangalore chapter, 2015.

Publications

Publication Type: Journal Article

Year of Publication Title

2021

Sanjika Devi R V and Dr. Dhanesh G. Kurup, “A Novel Baseband Generation Method for Modeling RF Power Amplifiers for Bit Error Rate Computations”, Wireless Pers Commun, 2021.[Abstract]


In this article, we present a novel method for modeling radio frequency (RF) power amplifiers (PAs). The proposed method for baseband data generation introduced in this paper, enables us to specify operational power range and bandwidth criteria of the PA, yielding a generic power amplifier model, which includes both memory effects as well as non-linearity of the PA. Further, we show that, the modeling approach is useful for bit error rate (BER) computations with PA distortions for any digitally modulated signal. Estimated BER using the proposed PA model for the test case of QPSK and 16-QAM, shows a significant difference in BER at high input back-offs due to memory effects, compared to the conventional non-linear PA models.

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2020

S. Pala, Palliyani, S., Himdi, M., Lafond, O., and Dr. Dhanesh G. Kurup, “Localization of unknown electromagnetic source using 3D-antenna arrays”, International Journal of Microwave and Wireless Technologies, vol. 12, pp. 86–94, 2020.[Abstract]


In this article, we propose three-dimensional antenna systems for determining the position of electromagnetic radiation source at an unknown location. Received signal power at different antennas and position of radiation source are used as training data for Artificial Neural Network (ANN). It is found that, a well-trained ANN is computationally efficient and capable of predicting the unknown location of the source, from the received power pattern. Two multi-antenna systems with geometry in three dimensions, namely the cube and frustum, are considered in this paper. Further, test results of the proposed method for random positions of electromagnetic source, spanning a hemisphere, are presented for the geometries considered.

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2020

S. Pala, Sarada Jayan, and Dr. Dhanesh G. Kurup, “An accurate UWB based localization system using modified leading edge detection algorithm”, Ad Hoc Networks Volume, vol. 97, 102017, 2020.[Abstract]


Ultra-wideband (UWB) localization systems have gained wide attention in precise indoor positioning applications, due to the usage of high bandwidth signals. We propose a modified leading edge detection algorithm for estimating the time of arrival (TOA) of the received UWB signal. The proposed method performs well even under low signal-to-noise ratio (SNR) conditions. We simulate a UWB localization system using the proposed algorithm and evaluate its performance under additive white Gaussian noise (AWGN). We study the influence of tuning parameters of the proposed algorithm on the positioning accuracy. We evaluate 1D and 2D positioning accuracies of the localization system using the optimal tuning parameters of the proposed algorithm. We further evaluate the performance of the proposed algorithm in multipath conditions. Simulation results show that the proposed algorithm provides enhanced positioning accuracy compared to the previously published methods including the state-of-the-art methods. We improve the positioning accuracy of the localization system further by deploying more base stations.

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2020

Parul Mathur, Dr. Amrita Thakur, and Dr. Dhanesh G. Kurup, “An artificial neural network-based non-destructive microwave technique for monitoring fluoride contamination in water”, Journal of Electromagnetic Waves and Applications, vol. 34, pp. 1-11, 2020.[Abstract]


This article presents a novel non-destructive microwave technique for predicting fluoride contamination in pure water. The proposed microwave-based sensing technique uses an open-ended coaxial probe (OECP) microwave sensor for monitoring fluoride concentration in water. The sensor output is the input of Artificial Neural Network (ANN) for predicting the complex dielectric constant of contaminated water, which has direct correlation with fluoride contamination in water. The ANN is trained through analytically generated sensor output for various lossy liquid materials and tested for experimental data obtained through laboratory prepared samples. Hence, the proposed technique has the capability to compute the amount of fluoride contamination faster, when compared to analysis only method. The results shows that a well-trained ANN is computationally efficient and capable of predicting the amount of fluoride level in the pure water. The results also has good agreement with the data published in the literature at room temperature.

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2020

Sanjika Devi R V, Kalyan, R., R, B. K., and Dr. Dhanesh G. Kurup, “Optimization of digital predistortion models for RF power amplifiers using a modified differential evolution algorithm”, AEU - International Journal of Electronics and Communications, vol. 124, p. 153323, 2020.[Abstract]


This paper, investigates and presents the optimal parameter identification of digital pre-distortion (DPD) models for radio frequency power amplifiers (RF PAs) using a modified differential evolution (MDE) based optimization algorithm. Compared to the conventional exhaustive search method which is computationally intensive, our proposed approach enables the identification of a best-fit DPD model from a combinatorially large model space in a short time. In addition, applying information criteria based objective functions in the optimization process enables us to achieve sparse selection of dynamical models, which balances the model accuracy and model complexity. Experimental validation on a GaN based class AB power amplifier illustrates that, our proposed approach was able to accurately identify complexity reduced optimal DPD models without compromising the modeling accuracy.

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2019

A. Hachi, Lebbar, H., Himdi, M., and Dr. Dhanesh G. Kurup, “Directional Ultra-wideband monopole antennas”, Far East Journal of Electronics and Communications, vol. 21, pp. 53-65, 2019.[Abstract]


This paper deals with a directional conformal disk monopole antenna printed on a flexible substrate. The antenna is mounted on cylindrical Roacell foam surfaces of various radii, and it is studied and compared to flat monopole disk which provides good performances: impedance match for a large bandwidth, increasing gain, a null in the broadside direction disappears in radiation pattern. The experimental results are in good agreement with the simulations provided by CST. Those proposed antennas would be a good candidate for the directional antenna application.

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2019

Parul Mathur, Perez, M. D., Augustine, R., and Dr. Dhanesh G. Kurup, “NDECOAX: A software package for nondestructive evaluation of stratified dielectric media”, SoftwareX, vol. 9, pp. 187-192, 2019.[Abstract]


This article presents a software package based on the C++ language for accurate computation of material properties of a stratified media using an open ended coaxial probe (OECP). Since OECP is one of the most commonly used sensors for evaluation of materials today, the program developed can be customized for real time nondestructive evaluation of materials. The main contribution of this article is a computationally efficient software for solving an infinite domain integral with multiple singularities based on plane wave spectrum theory. The computed results for aperture admittance of the coaxial probe using the developed software show good agreement with both measurements and results from a commercial solver using the finite element method (FEM). It is also proved that, the execution time per frequency point of the developed code is much faster than FEM. © 2019 The Authors

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2019

V. S. Kumar and Dr. Dhanesh G. Kurup, “A new broadband magic tee design for ka-band satellite communications”, IEEE Microwave and Wireless Components Letters, vol. 29, pp. 92-94, 2019.[Abstract]


This letter deals with the design, electromagnetic simulation, and test results of a novel broadband Magic Tee for Ka-band (25.5-27 GHz) satellite communications. Novel matching structure is implemented in the Magic Tee, which results in better electrical performances over broad bandwidth. The designed Magic Tee is realized using electro-discharge machining fabrication technique for achieving stringent dimensional accuracy. The measured bandwidth of the Magic Tee is approximately 16% with a maximum measured in-band insertion loss of 0.2 dB. The simulation results of the developed Magic Tee are compared with measured results using a vector network analyzer showing excellent agreement. The Magic Tee introduced in this letter can be used for designing a monopulse comparator for low earth orbit satellite tracking applications since the amplitude imbalance and phase imbalance of the Magic Tee are negligible, which result in excellent tracking performances. © 2001-2012 IEEE.

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2018

S. R. Bhavanam, Sanjika Devi R V, Mudulodu, S., and Dr. Dhanesh G. Kurup, “Information criteria based optimal structure identification of RF power amplifier models”, Journal of Intelligent and Fuzzy Systems, vol. 36, pp. 2137-2145, 2018.[Abstract]


This article presents a novel information criterion based optimal model parameter selection algorithm for behavioral modeling of Radio Frequency Power Amplifiers (RF PAs). The proposed approach uses Particle Swarm Optimization (PSO) along with the Information Criterion (IC) based cost functions for determining the most parsimonious model from all the available combinatorial models. The proposed technique thereby helps in deriving complexity reduced models without compromising modeling accuracy. The validation of the proposed approach was carried out by modeling a GaAs based PA driven by a 20-MHz generic random input signal. It was shown that, the model performance was maintained while its complexity in terms of number of coefficients was reduced by around 35% in the considered cases. In addition, the proposed PSO based approach helps in deriving the most parsimonious PA model in a very short amount of time compared to the conventional sweep technique. © 2019 - IOS Press and the authors.

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2018

V. S. Kumar and Dr. Dhanesh G. Kurup, “A new broadband Magic Tee design for Ka-Band Satellite Communications (Accepted)”, IEEE Microwave and Wireless Components Letters, 2018.

2018

S. R. M. Shah, J. Velander, Parul Mathur, M. D. Perez, N. J. Asan, Dr. Dhanesh G. Kurup, T. J. Blokhuis, and R. Augustine, “Split-Ring Resonator Sensor Penetration Depth Assessment Using In Vivo Microwave Reflectivity and Ultrasound Measurements for Lower Extremity Trauma Rehabilitation”, Sensors, vol. 18, pp. 636-547 , 2018.[Abstract]


In recent research, microwave sensors have been used to follow up the recovery of lower extremity trauma patients. This is done mainly by monitoring the changes of dielectric properties of lower limb tissues such as skin, fat, muscle, and bone. As part of the characterization of the microwave sensor, it is crucial to assess the signal penetration in in vivo tissues. This work presents a new approach for investigating the penetration depth of planar microwave sensors based on the Split-Ring Resonator in the in vivo context of the femoral area. This approach is based on the optimization of a 3D simulation model using the platform of CST Microwave Studio and consisting of a sensor of the considered type and a multilayered material representing the femoral area. The geometry of the layered material is built based on information from ultrasound images and includes mainly the thicknesses of skin, fat, and muscle tissues. The optimization target is the measured S11 parameters at the sensor connector and the fitting parameters are the permittivity of each layer of the material. Four positions in the femoral area (two at distal and two at thigh) in four volunteers are considered for the in vivo study. The penetration depths are finally calculated with the help of the electric field distribution in simulations of the optimized model for each one of the 16 considered positions. The numerical results show that positions at the thigh contribute the highest penetration values of up to 17.5 mm. This finding has a high significance in planning in vitro penetration depth measurements and other tests that are going to be performed in the future.

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2018

K. Vrinda, Dr. N.S. Murty, and Dr. Dhanesh G. Kurup, “Performance of Vector Fitting Algorithm Applied to Bandpass and Baseband Systems”, Circuits, Systems, and Signal Processing, pp. 1-18, 2018.[Abstract]


This article presents the performance evaluation of Vector Fitting Algorithm (VFA) from a system identification perspective. In this paper, VFA has been first applied to known baseband and bandpass systems such as Butterworth lowpass and bandpass filters to analyze the algorithm's pole-residue extraction ability for band-limited noisy data. The poles identified by the algorithm for different bandwidths and noise powers are compared with the actual system poles of the baseband and bandpass systems. It is concluded that the algorithm is capable of identifying the actual system poles even if the capture bandwidth is less than the 3 dB bandwidth, which is a significant observation of this paper. It is also seen that the system identification performance with noisy data is better for baseband systems when compared to bandpass systems. Further, a practical investigation has been done to evaluate VFA performance for modeling a microstrip coupled line filter in the presence of noise.

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2018

Parul Mathur, Dr. Dhanesh G. Kurup, M. D. Perez, S R M Shah, J. Velander, and R. Augustine, “An efficient method for computing the interaction of open ended circular waveguide with a layered media”, Progress in Electromagnetics Research Letters, vol. 76, pp. 55-61, 2018.[Abstract]


This article presents a new method for studying the near-field electromagnetic interaction between a dielectric filled open ended circular waveguide (OECW) and a layered dielectric structure. The proposed model is based on plane wave spectrum theory using a novel and computationally efficient two step integration method. The first integral, involving multiple singularities in the integration path, is efficiently solved using a deformed elliptical integration path which encircles the singularities of the integral. The infinite domain tail integral involving the slowly converging integrand is further solved using an efficient trigonometric transformation. The proposed OECW based method is capable of determining the unknown material properties of any layered dielectric medium, and hence finds application in nondestructive evaluation of materials. © 2018, Electromagnetics Academy. All rights reserved.

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2018

S. Redzwan Mo Shah, Velander, J., Parul Mathur, Perez, M. D., Asan, N. Badariah, Dr. Dhanesh G. Kurup, Blokhuis, T. J., and Augustine, R., “Split-Ring Resonator Sensor Penetration Depth Assessment Using In Vivo Microwave Reflectivity and Ultrasound Measurements for Lower Extremity Trauma Rehabilitation.”, Sensors (Basel), vol. 18, no. 2, 2018.[Abstract]


In recent research, microwave sensors have been used to follow up the recovery of lower extremity trauma patients. This is done mainly by monitoring the changes of dielectric properties of lower limb tissues such as skin, fat, muscle, and bone. As part of the characterization of the microwave sensor, it is crucial to assess the signal penetration in in vivo tissues. This work presents a new approach for investigating the penetration depth of planar microwave sensors based on the Split-Ring Resonator in the in vivo context of the femoral area. This approach is based on the optimization of a 3D simulation model using the platform of CST Microwave Studio and consisting of a sensor of the considered type and a multilayered material representing the femoral area. The geometry of the layered material is built based on information from ultrasound images and includes mainly the thicknesses of skin, fat, and muscle tissues. The optimization target is the measured S parameters at the sensor connector and the fitting parameters are the permittivity of each layer of the material. Four positions in the femoral area (two at distal and two at thigh) in four volunteers are considered for the in vivo study. The penetration depths are finally calculated with the help of the electric field distribution in simulations of the optimized model for each one of the 16 considered positions. The numerical results show that positions at the thigh contribute the highest penetration values of up to 17.5 mm. This finding has a high significance in planning in vitro penetration depth measurements and other tests that are going to be performed in the future.

More »»

2017

R. Augustine, Parul Mathur, and Dr. Dhanesh G. Kurup, “Microwave reflectivity analysis of bone mineral density using ultra wide band antenna”, Microwave and Optical Technology Letters, vol. 59, no. 1, pp. 21-26 , 2017.[Abstract]


In this paper, an approach to analyze the bone mineral density (BMD) based on microwave reflectivity is presented The proposed method enables us to overcome the health risks associated with diagnostic techniques such as X-rays for repeated study of the rate of mineralization in the case of fractures or de-mineralization in the case of osteoporosis. The proposed method is used to demonstrate the application of microwaves for continuous observation of skull healing process during post-cranial surgery period. The proposed technique can be a potential clinical model in future for extracting target characteristics such as bone deposition thickness and other cranial defects. Based on the conclusions of wideband measured data and signal processing techniques, we propose to design the Transceiver using ultra-wideband (UWB) pulsed technology.

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2015

Dr. Dhanesh G. Kurup, “Analytical Expressions for Green's functions in Layered media”, IEEE Transactions on Antennas and Propagation, pp. 494-451, 2015.

2015

Dr. Dhanesh G. Kurup, “Analytical Expressions for Spatial-Domain Green's Functions in Layered Media”, IEEE Transactions on Antennas and Propagation, vol. 63, pp. 4944-451, 2015.[Abstract]


Accurate and efficient formulas for computing spatial-domain Green's functions are presented in this paper. To apply the formulas, we only require a set of sample points of the spectral-domain Green's function (SDGF) on an integration path avoiding its singularities and an infinite domain tail path. Since the sampling is carried out for the integrand excluding the Bessel function, the number of sample points required is much smaller than the numerical integration method. This aspect of the proposed method proves to be very advantageous for evaluating closed-form Green's functions at large source observer distances. It is shown that the proposed formulas provide accurate results for both the near-and far-field regions as well as a wide range of material parameters such as lossless, lossy, left-handed materials as well as multilayered substrates. © 2015 IEEE.

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2014

T. Bose, Sasidaran K., Dr. Dhanesh G. Kurup, and B. B. Jha, “Simulation of a Combat Platform Identification System and Comparative Study of Digital Modulation Techniques using GNU Radio and Python”, International Journal of Advanced Research in Computer and Communication Engineering , vol. 3, no. 5, 2014.[Abstract]


GNU Radio is a free and open-source simulation software that provides signal processing blocks to simulate communication systems. It can be used with readily-available low-cost external RF hardware to create software defined radios, or without hardware in a simulation-like environment. It is used to support both wireless communications research and real-world radio systems. For this paper, GNU Radio has been used to simulate a trans-receive chain of a communication system for Combat Platform Identification System to minimize the incidence of fratricide among friendly forces during war. Also, comparative study of the effect of Additive White Gaussian Noise (AWGN) on DBPSK, DQPSK and GMSK modulation techniques have been carried out.

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2014

T. Kiran, Venu Teja, M. Aditya, Dr. Dhanesh G. Kurup, and B. B. Jha, “Performance analysis of EPC Global Gen-2 RFID System Using GNU Radio”, International Journal of Emerging Technology and Advanced Engineering IJETAE, vol. 4, no. 5, 2014.[Abstract]


In this paper, we analyze the performance of the encoding and the modulation processes in the downlink and uplink of the EPC global Gen2 RFID system through
the analysis and simulation using GNU Radio.

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2014

Roopa R., Priyadarshini S., and Dr. Dhanesh G. Kurup, “Analysis of Pointing Error on Satellite Link using GNU Radio”, International Journal of Recent and Innovation Trends in Computing and Communication Engineering (IJRICC), vol. 2, no. 6, pp. 1396 – 1399, 2014.[Abstract]


Satellite technology plays an important role in the global communication system. A significant amount of cost and resources are dedicated for tracking and telemetry of satellite, so that no compromise is made on pointing accuracy. This paper analyses, how the antenna misalignment error affects the received power and in turn Bit Error Rate (BER). For simulation we used a Linux based open software development tool kit called GNU Radio.

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2013

Dr. Dhanesh G. Kurup and Aravinda K, “New expansions of bessel functions of first kind and complex argument”, IEEE Transactions on Antennas and Propagation, vol. 61, pp. 2708-2713, 2013.[Abstract]


We present accurate trigonometric expansions of Bessel functions of first kind and integer order for complex arguments of the form Jv(z)= ∑Kαk,S(βkz) , where α k and β k are constants and S is a sinusoidal function. Using the new expansions, varying levels of accuracy and range of applicability can be achieved by varying the number of terms in the expansions. For example, a four term expansion of J0(z) yields an average relative error of <.1% for z≤2π and same accuracy is achieved for an eight term expansion for an extended range ≤ 5π. Further, a phase and amplitude corrected large argument asymptotic formula is studied such that, the lower limit of its usage is reduced to medium magnitude ranges of arguments. The new set of formulas can not only be incorporated into math libraries very easily but also be useful for treatment of radiation and scattering problems involving Bessel functions. © 1963-2012 IEEE.

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2012

Dr. Dhanesh G. Kurup, “Spatial Domain Green's Functions of Layered Media Using a New Method for Sommerfeld Integrals”, Microwave and Wireless Components Letters, IEEE, vol. 22, pp. 161-163, 2012.[Abstract]


A simplified approach for accurate and efficient computation of infinite domain Sommerfeld integrals (SI) associated with spatial domain Green's functions of layered media is described in this article. Integrand in SI excluding Bessel function is expressed as sum of complex exponentials using the matrix pencil method (MPM) which requires fewer terms than when we include oscillating Bessel functions. By using a novel three term representation for small arguments and classical large argument formulas of Bessel functions, analytical expressions for computing integrals along infinite domain SI tails are derived. The newly derived analytical formulas use the same MPM expansions for any given set of radial distance parameter ρ, enabling us to efficiently solve closed form Green's functions in layered media.

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2003

Dr. Dhanesh G. Kurup and Rydberg, A., “Amplifying active reflect-antenna using a microstrip-T coupled patch /sub e/sign and measurement”, IEEE Transactions on Microwave Theory and Techniques, vol. 51, pp. 1960-1965, 2003.[Abstract]


A compact design of an amplifying active reflect-antenna using a novel microstrip-T coupled-patch antenna is proposed. The dual-polarized ports of the microstrip-T coupled-patch antenna provide excellent RF isolation as well as dc isolation. The dc isolation helps in avoiding additional coupling capacitors in the RF path, thereby achieving reduced layout size and cross-polarization levels for the active reflect-antenna. The gain and monostatic radar cross section (RCS) measurement of the active reflect-antenna has been carried out using a time-domain technique based on a single dual-polarized antenna and vector network analyzer. The measured monostatic RCS and gains are then compared with the calculated ones using two different modeling approaches.

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2003

Dr. Dhanesh G. Kurup, M. Himdi, and A. Rydberg, “Design of an unequally spaced reflect-array”, IEEE Antennas and Wireless Propagation Letters , vol. 2, pp. 33-35, 2003.[Abstract]


We present the design and experimental results of an X-band unequally spaced reflectarray of microstrip patch elements. For a given number of elements, it is shown that reduced sidelobe levels can be attained for unequally spaced reflectarrays compared to that of equally spaced reflectarrays with no significant change in directivity and array size. The synthesis tool used for deriving the element positions is a variant of the genetic algorithm, namely the differential evolution algorithm. More »»

2003

Dr. Dhanesh G. Kurup, M. Himdi, and A. Rydberg, “Synthesis of uniform amplitude unequally spaced antenna arrays using the differential evolution algorithm”, IEEE Transactions on Antennas and Propagation, vol. 51, pp. 2210-2217, 2003.[Abstract]


A computationally efficient global optimization method, the differential evolution algorithm (DEA), is proposed for the synthesis of uniform amplitude arrays of two classes, i.e., unequally spaced arrays with equal phases and unequal phases. Phase-only synthesis and the synthesis of uniformly exited unequally spaced arrays (position only synthesis) are compared and it is seen that, by using the unequal spacing, the number of array elements can be significantly reduced for attaining reduced sidelobe levels. From the DEA-based synthesis of unequally spaced arrays with uniform amplitudes and unequal phases, it is found that a tradeoff exists between the size of the unequally spaced arrays and the range of phases for the same radiation characteristics. The proposed synthesis technique using uniform amplitudes, unequal spacing, and unequal phases (position-phase synthesis) not only decreases the size of the array for the same sidelobe level compared to both the phase-only synthesis and position-only synthesis but also retains their advantages.

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2003

Dr. Dhanesh G. Kurup and A. Rydberg, “Amplifying active reflect-antenna using a microstrip-T coupled patch design and measurement”, IEEE Transactions on Microwave Theory and Techniques, vol. 51, pp. 1960-1965, 2003.[Abstract]


A compact design of an amplifying active reflect-antenna using a novel microstrip-T coupled-patch antenna is proposed. The dual-polarized ports of the microstrip-T coupled-patch antenna provide excellent RF isolation as well as dc isolation. The dc isolation helps in avoiding additional coupling capacitors in the RF path, thereby achieving reduced layout size and cross-polarization levels for the active reflect-antenna. The gain and monostatic radar cross section (RCS) measurement of the active reflect-antenna has been carried out using a time-domain technique based on a single dual-polarized antenna and vector network analyzer. The measured monostatic RCS and gains are then compared with the calculated ones using two different modeling approaches.

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2002

Dr. Dhanesh G. Kurup, A. Rydberg, and M. Himdi, “Compact microstrip-T coupled patch antenna for dual polarization and active antenna applications”, IEE Electronics Letters, vol. 38, pp. 1240-41, 2002.[Abstract]


A novel way of feeding single-layer microstrip patch antennas using electromagnetically coupled microstrip-T junctions is proposed. The measured isolation and 10 dB bandwidth of an X-band dual polarised antenna are ∼32 dB and 2.1%, respectively, on an εr 3.0 substrate. Since both ports of the antenna are electromagnetically coupled, the proposed antenna eliminates the need for capacitors in the RF path for active antenna applications

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2002

Dr. Dhanesh G. Kurup, A. Rydberg, and M. Himdi, “Compact microstrip-T coupled patch antenna for dual polarisation and active antenna applications”, IEEE Electronics Letters, vol. 38, pp. 1240-1241, 2002.[Abstract]


A novel way of feeding single-layer microstrip patch antennas using electromagnetically coupled microstrip-T junctions is proposed. The measured isolation and 10 dB bandwidth of an X-band dual polarised antenna are ∼32 dB and 2.1%, respectively, on an εr 3.0 substrate. Since both ports of the antenna are electromagnetically coupled, the proposed antenna eliminates the need for capacitors in the RF path for active antenna applications.

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2001

Dr. Dhanesh G. Kurup, A. Rydberg, and M. Himdi, “Transmission line model for field distribution in microstrip line fed H-slots”, IEEE Electronics Letters, vol. 37, pp. 873-874, 2001.[Abstract]


A method for finding the electric field distribution of microstrip line fed H-slots is described. A transverse resonance technique is first applied to find a second-order approximation of the slot propagation constant, which is then used in the transmission line model for the H-slot. The proposed model for the field distribution can be applied to the transmission line and cavity model analysis of H-slot coupled microstrip antennas

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2000

Dr. Dhanesh G. Kurup and A. Rydberg, “Design of microwave amplifier using non-resonant slot matching”, IEEE Electronics Letters, vol. 36, pp. 602-603, 2000.[Abstract]


A study into the application of nonresonant slots for impedance matching in microwave circuits is presented based on an evaluation of the performance of a low noise microwave transistor amplifier. Results show improved gain and noise figure characteristics for a slot matched amplifier compared to a microwave amplifier designed using transmission line stubs. Since the slots that are proposed appear in the ground plane of the active circuits, the size of the overall circuit is lower compared to that of an amplifier designed using transmission line stubs.

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1999

Dr. Dhanesh G. Kurup and A. Rydberg, “Dielectric connectors for multilayered RF integration”, Microwave and Optical Technology Letters, vol. 23, pp. 230–233, 1999.[Abstract]


Dielectric connectors for multilayered hybrid integration technology are considered in this paper. The design of one of the connectors which works on the nonradiative dielectric (NRD) waveguide mode has been carried out using a transmission-line model. For this connector, since the slots for the microstrip NRD guide coupling lie directly above one another, considerable space is released compared to the traditional method of using an NRD guide. To further enhance the integration, a novel way of feeding the dielectric connector using a tail-ended tapered microstrip line has also been designed and tested. ©1999 John Wiley & Sons, Inc. Microwave Opt Technol Lett 23: 230–233, 1999.

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Publication Type: Conference Proceedings

Year of Publication Title

2019

V. Bharadwaja, R., A., Nikhil, S., Vineetha Jain, Jalpa Shah, and Dr. Dhanesh G. Kurup, “Efficient Hardware Implementation of Neural Network for Signal Processing Application”, 7th International Conference on Advances in Computing, Communications and Informatics (ICACCI 2018). PESIT, Bangalore, 2019.

2019

A. Joseph, Vineetha Jain, Dr. Dhanesh G. Kurup, and Mini Sujith, “A Neural Network Based Overvoltage Prediction System for Long Cable Issue”, Intelligent Computing, Information and Control Systems. Springer International Publishing, Cham, 2019.[Abstract]


In most electrical applications, the motor is fed by Pulse Width Modulated(PWM) inverters and by design they are usually in separate locations, requiring long motor leads or cables. Overvoltage is a common phenomenon in AC motor drives that are fed by long cables from PWM inverters, as they use Insulated Gate Bipolar Transistors (IGBT) with small rise time and fall time. This paper proposes an Artificial Neural Network based system to predict overvoltage at the motor terminal with long cable using the parameters cable length and motor capacity.

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Publication Type: Conference Paper

Year of Publication Title

2019

Vrinda K and Dr. Dhanesh G. Kurup, “Model order reduction for behavioral modeling of microwave components using delay extraction techniques”, in IEEE TENCON-2019, Kochi, India, 2019.

2019

V. M. Jayakrishnan and Dr. Dhanesh G. Kurup, “Sierpinski Based Square Patch Crossover for GPS Applications”, in 2019 IEEE 9th International Conference on Advanced Computing (IACC), Tiruchirappalli, India, 2019.[Abstract]


In this paper, A modified sierpinski based planar crossover is presented. Square patch crossover is taken as the base, from which square slot and circular slot based Sierpinski methods are analysed. Proposed method yielded 8 dB enhancement in isolation for circular slot sierpinski on the square patch base crossover as compared with square patch crossover. The simulations are done using ANSYS HFSS. The proposed crossovers designs are potential candidates for antenna beamforming and GPS applications.

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2019

P. M. Rao, Sunitha, R., and Dr. Dhanesh G. Kurup, “FastICA Algorithm Applied to Scattered Electromagnetic Signals”, in International Conference on Communication, Computing and Electronics Systems: Proceedings of ICCCES 2019, Singapore, 2019, vol. 637, pp. 27-34.[Abstract]


In this article, a method based on blind source separation (BSS) is applied for separating multiple scattered electromagnetic signals. For BSS, we used fast independent component analysis (FastICA) algorithm. It is shown that individual echoes from the targets can be separated from multiple electromagnetic echoes collected at different spatially separated antennas. For generating the test data, we used a numerical electromagnetic tool. It is concluded that FastICA has the potential for separating echoes from multiple targets in the area of radar systems.

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2019

Parul Mathur, Dr. Amrita Thakur, Augustine, R., and Dr. Dhanesh G. Kurup, “A novel Non-Invasive Microwave Technique for monitoring Salinity in Water”, in TENCON 2019 - 2019 IEEE Region 10 Conference (TENCON), 2019.[Abstract]


The paper presents a novel non-invasive microwave technique for monitoring salt concentration in pure water. The technique is based on near field analysis of open ended coaxial probe (OECP) sensor with material under test (MUT) using plane wave spectrum theory. The proposed technique is compared with experimental results for various concentration of salt solution between 1GHz to 10GHz range. The computed result shows good agreement with experiment. The microwave technique shows better result at lower microwave frequency as compared to higher frequency. At 2GHz range the response of the technique and measurement shows a linear relationship with the salt concentration. The technique shows the potential of extracting the physical parameter, like permittivity, of the salty water.

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2018

Vrinda K and Dr. Dhanesh G. Kurup, “Rational Function Approximation of Parallel Coupled line Interconnects in Integrated Circuits”, in IEEE, EDAPS-2018, Chandigarh, India, 2018.

2018

S. V Kumar and Dr. Dhanesh G. Kurup, “Design of E-Plane Filter for Ka-band Ground Stations”, in 2018 IEEE Indian Conference on Antennas and Propogation (InCAP), Hyderabad, India, 2018.[Abstract]


A high performance, waveguide E-Plane filter has been designed for Ka-band Ground Station Applications to restrict the band of frequencies. E-plane filter with all metal insert configuration has been selected for the application to obtain low insertion loss. Inductive irises are fabricated on thin metallic structure with high degree of fabrication accuracy and the strip is sandwiched between two waveguide halves form the E-plane filter assembly. Fabrication accuracy of 10 microns is demanded by the high frequency filter to meet the stringent electrical requirements of the Ground Station system. Silver plating has been carried out interior surfaces of the waveguide filter to reduce the insertion loss. Low loss of 0.25 dB is aimed at 26.25 GHz center frequency with 1.5 GHz pass band. Stopband rejection of 80 dB is obtained at 30 GHz frequency, at which high power uplink signals are transmitted from the Ground station for communicating with GEO Stationary Satellites.

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2018

K. Vrinda, Dr. N.S. Murty, and Dr. Dhanesh G. Kurup, “Rational Approximation of RF Passive Devices for Noisy Data”, in 2018 IEEE International Conference on Communication and Signal Processing, ICCSP 2018, Chennai, India, 2018, pp. 170-174.[Abstract]


In this article, we present Vector Fitting Algorithm VFA to derive the rational function approximation model of Bandpass and Baseband systems in presence of Noise. The Root Mean Square Error RMSE and Identification error C scriptstyle p is calculated to analyze the modeling accuracy of VFA, for different orders of the system and for different SNR signal to noise ratio criteria. VFA is found to be more noise resilient with regard to system identification for higher order systems compared to lower order systems due to sharper frequency cut-off characteristics and corresponding noise suppression for higher order systems. It was also found that, for the same order and SNR, baseband systems have less modeling errors, when compared to bandpass systems. 

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2018

K. Nishkala, B Toshitha Royan, H M Aishwarya, Sanjika Devi R V, and Dr. Dhanesh G. Kurup, “Detection of Ruptures in Pipeline Coatings using Split Ring Resonator Sensor”, in 7th IEEE International conference on Advances in Computing, Communications and Informatics (ICACCI), PES Institute of Technology, Bengaluru, South campus, India, 2018.

2018

G. Narayanan and Dr. Dhanesh G. Kurup, “Detection of a real Sinusoid in noise using Differential evolution algorithm”, in Forth international Conference ICHSA, Gurgaon, 2018.

2018

M. D. Perez, G. Thomas, Syaiful. S, J. Velander, N. Asan, P. Mathur, M. Nasir, D. Nowinski, Dr. Dhanesh G. Kurup, and R. Augustine, “BDAS: Preliminary Study on Microwave Sensor for Bone Healing Follow-up after Cranial Surgery in Newborns”, in 12th European Conference on Antenna and Propagation,London, (EuCap), UK, 2018.

2018

Syaiful. S, J. Velander, Parul Mathur, M. D. Perez, N. Asan, Dr. Dhanesh G. Kurup, T. Blokhuis, and R. Augustine, “Penetration Depth Evaluation of Split Ring Resonator sensor using In-Vivo Microwave Reflectivity and Ultrasound Measurements”, in 12th European Conference on Antenna and Propagation (EuCap), London, UK, 2018.

2018

Vrinda K., N. S. Murty, and Dr. Dhanesh G. Kurup, “Rational function approximation of RF Passive Devices fpr Noisy Data”, in ICCSP, Chennai, 2018.

2018

M. D. Perez, V. Mattson, S. R. M. Shah, Jacob Velander, Noor Badariah Asan, Parul Mathur, M. Nasir, Daniel Nowinski, Dr. Dhanesh G. Kurup, and R. Augustine, “New Approach for Clinical Data Analysis of Microwave Sensor Based Bone Healing Monitoring System in Craniosynostosis Treated Pediatric Patients”, in Conference on Antenna Measurement and Applications (CAMA), Sweden, 2018.

2018

Vineetha K, Dr. Dhanesh G. Kurup, and Jalpa Shah, “Implementation of Artificial Neural Network on Raspberry Pi for Signal Processing Applications”, in ICACCI, India, 2018.

2018

D. V. S. Srikar, K. C. Sairam, T. Srikanth, Gayathri Narayanan, Vrinda K, and Dr. Dhanesh G. Kurup, “Implementation and Testing of Cyber Physical System in Laboratory for Precision Agriculture”, in Sixth International Symposium on Intelligent Informatics (ISI’ Sep 2018), 2018.

2018

Arawind K, Jalpa Shah, and Dr. Dhanesh G. Kurup, “Bit Error Rate (BER) Performance Analysis of DASH7 Protocol In Rayleigh Fading Channel”, in IEEE International conference on Computing, Communications and Informatics (ICACCI), Bangalore, 2018.

2018

Aswini P Reghu, Sanjika Devi R V, Vrinda K, and Dr. Dhanesh G. Kurup, “Macromodeling of High Frequency Interconnects based on Accurate Delay Identification”, in IEEE International conference on Computing, Communications and Informatics (ICACCI), , Bangalore, 2018.

2018

Shruthi N., Parul Mathur, and Dr. Dhanesh G. Kurup, “Performance of Ultra Wideband (UWB) pulsed Doppler Radar for heart rate and respiration rate monitoring in Noise”, in International Conference on Advances in Computing, Communications and Informatics (ICACCI), India, 2018.

2018

Srinadh Reddy Bhavanam, Sanjika Devi R V, Sriram Mudulodu, and Dr. Dhanesh G. Kurup, “Information Criteria Based Optimal Structure Identification of RF Power Amplifier Models”, in International Symposium on Intelligent Systems Technologies and Applications (ISTA), Bangalore, 2018.

2018

S. M. Bhat, S. Nikhil, Vineetha Jain, Sarada Jayan, and Dr. Dhanesh G. Kurup, “A Parallelized Method for Global Single Variable Optimization”, in Biennial International Conference on Power and Energy Systems: Towards Sustainable Energy (PESTSE), Amrita School of Engineering, Bengaluru, 2018.

2018

A. Purushothaman, Vineetha Jain, and Dr. Dhanesh G. Kurup, “Fall detection system using Artificial Neural Network”, in 2nd International Conference on Inventive Communication and Computational Technologies(ICICCT 2018), Hotel Arcadia, Coimbatore, 2018.

2017

Sanjika Devi R V, B. M. Nandini, M. Niharika, P. Anush, and Dr. Dhanesh G. Kurup, “Broadband RF Power Amplifier Modeling using an Enhanced Wiener Model”, in International Conference on Computer, Communication and Informatics (ICCIC 2017, 2017.

2017

Sanjika Devi R V and Dr. Dhanesh G. Kurup, “Sparse Identification of Memory Effects and Nonlinear Dynamics for Developing Parsimonious Behavioral Models of RF Power Amplifiers”, in IEEE MTT-S International Microwave and RF Conference (IMARC), Ahmedabad, India, 2017.

2017

V. S. Kumar and Dr. Dhanesh G. Kurup, “Design of Dielectric Rod Antenna for Ground Station Applications”, in International IEEE conference on Innovations in Antenna iAIM, India, 2017.

2017

N. Saideep, Dr. Dhanesh G. Kurup, and Shikha Tripathi, “Detection of Closely Spaced Sinusoids in Noise using FastICA algorithm”, in Symposium on Recent Advances in Communication Theory, Information Theory, Antennas and Propagation(CIAP’17), Manipal University, Karnataka, India, 2017.

2017

Sanjika Devi R V and Dr. Dhanesh G. Kurup, “Behavioral modeling of RF power amplifiers for designing energy efficient wireless systems”, in IEEE International conference on Wireless Communication and Networking (WiSPNET 2017), , Chennai, India, 2017, vol. 2018-January, pp. 1994-1998.[Abstract]


RF Power Amplifiers (PA) consumes a major part of available DC power in any wireless system. This article deals with behavioral modeling of RF Power Amplifiers using artificial neural networks. The developed model enables us to find energy consumption for a signal passing through the PA for a given Gain and maximum allowable distortion. The proposed modeling approach also enables us to linearize the PA by incorporating an inverse model of the PA in the baseband signal processor for compensating the distortion. The PA model can also be used as a sub-system model for evaluating the error performance of the overall system in terms of bit error rate (BER). The modeling method is validated for a class AB power amplifier design. © 2017 IEEE.

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2017

G. Yeswanthi, M. Kavitha, P.S. Priyanka, and Dr. Dhanesh G. Kurup, “Programmable high data rate QPSK modulator for space applications”, in Fifth International Symposium on Intelligent Informatics (ICACCI 2017), Manipal University, Karnataka, India, 2017, vol. 2017-January, pp. 2276-2278.[Abstract]


This article, describes the implementation of QPSK modulator and FPGA programming aspects for carrier frequency control for data transmission units in space applications. The module occupies lesser area for integration, operates on lower power and supports higher data rates than conventional modulator units of Indian Space Research Organization (ISRO). The scope of a miniature and low power modulator primarily finds many applications in satellite communication as the proposed system is a frugal alternative to implement most communication applications that work at longer distances and for wider coverage areas. © 2017 IEEE.

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2017

Vineetha Jain and Dr. Dhanesh G. Kurup, “Direct demodulator for amplitude modulated signals using artificial neural network”, in 3rd International Symposium on Intelligent Systems Technologies and Applications (ISTA-2017), , Udupi, India, 2017.

2017

Parul Mathur, Dr. Dhanesh G. Kurup, and R. Augustine, “Design of open ended circular waveguide for non-invasive monitoring of cranial healing in pediatric craniosynostosis”, in 2017 1st IEEE MTT-S International Microwave Bio Conference, IMBioC 2017, Gothenburg, Sweden, 2017.[Abstract]


This article deals with design parameters of open ended circular waveguide (OECW) for non-invasive monitoring of skull healing in pediatric craniosynostosis patients post cranial surgery. The surgery involves removal of one or a set of bone flaps from the patient's skull. The defect thus created is filled with bone dust and heals by itself over time but complications like non-unions could occur, thereby, necessitating regular monitoring of the healing process. In this article, results of the simulated interaction of the waveguide with the skull healing are presented. Extensive optimization process is performed to arrive at optimal design parameters of the waveguide. Frequency of operation and the material that fills the waveguide are investigated to improve the sensitivity of detection and enhance the monitoring of three different stages of cranial healing. © 2017 IEEE.

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2016

R. Yeshaswy, A. Pratheik, R. V. S. Karteek, Sanjika Devi R V, and Dr. Dhanesh G. Kurup, “Design and analysis of a 6 Watt GaN based X-band power amplifier”, in 2016 International Conference on Communication and Signal Processing (ICCSP), 2016.[Abstract]


This paper, deals with the design of a class AB, Gallium Nitride (GaN) transistor based High Power Amplifier (HPA) for Monolithic Microwave Integrated Circuits (MMICs). GaN transistor is selected because of its rugged nature and its capability to work in extreme conditions. The designed HPA is intended to be housed in a Quad Trans-Receive Module (QTRM) of an Active Phased Array RADAR system. The HPA delivers a gain of 10.2 dB and an output power of 37 dBm, as well as high efficiency over many octaves of bandwidth.

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2016

V. Sruthi, S. Krishnaveni, Sanjika Devi R V, Vrinda K, Dr. Dhanesh G. Kurup, and V. Senthil Kumar, “Macromodeling of a dual polarized X band Microstrip-T Coupled Patch antenna”, in IEEE INDICON, IISc Bangalore , Bangalore , 2016.

2016

Reshmi K and Dr. Dhanesh G. Kurup, “Implementation aspects of a new RFID anti-collision algorithm”, in IEEE Region 10 Conference TENCON, Singapore, 2016.

2016

T. Darshi Panda, Nagaraja, K. V., Dr. Dhanesh G. Kurup, V. Naidu, K., and Jayan, S., “The use of higher order parabolic arcs for the computation of cutoff wavenumbers for TM modes in arbitrary shaped waveguides”, in 2016 International Conference on Communication and Signal Processing (ICCSP), Melmaruvathur, India, 2016.[Abstract]


This paper presents the use of Quartic and Quintic order finite elements for computing cutoff wavenumbers of arbitrary shaped waveguides. These finite elements are used for mapping the boundaries of waveguides with the highest accuracy. In the case of waveguides with curve geometries, the mapping is done by quartic and quintic order parabolic arcs. The domain of a particular waveguide is transformed to a suitable isosceles triangle with the help of these finite elements. The above method is found to be highly computationally efficient as compared to other methods found in literature.

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2015

R. Augustine, Dr. Dhanesh G. Kurup, S. Raman, D. Lee, K. Kim, and A. Rydberg, “Bone Mineral Density Analysis using Ultra Wideband Microwave Measurements”, in IEEE International Microwave and RF Conference (ImaRC), Hyderabad, India, 2015.

2015

R. Yesshaswi, A. Pratheik, Karthi S., Devi Sanjika, and Dr. Dhanesh G. Kurup, “Design and analysis of 6 watt GaN based X-band Power Amplifier”, in India Conference (INDICON-2015), 2015.

2015

A. V. Menon, M. Amita, Anjali G, and Dr. Dhanesh G. Kurup, “Combined Amplitude and Phase Noise Effects in QAM Direct Conversion Receivers”, in International Conference on Microwave, Optical and Communication Engineering (ICMOCE), IIT-Bhuvaneshwar, 2015.

2015

S. Avantika, S. K. Devika, V. Gomathy, S. Manjukrishna, Singh A. K., and Dr. Dhanesh G. Kurup, “Design and Experimental Characterization of a Bandpass Sampling Receiver”, in International Conference on Communication Systems, ICCS-2015, American Institute of Physics (AIP), Pilani, India, 2015.

2014

M. S. Sabarish, Srihari S., Arunaa, T. S. Swathi, and Dr. Dhanesh G. Kurup, “Simulation and design of a chipless passive RFID Tag”, in International Conference on Advances in Electronics, Computers and Communications (ICAECC), 2014 , Bangalore, 2014.[Abstract]


RFID is an object identification and tracking technology worth several billion dollars today. Chipless technology doesn't require communication protocols and IC, making it cheaper. Passive RFID Tags use backscattering technique to send information to the Reader. In this paper, we present a passive RFID Tag based on Ultra-wide band technology. The chipless RFID tag modeled uses passive elements, namely antennas and transmission lines in different architectural orders by varying the lengths and the number of the transmission lines. The unique identities of the tags are characterized by the number and the lengths of the transmission lines and hence a large number of tags can be manufactured economically with a finite number of transmission lines. The technology involves transmission of nanosecond duration pulses which enables high precision time of arrival (TOA) estimation of signal. The software tool used to simulate this system is Linux based open source software development toolkit called GNURadio. It has a predefined set of signal processing blocks and has the provision to code user defined blocks and enables us to represent the RFID system using standard programming languages namely C++ and Python.

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2013

Navya K., N.U. Amrutha, Dr. Dhanesh G. Kurup, and Dr. Shikha Tripathi, “Time Series Analysis of Solar and Stellar Data using the S-Transform”, in ELSEVIER Proceedings of International Conferences on Advances in Signal Processing and Communication (SPC-2013), Lucknow, India, 2013.

2003

Dr. Dhanesh G. Kurup, A. Rydberg, and M. Himdi, “Power combining using unequally spaced active reflect-array”, in Conference proceeding ANTENN-03, Kalmar, Sweden, 2003.

2002

Dr. Dhanesh G. Kurup, A. Rydberg, and M. Himdi, “Active reflect-antennas for power combining unequally spaced arrays”, in Proceedings, RVK-02, Radio Science and Communications, Stockholm, 2002.

2001

Dr. Dhanesh G. Kurup, A. Rydberg, and E. Öjefors, “Synthesis of Micromachined Antennas using the Genetic Algorithm”, in GigaHertz 2001 Symposium, University of Lund, Sweden, 2001.

2001

P. Ridderström, Dr. Dhanesh G. Kurup, A. Rydberg, and K. Wallin, “Design of a corner fed serial microstrip patch antenna array using Genetic Algorithm”, in Electromagnetic Computations - Methods and Applications (EMB 01), Uppsala University, Sweden, 2001.

2001

Dr. Dhanesh G. Kurup and A. Rydberg, “Towards a toolbox for synthesis of integrated radio front-ends”, in Proceedings, NRS-01, Nordic Radio Symposium, Nynäshamn , Sweden, 2001.[Abstract]


This paper presents design tools and optimization techniques useful for the design of radio front-ends consisting of integrated active and passive parts. The advantage of hybrid active-passive design technique is demonstrated by highlighting the results of a slot matched transistor amplifier. An efficient design of similar hybrid active-passive circuits needs computationally efficient design tools for the active and passive components interfaced using powerful optimisation tools. Synthesis of aperture micro strip antennas modelled using transmission line models and interfaced with Genetic Algorithm optimization tool will be presented as a part of this objective. More »»

2001

Dr. Dhanesh G. Kurup, E. Öjefors, and A. Rydberg, “Design of Millimeterwave Micro-Machined Patch Antennas for Wlan Applications using a Computationally Efficient Method”, in Conference Proceedings, European Microwave Conference, London, 2001, pp. 1 - 4.[Abstract]


This paper presents a computationally efficient method for the design of millimeter wave H-slot coupled silicon micromachined patch antennas using a transmission line model. The analysis incorporates CAD models of the suspended substrate microstripline for the calculation of effective dielectric constant of the radiating patch. The theoretical and experimental results for a fabricated 60GHz micromachined patch antenna are compared, showing good agreement.

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2000

Dr. Dhanesh G. Kurup and A Rydberg, “Slots as impedance transformers in microwave circuit designs”, in symposium proceedings GHz-2000, Göteborg, Sweden, 2000, pp. 407-410.

2000

Dr. Dhanesh G. Kurup, A. Rydberg, and T. Johansson, “A Nonradiative dielectric interconnect for compact radio front-ends”, in Proceedings, RVK-99, Radio Vetenskap och Kommunications, Karlskrona, Sweden, 2000.

2000

E. Öjefors, J. Lindblom, A. Rydberg, Dr. Dhanesh G. Kurup, Y. Bäcklund, F. Municio, T. Ryhanen, and H. O. Scheck, “High gain micromachined slot-coupled patch-antenna for 60 GHz WLAN application”, in proceedings COST-268, Rennes, France, 2000.

1998

Dr. Dhanesh G. Kurup and A. Rydberg, “Equivalent network models for active antenna design”, in Conference proceedings EMB-98, Electromagnetic computations for analysis and design of complex systems, Linköping, Sweden, 1998, pp. 195-202.

1996

B. Sinha and Dr. Dhanesh G. Kurup, “CAD for RCS of complex objects”, in Conference Proceedings, Asia Pacific Microwave Conference, APMC, New Delhi, 1996.

Publication Type: Patent

Year of Publication Title

2007

Dr. Dhanesh G. Kurup, “Data carrier device”, 2007.[Abstract]


A passive data carrier device (100) comprises an input port (110) for receiving a finite duration radio frequency input signal of defined time and frequency spectral characteristics. The data carrier device (100) comprises at least one branch (130) having combinations of passive RF elements, such as band filters (134) and time delays (136), optionally together with powder dividers (120) and combiners (140). The input signal is processed by the device (100) to form an output signal having time and frequency spectral characteristics different from the input signal. The data carrier device (100) has potential application in an RF identification system.

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2004

Dr. Dhanesh G. Kurup, “Encoding of RFID”, 2004.[Abstract]


A method is disclosed for generating data encoded RF (radio frequency) waveform without a separate memory device/chip. The hardware in the proposed method consists of entities performing the operations of time-delay (B), phase shifting (C), attenuation, power dividing (D) and power combining (E). An integral part of the invention is the application of the method in designing radio frequency identification devices or RFID-tags.

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Grants for Research Project Sponsered by Government Sources

Sl. No Name of the project/Endowments, Chairs Name of the principal Investigator/Co investigator Name of the funding agency Year of award Funds Provided (INR in Lakhs) Duration of the project
1 Behavioral Modeling and Digital Pre-Distortion (DPD) of High Power Amplifiers for Satellite Systems (ongoing) Dr. Dhanesh G.Kurup (PI)
R. V. Sanjika Devi (Co-PI)
Dr. Ramesh Chintala (Co-PI)
ISRO 2019    
2 A modular cyber physical system for sustainable water management(selected) Dr. Dhanesh G. Kurup (Co-PI) ICPS Division DST, Govt. Of India 2018 40 3
3 Bone Mineal Density Analysis System (BDAS)(ongoing) Dr. Dhanesh G. Kurup (PI) Bilataral Co-operation Division DST, Govt. Of India 2017 48 3
4 Non Invasive Microwave Based Sensors(ongoing) Ms. Parul Mathur(Scholar). Dhanesh G. Kurup (Advisor) Media Labs-Visvesaraya Research Scheme Govt. Of India 2016 35 4

Projects ( Guide/ Co-Guide)

  • Project Title : Multi-Antenna Power Combining Techniques
    Scholar : Anusri S.
  • Project Title : EM Source Localization
    Scholar : Srividhya P.
  • Project Title : RF Power Amplifiers
    Scholar : Jinse Jose
  • Project Title : Simulation of a Chipless Passive RFID Tags
    Scholar : Sree Sabarish, Srihari, Swati Arunaa
  • Project Title : Combat Platform Identification Systems: Simulation using Gnuradio
    Scholar : Tanoy Bose, Sasidaran K
  • Project Title : Coastal Surveillance System: Study of Different Digital Modulation schemes using Gnuradio
    Scholar : Aditya Patial, Druva Ram, Nikshith Kumar
  • Project Title : Simulation of pointing error in satellite links using Gnuradio
    Scholar : Roopa R., M. Tejaswi, Priyadarshini S. A.
  • Project Title : Study of RFID system applied to Bus-Ticketing
    Scholar : Kiran T, M.V. Aditya, Venu Teja
  • Project Title : Simulation of Gen-2 RFID system using Gnuradio
    Scholar : Salivahana Reddy, Sai Yeswanth, Chaitanya Sai Srinivas
  • Project Title : FastICA algorithm applied to separation of signal mixtures
    Scholar : Vijay Krishna, K Pratap, K Anusha
  • Project Title : Through wall Imaging System: Fundamental studies using HFSS
    Scholar : Pratul Gupta
  • Project Title : Wireless Soil Moisture Sensor: Fundamental studies using HFSS
    Scholar : Lalith Velamuri, Tharun Kumar, Royalu Reddy
  • Project Title : Non-linear modeling of Analog to Digital Converters
    Scholar : Y. Lakshmi Chandra Shekar, Sachin M. Menon
  • Project Title : A solution for wastebin management using Zigbee
    Scholar : H. R. Jayadev, Mukesh Siddarth, Ram Kumar
  • Project Title : Power Amplifier Design
    Scholar : R. V. Saikarteek, Pratheik A, Yeshaswy R.
  • Project Title : Band-pass sampling Reciever
    Scholar : Avantika Singh, Devika S. Kumar, Gomathy Venkateshwaran
  • Project Title : Behavioral Model of RF Oscillators
    Scholar : Aishwarya, Amita V. Menon, Anjali Gunjegai
  • Project Title : Improved design of Gen2 RFID anti-collision protocol
    Scholar : Reshmi K (M.Tech VLSI)
  • M. Tech Project - Saideep
  • M. Tech Project - Deepthi
  • B. Tech Project 1
  • B. Tech Project -2
  • B. Tech Project- 3
  • Project Title : Experimental Characterization and Modeling of Power Amplifier Modules for Space Applications
    Scholar : Kavita, Priyanka, Yeshwanthi.

Courses Taught

  • Modeling and Simulation of Communication Systems
  • RF Engineering (B. Tech., M.Tech.)
  • Monolithic Microwave Integrated Circuits (Ph.D.)
  • Advanced Electromagnetics   (Ph.D.)
  • Neural Networks (Ph.D.)
  • Radio Frequency Identification Systems (B. Tech.)
  • Software Defined Radio (B. Tech.)
  • Signal Processing I (B. Tech.)
  • Mathematics of Signal Processing (B. Tech.)
  • Transmission Lines and Radiating Systems (B.Tech.)
  • Pattern Recognition (B. Tech.)

Research Scholars

Sl. No. Name of the Student Topic Status – Ongoing/ Completed Year of Completion
1 Parul Mathur Microwave Imaging Thesis review 2021
2 Senthil Kumar Ku-band Monopulse Comparator Open Seminar II 2021
3 Sanjika Devi Digital Predistortion in RF Power Amplifiers Open Seminar -I 2021
4 Sreenivasulu Pala Wireless Real Time Localization Open Seminar -I 2021
5 Vrinda K. Efficient Behavioural Modeling of passive RF devices Open Seminar -I 2021
6 Vineetha Jain Algorithms for Antenna Beam-formers in FPGA (co-guide Dr. Ramesh Chintala) Proposal Defense 2022
7 Gayathri Narayanan (Amritapuri campus) Wireless channel modeling Proposal Defense 2022
8 Jayakrishnan (Amritapuri campus) Antenna Arrays Proposal Defense 2023