Qualification: 
Ph.D, M.E, B-Tech
dg_kurup@blr.amrita.edu

Dr. Dhanesh G. Kurup serves as Professor at the department of Electronics and Communication, Amrita School of Engineering, Bengaluru 

Dhanesh G. Kurup received his Bachelor’s and Master’s degree in Electronics and Communication Engineering from Calicut University and Indian Institute of Technology, Roorkee, Inda respectively. He further obtained  Ph.D. degrees from Uppsala University, Sweden and University of Rennes 1, France. He was with Satellite Centre, Indian Space Research Organization (ISRO), Bangalore as a Scientist/Engineer  for about two years and as a Guest Researcher with University of Rennes for about three years. 

For about eight years Dr. Kurup directed research and subsequently as a consultant for about one year at Wavelogics AB, Sweden. In addition, he has teaching experience of over four years.

Dr. Kurup’s research interests includes active antennas, antenna arrays, computational electromagnetics, RF circuit design,  Signal Processing and behavioral modeling of wireless systems.

Qualification

Year Degree University
2003 Ph. D.  Uppsala University, Sweden and University of Rennes 1
1995 M. E.  Indian Institute of Technology, Roorkee, India 
1991 B. Tech. Calicut University, India

Publications

Publication Type: Journal Article

Year of Publication Publication Type Title

2018

Journal Article

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, 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. More »»

2017

Journal Article

R. Augustine, Dr. Dhanesh G. Kurup, Redzwan, S., Mathur, P., Raman, S., Lee, D., and Kim, K., “Microwave reflectivity analysis of bone mineral density using ultra wide band antenna”, Microwave and Optical Technology Letters, vol. 59, no. 1, 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. More »»

2015

Journal Article

Dr. Dhanesh G. Kurup, “Analytical Expressions for Spatial-Domain Green's Functions in Layered Media”, IEEE Transactions on Antennas and Propagation, vol. 63, pp. 4944-4951, 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.

More »»

2014

Journal Article

Dr. Dhanesh G. Kurup, Roopa, R., Priyadarshini, S., and A., T., “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.

More »»

2014

Journal Article

T. Kiran, Venu, T., Aditya, M., Dr. Dhanesh G. Kurup, and B., J. B., “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.

More »»

2014

Journal Article

B. T., Sasidaran, K., Dr. Dhanesh G. Kurup, and B., J. B., “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.

More »»

2013

Journal Article

Dr. Dhanesh G. Kurup and Koithyar, A., “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.

More »»

2012

Journal Article

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.

More »»

2003

Journal Article

Dr. Dhanesh G. Kurup and Rydberg, A., “Amplifying active reflect-antenna using a microstrip-T coupled patch design and measurement”, Microwave Theory and Techniques, IEEE Transactions on, 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. More »»

2003

Journal Article

Dr. Dhanesh G. Kurup, Himdi, M., and Rydberg, A., “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. More »»

2003

Journal Article

Dr. Dhanesh G. Kurup, Himdi, M., and Rydberg, A., “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 »»

2002

Journal Article

H. M., A., R., and Dr. Dhanesh G. Kurup, “Compact microstrip-T coupled patch antenna for dual polarisation and active antenna applications”, IEE Electronics Letters, vol. 38, pp. 1240-1241(1), 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. More »»

2001

Journal Article

Dr. Dhanesh G. Kurup, Rydberg, A., and Himdi, M., “Transmission line model for field distribution in microstrip line fed H-slots”, 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 More »»

2001

Journal Article

Dr. Dhanesh G. Kurup, Rydberg, A., and Ojefors, E., “Design of Millimeterwave Micro-Machined Patch Antennas for Wlan Applications using a Computationally Efficient Method”, 2001 31st European Microwave Conference, pp. 1 - 4, 2001.[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. More »»

2000

Journal Article

Dr. Dhanesh G. Kurup and Rydberg, A., “Design of microwave amplifier using non-resonant slot matching”, 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. More »»

2000

Journal Article

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

1999

Journal Article

Dr. Dhanesh G. Kurup and Rydberg, A., “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. More »»

1998

Journal Article

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

Publication Type: Conference Paper

Year of Publication Publication Type Title

2017

Conference Paper

Vineetha Jain K. V. and Dr. Dhanesh G. Kurup, “Direct Demodulator for Amplitude Modulated Signals Using Artificial Neural Network”, in International Symposium on Intelligent Systems Technologies and Applications (ISTA'17), , Manipal University, Karnataka, 2017.[Abstract]


This article, presents an Artificial Neural Network (ANN) based high speed demodulator, capable of demodulating amplitude modulated signals. The ANN is developed using Multilayer Perceptron (MLP) based Neural Network. We also introduce a pre-processing method for faster training of the ANN and a method training ANN using random modulating signal. Test results are presented for modulating signals such as triangular wave and square wave. We show that, the unique preprocessing technique introduced in this article enables us to achieve faster training of the ANN.

More »»

2016

Conference Paper

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

2016

Conference Paper

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

2016

Conference Paper

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

2016

Conference Paper

R. Yeshaswy, Pratheik, A., Karteek, R. V. S., Devi, R. S., 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. More »»

2015

Conference Paper

S. Avantika, Devika, S. K., Gomathy, V., Manjukrishna, S., K., S. A., 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.

2015

Conference Paper

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

Conference Paper

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

2015

Conference Paper

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

2014

Conference Paper

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.

More »»

2013

Conference Paper

Dr. Shikha Tripathi, Dr. Dhanesh G. Kurup, .Navya, K., and Amrutha, N. U., “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

Conference Paper

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

2002

Conference Paper

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

2001

Conference Paper

Dr. Dhanesh G. Kurup and A., R., “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

Conference Paper

R. P., Dr. Dhanesh G. Kurup, A., R., and K., W., “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

Conference Paper

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

2000

Conference Paper

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

1999

Conference Paper

Dr. Dhanesh G. Kurup, A., R., and T., J., “A Nonradiative dielectric interconnect for compact radio front-ends”, in Proceedings, RVK-99, Radio Vetenskap och Kommunications, Karlskrona, Sweden, 1999.

1996

Conference Paper

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

207
PROGRAMS
OFFERED
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AMRITA
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