Ph. D. in Electronics & Communication Engineering

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Introduction to analog communication system – Amplitude Modulation (AM) – Frequency Modulation (FM) – Phase Modulation (PM) – Multiplexing – Complex low pass representation of narrow band signals and systems – Introduction to random processes – Characterization of noise – Sampling theorem – Quantization- Waveform coding– Baseband and band-pass Digital modulation and demodulation schemes – Digital transmission through AWGN band limited channels – Source coding-Information theory – Error correction codes. Data Communication Concepts – OSI model.

Combinatorial circuits, sequential circuits, number representation – fixed and floating point, FPGAs; computer architecture – data representation, addressing modes, ALU, CPU, pipelining, cache and virtual memory; microcontrollers – ARM, PIC, ATMEGA, USART, I2C, SPI interfaces, assembly language programming; AMBA Bus architectures

Static Electric Fields – Co-ordinate systems – Basic postulates and theorems in electromagnetics – Electrostatics – Magneto statics – Maxwell’s equations – Boundary conditions – Wave equation – Diffraction and interference.

Basic postulates and theorems in electromagnetics – Maxwell’s equations – Boundary conditions – Wave equation – transmission lines – impedance matching – waveguides – dielectric waveguides and optical fiber – dispersion and attenuation.

Introduction to Semiconductor materials – Crystal Structure – Review of Quantum Mechanics – E-k diagram – Semiconductor in equilibrium – Carrier transport – pn junction – direct/indirect bandgap – materials for optoelectronics – Optoelectronic devices – Semiconductor device fabrication.

Transmission lines – impedance matching – Waveguides – Transmission Line Resonators – S parameters – S matrix of microwave devices – Effect of mismatch on S-matrix – Antenna Radiation principle – Reflection and radiation characteristics – Radiation from a dipole – monopole and dipole antenna – Antenna arrays – Microstrip Antennas

Semiconductor materials, crystal structures, quantum mechanics, doping, mobility and conductivity, fermi level, equilibrium carrier concentrations, diffusion and drift, forward and reverse biased pn junction characteristics and properties, band diagrams, MOS capacitor, MOSFET physics, ideal MOSFET characteristics, threshold and sub threshold characteristics, short channel effects, current trends in MOSFET technology, LED physics, Photodetectors, Solar cell concepts, Lasers, optical fibers, waveguides, fabrication technology for ICs – lithography, ion implantation, etching, thin film deposition, interconnects.

Classification of signals – Basic operations on signals. Systems (continuous/discrete): Representation, classification. LTI systems – differential/difference equation representation, properties, Convolution. Fourier Series – Fourier transform – Sampling – Laplace Transform analysis of systems – Z-Transform – Frequency response of discrete time LTI systems. Filter Design: IIR filters – Butterworth and Chebyshev filters, design methods, transformation to digital filters – impulse invariance and bilinear transformation. FIR filters – design of FIR filters using windowing techniques.

Recent awards and funding

• AIRA Publication Award for Dr. Sreenidhi P. R.
• KSCSTE Funding for student project titled ” Sensor embedded bed for body signal monitoring” for Dr. Sreenidhi P. R. and students.
• Rakesh Kumar is executing a SERB funded project “Light manipulation system using micro-optical concepts (LITECON)”, as a CO PI. Period: Jan2020-Jan2023. Host Institute: Amrita Vishwa Vidyapeetham, Amritapuri. Amount received: Rs. 38 lakh, Status: Ongoing.
• Viswas S. Nair executed a funded project titled “Shape Optimization of Optical Structures”, Funded by Science and Engineering Research Board (SERB), India through their startup research grant scheme. Period: 2020-2022, Host Institute: Amrita Vishwa Vidyapeetham, Amritapuri. Grant Amount: Rs. 28.7 lakh, Status: Completed.

Some recent publications

• “Nature-inspired PDMS cumulonimbus micro-energy-harvesting cloud”, SP Rajeev, VN John, S Sabarinath, A Ashfak, CK Subash, S Varghese, Applied Nanoscience, 11 (1), 127-137, 7, 2021
• “Optimising proof mass for cantilever based piezoelectric energy harvester”, MG Greeshma, SP Rajeev, Materials Today: Proceedings, 2021
• Meenu, L., S. Aiswarya, and Sreedevi K. Menon, “A novel and effective technique to reduce electromagnetic radiation absorption on biotic components at 2.45 GHz.” Electromagnetic biology and medicine (2022).
• Menon, Sreedevi K., and Massimo Donelli, “Development of enhanced range, high Q, passive, chipless RFID tags for continuous monitoring and sensing applications.” Electronics, 11.1 (2021): 127.
• Menon, Sreedevi K., and Massimo Donelli, “Development of a Microwave Sensor for Solid and Liquid Substances Based on Closed Loop Resonator.” Sensors, 21.24 (2021): 8506.
• Viswas Sadasivan, “Circular Optical Arrays Using Waveguide Fed 45° Angled Mirrors”, IEEE Journal of Selected Topics in Quantum Electronics, vol. 27, no. 1, pp. 1 – 8, 2021.

• Analog VLSI
• Digital VLSI
• Radio frequency and antenna engineering
• Photonics, optoelectronics and optical imaging
• Material science and applications
• Signal processing
• Communication
• Embedded systems and robotics
• Machine learning and computer vision

• VLSI lab with Cadence, Mentor graphics and Synopsis TCAD
• Embedded systems lab with FPGA boards
• Microcontroller lab
• HuT Lab for Robotics and Embedded systems
• IoT lab
• Optical imaging lab with optical bench and in-house developed design tools
• Photonic Devices and Systems lab with Optical bench, device characterisation setup, COMSOL Multiphysics software and in-house developed software tools.
• Radio Frequency lab with RF sources, ANSYS, Cadence
• MATLAB full bundle

• Jolly Rajendran,AM.EN.D*ECE16237 – Associate Professor at Rajadhani Institute of Engineering and Technology, Alamcode, Attingal
• Chithira Ravi-AM.EN.D*ECE12118 – Analog Design Engineer at Lightmatter
• Fabien Chidanand Robert-AM.EN.D*WNA12125 – Solar PV, large scale battery and microgrid Consultant
• Nevin Alex Jacob-AM.EN.D*ECE12115 – Analog Engineer at Intel
• Rahul T-AM.EN.D*ECE12117 – Principal Engineer at Microchip Technology
• Vineeth Sharma-AM.EN.D*ECE12116 – Manager, Analog Design, Analog Devices
• Karthi B-AM.EN.D*ECE09039 – Associate Professor, Amrita Vishwa Vidyapeetham, Coimbatore
• Rajesh Kannan Megalingam-AM.EN.D*ECE10061 – Associate Professor, Amrita Vishwa Vidyapeetham, Amritapuri & Director, Humanitarian Technology (HUT) Labs