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  • 3:53 PM, Sunday, 26 Sep 2021

Department of Avionics
     
IMMANUEL RAJA, Ph.D.
Assistant Professor
 
Office
Tel:+91-471-2568696
Fax:
Email:immanuelraja@iist.ac.in













Education

PhD and MSc (Engg) from Indian Institute of Science (IISc), Bangalore (2011 - 2016)

B.E. (ECE) from Madras Institute of Technology campus of Anna University, Chennai (2007 - 2011)

 

 


Course Offered

AVM 863: RF Integrated Circuits

Offered: Jan - May 2021 (present), 2020

The course covers the fundamentals of CMOS RF frontend for wireless communication systems along with circuits such as Low noise amplifiers (LNAs), Mixers, Power amplifiers, Oscillators, Phase-locked loops (PLLs). The course includes a design project which carries 40% of the credit towards the grade. A commercial 65nm CMOS process is used for design exercises and projects. This course is offered as an elective to students from MTech - VLSI & Microsystems, MTech - RF & Microwave Engineering and BTech - Electronics and Communication Engineering. 

 

AVM 621:  Mixed Signal VLSI Design 

Offered: Jan - May 2021 (present), 2020, 2019

The course deals with design of CMOS VLSI circuits for data converters and high-speed IO interfaces. Various circuits and systems related to the design of Analog-to-digital  converters (ADC), Digital-to-analog converters (DAC), high-speed wireless transmitter and receivers. This is an advanced course and requires AV 611 (Analog VLSI Circuits) as the requiste background. This course includes a design project which carries 50% of the credit towards the grade. A commercial 65nm CMOS process is used for design exercises and projects. This course is offered as a core course to the students from MTech - VLSI & Microsystems. 


AVM 611: Analog VLSI Circuits

Offered: Aug - Dec 2020, 2019

The course covers the analysis and design of CMOS analog VLSI circuits. The design of opamps is the core of the project with its associated circuitry. This course includes a design project which carries 40% of the credit towards the grade. A commercial 65nm CMOS process is used for design exercises and projects. This course is offered as a core course to the students from MTech - VLSI & Microsystems and as an elective to the BTech - Electronics and Communication Engineering.  


AV 211: Analog Electronic Circuits & AV 231: Analog Electronic Circuits Lab

Offered: August - Dec 2020, 2019

This course deals with the design of analog electronic circuits and systems using BJTs, MOSFETs, op-amps and timer ICs. 

 

AV 213: Network Analysis 

Offered: Aug - Dec 2020

This course deals with the analysis of basic RL, RC, RLC circuits in time domain and frequency domain. Two-port networks, bode plots and relationships between step response, pole locations and frequency domain performance are covered. 


Experience

Assistant Professor in Department of Avionics, Indian Institute of Space Science and Technology (March 2019 till present)

Senior Engineer with Qualcomm Inc., Bangalore (Jan 2017 - Feb 2019)

Intern at Global Foundries, Bangalore (July - Nov 2015)

Intern at IBM, Bangalore (May - June 2015)


Research Work / Area

I work in the broad area of analog, mixed-signal and RF IC design. Some of the areas in which I am currently undertaking research are:

  1. Ka-band (24-40 GHz) transmitters with integrated power amplifiers (PAs) - Improving linearity-efficiency trade-offs in the context of millimeter-wave 5G frontends. 
  2. Design of on-chip inductors, transformers and other passives for millimeter-wave and sub-THz applications
  3. CMOS based Sub-THz (100-500 GHz) circuits and systems 
  4. Wireless charging through beam-forming 
  5. High SNDR analog-to-digital converters 

Funded Project
  1. Design of a Transmitter with Integrated Power Amplifier (PA) for Millimeter-wave 5G Bands in 65nm CMOS [Dec 2020 - Dec 2022] - Funded by SERB - Start-up Research Grant (SRG) for Rs. 30 lakhs. 
  2. Design of On-Chip Passives for Millimeter-wave (Ka-band) Circuits [April 2020 - March 2022] - Funded by IIST-Fast Track Project for Rs. 10 lakhs. 
  3. ExoWorlds - A mission for study of Exo-planets (Sensor electronics)
  4. Electric Propulsion Diagnostics - Sensor electronics
  5. RF communication system for small satellites 

Teaching Interest

 

 


Publications

I. Raja and G. Banerjee, "A 0.75–2.5-GHz All-Digital RF Transmitter With Integrated Class-E Power Amplifier for Spectrum Sharing Applications in 5G Radios," in IEEE Transactions on Very Large Scale Integration (VLSI) Systems, vol. 28, no. 10, pp. 2109-2121, Oct. 2020, doi: 10.1109/TVLSI.2020.3005438.

J. S. Gaggatur, I. Raja and G. Banerjee, "On-Chip Non-intrusive Temperature Detection and Compensation of a Fully Integrated CMOS RF Power Amplifier," 2017 30th International Conference on VLSI Design and 2017 16th International Conference on Embedded Systems (VLSID), Hyderabad, 2017, pp. 21-26.

I. Raja, V. Khatri, Z. Zahir and G. Banerjee, "A 0.1–2-GHz Quadrature Correction Loop for Digital Multiphase Clock Generation Circuits in 130-nm CMOS," in IEEE Transactions on Very Large Scale Integration (VLSI) Systems, vol. 25, no. 3, pp. 1044-1053, March 2017.

I. Raja and G. Banerjee, "An inductor-less transmission line based 60 GHz PA in 65-nm CMOS with analog power control," 2016 IEEE International Conference on Electronics, Circuits and Systems (ICECS), Monte Carlo, 2016, pp. 149-152.

I. Raja, G. Banerjee, M. A. Zeidan and J. A. Abraham, "A 0.1–3.5-GHz Duty-Cycle Measurement and Correction Technique in 130-nm CMOS," in IEEE Transactions on Very Large Scale Integration (VLSI) Systems, vol. 24, no. 5, pp. 1975-1983, May 2016.

J. S. Gaggatur, V. Khatri, I. Raja, M. K. Lenka and G. Banerjee, "Differential multi-phase DLL for reconfigurable radio frequency synthesizer," 2014 IEEE International Conference on Electronics, Computing and Communication Technologies (CONECCT), Bangalore, 2014, pp. 1-5.