IIT Roorkee Homepage
Karun Rawat

Karun Rawat

Associate Professor

karun.rawat[at]ece.iitr.ac.in
01332-284830
My Google Scholar
My Website

  • Power Amplifiers:, Broadband, load modulation, Doherty PA, pulse gate modulation, High Efficient PAs, Switch Mode PAs
  • Transceiver Design:, All-digital transmitters, Transceivers, Digital control of RF circuits, Transmit/Receive module
  • Chip Design:, CMOS and GaN MMIC based power amplifiers design, mixed signal design, GaN MMIC based RF Chip design
  • Modelling:, RF PA Design with Embedding Device Model, Non-linear device modelling, RF measurement
  • RF Circuits:, Multi-port Networks, Modulators , RF Analog Processing, mixers, LNA
  • Embedded Design:, FPGA based transceivers for wireless applications
  • Sensor Integration with IOT:, IOT based pedestrian counting, Cloud centric IOT
  • Wireless Communication using embedded platforms:, Software defined radio for Wireless communication


Award Institute Year Awarded
Research Production Award Department of Electrical Engineering , University of Calgary. 2009
Research Production Award Department of Electrical Engineering , University of Calgary. 2010
First and Best Design Prize in 3rd Annual Smart Radio Challenge Software Defined Radio Forum 2010
Research Production Award Department of Electrical Engineering , University of Calgary. 2011
Young Scientist Award (finalist) in the field of Innovation in Engineering and Physical Science NASI Scopus 2019
Outstanding Young Faculty Award Institute Research Fellowship, I.I.T Roorkee 2020
Degree Subject University Year Studied
PhD Electrical and Computers Engineering University of Calgary, Canada 2012
MS Electrical and Computers Engineering University of Calgary, Canada 2009
BE Electronics & Communication Engineering C.C.S. University Meerut,India 2002
Scheme Sponsoring Agency Other Faculties Year Sponsored
Design of Airborne Power Amplifiers for L-band and UHF frequency range (Ongoing) DEAL, DRDO Government of India 2020-2022
Wideband Gallium Nitride Based Outphasing Power Amplifier for Upcoming 5G Wireless Transmitters (Ongoing) Extra Mural (SERB Government of India) 2019-2022
Nonlinear GaN HEMT Device Characterization for Power Amplifier Design and Implementation at X-Band frequencies (Ongoing) ER&IPR (DRDO, Government of India) 2019-2022
Design & Development of Ultra-Wideband Multi-Octave Gallium Nitride Monolithic Microwave Integrated Circuit (MMIC) based Power Amplifier (Ongoing) IMPRINT2 (DST, Government of India) 2019-2022
Radio Frequency Power Amplifier Design & Distortion Mitigation for Energy and Spectrum Efficient 5G Wireless Transmitters (Ongoing) SPARC (MHRD, Government of India) 2019-2021
Broad-Band Gallium Nitride Based Doherty Power Amplifier for Efficient Amplification of High Crest Factor Signals (Completed) SERB, Government of India. 2014-2017
Infrastructural grant under Visvesvaraya PhD Scheme for Electronics and IT.(Completed) DeitY, Government of India 2016-2020
Consultancy project “Experiments development for Software defined radio SDR-Lab” (Completed) Industrial Client Amitec Electronics Ltd., New Delhi 2014
Consultancy project "RF Power Amplifier Design based on SSPL GaN Devices” (Completed) SSPL, DRDO, Government of India 2016-2018
Training to BEL on "Efficient and Linearized Power Amplifier and Transmitters RF Power Amplifier" (Completed) BEL, Bengaluru, India 2018-2019
Training to BEL on "GaN based MMIC PA Design"(Completed) BEL, Bengaluru, India 2019
GIAN Course on RF Power Amplifier Design and Integration for 4G/5G Applications” (Completed) MHRD, Government of India 2017
Study of Design Feasibility for High Power GaN based Power Amplifier at Ku-Band in Hybrid MIC Technology (Completed) ASemiT, DRDO, Government of India 2017-2019
Study and Design Challenges in GaN MMIC based Power Amplifier at Ku-Band (Completed) SSPL, DRDO, Government of India 2017-2020
a. Prof. Rawat has received several funding from various sponsored research projects and consultancies. His funding is supported by various Government funding agencies, National research labs, public sector units and private industries. For details, please visit www.karunrawat.com. . . .
Design of 5G Power Amplifiers Under Research Partnership Agreement with WIPRO Ltd. (Ongoing) WIPRO Ltd. 2023-2024
Membership Details
1. Senior Member IEEE
2. Member Technical Committee MTT-12: Microwave High Power Techniques.
3. Member MTT Special Interest Group in Microwave and Wireless Education.
4. Member, IEEE MTT, IEEE COMSOC, IEEE EDS.
5. Member Nonlinear VNA Forum, USA.
6. Chapter Chair, IEEE Communication Society Chapter
7. Member Editorial board of International Journal of RF and Microwave Computer-Aided EngineeringRFMiCAE, Wiley, since December, 2013.
8. Guest Editor of a special issue entitled “GAN HEMT Modeling and Circuits” for International Journal of RF and Microwave Computer-Aided Engineering, Wiley in 2018.
9. Reviewer of several IEEE Transactions, letters and Journals.
10. Publication Co-Chair in IEEE Asia Pacific Microwave Conference 2016, New Delhi, India, (sponsored by IEEE-MTT/AP).
11. Technical Program Co-Chair in IEEE India Council International Conference (INDICON) 2017, IIT Roorkee, Roorkee, Uttarakhand, India.
12. Exhibition Co-Chair in IEEE International Microwave and RF conference IMaRC 2013, New Delhi, India.
13. Member Technical committee: IMaRC 2014-2016, APMC 2016-2018.
Title Course Code Course Semester
RF Power Amplifier and Transmitter Design. ECN-557 Graduate Spring
Microwave Engineering ECN-531 Graduate Autumn
Microwave Theory & Circuits. EEL-713 Graduate Autumn
RF and Microwave Active Circuits CRL-712 Graduate Spring
Selected Topics in RFDT-III CRL-733 Graduate Autumn
Microwave Techniques. ECN-333 Undergraduate Autumn
Fundamental of Electronics. ECN-333 Undergraduate Spring
Microwave Integrated Circuits. ECN-542 Graduate Autumn
RF and Mixed Signal Circuits. ECN-342 Undergraduate Spring
Topic Scholar Name Status of PhD Registration Year
Reconfigurable Concurrent Multi-band Doherty Power Amplifier. R. Kalyan Completed 2013
Bandwidth and Dynamic Range Extension of Load Modulation in Doherty PA Architecture. A. Barthwal Completed 2014
Characterization & Mitigation of Linear & Non-Linear Distortions in Six-Port Modulator. C. Pathak Completed 2015
Bandwidth and back-off enhancement in Doherty Power Amplifier. Sujata Ghosh Completed 2015
Multi-Octave Transmitter Design With Filter-Less Harmonic Suppression Schemes For Power Amplifiers. H.K. Singhal Completed 2015
Wideband Continuous Mode Power Amplifiers for Outphasing Wireless Transmitters. E. Aggarwal Completed 2015
Waveform Engineering Inspired Power Amplifiers for Wideband Applications. Y.M. Asha Latha Completed 2015
Delta Sigma Modulation Based Digital Transmitter For Upcoming Wireless Communication. Nishant Kumar Completed 2016
Multi-Port Networks For RF Measurement and Wideband Transmitter Design. Anuj Kumar Sahoo Completed 2017
Broadband Transmit/Receive Front end functional block using GaN HEMT Technology. Ashish Jindal Ongoing 2018
RF Packaging & Thermal Design for High Power Amplifiers. Ahmad Zakaria Ongoing 2019
Design and Analysis of Wideband and Linearized Transmitter in Multi-Chip Module. Avinash Singh Ongoing 2019
Wireless Radio Design in Embedded Platform. Amrit Kumar Panigrahi Ongoing 2020
GaN HEMT Device Characterization Modelling and MMIC Design. B. Ganesh Pandurang Ongoing 2020
Design and Analysis of Linear and Efficient Bi-CMOS/CMOS Power Amplifier. Reddy Chaitanya Ongoing 2020
Power amplifier with high Spectral & Power efficiency for Wireless Communication in CMOS RFIC Technology. Kamini Singh Ongoing 2021
In-Band Harmonic Cancellation Schemes For Ultra-Wideband Wireless Transmitters. Tarun Kumar Suretia Ongoing 2021
High Efficiency & Linearized Power Amplifier Module Design. Nupur Sood Ongoing 2021
Frequency Agile RF Power Amplifiers for 5G Applications. Dr. Aijaz M. Zaidi (Postdoc) Completed 2021
RF Doherty Power Amplifiers, Active Antenna, RIS Dr. Mohammad Abdul Shukoor (Postdoc) Ongoing 2023
Prof. Rawat had supervised more than 15 Masters students till now in which one is ongoing and most of them are placed in reputated Government and Private Organizations like DRDO, AAI, IMD, BSNL, Texas Instruments, Qualcomm, Intel, Reliance Industries, etc. Masters Completed 2014-2023
Course Name Sponsored By Date Participated
RF Power Amplifier Design and Integration for 4G/5G Applications Global Initiative of Academic Networks (GIAN) scheme of Government of India 18/12/2017
RF Techniques For Software Defined Radios Cabinet Secretariat New Delhi 12/4/2014
RF Power Amplifiers and Application of Digital Techniques in RF Cabinet Secretariat New Delhi 11/4/2014
Transreciever Scheme for Promotion of Academic & Research Collaboration (SPARC) scheme of Gov. of India
Development of GaN MMIC Power Amplifiers. Impacting Research Innovation and Technology (IMPRINT2) Scheme of Government of India.
Nominated member of DST/GITA review committee for Technology Development Project. Technology Development Project DST, Gov. of India.
Title Place Date Delivered
Highly Linear and Linearized Power Amplifiers for mm-Wave Communications. Atlanta, USA 2021
Broadband PA for Wireless Applications. Madrid, Spain 2018
Advanced Applications of Nonlinear Vector Network Measurements for broadband RF Power Amplifiers Design and Linearization. Philadelphia, USA 2018
Emerging Trends in Power Amplifier design: Device Fabrication, Modeling and Linearization. Hyderabad, India 2015
Recent Trends in RF Power Amplifier and Wireless Transmitter Design. Nanjing, China 2015
Power Amplifiers and digital schemes for Efficient Multi-band/Multi-Standard Wireless Transmitters in context of Software Defined Radios. Bangalore, India 2014
Recent Trends and Advancements in Wireless Transmitter Design. Kurukshetra University May, 2014
Concurrent Multi-band Power Amplification for Wireless Communication. NIT Delhi July, 2014
RF Power Amplifiers and Architectures for Upcoming Wireless Communication. MSIT Delhi March, 2014
Power efficient multi-band/ multi-standard wireless transmitter for software defined radios. IIT Delhi May, 2013
Concept of Load-Modulation in Doherty Power Amplifier for Wireless Transmitters. IIT Delhi November, 2013
Techniques in Multi-band/Multi-standard Doherty Power Amplifiers for Wireless Transmitters. Ohio State university November, 2013
Microwave Active Devices & Components SCL Department of Space, Chandigarh June, 2015
Advances on power Amplifier SSPL, DRDO, New Delhi February, 2015
Advances in Power Amplifier design & linearization using device and behavioral modeling. Hyderabad, India December, 2015
Microwave Engineering: RF Matching Techniques Kurukshetra University October, 2016
Design methodologies of power amplifiers. Delhi University February, 2017
Bandwidth enhancement of load modulation techniques in Power amplifiers for upcoming wireless communication. Texas, Austin, USA December, 2016
Radio Frequency Transmitter Technology for Upcoming Wireless Communication. MNNIT Allahabad March, 2017
Design of GaN based Power amplifiers. PEC University of Technology, Chnadigarh August, 2017
GaN Based Power Amplifier Design: Current Perspective & Future Trends. SSPL, DRDO, New Delhi December, 2017
Power Amplifiers and Wireless Transmitters for Upcoming 5G Wireless Communication. DEAL, DRDO, Dehradun May, 2018
Waveform Engineering for Bandwidth Enhancement in Radio Frequency Power Amplifiers. Kolkata November 2018
Radio Frequency Power Amplifier Design and Challenges for 5G Wireless Communication. C-DAC Mohali, Punjab November,2018
Topic Organisation Level
Prof. Rawat has collaboration with academics and industries in various continents across the world including Canada and USA in North America, Mexico in South America, England, Germany, Spain in Europe and China and South Korea in Asia. For details, please visit www.karunrawat.com. . .
Prof. Fadhel Ghannouchi University of Calgary, Canada
Prof. M. Helaoui University of Calgary, Canada
Prof. Patrick Roblin Ohio State University, USA
Prof. Wenhua Chen Tsinghua University, Beijing, China
Prof. Francisco Falcone Universidad Publica de Navarra, UPNA, Spain
Prof. S.K. Koul CARE, IIT Delhi
Prof. A. Basu CARE, IIT Delhi
Prof. Sukomal Dey IIT Palakkad
Dr. Dushyant Sharma Wipro Ltd.
Dr. Venkata Vanukuru Global Foundries
Name Place Sponsored By Date
Multi-band Wireless Transmitter Design for Software Defined Radios. IIT Bombay IIT Bombay March 2012
SDR based power amplifiers / transmitters for advanced wireless and satellite communications. Florida, USA WAMICON April,2010
Software-defined-radios: Design architecture and efficient transmitters. Bangalore, India IEEE International symposium on Microwaves. December, 2008
Power Amplifier Hyderabad, India IEEE-MTT December, 2015
Microwave Devices and Circuits. Guwahati, India IEEE-MTT/AP December,2015
Title of Project Name of Student
Design of High Efficiency Multi-Standard Multi-Stage Doherty Power Amplifier. Girish Kumar Ajmera
Six Port Modulator Design using Six Port Microwave Network Lalbahadur Dube
Design of harmonic terminated power amplifier Parul Gupta
Design and Optimisation of Doherty Power Ampli er with Extended Efficiency Range Akhilesh K
Modeling of GaN HEMT and RF Power Amplifier Design Samarth Saxena
Analysis and Characterization of GaN HEMT based Power Amplifiers Viswas N.G,
Broadband Class E RF Power Amplifier Pankaj Kakkad
GaN Based Switch Mode Power Amplifier In Class-D Mode Jai Datt Poonia
Wide band Distributed RF power amplifier Ram Babu Kumar
Wideband Push-pull Power Amplifier Varun Deep Singh
Multiport Network Design and Application for Vector Network Ana Rashmi Soni
ON-Chip PA Design using GaN HEMT MMIC Process Ahmad Zakaria
Institute Visited Purpose of Visit Visit Date
Ohio State University To Deliver Invited Talk and Seek for possible collaboration 11/11/2013
University of Calgary For Carrying out ongoing Research Collaboration 11/6/2014
Topic Organisation Category Year
Invited talk on Bandwidth enhancement of load modulation techniques in Power amplifiers for upcoming wireless communication IEEE ARFTG Microwave Measurement Symposium T 2017
Talk on Design methodologies of power amplifiers at National Level Short term course on Signal Processing and VLSI Design IEEE Electronic Devices Delhi Chapter T 2017
Recent Trends in RF Power Amplifier and Wireless Transmitter Design IEEE Asia Pacific Microwave Conference, 2015, China T 2015
Advances on Power Amplifier National Conference on III-Nitride Materials and Devices T 2015
Understanding load modulation in power amplifiers at Target Training Program on Gallium Nitride device simulation and power amplifier design, SSPL, DRDO T 2015
RF Power Amplifiers and Architectures for Upcoming Wireless Communication IEEE MSIT Delhi Chapter T 2014
Techniques in Multi-band/Multi-standard Doherty Power Amplifiers for Wireless Transmitters IEEE MTT/APS Columbus Chapter, ElectroScience Laboratory, Ohio State University T Nov-13
Concept of Load-Modulation in Doherty Power Amplifier for Wireless Transmitters IEEE MTT-Delhi chapter T Nov-13
Power efficient multi-band/ multi-standard wireless transmitter for software defined radios IEEE MTT Delhi Chapter T May-13
Multi-band Wireless Transmitter Design for Software Defined Radios IIT Bombay T Mar-12
Conference Name Sponsored By Date
Member Organizing Committee IMaRC 2013 IEEE MTT 14/12/13
Publication Chair IEEE Asia Pacific Microwave Conference APMC 2016 IEEE MTT 5to9/12/16
IEEE International Microwave Symposium (IMS) IEEE 2021, Atlanta, USA
IEEE MTT European Microwave Conference, EuMC 2018 IEEE 2018
IEEE MTT International Microwave Symposium, IMS 2018 IEEE 2018
IEEE MTT Asia Pacific Microwave Conference IEEE MTT 2015
IEEE MTT International Microwave and RF conference IMaRC IEEE MTT 2015
IEEE MTT International Microwave and RF conference IMaRC 2014 IEEE MTT 2014
IEEE Asia Pacific Microwave Conference, APMC 2016 IEEE-MTT/AP 2016
IEEE Applied Electromagnetic Conference AEMC 2015 IEEE 2015
IEEE MTT International Microwave Symposium IEEE 2019
Special Training program in Efficient and Linearized Power Amplifiers and Transmitters & GaN based MMIC PA Design to Bharat Electronics Limited Academy of Excellence. 2019,2020,2021,2023

Book & Book Chapters:


1.Book Title:Multiband RF Circuits and Techniques for Wireless Transmitters”.

Publisher: Springer, ISBN 978-3-662-50440-6

Year: 2016


2.Book Title:Bandwidth and Efficiency Enhancement in Radio Frequency Power Amplifiers for Wireless Transmitters

Publisher: Springer, ISBN 978-3-030-38866-9

Year: 2020


3.Book Chapter Title:Power amplifier design based on nonlinear embedding models with particular examples in IET Book “Radio Frequency and Microwave Power Amplifiers: Theory, Design and Applications”, Guest Editor: Andrea Grebennikov.

Publisher: IET, ISBN 1785616196, 9781785616198

Year: 2019


PATENTS


1.Invention:Time Interleaved Digital Transmitter using Multi-Level Digital Quantization

Inventors:Karun Rawat,Nishant Kumar

Subject Area:Wireless Transmitters

Country of Patent:India

Status:Filed on June, 2018 (File No. 201811021993).


2.Invention:Reconfigurable Concurrent Multi-Band Digital Transmitter Using Delta Sigma Modulator and Augmented Noise Shaping.

Inventors:Karun Rawat,Nishant Kumar

Subject Area:Wireless Transmitters

Country of Patent:India

Status:Filed on October, 2018 (File No. 201811038732).


3.Invention:Multi-octave modes for switching power amplifiers

Inventors:Karun Rawat,Y.M. Ashalatha

Subject Area:Radio Frequency Power Amplifiers

Country of Patent:India

Status:Filed on July, 2020 (File No. 202011029361).


Journals


2023

1.   A. K. Sahoo and Karun Rawat, “Wideband Analog Polyphase Network for Harmonic Cancellation of UHF Power Amplifier," IEEE Transactions on Microwave Theory & Techniques, vol. 71, no. 12, pages 5209-5220, Dec. 2023.

2.  Y. M. A. Latha and Karun Rawat, " Continuous Class F−1 Ku Band GaN MMIC Power Amplifier with an Effect of Nonlinear Output Capacitance," IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 70, no. 10, pages 3887-3891, Oct. 2023.


2022

1.   P. Jaraut, S. Dhar, M. Helaoui, N. Boulejfen, M. Rawat, W. Chen, Karun Rawat, N. Outaleb and F. M. Ghannouchi, “Behavior Modeling and Digital Predistortion of Mismatched Wireless Transmitters using Convolutional Neural Networks,” IEEE Transactions on Circuits and Systems II: Express Briefs, 2022 DOI: 10.1109/TCSII.2022.3207525.

2.  Y. Mary Asha Latha and K. Rawat, "Extending the Design Space of Class E Mode to Design a Multi-Octave Power Amplifier," in IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 69, no. 12, pp. 4829-4833, Dec. 2022, doi: 10.1109/TCSII.2022.3195730.

3.    A. M. Zaidi, B. K. Kanaujia, T. Khan, M. T. Beg, Karun Rawat, K. Rambabu and S. R. Rengarajan, “Multiband Design Techniques for Passive Planar Microwave Circuits: A Review,” IEEE Microwave Magazine, vol. 23, no. 9, pp. 57-69, Sept. 2022, DOI: 10.1109/MMM.2022.3180496.

4.   A. K. Sahoo and Karun Rawat, “Design of an Ultrawideband Planar Guanella Balun," IEEE Transactions on Instrumentation and Measurement, vol. 71, pages 1-8, Jan. 2022.

5.   Y. M. A. Latha and Karun Rawat, “Design of Ultra-Wideband Power Amplifier Based on Extended Resistive Continuous Class B/J Mode,” IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 69, no. 2, pp. 419-423, Feb. 2022, DOI: 10.1109/TCSII.2021.3095379.

6.   N. Kumar, Karun Rawat and F. M. Ghannouchi, “Multi-Band Transmission Using Reconfigurable Complex Multi-Band Delta Sigma Polar Modulator,” IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 69, no. 1, pp. 94-98, Jan. 2022, DOI: 10.1109/TCSII.2021.3092565.


2021

1.    E. Aggrawal and Karun Rawat, "Exploring Feasible Design Space for Multi-Octave Power Amplifier Using Nonlinear Embedding," IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 68, no. 8, pages 2800-2804, August 2021.

2.   A. M. Zaidi, M. T. Beg, B. K. Kanaujia, Karun Rawat, S. Kumar, K. Rambabu, S. P. Singh and A. Lay-Ekuakille, "A Dual-Band Rat-Race Coupler for High Band Ratio Wireless Applications," IEEE Transactions on Instrumentation and Measurement, vol. 70, pp. 1-6, Oct. 2021, Art no. 2006806, DOI: 10.1109/TIM.2021.3119131.

3.    N. Kumar, Karun Rawat, " Coding Efficiency Enhancement using Time Interleaved level splitting and Optimized Multi-Level Delta Sigma Modulation in Digital Transmitter", IEEE Transactions on Circuits and Systems I, Accepted April 2021.

4.    A. Barthwal, Karun Rawat, S.K. Koul, "Dual input digitally controlled broadband three-stage Doherty power amplifier with back-off reconfigurability", IEEE Transactions on Circuits and Systems I, vol. 68, no. 4, April 2021, pp. 1421 – 1431.


2020

1.    H. Chang, P. Roblin, Y. Hahn, J. I. Martinez-Lopez, C. Liang and K. Rawat, "Frequency-Agile Class-J Power Amplifier With Clockwise Fundamental- and Second- Harmonic Loads," IEEE Transactions on Microwave Theory and Techniques, vol. 68, no.7, pp. 3184-3196,July 2020.

2.    H. K. Singhal and K. Rawat, "Digitally Assisted Harmonic Cancellation for Multi-Octave Filter-less Transmitter", IEEE Access, April 2020, DOI:10.1109/ACCESS.2020.2986264.

3.    H. K. Singhal and K. Rawat, "Board-Level Ku-Band Power Amplifier: Design and Challenges", IETE Journal of Research, March 2020, DOI:10.1080/03772063.2020.1742804.

4.    N. Kumar, K. Rawat and F. M. Ghannouchi, "Reconfigurable Digital Delta-Sigma Modulation Transmitter Architecture for Concurrent Multi-Band Transmission", IEEE Transactions on Circuits and Systems I, February 2020. (accepted)

5.    A. K. Sahoo and K. Rawat, "Geometrically progressive stub loading scheme for miniaturization of transmission line‐based components", in  International Journal of RF and Microwave Computer-Aided Engineering, January 2020, DOI: 10.1002/mmce.22140.


2019

1.    Y. M. Asha Latha, K. Rawat, P. Roblin, "Nonlinear Embedding Model based Continuous Class E/F Power Amplifier", IEEE Microwave Wireless Component Letters, September 2019. (accepted)

2.    E. Aggrawal and K. Rawat, "Reconfigurable Chireix Outphasing Power Amplifier over Multiple Frequency Bands," in IEEE Transactions on Circuits and Systems II: Express Briefs. July 2019, DOI:10.1109/TCSII.2019.2926529.

3.    S. Ghosh, K. Rawat, " Hybrid Analog/Digital Continuous Class B/J Mode for Broadband Doherty Power Amplifiers", IEEE Access, vol. 7, pp. 74986-74995, June 2019.

4.    Y. M. Asha Latha, K. Rawat, M. Helaoui, F. M. Ghannouchi, “Broadband Continuous Mode Power Amplifier with on-board Harmonic Injection", IET Microwaves, Antenna & Propagation, (published online), 2019, DOI: 10.1049/iet-map.2018.5885.

5.    C. Pathak, K. Rawat, " Nonlinear Characterization & Distortion Mitigation in Six-Port Modulator", IEEE Transactions on Instrumentation and Measurement, vol. 68, no. 4, pp. 1178-1188, April 2019.

6.    R. Kalyan, K. Rawat, S. K. Koul, "A Digitally assisted dual-input dual-band Doherty power amplifier with enhanced efficiency and linearity", IEEE Transactions on Circuits and Systems-II, vol. 66, no. 2, pp. 297-301, Feb. 2019.

7.    C. Pathak, K. Rawat, "Characterization and modeling of hardware imperfections in Schottky diode based six-port modulator," International Journal of RF and Microwave Computer-Aided Engineering, vol. 29, no. 6, 2019.


2018

1. S. Ghosh, K. Rawat, "A wideband two-stage Doherty power amplifier at high back-off by exploring feasible design space", Wiley International Journal of RF and Microwave Computer-Aided Engineering, vol. 28, no. 9, October 2018.


2. A. Barthwal, K. Rawat, S. K. Koul, "A Design Strategy for Bandwidth Enhancement in Three-stage Doherty Power Amplifier with Extended Dynamic Range", IEEE Transactions on Microwave Theory and Techniques, vol. 66, no. 2, pages: 1024-1033, Feb. 2018.

3. W. Chen, K. Rawat, R. Ma, "Special issue on GaN HEMT modeling and circuits," International Journal of RF and Microwave Computer-Aided Engineering, vol. 28, no. 8, October 2018.


2017

1.E. Aggrawal, K. Rawat, P. Roblin, "Investigating Continuous Class-F Power Amplifier Using Nonlinear Embedding Model", IEEE Microwave Wireless Component Letters, vol. 27, no. 6, pages 593–595, July 2017.

2.R. Kalyan, K.Rawat, S.K. Koul, "Reconfigurable and Concurrent Dual-band Doherty Power Amplifier for Multi-band and Multi-standard Applications", IEEE Transactions on Microwave theory and Techniques, vol. 65, no. 1, pages: 198-208, Jan. 2017.


2016

1. S. Saxena, K. Rawat, P. Roblin, "Continuous Class-B/J Power Amplifier Using Nonlinear Embedding Technique", IEEE Transactions on Circuit &      System-II, vol. 64, Issue 7, pages 837–841, July 2017.


2015

1.    K. Rawat, G. Gowrish, G. Ajmera, A. Basu, S.K. Koul, "Design scheme for broadband Doherty power amplifier using broadband load combiner", Wiley International Journal of RF and Microwave Computer-Aided Engineering, vol. 25, Issue 8, pages 655–674, October 2015.

2.    R. Kalyan, K. Rawat, K. S.K. Koul, " Design strategy of concurrent multi-band Doherty power amplifier", IET Microwaves, Antenna & Propagation, vol. 9, no. 12, pages:1313-1322, Sep. 2015.

3.    A. Barthwal, K. Rawat, S.K. Koul, "Bandwidth Enhancement of Three-Stage Doherty Power Amplifier Using Symmetric Devices", IEEE Transactions on Microwave theory and Techniques, vol. 63, no. 8, pages: 2399-2410, Aug. 2015.

4.    M. Jouzdani, M. M. Ebrahimi, K. Rawat, M. Helaoui, F.M. Ghannouchi, “Envelope Tracked Pulse Gate Modulated GaN HEMT Power Amplifier for Wireless Transmitters, ” IEEE Transaction on circuits and Systems-I, vol. 62, no. 2, pages:571-579, Feb. 2015.

5.    R. Bhattacharya, A. Basu, K. Rawat, S.K. Koul, “A high efficiency inductor-less broadband fully integrated CMOS power amplifier, ” Wiley International Journal of RF and Microwave Computer-Aided Engineering, Vol. 25, no. 4, pages 311–320, May 2015.


2014

1.    M. Rawat, K. Rawat, R. Darraji, F. E. Alfaro, S. A. Bassam, M. Helaoui, F. M. Ghannouchi, M. Fattouche and F. Falcone, “Cooperative network solution and implementation for emergency applications with enhanced position estimation capability,” Wireless Networks, Vol. 20, no. 5, pp 1157–1168 ,July 2014.

2.    L. Azpilicueta, M. Rawat, K. Rawat, F. Ghannouchi, and F. Falcone, “A Ray Launching-Neural Network Approach for Radio Wave Propagation Analysis in Complex Indoor Environments, ” IEEE Transactions on Antenna and Propagation, vol. 62, no. 5, pp. 2777-2786, May 2014.

3.    R. Bhattacharya, R. Gupta, A. Basu, K. Rawat & S. K. Koul, "A Fully Integrated Dual-Band CMOS Power Amplifier Using a Variable Switched Interstage Matching Network", IETE Journal of Research, Volume 60, Issue 2, 2014,pp- 139-144.

4.    M. Rawat, K. Rawat, F. Ghannouchi, S. Bhattacharjee and H. Leung, “Generalized Rational Functions for Reduced Complexity Behavioral Modeling and Digital Predistortion of Broadband Wireless Transmitters,” IEEE Transactions on Instrumentation and Measurement., vol. 63, no. 2, pp. 485 - 498, February 2014.

5.    L. Azpilicueta, M. Rawat, K. Rawat, F. M. Ghannouchi, F. Falcone, "Convergence analysis in deterministic 3D ray launching radio channel estimation in complex environments," Applied Computational Electromagnetics Society Journal, 2014.


2013

1.    K. Rawat, M. Rawat, M.S. Hashmi, F.M. Ghannouchi, “Dual Band branch-line hybrid with distinct power division ratio at two bands ” Wiley International Journal of RF and Microwave Computer-Aided Engineering, vol. 23, no. 1, Jan. 2013, pages 90–98.

2.    M. Rawat, K. Rawat, M. Younes and F. M. Ghannouchi, "Joint Mitigation of Non-Linearity and modulator imperfections in a dual-band Concurrent Transmitter Using Neural Networks," IET Electronics Letters, Vol. 49: Issue 4, pp. 253-255, February 2013.

3.    M. Rawat, K. Rawat, and F. M. Ghannouchi, “Three-Layered Biased Memory Polynomial for Dynamic Modeling and Predistortion of Transmitters,” IEEE Transaction on circuits and Systems-I, vol. 60, no. 3, pages:768-777, March 2013.

4.    M. Rawat, K. Rawat, M. Younes, F. M. Ghannouchi, "Erratum: Joint mitigation of nonlinearity and modulator imperfections in dual-band concurrent transmitter using neural networks," Electronics Letters, 2013.


2012

1.    K. Rawat, M.S. Hashmi, F.M. Ghannouchi, “Double the band and optimize” IEEE Microwave Magazine, vol. 13, no. 2, April 2012, pages: 69-82.

2.    K. Rawat, M.S. Hashmi, F.M. Ghannouchi, “Dual-Band RF Circuits and Components for Multi-standard Software Defined Radios” IEEE Circuit and Sys. Magazine, vol. 12, no. 1, Mar. 2012, pages: 12-32.

3.    K. Rawat, F.M. Ghannouchi, “Design methodology for dual-band Doherty power amplifier with performance enhancement using dual-Band offset lines,” IEEE Trans. Industrial Electronics, vol.59, no. 12, Dec. 2012, pages:4831-4842.


2011

1.    K. Rawat, F.M. Ghannouchi, “A Novel Dual-Band Matching Technique Based on Dual-Characteristic Impedance Transformer for Dual-Band Power Amplifier Design” IET Microwaves, Antennas & Propagation, vol. 5, no. 14, Nov 2011, pages: 1720-1729.

2.    K. Rawat, F.M. Ghannouchi, M.Rawat, M.S. Hashmi, “Analysis of Frequency Selective Impedance Loading of Transmission Lines for Dual Band Couplers,” Wiley International Journal of RF and Microwave Computer-Aided Engineering, vol. 21, no. 3, May 2011, pages: 325-335.

3.    W. Chen, S.A. Bassam, Li Xiang, Liu Yucheng, K. Rawat, M. Helaoui, F.M. Ghannouchi and F. Zhenghe,“ Design and linearization of concurrent dual-band Doherty power amplifier with frequency-dependent power ranges,” IEEE Transactions on Microwave theory and Techniques, vol. 59, no. 10, pp. 2537–2546, Oct. 2011.

4.    M. Rawat, K. Rawat, and F. M. Ghannouchi, “Recent Advances on Signal Processing Solutions for Distortion Mitigation Due to Power Amplifier and Non-Ideality of Transmitter System,” in journal Recent Patents on Signal Processing, vol. 1: no. 2, pp. 135-142, December 2011.


2010

1.    K. Rawat, M. Rawat, F.M. Ghannouchi, “Compensating I-Q Imperfections in Hybrid RF/Digital Predistortion with Adapted Look up Table Implemented in FPGA,” IEEE Transactions on Circuits and Systems II, vol. 57, no. 5, May 2010, pp. 389-393.

2.    M. S. Hashmi, F. M. Ghannouchi, P. J. Tasker, K. Rawat, “Highly Reflective Load-Pull Techniques for Microwave Power Device Characterization,” in IEEE microwave Magazine, vol.12 , no.4, pp. 96 - 107, Jan 2010.

3.    M. Rawat, K. Rawat, F.M. Ghannouchi, “Adaptive Digital Predistortion of Wireless Power Amplifiers/Transmitters Using Dynamic Real-Valued Focused Time-Delay Line Neural Networks,” IEEE Transactions on Microwave Theory and Techniques, vol.58 , no.1, pages: 95-104, Jan 2010.


2009

1. K. Rawat, F.M. Ghannouchi, “A Design Methodology for Miniaturized Power Dividers using Periodically Loaded Slow Wave Structure with Dual Band Applications,” IEEE Transactions on Microwave Theory and Techniques, vol. 57, no. 12, part 2, Dec 2009, pp. 3380-3388.


Conferences


2022

1.  Y. M. Asha Latha, M. Shariatifar and K. Rawat, "Performance Estimation of Continuous Class F−1 PA with Non-Ideal Harmonic Terminations," 2022 IEEE Microwaves, Antennas, and Propagation Conference (MAPCON), Bangalore, India, 2022, pp. 01-04, doi: 10.1109/MAPCON56011.2022.10047381.

2.  A. Kumar Sahoo, H. Kumar Singhal and K. Rawat, "Multi-Octave VHF Push-Pull Power Amplifier Using Coaxial Balun," 2022 IEEE Microwaves, Antennas, and Propagation Conference (MAPCON), Bangalore, India, 2022, pp. 157-160, doi: 10.1109/MAPCON56011.2022.10047401.


2021

1.   A. K. Sahoo, H. K. Singhal, and Karun Rawat, “Design of Ultra-Wideband Balun Using Coaxial Transmission Line,” IEEE MTT-S International Microwave and RF Conference (IMARC), 17th-19th December, 2021, Kanpur, India.

2.  Y. M. A. Latha and Karun Rawat, “Methodology to Design Multi-Octave Power Amplifier Using Extended Class B to Class J Continuous Mode,” IEEE MTT-S International Microwave and RF Conference (IMARC), 17th-19th December, 2021, Kanpur, India.



2020

1.  N. Kumar, Karun Rawat, and F. M. Ghannouchi, “Multi-Band All-Digital Transmission for 5G NG-RAN Communication,” IEEE 3rd 5G World Forum (5GWF), 10th-12th September, 2020, Bangalore, India.

2.  A. Z. Ahmad, E. Aggrawal, K. Rawat, “Design of 100 W LDMOS based Power Amplifier for cellular applications,” 7th International Conference on Signal Processing and Integrated Networks (SPIN), 27th-28th February, 2020, New Delhi, India.


2019

1.    Y. M. Asha Latha, K. Rawat, "Methodology to Realize Wideband High Efficiency Power Amplifier Using Active Harmonic Injection", 7th IEEE MTT-S International Microwave & RF Conference (IMaRC), 13th-15th December, 2019, Mumbai, India.

2.    N. Kumar, K. Rawat, "Delta Sigma Modulation based All Digital Transmitter for Upcoming SDR applications", 7th IEEE MTT-S International Microwave & RF Conference (IMaRC), 13th-15th December, 2019, Mumbai, India.

3.    S. Ghosh, K. Rawat, "A Broadband Doherty Power Amplifier Using Class B/J Continuum", 7th IEEE MTT-S International Microwave & RF Conference (IMaRC), 13th-15th December, 2019, Mumbai, India.

4.    K. Rawat, "Design Challenges In Continuous Mode Power Amplifiers", invited paper in 6th IEEE MTT-S International Wireless Symposium (IWS), 19th-22nd May, 2019, Guangzhou, China.

5.    S. Ghosh, K. Rawat, "Implementation of a Two-Input Digitally Assisted Doherty Transmitter for Enhanced Performance", 6th IEEE MTT-S International Wireless Symposium (IWS), 19th-22nd May, 2019, Guangzhou, China.

6.    A. K. Sahoo, K. Rawat, "Full 2-Port Vector Network Analyzer using Nonlinear Calibration of SixPort Reflectometer", 6th IEEE MTT-S International Wireless Symposium (IWS), 19th-22nd May, 2019, Guangzhou, China.

7.    P. Roblin, C. Chang, H. C. Chang, K. Rawat, "Class-E PA Prototype Using An Embedding Model," Invited Paper IEEE 20th Wireless and Microwave Technology Conference, WAMICON, Cocoa Beach, FL, USA, 2019.

2019.


2018

1.    E. Aggrawal, K. Rawat, "Chireix Outphasing Switched Mode Power Amplifier for Wireless Communication", 6th IEEE MTT-S International Microwave & RF Conference (IMaRC), 28th-30th November, 2018, Kolkata, India.

2.    E. Aggrawal, K. Rawat, “Analysis and Design of Chireix Outphasing Switched Mode Power Amplifier”, IEEE MTTS Latin America Microwave Conference (LAMC), 12nd-14th December, 2018, Arequipa, Peru.

3.    N. Kumar, K. Rawat, "Delta Sigma Modulation Based Digital Transmitter for Single and Dual Band Transmission", 6th IEEE MTT-S International Microwave & RF Conference (IMaRC), 28th-30th November, 2018, Kolkata, India.

4.    A. K. Sahoo, K. Rawat, “A Wideband Rat-race Coupler Using Stepped Impedance Resonator,” 5th IEEE MTT-S International Wireless Symposium (IWS), 6th-10th May, 2018, Chengdu, China, pp. 1-3.

5.    C. Pathak, K. Rawat, “Quadrature modulation using radio frequency wave correlation in multiport network,” 5th IEEE International Conference on Signal Processing and Integrated Networks (SPIN), New Delhi, India, 22nd-23rd February, 2018, pp.1-3.


2017

1.    N. Kumar, Jai Datt Poonia, Karun Rawat, " Class S Power Amplifier based on CSCD with Delta-Sigma Modulation",  IEEE Applied Electromagnetics Conference (AEMC), 19th-22nd December, 2017, Aurangabad, India.

2.    N. Kumar, K. Rawat, "Efficiency Enhancement in Delta-Sigma Modulator based Transmitter using Level Transformation", IEEE International Microwave and RF Conference (IMaRC), 11th-13th December, 2017, Ahmedabad, pp. 1-5.

3.    K. Rawat, Shiban Koul, "Efficiency and Bandwidth Enhancement in Power Amplifiers for Wireless Communication" invited paper in IEEE European Microwave Conference (EuMW), 8th-13th October, 2017, Nuremberg, Germany, .

4.    Pankaj Kakkad, Ekta Aggrawal, Karun Rawat, "De-embedded Model based Class-E Power Amplifier Using Waveform Engineering", IEEE International Conference on Computing Communication and Networking Technologies (ICCCNT), 3rd-5th July, 2017, New Delhi, India, pp. 1-4.

5.    K. Rawat, S. Saxena, P. Roblin, " Continuous Class-B/J Power Amplifier Using Nonlinear Embedding Technique", invited paper in special session of TCAS, IEEE International Symposium on circuits & Systems (ISCAS), 28th-31st May, 2017, Baltimore, USA, pp. 837-841.


2016

1.    Lalbahadur Dube, Karun Rawat, Anajan Basu, Shiban K. Koul, “Modulator Design Using Six Port Microwave Network at a Carrier Frequency of 1.9 GHz”, IEEE International Conference on Wireless Networks and Embedded Systems (WECON), 14th-16th October, 2016, Punjab, India, pp. 1-3.

2.     Ayushi Barthwal, Karun Rawat, Shiban Koul, "Wideband Tri-stage Doherty Power Amplifier with Asymmetric current ratios" IEEE International Microwave and RF Conference (IMaRC), 5th-9th December, 2016, New Delhi, India, pp. 1-4.

3.    R. Kalyan, K. Rawat, S. K. Koul, “Design of reconfigurable concurrent dual-band power amplifiers using reconfigurable concurrent dual-band matching network”, IEEE International Wireless Symposium (IWS), 14th-16th March, 2016, Beijing, China, pp. 1-4.

4.    Ekta Aggrawal, Samarth Saxena, Karun Rawat, " Broadband Power Ampliifer Design by Exploring Design Space of Continous ClassF mode" IEEE Asia Pacific Microwave Conference (APMC), 5th-9th December, 2016, New Delhi, India, pp. 1-4.

5.    K. Gumber, P. Jaraut, M. Rawat and K. Rawat, "Digitally assisted analog predistortion technique for power amplifier," 88th ARFTG Microwave Measurement Conference (ARFTG), Austin, TX, 2016.


2015

1.    Samarth Saxena, Karun Rawat, Patrick Roblin, “Class-F GaN Power Amplifier Design Using Model- Based Nonlinear Embedding”, IEEE Applied Electromagnetics Conference (AEMC), 18th-21st, December 2015, Guwahati, India, pp. 1-2.

2.    Robin Kalyan, Karun Rawat, Shiban K. Koul, “Design of Reconfigurable Concurrent Dual-Band Quarter-Wave Transformer with Application of Power Combiner/Divider”, IEEE International Microwave and RF Conference (IMaRC), 10th-12nd December, 2015, Hyderabad, India, pp. 169-172.


2014

1.    K. Rawat, Gowrish B, Girish Ajmera, Robin Kalyan, Ananjan Basu, Shiban Koul, and Fadhel Ghannouchi, "Design Strategy for Tri-Band Doherty Power Amplifier" 15th Annual IEEE Wireless and Microwave Technology Conference (WAMICON), 6th June 2014, Tampa, Florida, USA, pp. 1-3.

2.    A. Barthwal, G. Ajmera, K. Rawat, A. Basu, S.K. Koul, “Design scheme for dual-band three stage Doherty Power Amplifiers”, IEEE International Microwave and RF Conference (IMaRC), 15th-17th December, 2014, Bangalore, India, pp. 80-83.

3.    R. Bhattacharya, R. Gupta, A. Basu, K. Rawat, S.-K. Koul, “A Fully integrated CMOS Broad Band Power Amplifier Using a Low-Q Matching Strategy”, Asia Pacific Microwave Conference (APMC), 4th-7th November, 2014, Sendai, Japan, pp. 747-749.

4.    Gowrish, B, A. Bhat, A.B. Kiran, K. Rawat, "Optimal finite bit Pi representation", IEEE 2014 Region 10 Symposium, 14th-16th April, 2014, Kuala Lumpur, Malaysia, pp. 387-390.


2013

1.    Gowrish B., K. Rawat, A. Basu, S. K. Koul, “Broad-band matching network using band-pass filter with device parasitic absorption”, 82nd ARFTG Microwave Measurement Conference, 18th-21st November, 2013, Columbus, Ohio, USA, pp. 1-4.


2012

1.    K. Rawat, F. M. Ghannouchi, “Load-pull assisted CAD design of inverted Doherty Amplifier without quarter-wave transformer” 25th IEEE Canadian Conference on Electrical and Computer Engineering (CCECE), 29th April-2nd May, 2012, Montreal, QC, Canada, pp. 1-4.

2.    K. Rawat, M. Rawat, M.S. Hashmi, F. Falcone, F. M. Ghannouchi “Dual-Band Phase Offset line with Required Transmission Phases at two Operational frequencies” IEEE MTT-S International Microwave Symposium (IMS) 17th-22