Karun Rawat - Department of Electronics and Communication Engineering,Indian Institute of Technology Roorkee
Karun Rawat
Karun Rawat Associate professor karun.rawat@ece.iitr.ac.in +911332284830
Areas of Interest
  • 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
Professional Background
FromPeriodPositionOrganisation
2014-01-01OngoingAssistant ProfessorDepartment of Electronics and Communication, Indian Institute of Technology Roorkee
2013-01-011 year Assistant ProfessorCentre for Applied Research in Electronics, Indian Institute of Technology Delhi
2012-01-011 year Postdoctoral FellowiRadio Lab, Department of Electrical Engineering, University of Calgary
2003-01-014 years Scientist/Engineer-SCMicrowave Sensors Receiver Division at Space Applications Centre, Indian Space Research Organization
Honors and Awards
AwardInstituteYear
Guest Editor of special issueInternational Journal of RF and Microwave Computer-Aided Engineering, Wiley2018
Founding Director and ChairmanStartup: Linearized amplifier technologies and services private limited, Incubated in IIT Roorkee2017
Featured EngineerEEWeb Community2016
Technical Advisor PositionAvantel Ltd.2014
Senior Membership IEEE2013
Member Editorial BoardWiley International Journal RFMiCAE2013
MemberMTT Special Interest Group in Microwave and Wireless Education, SiGMaWE2020
First Prize in 3rd Annual Smart Radio ChallengeWireless Innovation Forum2010
Best Design Prize 3rd Annual Smart Radio Challenge Wireless Innovation Forum2010
2009, 2010, 2011, Research Production AwardUniversity of Calgary2011
Educational Details
DegreeSubjectUniversityYear
PhDElectrical and Computers EngineeringUniversity of Calgary, Canada2012
MSElectrical and Computers Engineering University of Calgary, Canada2009
BEElectronics & Communication EngineeringC.C.S. University Meerut,India2002
Sponsored Research Projects
TopicFunding AgencyStart DatePeriod
Study and Design Challenges in GaN MMIC based Power Amplifier at Ku-BandAdvanced Semiconductor Technology (ASemiT), DRDO, Government of India2018-01Ongoing
Study of Design Feasibility for High Power GaN based Power Amplifier at Ku-Band in Hybrid MIC TechnoAdvanced Semiconductor Technology (ASemiT), DRDO, Government of India2017-01Ongoing
Design & Characterization of High Efficiency Radio Frequency Switch Mode Power AmplifiersFaculty Initiation grant, IIT Roorkee2017-013 years 7 months
Infrastructural grantDeitY, Government of India, under Visvesvaraya PhD Scheme for Electronics and IT2016-01Ongoing
RF Power Amplifier Design based on SSPL GaN DevicesSolid State Physics Laboratory, DRDO, Government of India2016-014 years 7 months
Broad-Band Gallium Nitride Based Doherty Power Amplifier for Efficient Amplification of High Crest FDST2014-016 years 7 months
Experiments development for Software defined radio SDR-labAmitec Electronics Ltd.2014-016 years 7 months
Lab Facility for RF and Baseband techniques in Software Defined RadioIIT Delhi2013-017 years 7 months
Multiband/Multi-Standard Concurrent Doherty Power AmplifierFaculty Initiation grant, IIT Delhi2013-017 years 7 months
Participation in seminars
NamePlaceSponsored ByDate
Workshop co-organizer/SpeakerMadrid, SpainIEEE European Microwave Conference, EuMC 20182020-08
Workshop co-organizer/SpeakerPhiladelphia, USAIEEE International Microwave Symposium IMS 20182020-08
Technical Program Co-ChairRoorkee, IndiaIEEE India Council International Conference (INDICON) 20172020-08
Invited paperBaltimore, USAIEEE International Symposium on Circuits & Systems (ISCAS)2020-08
Invited paper Nuremberg, GermanyIEEE European Microwave Conference, EuMC 20172020-08
Workshop SpeakerTexas, Austin, USA88th IEEE ARFTG Microwave Measurement Symposium2020-08
Publication ChairNew Delhi, IndiaIEEE Asia Pacific Microwave Conference APMC 20162020-08
Organizer of PhD Initiative programNew Delhi, IndiaIEEE Asia Pacific Microwave Conference APMC 20162020-08
Workshop co-organizer/SpeakerHyderabad, IndiaIEEE International Microwave and RF conference IMaRC 20152020-08
Workshop co-organizer/SpeakerNanjing, ChinaIEEE Asia Pacific Microwave Conference APMC 20152020-08
Organizer of Special SessionGuwahati, India IEEE Applied Electromagnetic Conference AEMC 20152020-08
Guest SpeakerNew Delhi, IndiaNational Conference on III-Nitride Materials and Devices, SSPL, DRDO2020-08
Workshop organizer/Speaker Bangalore, IndiaIEEE International Microwave and RF conference Conference IMaRC 142020-08
Memberships
  • IEEE, Senior Member
  • Wiley Journal: RFMiCAE (Radio frequency and microwave computer aided engineering), Member Editorial board
  • IEEE Microwave Theory and Techniques Society, Member
  • IEEE Circuit and Systems Society, Member
  • IEEE Industrial Electronics Society, Member
  • IEEE Electronic Devices Society, Member
  • IEEE Young Professionals, Member
  • IEEE Solid State Circuits Society, Member
  • MTT Special Interest Group in Microwave and Wireless Education, SiGMaWE, Member
  • International Journal of RF and Microwave Computer-Aided Engineering, Wiley, Guest Editor of a special issue
Projects and Thesis Supervised
Title of ProjectNames of Students
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 amplifierParul Gupta
Design and Optimisation of Doherty Power Ampli er with Extended Efficiency RangeAkhilesh K
Analysis and Characterization of GaN HEMT based Power AmplifiersViswas N.G,
Modeling of GaN HEMT and RF Power Amplifier DesignSamarth Saxena
Broadband Class E RF Power AmplifierPankaj Kakkad
GaN Based Switch Mode Power Amplifier In Class-D ModeJai Datt Poonia
Wide band Distributed RF power amplifierRam Babu Kumar
Wideband Push-pull Power AmplifierVarun Deep Singh
Multiport Network Design and Application for Vector Network AnaRashmi Soni
ON-Chip PA Design using GaN HEMT MMIC ProcessAhmad Zakaria
PHDs Supervised
TopicScholar NameStatus of PHDRegistration Date
Reconfigurable Concurrent Multi-band Doherty Power AmplifierRobin KalyanO2013-01
Bandwidth and Dynamic Range Extension of Load Modulation in Doherty PA ArchitectureAyushi BarthwalO2014-01
Characterization & Mitigation of Linear & Non-Linear Distortions in Six-Port ModulatorChetan PathakO2014-01
Bandwidth and back-off enhancement in Doherty Power AmplifierSujata GhoshO2015-01
LINC Transmitter Design for Multiband ApplicationsEkta AggrawalO2015-01
Efficiency Enhancement Schemes In Power Amplifiers For Wideband ApplicationsY. Mary Asha LathaO2015-01
Power Amplifier Design at High RF FrequencyHemant Kumar SinghalO2015-01
All Digital Transmitter using Delta Sigma ModulationNishant KumarO2016-01
RF Measurement and Calibration TechniquesAnuj Kumar SahooO2017-01
Reliability of Gallium-Nitride based High Electron Mobility Transistor and circuitsSourabh JindalO2015-01
Visits to outside institutions
Institute VisitedPurpose of VisitDate
Ohio State UniversityTo Deliver Invited Talk and Seek for possible collaboration2013-01-01
University of CalgaryFor Carrying out ongoing Research Collaboration2014-01-01
Invitations
TopicOrganistaionDate
Invited talk on Bandwidth enhancement of load modulation techniques in Power amplifiers for upcoming wireless communicationIEEE ARFTG Microwave Measurement Symposium2017-01
Talk on Design methodologies of power amplifiers at National Level Short term course on Signal Processing and VLSI Design IEEE Electronic Devices Delhi Chapter2017-01
Recent Trends in RF Power Amplifier and Wireless Transmitter DesignIEEE Asia Pacific Microwave Conference, 2015, China2015-01
Advances on Power AmplifierNational Conference on III-Nitride Materials and Devices2015-01
Understanding load modulation in power amplifiers at Target Training Program on Gallium Nitride device simulation and power amplifier design, SSPL, DRDO2015-01
RF Power Amplifiers and Architectures for Upcoming Wireless CommunicationIEEE MSIT Delhi Chapter2014-01
Techniques in Multi-band/Multi-standard Doherty Power Amplifiers for Wireless TransmittersIEEE MTT/APS Columbus Chapter, ElectroScience Laboratory, Ohio State University 2020-08
Concept of Load-Modulation in Doherty Power Amplifier for Wireless TransmittersIEEE MTT-Delhi chapter 2020-08
Power efficient multi-band/ multi-standard wireless transmitter for software defined radiosIEEE MTT Delhi Chapter 2020-08
Multi-band Wireless Transmitter Design for Software Defined RadiosIIT Bombay2020-08
Participation in short term courses
Couse NameSponsored ByDate
RF Power Amplifier Design and Integration for 4G/5G ApplicationsGlobal Initiative of Academic Networks (GIAN) scheme of Government of India2020-08
RF Techniques For Software Defined RadiosCabinet Secretariat New Delhi2014-01
RF Power Amplifiers and Application of Digital Techniques in RFCabinet Secretariat New Delhi2014-01
Courses or Conferences Organised
Conference NameSponsored ByDate
Member Organizing Committee IMaRC 2013 IEEE MTT2020-08
Publication Chair IEEE Asia Pacific Microwave Conference APMC 2016IEEE MTT2020-08
Special Lectures Delivered
TitlePlaceDate
Design of GaN based Power amplifiersPEC University of Technology, Chandigarh2017-01
Radio Frequency Transmitter Technology for Upcoming Wireless CommunicationMNNIT Allahabad2017-01
Design Methodologies of Power AmplifiersSouth Campus, Delhi University, New Delhi2017-01
Microwave Engineering: RF Matching TechniquesUIE, Kurukshetra University2016-01
GaN Based DevicesRCI, DRDO, Hyderabad2016-01
Advances on power AmplifierSolid State Physics Laboratory, DRDO, New Delhi2015-01
Future developments of RF Transmitters for wireless communication C-DOT, Bangalore2014-01
Concurrent Multi-band Power Amplification for Wireless CommunicationNIT Delhi2014-01
Recent Trends and Advancements in Wireless Transmitter DesignUIE, Kurukshetra University2014-01
National International Collaboration
TopicOrganisation
Scheme for Promotion of Academic and Research Collaboration (SPARC)iRadio Lab, University of Calgary (Prof. Fadhel.M. Ghannouchi)
1. All-digital transmitter with pulse load modulation scheme 2. Memory effect compensation in Hybrid RF/Digital Predistortion system University of Calgary (Prof. Fadhel.M. Ghannouchi)
Power Amplifier design using non-linear embedded modellingOhio State University (Prof. Patrick Roblin)
Electronic Band-gap, meta-materials for multi-band multi-harmonic matching networks.University of Calgary (Prof. F. Falcone)
Multi-band Transmitter and Power Amplifier design Tsinghua University Beijing (Prof. W. Chen)
Concurrent Multi-band Doherty Power AmplifierI.I.T Delhi
Broadband Power Amplifier for efficient transmission of high Crest factor signalsI.I.T Delhi
Books Authored
  1.  “Multiband RF Circuits and Techniques for Wireless Transmitters”. ISBN 978-3-662-50440-6, Springer, 2016.
  2. "Bandwidth and Efficiency Enhancement in Radio Frequency Power Amplifiers for Wireless Transmitters" Springer 2018 (accepted contract signed).

Book Chapter

  1. Chapter 12: 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

Refereed Journal Papers

Journal Articles Published

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 (Early Access), DOI: 10.1109/LMWC.2019.2941919, Sep. 2019.
  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 (Early Access), DOI: 10.1109/TCSII.2019.2926529, July 2019.
  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, vol. 13, no. 9, pages 1402-1407, July 2019

2018

  1. S. Ghosh, K. Rawat, “A wideband two-stage Doherty power amplifier at high back-off by exploring feasible design space”, Int J RF Microw Comput Aided Eng, vol. 28, no. 9, pages 1-12, Nov. 2018.
  2. C. Pathak, K. Rawat, "Nonlinear Characterization & Distortion Mitigation in Six-Port Modulator", IEEE Transactions on Instrumentation and Measurement, vol. 68, no. 4, pages 1178-1188, Aug. 2018.
  3. R. Kalyan, K. Rawat, S. K. Koul, "A Digitally assisted dual-input dual-band Doherty power amplifier with enhanced efficiency and linearity", Transactions on circuits and systems-II, vol. 66, no.2, pages 297-301, Jul. 2018.
  4. A. Barthwal, K. Rawat, S.K. Koul, "A Design Strategy for Bandwidth Enhancement in Three-stage Doherty Power Amplifier with Extended Dynamic Range" accepted for publication in the IEEE Transactions on Microwave Theory and Techniques, vol. 66, no. 2, pages: 1024-1033, Feb. 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, Jun. 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, no. 7, pages 837-841, Nov. 2016.

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, Oct. 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, Issue 5, pages 1157-1168, Jul. 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 and 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.

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.

2012

  1. K. Rawat, M.S. Hashmi, F.M. Ghannouchi, “Double the band and optimize” IEEE Microwave Magazine, vol. 13, no. 2, pages: 69-82, April 2012.
  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, pages: 12-32, Mar. 2012.
  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, pages:4831-4842, Dec. 2012.

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, pages: 1720-1729, Nov 2011.
  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, pages: 325-335, May 2011.
  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,” Journal Recent Patents on Signal Processing, vol. 1: no. 2, pp. 135-142, Dec. 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, pages: 389-393, May 2010.
  2. M. S. Hashmi, F. M. Ghannouchi, P. J. Tasker, K. Rawat, “Highly Reflective Load-Pull Techniques for Microwave Power Device Characterization,” IEEE microwave Magazine, vol.12, no.4, pages: 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, pages: 3380-3388, Dec 2009.

Conference Article Published (Total 28)

  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 Dec., 2019, Mumbai, India. (accepted)
  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 Dec., 2019, Mumbai, India. (accepted)
  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. (accepted)   
  4. K. Rawat “Design Challenges in Continuous Mode Power Amplifiers”, IEEE International Wireless Symposium, Guangzhou, China, May 2019. (Invited Paper)
  5. S. Ghosh, K. Rawat “Implementation of a Two-Input Digitally Assisted Doherty Transmitter for Enhanced Performance”, IEEE International Wireless Symposium, Guangzhou, China, May 2019. (accepted).
  6. A. K. Sahoo, K. Rawat “Full 2-Port Vector Network Analyzer using Nonlinear Calibration of Six Port Reflectometer”, IEEE International Wireless Symposium, Guangzhou, China, May 2019. (accepted).
  7. E. Aggrawal, Karun Rawat, “Analysis and Design of Chireix Outphasing Switched Mode Power Amplifier”, IEEE MTTS Latin America Microwave Conference LAMC, 2018.
  8. E. Aggrawal, K. Rawat, "Chireix Outphasing Switched Mode Power Amplifier for Wireless Communication", 6th IEEE MTT-S International Microwave & RF Conference, Kolkata, India, December 2018. 
  9. N. Kumar, K. Rawat, "Delta Sigma Modulation Based Digital Transmitter for Single and Dual Band Transmission", 6th IEEE MTT-S International Microwave & RF Conference, Kolkata, India, December 2018. 
  10. A. K. Sahoo, K. Rawat, “A Wideband Rat-race Coupler Using Stepped Impedance Resonator,” IEEE International Wireless Symposium, Chengdu, China, May 2018.
  11. 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, Feb 2018, pp.1-3.
  12.  N. Kumar, Jai Datt Poonia, K. Rawat, " Class S Power Amplifier based on CSCD with Delta-Sigma Modulation", IEEE Applied Electromagnetics Conference (AEMC-2017),19th-22nd December,2017, Aurangabad, India.
  13.  N. Kumar, K. Rawat, " Efficiency Enhancement in Delta-Sigma Modulator based Transmitter using Level Transformation", IEEE International Microwave and RF Conference (IMaRC-2017),11th -13th December,2017, Ahmedabad, India.
  14. K. Rawat, Shiban Koul, "Efficiency and Bandwidth Enhancement in Power Amplifiers for Wireless Communication" invited paper in IEEE European Microwave Week (EuMW), 8th-10th October, 2017, Nuremberg, Germany.
  15. P. Kakkad, E. Aggrawal, K. Rawat, "De-embedded Model based Class-E Power Amplifier Using Waveform Engineering", IEEE International Conference on Computing Communication and Networking Technologies (ICCCNT-2017), 3rd-5th July, 2017, New Delhi, India.
  16. K. Rawat, S. Saxena, P. Roblin, “Continuous Class-B/J Power Amplifier Using Nonlinear Embedding Technique", invited paper in special session of TCAS, in IEEE International Symposium on circuits & Systems (ISCAS) 2017, 28th May-31st May, 2017, Baltimore, USA. 
  17. Ayushi Barthwal, K. Rawat, Shiban Koul, "Wideband Tri-stage Doherty Power Amplifier with Asymmetric current ratios" IEEE International Microwave and RF Conference (IMaRC-2016), Pages: 1-4, 8th – 9th Dec. 2016, New Delhi, India.
  18. Ekta Aggrawal, Samarth Saxena, K. Rawat, " Broadband Power Amplifier Design by Exploring Design Space of Continuous Class F mode" IEEE Asia Pacific Microwave Conference (APMC-2016), Pages: 1-4, 5th – 9th Dec. 2016, New Delhi, India.
  19. Lalbahadur Dube, K. 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, Pages: 1-3, 14th -16th Oct. 2016, Punjab, India.
  20. 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 2016), 14th-16th Mar. 2016, Beijing, China.
  21. Samarth Saxena, K. Rawat, Patrick Roblin, “Class-F GaN Power Amplifier Design Using Model- Based Nonlinear Embedding”, IEEE Applied Electromagnetics Conference (AEMC-2015), 18th -21st December 2015, Guwahati, Assam, India.
  22. R. Kalyan, K. Rawat, S. K. Koul, “Design of Reconfigurable Concurrent Dual-Band Quarter-Wave Transformer with Application of Power Combiner/Divider”, IEEE International Microwave and RF Conference (IMaRC2014), Pages: 169 - 172, 15th -17th December 2015, Hyderabad, India.
  23. 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), Tampa, Florida, USA, June 2014.
  24. 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), 2014, Pages: 80-83,15th -17th Dec. 2014, Bangalore, Karnataka, India.
  25. 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 2014 Pages: 747 – 749, 4th -7th Nov. 2014 (accepted and presented), Sendai, Japan.
  26. 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, Pages: 1-4, 18th-21st Nov. 2013, Columbus, Ohio, USA, DOI: 10.1109/ARFTG-2.2013.6737361.
  27. Gowrish, B; A. Bhat, A.B. Kiran, K. Rawat, "Optimal finite bit Pi representation", IEEE 2014 Region 10 Symposium, 14th -16th April 2014, Pages: 387-390, Kuala Lumpur, Malaysia.
  28. 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), Montreal, Canada, April 29-May 2, 2012.
  29. 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) 2012, Montreal, Canada, June 17-22, 2012.
  30. F. M. Ghannouchi, K. Rawat, “Doherty Power amplifier in software defined radio systems” invited paper in XXX URSI General Assembly and Scientific Symposium (GASS'2011), Pages: 1-4, 13th -20th August 2011, Istanbul, Turkey.
  31. Shubrajit Bhattacharjee, K. Rawat, Meenakshi Rawat, D. Wang, M. Helaoui, H. Leung, F. Ghannouchi, “Joint Evaluation and Mitigation of RF Impairments and Nonlinear Distortion in WiMAX Transceiver under Nakagami-m Fading Channel”, 24th IEEE Canadian Conference on Electrical and Computer Engineering (CCECE), Pages: 1-4, 8th -11th May, 2011, Niagara Falls, Ontario.
  32. M. Rawat, K. Rawat, F. Esparza, R. Darraji, V. Torres, Francisco Falcone, Fadhel Ghannouchi, “Directional beam forming for smart antenna with Ray-launching and neural networks”, 2011 IEEE AP-S International Symposium on Antennas and Propagation and 2011 USNC/URSI National Radio Science Meeting, Spokane, Washington, USA, July 3-8, 2011.
  33. V. Torres, F. Esparza, M. Rawat, K. Rawat, R. Darraji, F. M. Ghannouchi, Francisco Falcone, “Analysis of performance modeling of Wireless Systems in complex Indoor Scenarios”, 2011 IEEE AP-S International Symposium on Antennas and Propagation and 2011 USNC/URSI National Radio Science Meeting, Pages: 1-4, 3rd -8th July, 2011, Spokane, Washington, USA.
  34. K. Rawat, F.M. Ghannouchi “C-Band microstrip based band-pass filter with design oriented transmission zeros allocation” 24th IEEE Canadian Conference on Electrical and Computer Engineering (CCECE), Niagara Falls, Ontario, May 2011, Pages: 1-4.
  35. F. E. Alfaro, M. Rawat, R. Darraji, K. Rawat, V. Torres, F. Falcone and F. M. Ghannouchi, "RF Environment Behavior Modeling Based on 3-D Ray-Tracing and Neural Networks to Mitigate Multipath in Indoor Position Estimation," Wireless Innovation Conference, Pages: 1-4, Dec 2010, Washington DC, USA.
  36. K. Rawat, F.M. Ghannouchi “Design of Reduced Size Power Divider for Lower RF Band using Periodically Loaded Slow Wave Structure” in proceedings of IEEE International Microwave Symposium (IMS), Boston, June 2009, Pages: 613-616.
  37. K. Rawat, O. Hammi, F.M. Ghannouchi “Investigating Effects of Quadrature Imperfection of Vector Multiplier in Implementing RF/Digital Predistortion” in proceedings of IEEE Wireless and Microwave Conference (WAMICON), Florida, April 2009, Pages: 1-4.
  38. S. Tiwari, R. Darraji, S.A. Bassam, A. Kwan, K. Rawat, M. Rawat, M. Fattouche, F.M. Ghannouchi, “Practical result of wireless indoor position estimation by using hybrid TDOA/RSS algorithm” 23rd IEEE Canadian Conference on Electrical and Computer Engineering (CCECE), Pages: 1-5, 2-5th May, 2010, Calgary.

Patents:

  1. K. Rawat, N. Kumar, Patent application on "Reconfigurable Concurrent Multi-Band Digital Transmitter Using Delta Sigma Modulator and Augmented Noise Shaping" filed at the Indian Patent Office on October, 2018 (File No. 201811038732).
  2. K. Rawat, N. Kumar, Patent application on "Time Interleaved Digital Transmitter using Multi-Level Digital Quantization" filed at the Indian Patent Office on June, 2018 (File No. 201811021993).

 

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