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Karun Rawat
Karun Rawat Assistant Professor karunfec[at]iitr.ac.in +911332284830 Website
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 Power Amplifier Design with Embedding Device Model, Non-linear device modelling
  • 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
FromToDesignationOrganisation
2014 Till DateAssistant ProfessorDepartment of Electronics and Communication, Indian Institute of Technology Roorkee
20132014Assistant ProfessorCentre for Applied Research in Electronics, Indian Institute of Technology Delhi
20122013Postdoctoral FellowiRadio Lab, Department of Electrical Engineering, University of Calgary
20032007Scientist/Engineer-SCMicrowave Sensors Receiver Division at Space Applications Centre, Indian Space Research Organization
Honors and Awards
AwardInstituteYear
Technical Advisor PositionAvantel Ltd.2014
Senior Membership IEEE2013
Member Editorial BoardWiley International Journal RFMiCAE2013
2009, 2010, 2011, Research Production AwardUniversity of Calgary2011
First Prize in 3rd Annual Smart Radio ChallengeWireless Innovation Forum2010
Best Design Prize 3rd Annual Smart Radio Challenge Wireless Innovation Forum2010
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 AgencyYear
Broad-Band Gallium Nitride Based Doherty Power Amplifier for Efficient Amplification of High Crest FDST2014
Experiments development for Software defined radio SDR-labAmitec Electronics Ltd.2014
Participation in seminars
NamePlaceSponsored ByDate
IEEE APMC 2016 as Publication ChairNew DelhiIEEE APMC 20165/12/2016
IEEE APMC 2016 as Amplifiers and/or GaN device related techniques Session ChairNew DelhiIEEE APMC 20165/12/2016
National Conference on III-Nitride Materials and Devices as Guest SpeakerNew DelhiSSPL, DRDO9/02/2015
IEEE IMaRC Conference 2014 as Workshop organizer/Speaker BangaloreIEEE MTT IMaRC Conference15/12/2014
IEEE IMaRC Conference 2014 as Power Amplifier Session Co-chairBangaloreIEEE MTT15/12/2014
IEEE IMaRC Conference 2013 as Exhibition co-chairNew DelhiIEEE MTT14/12/2013
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
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
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
PHDs Supervised
TopicScholar NameStatus of PHDRegistration Year
Reconfigurable Concurrent Multi-band Doherty Power AmplifierRobin KalyanO2013
Bandwidth and Dynamic Range Extension of Load Modulation in Doherty PA ArchitectureAyushi BarthwalO2014
Characterization & Mitigation of Linear & Non-Linear Distortions in Six-Port ModulatorChetan PathakO2014
Bandwidth and back-off enhancement in Doherty Power AmplifierSujata GhoshO2015
LINC Transmitter Design for Multiband ApplicationsEkta AggrawalO2015
Efficiency Enhancement Schemes In Power Amplifiers For Wideband ApplicationsY. Mary Asha LathaO2015
Power Amplifier Design at High RF FrequencyHemant Kumar SinghalO2015
All Digital Transmitter using Delta Sigma ModulationNishant KumarO2016
Reliability of Gallium-Nitride based High Electron Mobility Transistor and circuitsSourabh JindalO2015
Visits to outside institutions
Institute VisitedPurpose of VisitDate
Ohio State UniversityTo Deliver Invited Talk and Seek for possible collaboration11/11/2013
University of CalgaryFor Carrying out ongoing Research Collaboration11/06/2014
Invitations
TopicOrganistaionCategoryYear
Invited talk on Bandwidth enhancement of load modulation techniques in Power amplifiers for upcoming wireless communicationIEEE ARFTG Microwave Measurement SymposiumT2017
Talk on Design methodologies of power amplifiers at National Level Short term course on Signal Processing and VLSI Design IEEE Electronic Devices Delhi ChapterI2017
Recent Trends in RF Power Amplifier and Wireless Transmitter DesignIEEE Asia Pacific Microwave Conference, 2015, ChinaT2015
Talk on Advances on Power AmplifierNational Conference on III-Nitride Materials and DevicesT2015
Talk on Understanding load modulation in power amplifiers at Target Training Program on Gallium Nitride device simulation and power amplifier design, SSPL, DRDOT2015
talk on the RF Power Amplifiers and Architectures for Upcoming Wireless CommunicationIEEE MSIT Delhi ChapterT2014
Talk on the Techniques in Multi-band/Multi-standard Doherty Power Amplifiers for Wireless TransmittersIEEE MTT/APS Columbus Chapter, ElectroScience Laboratory, Ohio State University TNov 2013
Talk on the Concept of Load-Modulation in Doherty Power Amplifier for Wireless TransmittersIEEE MTT-Delhi chapter TMay 2013
talk on the Power efficient multi-band/ multi-standard wireless transmitter for software defined radiosIEEE MTT Delhi Chapter TMay 2013
Participation in short term courses
Couse NameSponsored ByDate
RF Power Amplifiers and Application of Digital Techniques in RFCabinet Secretariat New Delhi11/04/2014
RF Techniques For Software Defined RadiosCabinet Secretariat New Delhi12/04/2014
Courses or Conferences Organised
Conference NameSponsored ByDate
Member Organizing Committee IMaRC 2013 IEEE MTT14/12/2013
Publication Chair IEEE Asia Pacific Microwave Conference APMC 2016IEEE MTT5-9 Dec.16
Special Lectures Delivered
TitlePlaceDate
Radio Frequency Transmitter Technology for Upcoming Wireless CommunicationMNNIT Allahabad03/03/2017
Microwave Engineering: RF Matching TechniquesUIE, Kurukshetra University20/10/2016
GaN Based DevicesRCI, DRDO, Hyderabad17/02/2016
Advances on power AmplifierSolid State Physics Laboratory, DRDO, New Delhi09/02/2015
Concurrent Multi-band Power Amplification for Wireless CommunicationNIT Delhi03/07/2014
Future developments of RF Transmitters for wireless communication C-DOT, Bangalore17/12/2014
Recent Trends and Advancements in Wireless Transmitter DesignUIE, Kurukshetra University08/05/2014
National International Collaboration
TopicOrganisationLevel
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)RP
Power Amplifier design using non-linear embedded modellingOhio State University (Prof. Patrick Roblin)RP
Electronic Band-gap, meta-materials for multi-band multi-harmonic matching networks.University of Calgary (Prof. F. Falcone)RP
Multi-band Transmitter and Power Amplifier design Tsinghua University Beijing (Prof. W. Chen)RP
Concurrent Multi-band Doherty Power AmplifierI.I.T DelhiPHD
Broadband Power Amplifier for efficient transmission of high Crest factor signalsI.I.T DelhiPHD
Books Authored
  1. Published book with title: “Multiband RF Circuits and Techniques for Wireless Transmitters”, Springer Verlag GmbH.
Refereed Journal Papers

Journal Articles Published

2017

  1. 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, Aug. 2017.
  2. 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.
  3. 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, ” in IEEE Transactions on Antenna and Propagation, 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.