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Present & Forthcoming Events:

  • Jun. 15, 2023 Miles Lindquist to present at IMS 2023 in San Diego, a paper entitled: ``New Real-Time Pulsed-RF NVNA Testbed for Isothermal Characterization of Traps in GaN HEMTsNew Real-Time Pulsed-RF NVNA Testbed for Isothermal.''

Recent News:

  • March 2023 The Nonlinear RF Lab and CLASS lab have been awarded a DURIP grant to upgrade their test facilities with high bandwidth mm-Waves.
  • Jan. 23, 2023 Miles Lindquist presented ARFTF 100th in Las Vegas, a paper entitled:
    Experimental Validation of ASM-HEMT Nonlinear Embedding Modeling of GaN HEMTs at X-band,
  • Jan. 23, 2023 Dominic Mikrut presented at PAWR, in Las Vegas, a paper entitled:
    A Comparison Study on the Broadband Performance of Load-Modulated Architectures using Nonlinear Embedding at 20 GHz
  • Jan. 23, 2023 Dominic Mikrut presented at PAWR, in Las Vegas, a paper entitled:
    Broadband Outphasing Power Amplifier Using Doherty-Chireix Continuum in a GaN MMIC Process,
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  • Apr. 28, 2022 Prof. Roblin gave an invited talk at WAMICON, Clearwater Beach, FL. The paper was untitled: The Analytic Doherty-Outphasing Power Amplifiers Continuum Theory, .
  • Mar. 2, 2021 Mr. Yunsik Hahn received the 2021 Outstanding Teaching Assistant (TA) award from the ECE Department at the Ohio-State-University. Yunsik was the TA for both our passive ECE 5017 and active ECE 5027 microwave labs. Prof. and Chair Hesham Elgamal announced the news in an email to the ECE faculty.

  • Special Issue
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  • Jan. 22, 2021 Dr. Nicholas Miller of AFRL and Patrick Roblin organized a joint RWW/ARFTG workshop on Friday morning. About 30 persons attended the 4 hour workshop. The attendees were so engaged that the questions and answers period for the panel lasted 30 more minutes than planed.
    • Miles Lindquist, OSU Ph.D. student gave a lecture (PDF) on "ASM-HEMT Embedding Model for Accelerated Design of PAs." A recording of his talk is available at:
  • Jan. 18-22, 2020 P. Roblin participated in ARFTG96 at RWW to give a lecture in the NIST/ARFT short-course and lead the NVNA users's forum.
    • Thaimi Niubo Aleman lecture Conf. Proceedings (PDF)
    • P. Roblin Short Course on NVNAs
  • Nov. 16 and 16 , 2020 Chenyu Liang and Hsiu-Chen Chang PhD defenses were held on-line. About 30 peoples attended from as far away as China, Sweeden, Portugal, Peru, Mexico, Boston, Boulder, Cedar Rapid as well as OSU. Both Chenyu and Hsiu-Chen passed with high praises from their committees for their achievements.
  • Jan. 27, 2020 Mr. Chenyu Liang presented a paper on "Optimal Two-Way Hybrid Doherty-Outphasing Power Amplifier," at PAWR/RWW in San Antonio.
  • Jan. 26-29, 2020 P. Roblin attended ARFTG94 at RWW in San Antonio from Jan. 26 to 29 to give a lecture in the NIST/ARFT short-course, co-chair a PAWR session and lead the NVNA users's forum.
  • Aug. 27, 2019 Mr. Chenyu Liang received the 2019 Outstanding Teaching Assistant (TA) award from the ECE Department at the Ohio-State-University. Chenyu was the TA for both our passive and active microwave labs. Prof. and Chair Hesham Elgamal announced the news at the ECE faculty 2019 academic year kick-off meeting.

    For more info visit this link
  • Jun. 7, 2019 Thaimi Niubo Aleman, and her co-authors Yunsik Hahn, Patrick Roblin, Jean-Pierre Teyssier, J. Apolinar Reynoso-Hernandez, Vanessa Chen, Siddharth Rajan presented a paper on ''Calibrated Digital Predistortion Using a Vector Network Analyzer as the Receiver,'' at ARFTG93 during the IMS 2019 Microwave week in Boston.
    Conf. Proceedings (PDF)
    A video recording is available here.



  • Jun. 6, 2019 Prof. Karun Rawat and Patrick Roblin co-chaired the NVNA users's forum during the IMS week in Boston. Chenyu Liang and Thaimi Niubo Aleman gave a presentation on dual-input PA characterization: Announcement (PDF) .

  • Jun. 3, 2019 Prof. Antonio Raffo and Patrick Roblin co-chaired an IMS/ARFTG workshop on "WMD: Measurement and Design Techniques for Next-Generation Communication Systems," IMS 2019, Boston. HTML LINK



  • Apr. 8-9, 2019 Prof. Roblin gave an invited talk at WAMICON, Cocoa Beach, FL. The paper was untitled: Class-E PA Prototype Using An Embedding Model .

  • Jan. 21-23, 2018 Chenyu Liang of OSU presented a paper at RWW 2019 and participated with Prof. Roblin in the RWW "Demo Track" with the presentation of a GUI on "Automatic Algorithm for the Direct Design of Asymmetric Doherty Power Amplifiers," . As indicated by the displayed GUI timer, the PA is designed in 15 sec at the package reference planes and verified in a power seep in 31 sec using OSU nonlinear embedding device model.
    My Picture



  • Jan. 21-23, 2018 Prof. Roblin was the TPC Co-Chair (lead) at ARFTG92 in Orlando. He also gave a lecture at the NIST/ARFTG Short Course, lead the NVNA Users's Forum and participated in a RWS workshop on linearization.

  • Dec. 12-14, 2018 General Co-Chair for the IEEE- MMTT-S Latin America Microwave Conference (LAMC). Call for Paper . Conference Website: http://lamc-ieee.org. Prof. Roblin also gave a keynote lecture at LAMC and presented a paper on Generalized Class-J Theory .





  • Jan. 21, 2019 Prof. Roblin gave a DML lecture at RWW, DML Special Session, Orlando, Florida. The host was Prof. Markus Gardill.

  • Nov. 29, 2018 Prof. Roblin gave a DML lecture at Univ. Central Florida, Orlando, MTT/AP Chapter. The host was Mr. Mahmood Shirazi.

  • Nov. 28, 2018 Prof. Roblin gave a DML lecture at Univ. South Florida, Tampa, FL, Student Chapter. The host was Mr. Enrique Gonz├ílez.

  • Nov. 2, 2018 Prof. Roblin gave a DML lecture at CLASTECH, Los Angeles, CA. The host was Dr. H. J. De Los Santos.

  • Nov. 1, 2018 Prof. Roblin gave a lecture on PAs at NXP, Chandler/Phoenix, AZ. The host was Dr. Jeff Jones.

  • Oct. 30, 2018 Prof. Roblin gave a DML lecture at Univ. of Arizona, Tuscon, AZ, Student Chapter. The host was Ms. Yashika Sharma.

  • Sep. 23, 2018 Prof. P. Roblin and Christophe Gaquiere organized a workshop on "GaN HEMT Characterization and Modeling for mm-Wave Power Amplifier Applications" at EuMC 2018, Madrid, Spain.



  • Sept. 21, 2018 Prof. Roblin gave a DML lecture at Italy, Politecnico, Turin, Italy. The host was Prof. Fabrizio Bonani.



  • Sept. 19, 2018 Prof. Roblin gave a DML lecture at Univ. Salento, Lecce, Italy. The host was Prof. Luciano Tarricone.



  • Sept. 16, 2018 Prof. Roblin gave a DML lecture at Univ. of Belgrade, Belgrade, Serbia. The host was Prof. Zlatica Marinkovic.



  • Sept. 13, 2018 Prof. Roblin gave a DML lecture at Aalto Univ, Helsinki, Finland. The host was Prof. Haneda Katsuyuki.

  • Sept. 13, 2018 Prof. Roblin gave a lecture on PAs at Nokia-Bell Labs, Epsoo, Finland. The host was Dr. Jyri Putkonen.


  • May 28, 2018 Prof. Roblin gave a DML lecture at UEC Chofu, Tokyo, Japan. The host was Dr. Ryo Ishikawa.



  • May 24, 2018 Prof. Roblin gave a DML lecture at Doshisha Univ., Kyoto, Japan. The host was Dr. Masashi Nakatsugawa.



  • May 23, 2018 Prof. Roblin gave a lecture on PAs at Mitsubisi, Osaka, Japan. The host was Dr. Akira Inoue.

  • May 21, 2018 Prof. Roblin gave a DML lecture at Kyung Hee Univ. Seoul, Korea. The host was Prof. Chang Woo Kim and Youngi Kim


  • May 18, 2018 Prof. Roblin gave a lecture on PAs at Samsung, Suwon, Korea. The host was OSU aluminus Dr. Jong Soo Lee.

  • May 17, 2018 Prof. Roblin gave a DML lecture at KAIST, Daejeon, Korea. The host was Prof. Chul Soon Park and OSU Alumini Prof. SeokJoo Doo.



  • May 15, 2018 Prof. Roblin gave a DML lecture at Shanghai Jiao Tong Univ., Shanghai, China . The host was Prof. Ming Tang.



  • May 14, 2018 Prof. Roblin gave a lecture on PAs at Huawei Technologies, Shanghai, China. The host was Dr. Xiao Yuxiang.


  • May 10, 2018 Prof. Roblin gave a DML lecture at Univ. of Posts and Comm., Chongqing, China. The host was Prof. Huadong Wang.


  • May 7, 2018 Prof. Roblin gave a DML lecture at UESTC, Chengdu, China. The host was Prof. Jiang Xiong and OSU postdoc alumini, Dr. Ying and Xiagoyin Liu.



  • May 7, 2018 Prof. Roblin gave a DML plenary talk at ICMMT 2018 conference, Chengdu, China.

  • May 5, 2018 Prof. Roblin gave a DML lecture at Tsinghua Univ., Beijing Chapter, China. The host was Prof. Wenhua Chen.

  • Mar. 27, 2018 Prof. Roblin gave a DML lecture at Raleigh MTT Chapter, NC State Univ. The host was Prof. Spyridon Pavlidis.

  • Mar. 27, 2018 Prof. Roblin gave a lecture on PAs at Wolfspeed, Raleigh, NC. The host was Jeremy Fisher.

  • Mar. 15, 2018 Prof. Roblin gave a DML lecture at Manchester, New Hampshire. The host was Dr. Don Sherwood.

  • Nov. 14, 2017, Noon "Nonlinear Microwave Circuits (PART II) - Design of High Efficiency Power Amplifier using Nonlinear Embedding." To view the Webinar, visit the IEEE link or the Youtube link


  • Oct. 12, 2017 Prof. Roblin gave a DML lecture in Dallas, Texas.

  • Oct. 11, 2017 Prof. Roblin gave a DML lecture at U.C Davis in Sacremento, California.

  • Oct. 10, 2017 Noon Prof. Roblin gave a Webinar on "Nonlinear Microwave Circuits (PART I) - Vector Nonlinear Microwave Measurements and Behavioral Modeling." To view the Webinar, visit the IEEE MTT link or the Youtube link

    September 2017 The Ohio-State University to aquire a second NVNA based on the Keysight PNAX. Equipment is acquired as part of a 2016-2017 ONR Durip grant submitted by Prof. Sertel and Roblin. Participating in the NVNA equipment acquisition, are Prof. Siddarth Rajan, Prof. Emre Ertin, Prof. Randy Moses, ESL and the ECE department.

  • August 7, 2017 Prof. Roblin gave three DML lectures in South Africa, Pretoria at the University of Pretoria. The host was Prof. Tinus Stander.

  • August 2, 2017 Prof. Roblin gave a DML lecture at UCT in South Africa, Cape Town. The host was Prof. Riana Geschke.

  • August 1, 2017 Prof. Roblin gave a DML lecture in Stellenbosch University, South Africa, Stellenbosch. The host was Prof. Dirk De Villiers.

  • July 24, 2017 Prof. Roblin gave a DML talk at Lincoln lab. Host at Lincoln Lab was Dr. Christopher Galbraith.

  • July 13, 2017 Prof. Roblin gave a DML lecture in Buffalo, NY. The host was Dr. Marlin R. Gillette. The event was held at SUNY, Buffalo.

  • June 28, 2017 Prof. Roblin gave a Plenary Talk at NAECON

  • June 7, 2017 Hsiu-Chen Chang presented a paper untitled "Asymmetrically-Driven Current-Based Chireix Class-F Power Amplifier Designed using an Embedding Device Model," at IMS 2017, Honolulu.

  • June 5 2017 Prof. Roblin co-organized with Prof. Apolinar of CISES a full-day workshop untitled "Novel 5G Applications of Nonlinear Vector Network Analyzer for Broadband Modulation and Millimeter Wave Characterization," at IMS 2107 in Honolulu. (Announcement).

  • May 17 and 18, 2017 Prof. Roblin gave two DML lectures in Peru, Arequipa at the Universidad Catolica San Pablo. The host was Prof. Guillermo Rafael Valdivia.

  • May 15 and 25, 2017 Prof. Roblin gave two DML lectures in Peru, Lima. The host was Prof. Manuel Yarleque of Pontificia Universidad Catolica del Peru.

  • April 25, 2017 Prof. Roblin gave an invited lecture at WAMICON, Cocoa Beach, Florida.

  • April. 6, 2017 Prof. Roblin gave a webex DML lecture at the MTT-S Long Island Chapter.

  • Jan. 17, 2017 Prof. Roblin gave a DML talk at Arizona State Univ., Phoenix. Talk organized by Prof. Sayef Kiaei.

  • Jan. 16, 2017 Prof. Roblin gave an invited talk at PAWR during RWW in Phoenix.

  • Prof. Roblin's service as Distinguished Microwave Lecturer in 2017 includes lectures in:

    • Long Island Chapter, April 6, 2017
    • Washington DC & Northern VA, March 16. 2017
    • Arizona State University, Phoenix, Jan 17, 2017.

  • Dec. 9 Prof. Roblin co-organized with Prof. Zoya Popovic of Univ. of Colorado at ARFTG88 in Austin, TX, a workshop entitled: PA Design Techniques for Future Wireless Systems.
  • Before his DML lecture at the New Jersey Institute of Technology, on Nov. 10, 2016, Prof. Roblin visited with Dr. Ajay K. Poddar (IEEEF) and Prof. U. L. Rohde (IEEEF) at Synergy Microwave.

  • Prof. Roblin's service as Distinguished Microwave Lecturer in 2016 includes lectures in:
    • N.I., Santa Clara, CA, 09/15/2016
    • Skyworks, Cedars Rapids, IO, 7/19/2016
    • Agilent Technologies, Santa Rosa, CA, 5/31/2016
    • ATI, University of Surrey, UK, 04/20/2016
    • IEMN, Lille, France, 04/18/2016
    • IMS, Bordeaux, France, 04/08/2016
    • XLIM, Limoges, France, 03/31/2016
    • Polytechnic Institute of Leiria, Portugal, 03/22/2016
    • University of Aveiro, Portugal, 03/21/2016
    • Instituto Superior Tecnico Lisbon, Portugal, 03/18/2016
    • KU Leuven, Belgium, 03/10/2016
    • TELECOM, France

  • May 23-27, 2016, Prof. Roblin attended IMS. He gave the introductory talk at the WME workshop on 5/23/2016. He was the lead organizer for the NVNA's Users Forum on 5/26/2016.

  • January 2016 to May 2016, Prof. Roblin was on Sabbatical in Paris, France at TeleCom ParisTech. He gave a series of lectures at Telecom and Universite Paris-Est, ESIEE, Paris.

    Dec. 3, 2015 Prof. Roblin to serve IEEE MTT as Distinguished Microwave Lecturer in 2016, 2017 and 2018. (ECE announcement).

  • Dec. 2, 2015, Prof. Roblin attended ARFTG 86 in Atlanta with two of his students Francisco Javier Martinez and Varun Ratnasamy who presented a poster and a paper respectively.

  • Oct 1st-2nd, 2015, Prof. Roblin was invited to give a lecture at INMMIC, in Taormina Italy. The lecture was entitled: ``Transistor Characterization and Modeling and the Use of Embedding Device Models for Microwave Amplifier Design.''

  • Sept. 14, 2015, Prof. Roblin visited Univ. of Waterloo, Ontario to participate as the external committee member in a Ph.D. defense. He also gave a lecture on his group research.

  • June 12, 2015: Prof. Roblin gave an invited lecture at SSPL, New Delhi, India.

  • June 10, 2015: Prof. Roblin gave an invited workshop lecture at IIT Roorkee, India, Visited with Prof. Karun Rawat and Prof. Meenakshi Rawat (recently a postdoc in the OSU Nonlinear RF Lab). The trip was sponsored by IEEE, India.

  • June 1, 2015: Prof. Roblin gave an invited lecture at UESTC, Chengdu, China. Hosted by Prof. Huang and Prof. Tang (advisor of OSU visiting scholar Liu Ying).

  • May 28, 2015: Prof. Roblin was a Session keynote speaker at WCAM 2015 in Chongqing, China.

    1:Dr. Roblin, 2: Dr. Shuji Nakamura, Professor, University of California, Santa Barbara, USA. Nobel Prize in Physics 2014. Conference keynote speaker: Developments of InGaN-based High Brightness Blue LEDs and Laser Diodes.


  • May 25, 2015: Prof. Roblin gave a lecture at Nokia-Microsoft in Beijing, China. Visited with Dr. Cui Xian (Nonlinear RF lab aluminus) and his group. Dr. Cui's group is in charge of the radio part of the Windows Phones.

  • May 21, 2015: Mr. Liu Ying, visiting scholar in our group, presented a paper on "Novel Multiband Linearization Technique for Closely-Spaced Dual-Band Signals of Wide Bandwidth" at IMS 2015.

  • May 18, 2015: Prof. Roblin organized with Dr. David Root, Keysight Technologies, a workshop at IMS-2015 in Phoenix, AZ, entitled "Direct Extraction of FET Circuit Models from Microwave and Baseband Large-Signal Measurements for Model-Based Microwave Power Amplifier Design" (web link) .

  • April 2015: New research project supported Rockwell Collins on a new way to design PAs.

  • Feb. 19 and 20, 2015: Prof. Roblin invited to participe in the grant review panel "Fond de Recherche du Québec," Québec City. Visited with Dr. Ke Wu, Polytechnique Institute of Montréal and gave a talk at ÉTS, Montréal.

  • Dec. 5, 2014: Prof. Roblin organized a workshop with Prof. Zoya Popovic on "High-Efficiency Microwave Power Amplifiers: Design and Characterization" at ARTFT84 in Boulder, Colorado and presented a workshop talk "Designing high efficiency Doherty and Chireix power amplifiers using an Embedding Device Model."
  • Sept. 15, 2014: Prof. Roblin was invited to give a talk at the PA Symposium in San Diego, on "Concurrent Predistortion Linearization for Multiband Power Amplifiers," .

  • June 6, 2014: Pro. Roblin gives a workshop talk "Linearization of Multiband Power Amplifier for Non-contiguous Spectra," at IMS-2014 in Tampa, FL.

  • June 6, 2014: Dr. Meenakshi Rawat and her OSU co-workers wins the best paper award at ARFTG-WAMICON Conference IMS-2014 week in Tampa, FL.

  • November 2013: Dr. Meenakshi Rawat wins the best poster award at ARFTG82

  • Nov. 18-22, 2013: Prof. Roblin organizes the Fall ARFTG82 Conference at The Ohio State University in Columbus, Ohio.

  • June 2012: Mr. Haedong Jang and Youngseo Ko wins first prize at the MTT-11 Student Competition at the IMS 2012 Conference in Montréal.



roblin.1@osu.edu