Case 6:22-cv-01162-ADA Document 74-7 Filed 11/22/23 Page 1 of 26
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`UNITED STATES DISTRICT COURT
`WESTERN DISTRICT OF TEXAS
`WACO DIVISION
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` Plaintiff,
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`PARKERVISION, INC.,
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` v.
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`REALTEK SEMICONDUCTOR CORP.,
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` Defendant.
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`Case No. 6:22-cv-01162-ADA
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`JURY TRIAL DEMANDED
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`DECLARATION OF DR. DAVID RICKETTS
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`Case 6:22-cv-01162-ADA Document 74-7 Filed 11/22/23 Page 2 of 26
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`I have personal knowledge of the facts set forth in this Declaration and, if called to testify
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`as a witness, would testify under oath:
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`I.
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`BACKGROUND
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`1.
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`I have been retained as an expert on behalf of ParkerVision, Inc. (“ParkerVision”)
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`in the above-captioned litigation action against Defendant Realtek Semiconductor Corporation
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`(“Realtek”).
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`2.
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`I understand that ParkerVision asserts the following patents against Defendant:
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`U.S. Patent Nos. 6,049,706 (the “’706 patent”); 6,266,518 (the “’518 patent); 7,292,835 (the “’835
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`patent”); and 8,660,513 (the “’513 patent”) (collectively, the “patents-in-suit”).
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`3.
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`I have been asked by ParkerVision to provide my opinions on certain technical
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`aspects relating to the patents-in-suit.
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`4.
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`Details on various aspects of my professional experience and qualifications can be
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`found in my curriculum vitae, which is attached hereto as Appendix A.
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`5.
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`Based on my experience in the wireless communications industry, I have a detailed
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`understanding of radio frequency circuit design, including the radio frequency front end of cellular
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`phones.
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`II.
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`RELEVANT LEGAL PRINCIPLES
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`A. Level of Ordinary Skill in the Art
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`1.
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`I have been informed and understand that claims are construed from the perspective
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`of a person of ordinary skill in the art (“POSITA”) at the time of the claimed invention.
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`2.
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`In my opinion, a POSITA with respect to the patents-in-suit would have (i) a
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`Bachelor of Science degree in electrical or computer engineering (or a related academic field), and
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`at least two (2) additional years of experience in the design and development of radio frequency
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`1
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`Case 6:22-cv-01162-ADA Document 74-7 Filed 11/22/23 Page 3 of 26
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`circuits and/or systems, or (ii) at least five (5) years of experience and training in the design and
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`development of radio frequency circuits and/or systems.
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`3.
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`In view of my qualifications, experience, and understanding of the subject matter
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`of the invention, I believe that I meet the above-mentioned criteria and consider myself a person
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`with at least ordinary skill in the art pertaining to the patents-in-suit.
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`B. Legal Standard for Indefiniteness
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`4.
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`I understand that, under 35 U.S.C § 112, patent claims must “particularly point out
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`and distinctly claim . . . the subject matter which the applicant regards as his invention.” See § 112
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`¶ 2. I understand that a claim term is indefinite only if “read in light of the specification delineating
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`the patent, and the prosecution history, fail[s] to inform, with reasonable certainty, those skilled in
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`the art about the scope of the invention.” Nautilus, Inc. v. Biosig Instruments, Inc., 134 S. Ct. 2120,
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`2124 (2014).
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`III. OPINIONS
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`A. “quadrature-phase oscillating signal is out of phase with said in-phase oscillating
`signal by substantially 90 degrees” (’835 patent, claim 2)
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`5.
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`Claim 2 of the ’835 patent recites “wherein said quadrature-phase oscillating signal
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`is out of phase with said in-phase oscillating signal by substantially 90 degrees.” A POSITA
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`understands what it means for two signals to be “substantially 90 degrees” out of phase with each
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`other. The term is not indefinite to a POSITA.
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`6.
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`There are always imperfections in real-word signal processing. In cellular/wireless
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`systems, signals and circuit components are not perfect. A POSITA would therefore understand
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`that the term “substantially” is a modifier implying an approximation rather than perfect to account
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`for these realities.
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`2
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`I declare under penalty of perjury that the foregoing is true and correct to the best of my
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`knowledge.
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`Dated: November 22, 2023
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`______________________________
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`Dr. David S. Ricketts
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`3
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`Case 6:22-cv-01162-ADA Document 74-7 Filed 11/22/23 Page 5 of 26
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`APPENDIX A
`APPENDIX A
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`Case 6:22-cv-01162-ADA Document 74-7 Filed 11/22/23 Page 6 of 26
`David S. Ricketts
` Home/Cell: 412-805-9981
`david.ricketts@ncsu.edu
`
`Department of ECE
`3114 Engineering Building II
`890 Oval Drive
`Raleigh, NC 27606
`
`1. EDUCATION
` Harvard University
`
`Ph.D., 2006.
`
`Thesis: Electrical Soliton Modelocking.
`
`Advisor: Donhee Ham.
`
` Worcester Polytechnic Institute
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`M.S.E.E., 1997.
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`Thesis: AD6509, A 622 MHz Frequency Synthesizer.
`Advisor: John A. McNeill
`
`
` Worcester Polytechnic Institute
`
`B.S.E.E., 1995, with High Distinction.
`Thesis: Development methodology and control systems in a NASA GASCAN project.
`2. REASEARCH INTERESTS
` Mm-wave and Microwave circuits and systems
` RFID
` Wireless Power Transfer
` Analog and RF circuits
`3. AWARDS & FELLOWSHIPS
` Best Paper Award, IEEE Asia-Pacific Microwave Conference 2016.
` Certificate of Teaching Excellence, Derek Bok Center, Harvard University, 2013
` NSF CAREER Award, 2011
`Spin-torque Oscillator Arrays. 13 % funding rate in 2011.
` Wimmer Teaching Fellow, Carnegie Mellon University, 2009
`One of five fellows selected per year on a university wide bases. Award is for development of educational
`content for new courses.
` George Tallman Ladd Research Award 2009
`Awarded to the two junior faculty in the College of Engineering at CMU for outstanding research.
` National Academy of Engineers Frontiers of Engineering Education Recipient, 2009.
`Visualization of E&M for undergraduate course.
` DARPA Young Faculty Award, 2008
`Spin-torque oscillators for agile RF systems.
` McGraw-Hill Yearbook of Science and Technology, 2008
`Research on solitons selected as top research highlight for 2008.
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`Case 6:22-cv-01162-ADA Document 74-7 Filed 11/22/23 Page 7 of 26
`David S. Ricketts
`4. PROFESSIONAL EXPERIENCE
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`Full Professor of Electrical and Computer Engineering, North Carolina State University, 2012-
`
`
`My research centers on the application of physical phenomena to electrical devices, circuits and
`systems, covering a range of areas in electrical engineering. I focus on ultra-fast electronics and
`microwave systems.
`
`Visiting Researcher (Research Scientist), Massachusetts Institute of Technology, 2012-2013
`(On leave from NCSU)
`
`
`I am working with a team of 13 members on the DARPA ELASTx program. I am focusing on
`developing state-of-the-art power amplifier (PA) and power combining systems for mm-wave
`applications (Q-W band).
`
`
`Innovation Fellow and Visiting Associate Professor (2012), School of Engineering and Applied
`Science, Technology and Entrepreneurship Center, Harvard University, 2010-
`
`Research with graduate students at the School of Engineering and Applied Science and the
`Harvard Business School on Innovation in Science and Creativity, specifically the role of the
`individual in the creation of new knowledge. This work supports both scholarly research in this
`area as well as the development of educational material for courses taught at Carnegie Mellon
`and Harvard.
`
`
`Assistant Professor of Electrical and Computer Engineering, Assistant Professor (Courtesy) of
`Materials Science and Engineering, Carnegie Mellon University 2006-2012
`
`I was the PI of a successful 15 member DARPA team on Tip-directed Field-emission Assisted
`Nanofabrication, where we developed arrays of MEMS cantilevers to write nanoscale features (<
`10 nm) on Si and Ti surfaces with application in quantum electronic devices. In addition, I
`received my NSF CAREER award for my work on a nanoscale magnetic device, the spin-torque
`oscillator, where I am pursuing fundamental research on its ultimate performance and application
`into wider electronic systems. I also investigated many other interdisciplinary programs in
`circuits, systems and sensing, including a large DARPA program on high-speed circuits &
`energy with MIT. I received the NSF CAREER award, the DARPA Young Faculty Award and
`the George Tallman Ladd Research Award. I have also developed/redesigned several new
`courses at CMU in device physics, circuit design and innovation in science and have developed a
`new outreach program with Disney Animal Kingdom on animal conservation. I am a 2008
`Wimmer Teaching Fellow and an invited participant in the 2009 NAE, Frontiers of Engineering
`Education Symposium.
`
`Research Assistant (Ph. D), Ham Group, Harvard University, 2004 – 2006.
`Doctoral research in Ultrafast electronics, nonlinear wave and soliton based electronics and
`nanowire based circuits. Developed the first electrical soliton modelocked oscillator and also the
`first chip-scale modelocked oscillator in any field. Through collaboration with the Lieber group,
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`Case 6:22-cv-01162-ADA Document 74-7 Filed 11/22/23 Page 8 of 26
`David S. Ricketts
`helped to develop the fastest integrated nanowire circuit to date. Other projects included phase
`noise analysis and stochastic resonance.
`Staff Research Assistant, Harvard University, 2003 – 2004.
`Supported research efforts in high-speed electronics.
`
`
`Advanced System Engineering Manager, ON Semiconductor, 2002-2003.
`Directed a highly skilled team of system engineers to develop next generation technology for
`multi-phase power management ICs for Intel and AMD microprocessors. Initiated 10 new
`products in first 12 months and generated eight new patent/IP disclosures in first 6 months.
`Responsible for the development of new IP for the product line and the investigation of emerging
`technologies for acquisition.
`Manager of New Product Development, ON Semiconductor, 2000-2002.
`Responsible for 6 product development teams consisting of technical members across design,
`test, application engineering and layout. Oversaw the development of over 20 power
`management ICs in bipolar, CMOS and BiCMOS technologies. Responsible for ensuring
`technical excellence in design and system engineering as well as mentoring engineering staff.
`Principal Consultant, Renaissance Design, Inc. 1999-2001.
`Provided design and system engineering services for the power management semiconductor
`industry. Led the system architecture and transistor level design of a custom 2-stage dc-ac
`inverter. Used Verliog to develop an all-digital controller which enhanced controller
`functionality and robustness. Designed system supervisory circuitry and peripherals, including a
`5V LDO, ac line sense, current sense and protection, etc.
`IC Technology Unit Manager/Staff IC Designer, APC, 1995-1999.
`Responsible for the development of custom power management ICs for uninterruptible power
`supplies (UPS). Developed a custom controller for push-pull dc-ac inverters, an 8-bit A/D
`supervisory IC for sine wave inverters, and a next generation sine-wave inverter controller.
`Designs utilized bipolar, CMOS and BiCMOS technologies.
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`Case 6:22-cv-01162-ADA Document 74-7 Filed 11/22/23 Page 9 of 26
`David S. Ricketts
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`5. Consulting
`Nuvotronics, Durham, NC 2015- 2019
`
`RF Circuits & Systems
`bMuse, New York, New York, 2015-16
`
`Magnetoquasistatic Positioning
`General Motors, Herzlia, Israel 2012-2015
`Wireless Power.
`
`Cadence Corporation, Porto Alegre, Brazil, August 2008-July 2009
`Co-taught RF design course as part of technology infrastructure initiative by Brazilian government.
`ALTRAN Corporation, Paris, France, May 2006, May 2007
`Lecturer for “Innovation in Science and Engineering”, course offered to consortium of top
`engineering schools in Paris vicinity (Ecole Polytechnique, SUPELEC, etc.).
`Sparktronics, Inc., Torrence, CA, 2008
`System design and modeling for Soliton/NLTL based EMP system development.
`SigmaTel Corp, Burlington MA, 2005
`Consulting on the development of high power audio driver IC.
`Apogee Technologies, Norwood MA, 2004
`Consulting on IC controller for DC-DC power conversion.
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`Case 6:22-cv-01162-ADA Document 74-7 Filed 11/22/23 Page 10 of 26
`David S. Ricketts
`6. Teaching and Education
`U- undergraduate, G – graduate
`North Carolina State University (2013- )
`ECE714
`Advanced Analog IC Design
`ECE424/524
`Radio System Design
`ECE734
`Power Management IC
`
`Harvard University (F2012, 2006+ )
`Taught (F12) and Co-Taught (2006+) course on innovation for scientists
`ES139/239 Innovation in Science and Engineering (U/G)
`
`Massachusetts Institute of Technology (S2013 )
`6.775 Design of Analog MOS Circuits (Co-Taught with H.S. Lee)
`
`Carnegie Mellon University (2006- )
`18-623 Analog Circuit Design (G)
`18-310 Fund Devices Physics (U)
`18-610 Modern CMOS Devices (G)
`18-513 RF Circuits and Antennas for Wireless Systems (U - capstone)
`18-605
`Innovation in Science and Engineering: Theory (G - interdisciplinary)
`18-606
`Innovation in Science and Engineering: Application (G - interdisciplinary)
`
`Educational Contributions
`Applied Physics
` Curriculum development of AP undergraduate and graduate courses with AP faculty.
`Introduced new graduate device physics course, 18-610, Modern Device Physics
`
` Redeveloped 18-310, Fundamentals of Semiconductor Devices, including development
`of 5 virtual labs for web deployment
` Development of discovery based learning tools in conjunction with J. Bain and Eberly
`center via Wimmer Fellow, “IEMFE: Intuitive Electromagnetic Fields Education”
`E&M and Circuits
` Curriculum development for undergraduate courses with circuits faculty, including
`proposal for reorganizing 300
`level circuits courses
`into 18-320 (introductory
`analog/digital), 18-422 (advanced digital) and 18-423 (advanced analog).
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`Case 6:22-cv-01162-ADA Document 74-7 Filed 11/22/23 Page 11 of 26
`David S. Ricketts
` Collaborated with D. Stancil to re-design 18-513 into an interdisciplinary, wireless
`course: Wireless System Design, to include RF circuit content, enabling an analog
`circuit’s capstone while broadening the AP antennas capstone.
`• ECE 592 Analog-to-digital Converters: (NCSU) Fall 2013
`Developing new course for ADCs as part of ECS circuit’s curriculum. Developed 4
`Verilog A labs for course. Developed ADC design project for course
`• ECE 492(592) Radio Systems Design: (NCSU) Spring 2014
`Developing new experiential undergraduate course in radio system design. Included final
`2.4 GHz QAM design project. Developed 8 experimental labs
`• ECE 792 Advanced Analog IC Design (ADCs): (NCSU) Fall 2015
`Developing new course for advanced analog IC design. Adds synergistic course to
`ECE511 and complements ECE712
`
`Interdisciplinary
` Developed a new interdisciplinary/interdepartmental course between ECE and EPP: 18-
`605/6 & 19-685/6: Innovation in Science and Technology, which explores the role of
`scientists and engineers in developing technological innovations. These courses focus on
`the development of technical solutions to a variety of scientific/engineering problems.
`Outreach
` Collaboration with Disney Animal Kingdom
` Developed nest positioning systems for conservation monitoring of sea turtles on
`Florida beaches
` Developed dolphin identification and location instrumentation for monitoring dolphin
`activity
` Participated in Carnegie Science Museum Engineers Week symposium, demonstrating
`engineering and science concepts to children ages 3-18.
`International outreach:
` Taught courses in innovation and discovery in science in France (2005-2008)
` Taught RF electronics in Brazil as part of a governmental program to develop
`engineering talent and infrastructure in Brazil.
`
`
`Analog to Digital Converter Executive Education, Analog Devices, 2023.
`
`
` ADC course based on my university course taught to Analog Devices engineering
`students..
`
`
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`NSCAD - Instituto de Informática – UFRGS/ Cadence Design Systems, Porto Alegre, Brazil (July-
`August 2008)
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`Case 6:22-cv-01162-ADA Document 74-7 Filed 11/22/23 Page 12 of 26
`David S. Ricketts
` BA03 RF IC Design – Full time intense course (40 hrs/week) as part of Brazilian
`government initiative to increase high-tech infrastructure in Brazil.
`Lecturer (2002-2006)
` Teaching Fellow, ES139 Innovation in Science and Engineering , (G, U), Harvard
`University, 2004 & 2005
` Guest Lecturer, ES 272 RF and High Speed Circuits, (G), Harvard University, 2005
`Invited Lecturer, Innovation in Science & Technology (G, U), Paris University
`
`Consortium, Paris, France, 2005
` Guest Lecturer, EE2799 Electrical and Computer Engineering Design, (G) Worcester
`Polytechnic Institute (WPI), 2002
` Guest Lecturer, ELE535 BiCMOS Integrated Circuit Design, (G), University of Rhode
`Island, 2002.
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`Case 6:22-cv-01162-ADA Document 74-7 Filed 11/22/23 Page 13 of 26
`David S. Ricketts
`7. Research Supervision
`
`GRADUATE STUDENT SUPERVISION NCSU
`1. Prya Darshni (PhD Canddiate, 2026)
`2. Hongtao Zhong (PhD Candidate, 2025)
`3. Shian Su (PhD Candidate, 2025)
`4. Joe Zhou (PhD Candiate 2023)
`5. Karan Maru F20-S21 RA
`6. Sriraj Kandala, Summer 2020 RA
`7. Bhaumik Jain Summer-Fall 2020 RA
`8. Matt Dwyer Summer-Fall 2020. RA
`9. William Harris (PhD candidate, 2019)
`10. Junyu Shen (PhD candidate, 2019)
`11. Hangjin Liu (PhD Candidate, 2021)
`12. You Zhou (PhD Candidate, 2021)
`13. Deeksha Lal (PhD 2018)
`14. Samyak Parakh (MS, 2018)
`15. Rafael de Silva (PhD candidate, 2020)
`16. Michael Aiken ( MS 2017, PhD Candidate)
`17. Viswanath Ramesh (Initial PhD work 2015-2016)
`
`
`GRADUATE STUDENT SUPERVISION CMU
`1. Emre Karagozler, PhD 2013
`2. Wei Tai, PhD 2012
`3. Darmin Arumugam, PhD 2012
`4. Weihua Hu, PhD 2012
`5. Chongzhe Li, MS 2012
`6. Zacherias George, MS 2012
`7. En Shi, MS 2010
`8. Qianyu Liu, MS 2009
`
`
`GRADUATE COMMITTEES
`1. Yongduk Oh (PhD Candidate 2023)
`2. Jaewoo Kim (MS 2021)
`3. Sarah Colebaugh
`4. Weifu Li (PhD Candidate 2019)
`5. Kirti Bhanushali (PhD candidate 2018)
`6. Weihu Wang (PhD candidate 2018)
`7. Yunjia Zhu (MS candidate Textiles 2017)
`8. Junan Zhu (PhD candidate 2016)
`9. Yunjia Zhu (MS candidate 2016)
`10. Anirban Sarkar, (PhD candidate 2016)
`11. Sandeep Hari, (PhD candidate 2018)
`12. Kevin Green (PhD candidate 2016)
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`Case 6:22-cv-01162-ADA Document 74-7 Filed 11/22/23 Page 14 of 26
`David S. Ricketts
`13. Ying Yi Tang, PhD 2015 (CMU)
`14. Mohammad Noman, PhD 2013 (CMU)
`15. Erkan Alpman, PhD 2007 (CMU)
`
`
`UNDERGRADUATE STUDENT SUPERVISION
`
`1. Maya Clinton F22-S23 (MechE)
`2. Cole Contos F22
`3. Jason Abell F22-S23
`4. Landon Calton F22
`5. Frank di Lustro S21
`6. Alan Davila Summer 2020
`7. Casey Crouse Spring 2020-Summer 2020
`8. Jacob Abramow Spring 2020
`9. Jeremy Peterson Sprinf 2020-Summer 2020
`10. Laura Walker Spring 2020
`11. Ryan Hardy REU Spring 2020-Spring 2021
`12. Matt Dywer Connor Walker REU Fall/Spring 2019
`13. Matt Dwyer REU 2019 Summer.
`14. Casey Crouse REU 2019 Summer.
`15. Zack Miller, Felix Chamielec, Danny Krafft, Grason Humphrey, Sufian Ahmad (NCSU UG Senior
`Design: Qi Charger, 2019)
`16. Matt Dwyer, S19 (NCSU, Undergrad Research)
`17. Shakti Reddy, F18/S19 (NCSU, Undergrad Research)
`18. Shane Reagan, Zach Cline, Daniel Robson, Andrew Cragg, (NCSU UG Senior Design: Pringles
`Radar 2017/18)
`19. Christian Burke, F17/S18 (NCSU, Undergrad Research)
`20. Bill Zhou (BSEE) Fall 2016 (NCSU, Undergrad Research)
`21. Akshay Iyer, Stephen Kerr, William Stepp, Kirk Weston, (NCSU UG Senior Design: Magnetic
`Sports Tracking, 2015/16)
`22. Shaunak Turaga (BSEE), Fall/Spring 2014/15 (NCSU, Undergrad Research)
`23. Mathew Briley (BSEE), Fall/Spring 2014/15 (NCSU, Undergrad Research)
`24. Adeola Salu (BS), Spring 2013 (Harvard, Independent Study )
`25. Zackary Hamad (BS), Spring 2011 (Harvard, independent Study)
`26. Andrew Hillenius (BS), Summer/Fall, 2011 (CMU, Independent Study)
`27. Chongzhe Li (BS), Spring 2010 (CMU, Independent Study)
`28. Christopher Heidelberger (BS), Summer 2009, (CMU) NSF REU
`29. Yue Lu (BS), Summer 2007 (CMU Independent Study)
`
`
`SPECIAL STUDENT ADVISING
`
`1. Karan Maru, S20 (NCSU MSEE Research)
`2. Bhaumik Jain, F19 (NCSU, MSEE Research)
`3. Sriraj Kandala, F19 (NCSU, MSEE Research)
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`Case 6:22-cv-01162-ADA Document 74-7 Filed 11/22/23 Page 15 of 26
`David S. Ricketts
`4. Sandesh Shanmukha, S19 (NCSU, MSEE Research)
`5. Shubhankar Patwardham F17/S18/F18 (NCSU, Ind. Study)
`6. Amrutha Anantha S18 (NCSU, Ind. Study)
`7. David Philpott S2017 (NCSU, Ind. Study)
`8. Shenoy Akshat S2017 (NCSU, Ind. Study)
`9. Sayan Das Fall 2016 (NCSU, Ind. Study)
`10. Rounak Lokare Spring 2016 (NCSU, Ind. Study)
`11. Swaroop Mohapatra Spring 2016 (NCSU, Ind. Study)
`12. Ganapati Pai Spring 2016 (NCSU, Ind. Study)
`13. Mahmoud Metwally 2015 (NCSU, MS research)
`14. Ashwin Thyagarajan Spring 2015 (NCSU Ind. Study)
`15. Reza Chavoshisani 2015 (PhD – 1 year visiting scholar)
`16. Abhishek Malhotra (MS), Spring/Summer, 2013 (NCSU, Independent Study)
`17. Syed Saad (MS), Summer 2011 (CMU, Independent Study)
`18. Brian Lee (MS), Summer 2011 (CMU, Independent Study)
`19. Ashwath Krishnan (MS), Summer 2010 (CMU, Independent Study)
`20. Akshat Gupta (MS), Fall 2009 (CMU, Independent Study)
`21. Heer Ghandi (MS), Fall 2007 (CMU, Independent Study)
`Publications
`1.1 Books
`
`
`
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`Radio System Design, D. S. Ricketts, Ingram Spark, 2015.
`Electrical Solitons: Theory, Design and Applications, D. S. Ricketts and D. Ham, CRC Press,
`2010.
`The Designers Guide to Jitter in Ring Oscillators, J. A. McNeill and D. S. Ricketts, Springer
`Verlag, 2009.
`1.2 Books Chapters/Sections
`
`D. S. Ricketts, Xiaofeng Li, and Donhee Ham, "Soliton Electronics," in Circuits for Emerging
`Technologies - CMOS and beyond, CRC Press 2008.
`X. Li, D. S. Ricketts, and D. Ham, "Solitons in electrical networks," McGraw-Hill 2008
`Yearbook of Science and Technology, McGraw-Hill, 2008.
`
`1.3
`
`Journal Articles (51 papers)
`
`1. W. C. Harris and D. S. Ricketts, “Maximum Gain Enhancement n Wireless Power Transfer using Anisotropic
`Metamaterials,” Scientific Reports, 2023.
`2. J. Shen and D. S. Ricketts, "Compact W-Band “Swan Neck” Turnstile Junction Orthomode Transducer Implemented by
`3-D Printing," in IEEE Transactions on Microwave Theory and Techniques, vol. 68, no. 8, pp. 3408-3417, Aug. 2020
`3. M. Dwyer and D. S. Ricketts, “The North Carolina state university rabbit radar: Build a frequency-modulated
`continuous-wave radar in a day [application notes],” IEEE Microwave Magazine, vol. 21, no. 5, pp. 136–145,
`2020..[Invited]
`4. D. S. Ricketts, “A modern 16-qam digital radio you can design and build at home [application notes],” IEEE Microwave
`Magazine, vol. 21, no. 7,pp. 10–22, 2020.
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`Case 6:22-cv-01162-ADA Document 74-7 Filed 11/22/23 Page 16 of 26
`David S. Ricketts
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`5. W. C. Harris, D. D. Stancil, and David S. Ricketts, “Improved wireless power transfer efficiency with non-perfect
`lenses,” Applied Physics Letters 114:14, April 2019.
`6. D. S. Ricketts, E. Shi, X. Li, N. Sun, O. O. Yildirim and D. Ham, "Electrical Solitons for Microwave Systems:
`Harmonizing Nonlinearity and Dispersion with Nonlinear Transmission Line," in IEEE Microwave Magazine, vol. 20,
`no. 4, pp. 123-134, April 2019 [Invited].
`7. J. Shen and D. S. Ricketts, "Additive Manufacturing of Complex Millimeter-Wave Waveguides Structures Using Digital
`Light Processing," in IEEE Transactions on Microwave Theory and Techniques, vol. 67, no. 3, pp. 883-895, March
`2019.
`8. D. S. Ricketts, J. Shen, J. Dunn, “Expanding the Antenna Frontier With Antenna Synthesis and 3D Printing”, (Cover
`article), Microwave Engineering Europe, Sept. 2018.
`9. D. Lal, A. M. A. Ali and D. S. Ricketts, "Analysis and Comparison of High-Resolution GS/s Samplers in Advanced
`BiCMOS and CMOS," in IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 65, no. 5, pp. 532-536,
`May 2018.
`10. J. Besnoff, M. Abbasi and D. S. Ricketts, "Ultrahigh-Data-Rate Communication and Efficient Wireless Power Transfer
`at 13.56 MHz," in IEEE Antennas and Wireless Propagation Letters, vol. 16, pp. 2634-2637, 2017.
`11. M. Abbasi, B. Wang, S. Tamaru, H. Kubota, A. Fukushima and D. S. Ricketts, "Accurate De-Embedding and
`Measurement of Spin-Torque Oscillators," in IEEE Transactions on Magnetics, vol. 53, no. 11, pp. 1-4, Nov. 2017.
`12. V. Pasku et al., "Magnetic Field-Based Positioning Systems," in IEEE Communications Surveys & Tutorials, vol. 19,
`no. 3, pp. 2003-2017, thirdquarter 2017.
`13. W. Tai, M. Abbasi and D. S. Ricketts, “Analysis and design of high-power and efficient, millimeter-wave power
`amplifier systems using zero degree combiners,” IET J. of Electronics, pp. 1-11, Jul. 2017.
`14. M. Chabalko, J. Besnoff, M. Laifenfeld and D. S. Ricketts, "Resonantly Coupled Wireless Power Transfer for Non-
`Stationary Loads With Application in Automotive Environments," in IEEE Transactions on Industrial Electronics, vol.
`64, no. 1, pp. 91-103, Jan. 2017.
`15. Abbasi M, Ricketts DS. A high-power, broadband 245-285 GHz balanced frequency doubler in 45 nm SOI CMOS
`Microwave and Optical Technology Letters. 58: 423-426, 2016.
`16. M. E. Karagozler, S. C. Goldstein and D. S. Ricketts, "Scalable self-assembly process for the fabrication of sub-
`millimetre three-dimensional cylindrical tubes," in IET Micro & Nano Letters, vol. 11, no. 1, pp. 4-8, 1 2016.
`17. M.Abbasi, D.S.Ricketts, “A 275 GHz-285 GHz Balanced Frequency Quadrupler in 45nm SOI CMOS,” Electronic
`Letters, vol.51, no.18, pp.1424-1426, Sept 2015.
`18. J. Besnoff, M. Abbasi and D. S. Ricketts, "High Data-Rate Communication in Near-Field RFID and Wireless Power
`Using Higher Order Modulation," in IEEE Transactions on Microwave Theory and Techniques, vol. 64, no. 2, pp. 401-
`413, Feb. 2016.
`19. J. Besnoff, M. Chabalko and D. S. Ricketts, "A Frequency-Selective Zero-Permeability Metamaterial Shield for
`Reduction of Near-Field Electromagnetic Energy," in IEEE Antennas and Wireless Propagation Letters, vol. 15, pp. 654-
`657, 2016.
`20. M. J. Chabalko, J. Besnoff and D. S. Ricketts, "Magnetic Field Enhancement in Wireless Power With Metamaterials and
`Magnetic Resonant Couplers," in IEEE Antennas and Wireless Propagation Letters, vol. 15, pp. 452-455, 2016.
`21. M. Chabalko and D. S. Ricketts, “Experimental characterization of Fabry-Perot resonances of magnetostatic volume
`waves in near-field metamaterials”, Applied Physics Letters, 106, 062401 (2015).
`22. Ozcan, O.; Weihua Hu; Sitti, M.; Bain, J.; Ricketts, D.S., "Investigation of tip current and normal force measured
`simultaneously during local oxidation of titanium using dual-mode scanning probe microscopy," Micro & Nano Letters,
`IET , vol.9, no.5, pp.332,336, May 2014
`23. Ricketts, D.S.; Chabalko, M.; Hillenius, A., "Tri-Loop Impedance and Frequency Matching With High- Q Resonators in
`Wireless Power Transfer,"Antennas and Wireless Propagation Letters, IEEE , vol.13, no., pp.341,344, Jan. 2014.
`24. D. Arumugam, J. Griffin, D. Stancil and D. S. Ricketts, “Three-Dimensional Position and Orientation Measurements
`using Magnetoquasistatic Fields and Complex Image Theory,” Antennas and Propagation Magazine, IEEE, vol.56, no.1,
`pp.160,173, Feb. 2014
`25. Williams, D.F.; Corson, P.; Sharma, J.; Krishnaswamy, H.; Tai, W.; George, Z.; Ricketts, D.S.; Watson, P.M.; Dacquay,
`E.; Voinigescu, S.P., "Calibrations for Millimeter-Wave Silicon Transistor Characterization," Microwave Theory and
`Techniques, IEEE Transactions on , vol.62, no.3, pp.658,668, Mar. 2014.
`26. Tai, W.; Ricketts, D.S., "A compact, 36 to 72 GHz 15.8 dBm power amplifier with 66.7% fractional bandwidth in 45 nm
`SOI CMOS," Microw. And Opt. Tech Lett. ,vol. 56, pp.1098-2760, Nov. 2013.
`27. J. Xu and D. S. Ricketts, "An Efficient, Watt-Level Microwave Rectifier Using an Impedance Compression Network
`(ICN) With Applications in Outphasing Energy Recovery Systems," Microwave and Wireless Components Letters, IEEE
`, vol.23, no.10, pp.542,544, Oct. 2013.
`
`

`

`Case 6:22-cv-01162-ADA Document 74-7 Filed 11/22/23 Page 17 of 26
`David S. Ricketts
`
`28. Arumugam, D.D.; Ricketts, D.S., "Passive orientation measurement using magnetoquasistatic fields and coupled
`magnetic resonances," Electronics Letters , vol.49, no.16, pp.999,1001, Aug. 2013.
`29. Williams, D.F.; Corson, P.; Sharma, J.; Krishnaswamy, H.; Wei Tai; George, Z.; Ricketts, D.; Watson, P.; Dacquay, E.;
`Voinigescu, S.P., "Calibration-Kit Design for Millimeter-Wave Silicon Integrated Circuits," Microwave Theory and
`Techniques, IEEE Transactions on , vol.61, no.7, pp.2685,2694, July 2013.
`30. Tai, W.; Ricketts, D.S., "74 GHz, 17.2 dBm power amplifier in 45 nm SOI CMOS," Electronics Letters
`,vol.49,no.12,pp.758,759, June 2013.
`31. S. Tamaru and D. S. Ricketts, “Measurement of ultra-low power oscillators using adaptive drift cancellation with
`applications to nano-magnetic spin torque oscillators,” Rev. of Scien. Instr., vol. 84, p. 054704-7, May 2013.
`32. Arumugam, D.D.; Ricketts, D.S., "Passive Magnetoquasistatic Position Measurement Using Coupled Magnetic
`Resonances," Antennas and Wireless Propagation Letters, IEEE , vol.12, no., pp.539,542, Apr. 2013
`33. Arumugam, D.D.; Griffin, J.D.; Stancil, D.D.; Ricketts, D.S., "Magneto-Quasistatic Tracking of an American Football:
`A Goal-Line Measurement," Antennas and Propagation Magazine, IEEE , vol.55, no.1, pp.138,146, Feb. 2013.
`34. D. S. Ricketts, M. Chabalko and A. Hillenius, “Experimental demonstration of the equivalence of inductive and strongly
`coupled magnetic resonance wireless power transfer,” Applied Physics Letters, vol. 102, no. 5, Feb. 2013.
`35. C. Li and D. S. Ricketts, “Loss minimization in λ/4 impedance transformers using multiple λ/4 segments,” Electronic
`Letters, vol.49, no.4, pp.274,276, Feb. 14 2013
`36. W. Hu, J. Bain and D. S. Ricketts, “An AFM/STM multi-mode nanofabrication approach allowing in situ surface
`modification and characterization,” Micro and Nano Letters, Vol. 8, p. 43-46, Jan 2013.
`37. Arumugam, J. Griffin, D. Stancil and D. S. Ricketts, “Error Reduction in Magnetoquasistatic Positioning Using
`Orthogonal Emitter Measurements,” Antennas and Wireless Propagation Letters, IEEE, vol.11, no., pp.1462,1465, 2012
`38. R. Birt, K. An, M. Tsoi, S. Tamaru, D. Ricketts, K. L. Wong, P. K. Amiri, K. L. Wang, and X. Li, “Deviation from
`exponential decay for spin waves excited with a coplanar waveguide antenna,” Applied Physics Letters., vol. 101, no. 25,
`2012.
`39. S. Tamaru and D. S. Ricketts, “Experimental Study of the Variation in Oscillation Characteristics of Point-Contact-
`Based Spin-Torque Oscillators.” IEEE Trans. on Magnetics, vol.3, no., pp.3000504, 2012
`40. M. E. Korogozlar, S. Goldstein and D. S. Ricketts, “Analysis and modeling of capacitive power transfer in
`microsystems,” Circuits and Systems I: Regular Papers, IEEE Transactions on , vol.59, no.7, pp.1557,1566, July 2012
`41. W. Hu, J. A. Bain and D. S. Ricketts “In-Situ quantification of electrical isolation in STM-fabricated TiOx
`nanostructures,” Micro and Nano Letters, vol. 7, no. 4, pp. 334-36, Apr. 2012.
`42. S. Tamaru, J. A. Bain, M. H. Kryder and D. S. Ricketts, “Theory for calculating the Green’s function of magnetostatic
`surface waves and its application to the study of spatial diffraction patterns,” Physical Rev. B¸ 84, pp.064437 (2011).
`43. D.S. Ricketts, J. A. Bain, Y. Luo, S. Blanton, K. Mai and G. K. Fedder, “Enhancing CMOS using nanoelectronic
`devices, a perspective on hybrid integrated systems,” Proc. of the IEEE vol.98, no.12, pp.2061,2075, Dec. 2010.
`44. R. Evarts, L. Cao, D. S. Ricketts, N. D. Rizzo, J. A. Bain, and S. A. Majetich, “Characterization of conducting atomic
`force micrsocopy for use with magnetic tunnel junctions,” IEEE Trans. on Magnetics, vol.46, no.6, pp.1741,1744, June
`2010
`45. E.R. Evarts, L. Cao, D. S. Ricketts, N. D. Rizzo, J. A. Bain, and S. A. Majetich, “Spin transfer torque switching of
`magnetic tunnel junctions using a conductive atomic force microscope,” Applied Physics Letters 95, 132510 (2009).
`46. O. O. Yildirim, D. S. Ricketts, and D. Ham, "Reflection soliton oscillator," IEEE Transactions on Microwave Theory
`and Technique , vol. 57, no. 10, pp. 2344-2353, Oct. 20