About Dr. Eisenhart

About Dr. Eisenhart
HFSS Circuit Designs
HFSS Presentations
HFSS Clients
CAD Facilities

Work Experience:

  • 1994 to present - Principal Investigator of Eisenhart and Associates, consulting in microwave antenna and circuit modeling, simulation, and design.

  • 1971 to 1994 - Hughes Aircraft Co., Radar and Missile Systems Groups, in positions from Senior Staff Engineer to Chief Scientist.  Provide technical direction and management of IR&D programs; develop innovative solutions to challenging requirements and contribute to the preparation of technical proposals; represent the organization on technical committees and provide guidance in the direction of the organization.  Lead Research and Development projects relating to microwave circuits, antennas and systems.  Work focused on design, modeling, measurement and instrumentation.  Microwave diagnostics and circuit development for High Power Microwave systems; working in applications of Electronically Scanned Arrays.  Developed procedure for use of commercial Finite Element Modeling software for scanning of antenna arrays.

  • 1965 to 1971 - University of Michigan, Cooley Electronics Laboratory, as an Assistant Research Engineer, engaged in the theoretical and experimental analysis of parametric amplifier circuits while pursuing graduate degrees.

  • 1962 to 1965 - Civil Service with the US Army Security Agency, Frankfurt, Germany as a Staff Engineer in the European Headquarters.  Involved in the planning, installation, and maintenance of classified electronics in the field sites.

  • 1960 to 1962 - Military Project Officer with the Research and Development Division, US Army Security Agency, Arlington, Virginia.  Monitored the development of electronics equipment (ECM, ELINT, etc.).


  • 1970  Ph.D.- Elect. Eng. - University of Michigan, Ann Arbor, Michigan;
  • Thesis - "Impedance Characterization of a Waveguide Microwave Circuit"-
  • 1966  MSEE - University of Michigan
  • 1960  BSEE - Rensselaer Polytechnic Institute, Troy, New York

Professional Organizations:

  • Microwave Theory and Techniques Society, IEEE  (MTT-S)
  • Antennas and Propagation Society, IEEE  (AP-S)


  • Life Fellow of the IEEE (2005)
  • Recipient of the IEEE Third Millennium Medal (2000)
  • Microwave Pioneer Award of the Microwave Theory and Techniques Society (1999)
  • Fellow of The Institute of Electrical and Electronics Engineers (1995): “For contributions to the modeling, design, and measurement of microwave circuits and antennas.”
  • Honoraries – Sigma Xi, Tau Beta Pi, Eta Kappa Nu
  • Group Patent Awards, Hughes Missile Systems (1986 and 1990)
  • Superior IR&D Awards for Project Management, Hughes Missile Systems
    (1981, 1982, 1983, 1984, and 1985)
  • Letter of Commendation from the Asst. Secretary of Defense for efforts in the European Theater (1965)
  • Distinguished Military Graduate (ROTC) at Rensselaer Polytechnic Institute

Expert Litigation Experience:

  • Successfully supported clients in patent infringement litigation as an expert witness preparing reports and testimony

Professional society contributions:

  • General Chairman of the 1999 International Microwave Symposium (IMS)
  • Chairman of Technical Program, 1994 IMS
  • Chairman of Special Exhibits, 1989 IMS
  • Member of Registration Committee, 1987 IMS
  • Guest Editor of MTT-S Transactions, December 1981 (Symposium Issue)
  • Member of Technical Program Committee, MTT-S Symposia 1987-1994
  • Member of MTT-S Transactions Editorial Review Board, 1971 to 2000


  • Over 40 in various Transactions, Technical Periodicals and Conference Digests
  • Chapt.10 of “Finite Element Software for Microwave Engineering”, ‘96 Wiley
  • Thirteen patents covering a variety of areas

Teaching and Training:

  • Instructor of HFSS for Ansoft in a sponsored microwave design course
  • Instructor of HFSS for Agilent Technologies in company sponsored courses
  • Instructor, Microwave Theory Course at Loyola University in Los Angeles
  • Guest Lecturer at University of Michigan
  • Guest Lecturer at University of California at Los Angeles (UCLA)
  • Guest Lecturer at University of California at San Diego (UCSD)
  • Guest Lecturer at California Institute of Technology
  • Guest Lecturer at University of Colorado
  • Guest Lecturer at University of Monteral
  • Guest Lecturer at University of Southern California
  • Directed Research on five Masters Theses at UCLA
  • One at Calif. State. University Northridge

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