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 Expert  108335

Expert in Antenna/Microwave Design, Log-periodic Antennas, Electronic Scan Radar Antennas

Available for your Consulting and Expert Witness Needs

New York (NY)
Education Work History Career AccomplishmentsPublicationsConsulting Services Expert Witness

Summary of Expertise: Listed with other top experts in: 
With over 40 years of experience in antenna and microwave design, Expert has performed numerous diagnostic near-field antenna pattern measurements. By means of an FFT or matrix-inversion algorithm, he has ascertained the aperture phase and amplitude coefficients. Armed with this knowledge, Expert can then discover the causes of pattern degradation. In addition, he has performed many studies of malfunctioning antennas to pinpoint problem areas, such as mutual coupling, surface waves, electrical conductivity, structural scattering, and radome reflections and refractions. Expert applied these techniques to production debugging of the Joint-STARS phased array and the SPS-67 slotted array antenna.Expert patented an in-flight diagnostic (and calibration) technique using signal injection to each radiator together with the FFT or matrix-inversion algorithm, which allows the restoration of low-sidelobe antenna patterns without system shut-down. This technique has been presented at the 20th European Microwave Conference and the 1985 Symposium on Phased Arrays.



antenna design


antenna diagnostics


beam antenna


echo area


feed antenna


frequency-scanned antenna


slot antenna

Expert developed a host of computer programs for either principle plane or hemispherical antenna pattern generation and antenna gain calculation with both tabular and graphic data outputs. These programs can be applied to planar as well as non-planar arrays of equally- and unequally-spaced radiators and with equal- as well as unequal-polarizations. Any arbitrary radiator voltage magnitude and phase may be applied to these programs. In addition, random phase or amplitude tolerance errors may be injected.

antenna analysis

Expert has designed, built, tested, and analyzed numerous array antennas, using slot, dipole, spiral, or end-fire radiators of the Yagi variety. He has extensive experience with the Joint-STARS phased array, the APG-76 slotted array, and the SPS-67 traveling wave array. He is familiar with the switchable array of end-fire radiators for the Apollo spacecraft TV antenna, the frequency surveillance interlaced antenna array for Patrick AFB, and the frequency scanned slotted arrays for missile nose cones as well as developmental mortar locators.

multiple-beam antenna array

As the technical design leader, Expert directed a team of 22 engineers on the development of the Joint-STARS phased array antenna system. He holds patents on the ultra-low sidelobe asymmetric ridge wave slotted array aperture, the dualmode feed for switching between two aperture illuminations, and the in-flight diagnostic and phase alignment technique. He had responsibility for rotary joint, corporate feeds, ferrite phase shifters, mechanical configuration, tolerance control, beam-steering algorithm, L.O. distribution system, low-noise dual down-converter assembly, and IF switching. He performed detailed microwave and antenna design as well as supervision of all major microwave component and sub-assembly sub-contractors.

He was also the technical design leader for the mortar locator phased-array antenna, which incorporated frequency as well as ferrite phase shifter scanning. He designed and developed the ferrite phase shifter, corporate feed, and slotted array frequency-scanning aperture.


phased-array radar

Expert designed, built, tested, and analyzed numerous antennas. For example, he can answer questions related to feed and reflectors, horns, slotted arrays, dielectric lens, end-fire radiators, log-periodic dipole arrays, low-profile monopole arrays, covert antennas, frequency-scanned arrays, and ferrite steered, self-calibrating, phased arrays (for radar communications) and ECM applications (for ground-based, air-borne and missile installations). He generated a computer program library for rapid antenna design, analysis, and debugging.

microwave antenna

Expert designed A-sandwich, C-sandwich, many-layer radomes, and multi-layer radar windows for ground-based, airborne, and missile-borne radars and ECM systems for both narrow-band and multi-octave applications. Examples include the Joint-STARS, Standard-ARM, and AN/USQ-60 Polarimeter systems. He performed design optimizations over wide ranges of incidence angles, frequencies, and polarizations. He is familiar with the effects of rain erosion and heating during super-sonic flight. He has examined sled-test results. Expert has performed computer modeling of radomes with many layers of diverse dielectric constants and loss tangents, which included the effects of honeycomb and adhesive layers. He has experimented with Brewster angle-assisted end-fire designs and with the integration of beam shaping lenses.


Show Secondary and Basic Areas of Expertise
Expert may consult nationally and internationally, and is also local to the following cities: New York, New York;  Yonkers, New York;  Newark, New Jersey;  Jersey City, New Jersey;  Paterson, New Jersey;  Elizabeth, New Jersey;  Bridgeport, Connecticut;  New Haven, Connecticut;  Hartford, Connecticut;  and Philadelphia, Pennsylvania.

Often requested
with this expert:

Microwaves, Antennas, Radio Frequency Systems and Devices
Microwaves, Wireless, Spectrum Management, Antennas,...
EMC/ EMI, RF/ Microwave, Hardware, Firmware, Product...
Radio Engineering, Satellite, Microwave

Year   Degree   Subject   Institution   Honors
1951   MS   Electrical Engineering   Yale University  
1950   BS   Electrical Engineering   Union College   Top Ranking Graduate

Work History:
Years   Employer   Department   Title   Responsibilities

1996 to 1999


Northrup Grumman


Farmingdale , NY


Independent Consultant


Frequency and ferrite phase shifter steered Radar Antenna design and analysis.

1974 to 1996


Northrop Grumman Norden Systems (formerly a division of UTC)


Norwalk , CT


Manager and Chief Scientist for Antennas


Project Manager of Joint-STARS Phased array antenna.

1964 to 1974


Maxson Electronics


Antenna and Microwave


Department Manager


Antenna design and testing. Project Manager of Polarimeter ECM Search Anetenna System.

1961 to 1964





Engineering Manager


Directed 50 engineers in producing Broad-band Frequency Surveillance Direction Finding Antenna.

Apollo spaceship data transmitting travelling wave antenna

1954 to 1961


Maxson Electronics



Senior Microwave & Antenna Engineer


Miscellaneous antenna design, analysis, and testing.

Career Accomplishments:

Expert is a life member of IEEE.

Publications and Patents Summary

Expert is a holder of five U.S. patents in antenna technology. He designed the E-scanned antenna for the Joint-STARS radar page in the Encyclopedia of Electronics and developed and produced the AN/USQ-60 polarimeter system.

Selected Publications and Publishers  
 - Antenna Applications Symposium  
 - European Microwave Conference  
 - Annual Tri-Service Radar Symposium  

Consulting Services:
Recent Client Requests:
  • Expert in Antenna Design Engineer for consulting on Complex Antenna Design.
  • Expert for consulting on UHF RFID Antenna design.
  • "Multiple beam antenna" expert for consulting on Need to hire written technical feasibility opinion on proposed MBA-satellite.
  • Antenna design expert for consulting on UMB/ MIR antenna design.
  • Microwave transmission power transfer expert for consulting on microwave antenna design and efficiencies.
  • Radio technology expert for consulting on AM FM radio transmission.
Click the green button above to contact Expert for a free initial screening call regarding your expert consulting needs.  Expert is available for consulting to corporate, legal and government clients.  Remember, your initial screening call to speak with Expert is free.

Expert Witness:
Recent Litigation Client Requests:
  • Expert in antenna design needed for a trade secret case.
  • Antenna expert for consulting on phase shifters for cellular antennas.
Click the green button above to contact Expert for a free initial screening call regarding expert testimony, litigation consulting and support, forensic services, or any related expert witness services.  A few litigation needs include product liability, personal injury, economic loss, intellectual property (patent, trademark, trade secret, copyright), and insurance matters.  Remember, your initial screening call to speak with Expert is free.

International Experience:
Years   Country / Region   Summary
1991 to 1992   Russia   Expert coordinated antenna design and worked on related proposals with AUSRIRE in Petrograd, Russia.

Language Skills:
Foreign Language  

Additional Skills and Services:
Supplier and Vendor Location and Selection

Expert has experience locating vendors of: * Slotted arrays * Microwave assemblies, feeds, and comparators * Microwave receivers * Radomes * Electronic phase shifters.


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