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Microwave/Antenna Designer and Consultant, Ph.D. in Physics
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Does your company need an antenna design, but have only a case by case need? Don’t want to buy an antenna from another company, and pay for their profits? Don’t want to pay for in-house staff? Don’t be directed toward a marginal design based on the stock or limited capabilities of another company. Get a design customized for your application, designed for low cost and performance.
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Profits and Production Reliability are always a concern. I can design it, customized to your manufacturing capabilities. After the antenna is designed, your company builds it. Or I can arrange for contract manufacturing. Effective production technologies are PCBs, Stamped Metal, Wire, Insert Molding, Plated Ceramics, and more.
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Expert at EM Simulation tools: Ansoft HFSS, Serenade. Will make analysis and presentations using Matlab and Powerpoint.
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Call and Let’s Talk.
Tel: 831-439-0994
Scotts Valley, CA
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Past designs/experience:
Flat Panel Single- and Multi-Beam Arrays,
Microstrip antennas (TM10 and higher order patches),
Dipoles and Monopoles (dual band cellular),
Embedded antennas (802.11a/b for PDAs, Computers)
Cell Phone antennas (AMPS/PCS designs, SAR predictions),
Waveguides (Polarizers, Ridged, OMTs),
Reflector Dishes and Feed Horns,
Radar Cross Section reduction, Frequency Selective Surfaces,
Interconnect Issues,
EM Bandgap structures.
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I am known to design innovative, low cost antennas for production, with 6 patent applications. I have been the in-house antenna designer directing various cell, 802.11a/b, and satellite radio antenna projects. I have worked with many creative experienced antenna designers. At Centurion we have brought products (e.g., satellite radio) from concept to production. The design approach was to select various antenna elements to attack each project, perform computer modeling (using HFSS), and have technicians build and test the ideas in the lab.
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6 Years Antenna Design Experience:
Sr RF Engineer, Centurion Wireless (Startup Division), 2001-2003
Project Engineer, Rangestar Wireless (Commercial Startup), 2000-2001
Sr. RF Engineer, Raytheon, Antenna and Radome Division, 1997-2000
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PATENTS:
Patent application: “Low radar cross section radome”, Inventors: Yueh-Chi Chang, Court Rossman. U.S. Serial No. 20030052833 (published on www.uspto.gov under patent applications.)
Patent application: “Low Profile Tri-filar, Single Feed, Helical Antenna”, Inventors: Patrick McKivergan, Court Rossman (Attorney Docket No. 38105.830009.000, at Holland and Hart)
Patent application: “Low Profile Two-Antenna Assembly Having a Ring Antenna and a Concentrically-located Monopole Antenna,” Inventors: Court Rossman, Brian St. Hilaire. Attorney File No. 38105.0039 (830010.US1), Holland and Hart.
Patent application: “Compact Antenna with Circular Polarization”, Inventors: Court Rossman. US Serial #: 10290970
Patent application: “Collinear Coaxial Slot-Fed-Biconical Array Antenna”, Inventors: Royden Honda, Court Rossman. U.S. Serial No. 20030085845 (published on www.uspto.gov .)
Provisional Patent application: “Low radar cross section radome using frequency selective surface”, Inventor: Court Rossman.
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STRENGTHS:
· Engineering Design and Numerical Modeling: Currently design low-cost commercial antennas and have designed high-performance microwave components (single- and multi-beam arrays, feed horns, reflector dishes, stripline circuits, frequency selective surfaces, band gap structures).
· Engineering Guidance and Leadership: Directed development efforts for numerous antenna projects.
· Experimental Design: Strong background in experimental solid state physics lab. Have focused on magnetic materials, performing magnetic ac/dc susceptibility measurements, four-point resistance measurements, Nuclear Magnetic Resonance, Rutherford Backscattering, IR bolometer, and X-ray analysis. Proficient in high vacuum systems (10-7 torr), cryogenic temperature control systems, computer data acquisition, and machine tools.
· Scientific Analysis: Over 15 years background in the design, analysis and interpretation of experimental results.
· Computer Programming: Matlab, Fortran, Mathematica, and BASIC. Past experience in C. Use PC/Sun/Mac computers.
· Personal Qualities: Responsive to new challenges, enjoy interaction with a work group, strong writing skills (wrote the preliminary patents), creative, persistent. Enjoy participating and/or overseeing in the development of a new product.
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TALKS/PAPERS/GRANTS:
Accepted Talks at IEEE AP-URSI 2003 in June, “Low Profile, Single Feed, Tri-filar, Linear- or Circularly- Polarized Helix Antenna” and “Design and Radiation Characteristics of Low Profile TM21 Ring Antenna and Concentric Linear Monopole Assembly.”
Talk, "Fun with Perfect Magnetic Boundaries", Ansoft workshop in L.A., CA, 2002.
Paper and Oral/Poster, "Correlation of Frictional Losses of Spinning Levitated Magnets with AC Susceptibility in High Temperature Superconductors", Applied Physics Letters, 1996 70(2) p. 255-257; Oral and Poster, same topic, at American Physical Society, March 95 and March 96.
Paper, "Precession of Spinning Magnets Levitated over High Temperature Superconductors", Physica C 295 (1998) pp 304-329
Paper, "An assessment of synthesis effects on the high-Tc superconducting transition: with application to thin film bolometer devices", Galasso, F.S., Fenner, D.B., Lynds, L. Rossman, C.E., Potrepka, D.M., Budnick, J.I., Carreiro, L.G., Appl. Supercond., Vol 4(3), 1996, p. 119-133.
Poster at Material Research Society, April 93, "Correlation of Transport and AC Susceptibility Measurements on Granular Superconductors".
NASA summer fellowship, 93, with concluding paper in NASA bulletin, "Detection of Infrared Radiation by the Magnetic Screening of Superconducting Thin Films".
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