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TSV Engineering is owned and operated by John Freed. I have over 21 years of RF design experience working on all types of communications equipment ranging from high power land mobile radios to handheld cellular telephones. I have done design work from circuits to system level on AM, FM, SSB, TDMA, GSM, and CDMA. TSV Engineering software was developed from needing to have an easy to use tool to help solve day-to-day design problems. Additional products are currently under development and will be offered for sale when complete. Some of my published work includes these papers and articles: "Interfacing to Balanced Input/Output Devices in Wireless Circuit Design" - Paper presented at RF Expo '97, September 11, 1997 This paper is available for downloading from this site. "Key Topics in Radio System Design" - Paper presented at Wireless Expo '93, January 1993 "Equations Provide Accurate Third Order IMD Analysis", Microwaves and RF magazine, August 1992 "A Program for the Design of Coupled Resonator Bandpass Filters", RF Design magazine, September 1992 "Technical Considerations for Vehicular Fiber Optic Links", Mobile Radio Technology magazine, March 1989 US Patent #5,900,785 - System and Method for Offsetting Load Switching Transients in a Frequency Synthesizer US Patent #6,009,318 - Electronically Adjustable Balanced-to-Unbalanced Converters I currently work as an RF circuits and systems consulting engineer for a major manufacturer of telecommunications equipment in the Research Triangle Park, NC area. |