High Efficiency Radar Transmit Module

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N68335-06-C-0222
Agency Tracking Number: N061-027-0089
Amount: $150,000.00
Phase: Phase I
Program: SBIR
Awards Year: 2006
Solicitation Year: 2006
Solicitation Topic Code: N06-027
Solicitation Number: 2006.1
Small Business Information
GREEN MOUNTAIN RADIO RESEARCH CO.
77 Vermont Avenue Fort Ethan Allen, Colchester, VT, 05446
DUNS: 057688624
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Frederick Raab
 Chief Engineer
 (802) 655-9670
 f.raab@ieee.org
Business Contact
 Frederick Raab
Title: Owner
Phone: (802) 655-9670
Email: f.raab@ieee.org
Research Institution
N/A
Abstract
UHF radar is used for surveillance from unmanned aerial vehicles (UAVs). A typical transmitter must produce multi-kilowatt pulses, but the efficiency of existing transmitters is only 20 to 30 percent. Low efficiency results in transmitters that are unnecessarily large and heavy. It also taxes the limited power available on a UAV and limits the capabilities of the UAV payloads. GMRR proposes to develop a new, high-efficiency transmitter for UHF radar. Efficiency is achieved through a combination of high-efficiency power amplifiers (class D, E, or F), RF-power transistors (GaN or LDMOS), electronic tuning, optimized combiners, and signal processing and control. The efficiency of this architecture is expected to be in the range of 60 to 70 percent. BENEFITS: This technology can be applied directly to UHF radars used for wind profiling and ground penetration (mine detection). With the addition of a wide-band modulator, it can be used in emerging UHF land-mobile and HDTV transmitters. With modification of the power amplifier for operation at higher frequencies, it can be used in cellular base stations. In all of these applications, the new transmitter will offer efficiencies that are double to triple those of the currently available transmitters. Other military applications include the JTRS, manpacks, and hand-held transmitters.

* information listed above is at the time of submission.

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