High-efficiency power amplifier for multipurpose portable radio

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N00178-03-C-3092
Agency Tracking Number: N031-0811
Amount: $70,000.00
Phase: Phase I
Program: SBIR
Awards Year: 2003
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
50 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
Business Contact
 Frederick Raab
Title: Owner
Phone: (802) 655-9670
Email: f.raab@ieee.org
Research Institution
There is a need for a portable command-post transmitter that can be deployed in an emergency situation. Interoperability among the different military services and civilian agencies is required. Consequently, the transmitter must operate at allfrequencies from 200 MHz to 3 GHz. It must also be capable of generating a wide variety of different signals. The proposed phase-I program will investigate the feasibility of a high-efficiency transmitter for this purpose. The proposed transmitter willbe based upon a combination of a high-efficiency RF-power amplifier (PA), high-efficiency modulation technique, and electronic tuning. The high-efficiency RF PA ensures the maximum efficiency at peak output, while the modulation technique ensures thatefficiency remains high for all signal amplitudes. Electronic tuning allows the transmitter to maintain optimum performance at all frequencies in its band of operation. This technology will enable small, light-weight radios capable of operating over a wide range of frequency and for a long time from a single battery. Military applications include airborne jammers and portable communication transceivers. Similarbenefits are possible in a variety of commercial applications. Cellular base stations have similar output power and frequency range, but the average efficiency of current transmitters is no more than 10 percent. Application of this technology canincrease the output power by 20 percent and reduce the power consumption by a factor of 4 to 6. The resultant transmitter will not only cost less to buy, but also less to operate. Broadcast transmitters and a variety of communication radios can alsobenefit from this technology.

* Information listed above is at the time of submission. *

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