Lockheed Martin Apr 2005 - Mar 2014
St Staff Electrical Engineer
Education:
University of Illinois at Urbana - Champaign
Bachelors, Bachelor of Science
Skills:
Rf/ Microwave Design Electrical Engineering Rf Dod Project Planning Six Sigma Systems Engineering Military Microwave Engineering Requirements Management Testing Integration Systems Design
Us Patents
Voltage Bias And Temperature Compensation Circuit For Radio Frequency Power Amplifier
Warren P. Reif - Fort Worth TX William Beckwith - Chandler AZ
Assignee:
Motorola, Inc. - Schaumburg IL
International Classification:
H03F 316
US Classification:
330277
Abstract:
A communication device (104) includes a radio frequency power amplifier (202) and a bias circuit (204). The power amplifier (202) includes a depletion mode MESFET (214) for RF power amplification. To properly bias the MESFET (214) in a circuit including logic components powered by a conventional battery (136), the bias circuit (204) includes a level shifter (223) to provide the necessary gate-to-source voltage for the MESFET (214). To maintain the RF output power from the communication device (104) constant over temperature, the bias circuit (204) output voltage varies over temperature to track the temperature variation of the MESFET (214).
Googleplus
Warren Reif
Youtube
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