Accession Number : AD0285193

Title :   A SOLID-STATE INTERMEDIATE POWER AMPLIFIER FOR PROPOSED RADIO RELAYSYSTEM AN/GRC-103

Corporate Author : RADIO CORP OF AMERICA CAMDEN N J DEFENSE ELECTRONIC PRODUCTS

Personal Author(s) : KALLUS,S. ; NEWTON,A.

Report Date : 15 SEP 1962

Pagination or Media Count : 1

Abstract : The development is presented of a solid-state UHF power amplifier capable of delivering RF power output of two watts to the final stage of the AN/GRC-103 transmitter, covering the range of 220 mc - 700 mc. The circuit used comprised both a transistor driver operating in the 87.5 - 175 mc range and varactor multipliers. A double was used for the 220 - 350 mc band, and a quadrupler for the 350 - 700 mc band. The goal of two watts power output is achieved in the lower band with a double efficiency of better than 50%. The quadrupler efficiency is 25%, but the required drive power of 8 watts for a 2-watt output could not be developed at 175 mc using available transistors. Coupling networks were individually tuned for maximum over-all efficiency. (Author)

Descriptors :   *FREQUENCY MULTIPLIERS, *MICROWAVE RELAY SYSTEMS, *POWER AMPLIFIERS, *RADIO RELAY SYSTEMS, *RADIO TRANSMITTERS, *TRANSISTOR AMPLIFIERS, CIRCUITS, DIODES, ELECTRICAL IMPEDANCE, RADIOFREQUENCY AMPLIFIERS, RADIOFREQUENCY POWER, SEMICONDUCTORS, SOURCES, TRANSISTORS, TUNED AMPLIFIERS, ULTRAHIGH FREQUENCY, VERY HIGH FREQUENCY

Distribution Statement : APPROVED FOR PUBLIC RELEASE