Accession Number : AD0903527

Title :   Development of an 80-Watt Linear Broadband Amplifier.

Descriptive Note : Final rept. 1 Jul 70-31 Jan 72,

Corporate Author : RCA SOLID STATE DIV SOMERVILLE NJ

Personal Author(s) : Kamnitsis, Constantine ; Meisel, Herbert R. ; Minton, Robert

Report Date : MAY 1972

Pagination or Media Count : 77

Abstract : Two UHF high-power amplifier modules were developed, utilizing thin-film hybrid integrated circuit technology and a modular building block approach. Several functional integrated power amplifier stages were cascaded and paralleled, utilizing 3-dB quadrature couplers to achieve the high power gain and power output. The power amplifiers were designed to operate over the 225- to 400-megahertz frequency range and provide an objective power output of 80 watts (peak) power. Each functional integrated power amplifier stage utilizes a self-contained variable DC-bias circuit to achieve linear operation. This circuit provides the appropriate change in base-to-emitter forward bias at different power output levels of the RF amplifiers. The UHF power amplifier modules were designed specifically for amplitude-modulated systems where high peak envelope power is required. (Author)

Descriptors :   *TRANSISTOR AMPLIFIERS), (*POWER AMPLIFIERS, BROADBAND), (*RADIOFREQUENCY AMPLIFIERS, ULTRAHIGH FREQUENCY, LINEAR SYSTEMS, GAIN, INTEGRATED CIRCUITS, MODULES(ELECTRONICS), COUPLING CIRCUITS, AMPLITUDE MODULATION, DIRECT CURRENT, FILMS, PASSIVE SYSTEMS, STRIP TRANSMISSION LINES, S BAND, CAPACITORS, ALUMINUM, TRANSISTORS, MANUFACTURING.

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE