Accession Number : AD0907497

Title :   Complementary Broadband Power Amplifier, 225 to 400 Megahertz.

Descriptive Note : Final technical rept. 13 May 70-30 May 72,

Corporate Author : RCA SOLID STATE DIV SOMERVILLE NJ

Personal Author(s) : Minton, Robert

Report Date : DEC 1972

Pagination or Media Count : 84

Abstract : Twelve UHF high-power-amplifier modules were developed, utilizing thin-film hybrid integrated circuit technology and a modular building approach. Several functional, integrated, power-amplifier stages were cascaded and paralleled, utilizing 3-dB quadrature couplers to achieve the high power gain and output power. The power amplifiers were designed to operate over the 225- to 400-megahertz frequency range and provide a power output of 40 t0 50 watts of (CW) power. Each functional, integrated, power-amplifier stage utilized thin-film inductors, capacitors, resistors and transistor pellets mounted on a single 350-mil-square BeO substrate. These components were ultrasonically wire-bonded together forming a hybrid integrated circuit. The power amplifier stages were designed for direct insertion into a 50-ohm transmission line. The UHF power amplifier modules were designed specifically for amplitude-modulation systems where 40 to 50 watts fo peak power are required (10-watt carrier level). (Author)

Descriptors :   (*POWER AMPLIFIERS, BROADBAND), ULTRAHIGH FREQUENCY, INTEGRATED CIRCUITS, GAIN, TRANSISTOR AMPLIFIERS, TRANSMISSION LINES, TRANSISTORS, CAPACITORS, RESISTORS, SUBSTRATES, PUSH PULL AMPLIFIERS, BERYLLIUM OXIDES, AMPLITUDE MODULATION.

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE