Accession Number : AD0823674

Title :   S-BAND SOLID-STATE AMPLIFIER.

Descriptive Note : Final rept. Mar 66-Aug 67,

Corporate Author : RADIO CORP OF AMERICA PRINCETON NJ ASTRO-ELECTRONICS DIV

Personal Author(s) : Blum, S. C.

Report Date : NOV 1967

Pagination or Media Count : 28

Abstract : An S-band solid-state amplifier was designed, breadboarded, and tested which provides 9.1 watts of CW output power and 31.5 db of power gain, within the 100-MHz bandwidth from 2.2 to 2.3 GHz. The amplifier contains seven stages of amplification in series; two stages operate Class A, one stage operates Class B, and four stages operate Class C. The amplifiers within the stages each contain a single RCA Type TA7003 transistor. The output of the fourth stage is split, using hybrids, and feeds the next stage (four amplifiers); the output of each of these four amplifiers is split, again using stripline hybrids, to drive the next two stages (16 amplifiers per stage). These 16 outputs are combined, through four levels of hybrids in series and with approximately 1.0 db loss, to produce the single output. The RCA Type TA7003, a one-watt, 2-GHz coaxial transistor, was used in a tunable coaxial geometry to provide the desired gain and bandwidth. The peak-to-peak variation in output power is one db with an input power of +8 dbm; the overall amplifier efficiency varies between 8.0 and 11.6 percent, while the individual amplifier (within the seven stages) efficiencies vary between 18 and 35 percent. (Author)

Descriptors :   (*TRANSISTOR AMPLIFIERS, TELEMETERING TRANSMITTERS), (*MICROWAVE AMPLIFIERS, TELEMETERING TRANSMITTERS), S BAND, TUNED CIRCUITS, HALOCARBON PLASTICS, GLASS TEXTILES, INTEGRATED CIRCUITS, GAIN, BANDWIDTH, STRIP TRANSMISSION LINES.

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE