S-BAND SOLID-STATE AMPLIFIER.
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1967
- Accession Number
- AD0823674
Entities
People
- S. C. Blum