Adaptively stabilized RF amplifier
US4673886A · kind A · utility
25Cited by
8References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 26, 1986 |
| Grant date | Jun 16, 1987 |
| Priority date | — |
| Expiry date | Feb 26, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/19
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An output transistor of an RF power amplifier remains stable so that it does not generate subharmonic spurious outputs. An adaptive stabilization network maintains the stability of the output by decreasing the impedance presented to the output transistor when voltage levels at the output transistor exceed a predetermined level. A combination consisting of a peak detector coupled to a Zener diode senses the predetermined level. A PIN diode couples to the Zener diode and to the output transistor so that the PIN diode becomes forward biased when the predetermined level is exceeded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.