Active bias for radio frequency power amplifier
US5570065A · kind A · utility
18Cited by
13References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1994 |
| Grant date | Oct 29, 1996 |
| Priority date | — |
| Expiry date | Aug 26, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F1/302
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A transceiver (100) includes a radio frequency power amplifier (116) which is biased by an active bias circuit (110). Active bias circuit (110) provides a low cost bias circuit for amplifier (116) which adjusts the bias over changes in temperature and supply voltage levels to provide a constant output power. A set of control inputs (122-126) coming from controller (108) provide for power output level adjustment for the amplifier (116) in a frequency modulated (FM) environment and for both power and modulation level adjustments in an amplitude modulated (AM) environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.