Protection circuit and method for RF power amplifiers in WLAN tranceivers
US6856200B1 · kind B1 · utility
4Cited by
10References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 19, 2002 |
| Grant date | Feb 15, 2005 |
| Priority date | — |
| Expiry date | Oct 17, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45638
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A protection circuit for a power amplifier of a radio frequency transmitter includes a sensing circuit that generates a sensed signal based on an output of the power amplifier. A reference signal generator generates a reference signal. A comparator communicates with the sensing circuit and the reference signal generator and outputs a first state when the reference signal exceeds the sensed signal and a second state when the sensed signal exceeds the reference signal. A turn off circuit turns off the power amplifier when the comparator is in the second state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.