Power amplifier protection
US7268990B1 · kind B1 · utility
11Cited by
10References
63Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2004 |
| Grant date | Sep 11, 2007 |
| Priority date | — |
| Expiry date | Aug 12, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/435
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A power amplifier protection circuit that includes protection circuitry to variably shunt an input radio frequency (RF) signal to AC ground, turn off bias to an output transistor of a power amplifier, and turn off the output transistor. The power amplifier protection circuit features an asymmetrical control that can quickly shut off a power amplifier, and turn on the power amplifier at a steady, controlled rate when an output transistor exceeds a predetermined threshold voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.