RF power amplifier circuit
US6990323B2 · kind B2 · utility
74Cited by
4References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 11, 2002 |
| Grant date | Jan 24, 2006 |
| Priority date | — |
| Expiry date | Feb 21, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F1/52
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A RF power amplifier circuit has at least one power transistor and a protection circuit protecting the power transistor against high voltages that lead to a destructive breakdown of the transistor. The circuit comprises a power transistor (2), a biasing circuit (6) biasing the power transistor; a peak detector (8) measuring the output voltage of the power transistor; and a comparator circuit (12) connected to the peak detector (8) and designed to reduce the base current of the power transistor (2) when controlled by the peak detector (8).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.