Self-tuning variable impedance circuit for impedance matching of power amplifiers
US7202747B2 · kind B2 · utility
10Cited by
6References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 5, 2004 |
| Grant date | Apr 10, 2007 |
| Priority date | — |
| Expiry date | Sep 3, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/0458
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A self-tuning variable impedance circuit provides improved performance. A variation in the power applied to the variable impedance circuit causes a corresponding change in the impedance of the circuit, resulting in improved performance. For example, the variable impedance circuit may be a matching circuit that “follows” the output power of a power amplifier, thereby increasing the power efficiency of the power amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.