Power amplifier with feedback impedance for stable output
US8508294B2 · kind B2 · utility
1Cited by
2References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 3, 2011 |
| Grant date | Aug 13, 2013 |
| Priority date | — |
| Expiry date | Jan 3, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/191
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In one embodiment, an apparatus includes an amplifier circuit having a phase shift. The amplifier circuit amplifies a signal for wireless transmission. A feedback circuit is coupled to the amplifier circuit and includes a capacitor. An input impedance to the amplifier circuit has a same impedance characteristic as a feedback circuit impedance of the feedback circuit. A total phase shift of the signal for the amplifier circuit and the feedback circuit is less than a threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.