High efficiency UHF linear power amplifier
US5105164A · kind A · utility
22Cited by
6References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 28, 1989 |
| Grant date | Apr 14, 1992 |
| Priority date | — |
| Expiry date | Feb 28, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/99
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An RF amplifier for a phase and envelope varying signal employs a class C operated device for high efficiency. In order to improve the linearity of the class C operated device, a signal corresponding to the envelope of the amplifier output is formed and a portion thereof is fed back to an envelope modulation element such as a pulse width modulator connected to the class C operated device to reduce distortion at the amplifier output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.