Envelope amplifier
US4831334A · kind A · utility
33Cited by
4References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 8, 1987 |
| Grant date | May 16, 1989 |
| Priority date | — |
| Expiry date | Jun 8, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/2178
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A high efficiency envelope amplifier is disclosed. The invention includes a power supply, a comparator and several switches. The power supply is capable of providing multiple outputs. The comparator measures the amplitude of an input signal against one of several threshold levels. When the input signal is within a predetermined range, a selected power supply output is switched incrementally switches small amounts of power, switching losses are substantially mitigated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.