Scheme for maximizing efficiency of power amplifier under power backoff conditions
US6630899B2 · kind B2 · utility
10Cited by
3References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 18, 2001 |
| Grant date | Oct 7, 2003 |
| Priority date | — |
| Expiry date | Jul 18, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/372
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A bandpass amplifier for use in a communication system is described. The amplifier includes a filter, a quantizer, a driver, and a feedback loop. The filter filters the input signal, thereby generating a filtered signal. The quantizer quantizes the filtered signal into one of two values, thereby generating a quantized signal. The driver amplifies the quantized signal, thereby generating the output signal. The feedback loop feeds the output signal to the filter. The quantizer has characteristics in which the quantized signal does not fluctuate between the two values when the input signal is substantially stable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.