Method and apparatus for controlling a peak envelope power of a PA
US5349300A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 1993 |
| Grant date | Sep 20, 1994 |
| Priority date | — |
| Expiry date | Aug 10, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G3/3042
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method and apparatus is provided for controlling peak envelope power level in a power amplifier (PA) (10). The method includes the steps of measuring (101) a first peak envelope power value of an input of the PA during a first time period, comparing (102) the first peak envelope power value with a threshold value, and introducing a phase change (103) into a selected signal of a plurality of signals being amplified by the PA when the first peak envelope power value exceeds the threshold. The method further includes measuring (104) a second peak envelope power value during a second time period, comparing (105) the first and second peak envelope power values, and reversing (106) the phase change to the selected signal when the second peak envelope power value exceeds the first peak envelope power value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.