N way phase cancellation power amplifier
US6700442B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Mar 1, 2002 |
| Grant date | Mar 2, 2004 |
| Priority date | — |
| Expiry date | Mar 1, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F1/3241
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A low distortion power amplifier, where N is greater than 1, comprising an input divider (10) for dividing a received input signal (100), and outputting a first signal (104) and a main signal (102), a carrier cancellation component (50) connected to the input divider (10) for receiving the first signal (104) and outputting a distortion signal (114), an input attenuator (22) receiving the main signal (102) and outputting an attenuated main signal (118) to an input delay device (24) yielding a delayed, attenuated main signal (118), and an N way distortion cancellation component (52) having a first input connected to the carrier cancellation component (50) for receiving the distortion signal (114) and a second input connected to the input delay device (24) for receiving the delayed, attenuated main signal (118) and an output for outputting an amplified output signal (144) having low distortion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.