N way cancellation coupler for power amplifier
US6420929B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Aug 23, 2001 |
| Grant date | Jul 16, 2002 |
| Priority date | — |
| Expiry date | Aug 29, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F1/3229
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An N way carrier cancellation coupler (160), N being greater than 1, for use in a feed forward power amplifier (6), comprising a first N way divider (162), a second N way divider (166), an N way combiner (168), N carrier cancellation couplers (164), the inputs of each of the N carrier cancellation couplers (164) connected to the first N way divider (162) and the second N way divider (166), and the output of each of the N carrier cancellation couplers connected to the N way combiner (168). An M way distortion cancellation coupler (180) is also provided, as well as a feed forward power amplifier comprising a feed forward power amplifier having a first loop and a second loop, an N way carrier cancellation coupler (160), or an M way distortion cancellation coupler (180), or both.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.