System and method for providing a transmitter for polar modulation and power amplifier linearization
US7558542B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 2006 |
| Grant date | Jul 7, 2009 |
| Priority date | — |
| Expiry date | Sep 25, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2001/0433
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A transmitter circuit is disclosed for use in a multi-frequency wireless communication system. The transmitter circuit includes an input modulation unit, a phase modulation system, and an amplitude modulation system. The input modulation unit receives at least one signal that is representative of information to be modulated. The phase modulation system is coupled to the input modulation unit and provides a phase modulation on an output signal. The phase modulation system includes a phase detection system and an adjustable power amplifier. The amplitude modulation system is coupled to the input modulation unit and provides amplitude modulation on the output signal. The amplitude modulation system includes an amplitude detection system for providing an output signal to the adjustable power amplifier, and a variable gain amplifier coupled to the adjustable power amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.