Power amplifier controller with polar transmitter
US8050638B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 2010 |
| Grant date | Nov 1, 2011 |
| Priority date | — |
| Expiry date | Aug 20, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2001/0425
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A power amplifier controller controls a power amplifier and is coupled to a polar modulator. The polar modulator generates an amplitude component and a phase-modulated component of the desired RF modulated signal, and outputs to the power amplifier controller. The power amplifier controller regenerates a combined phase and amplitude modulated RF signal to generate an input signal to a power amplifier by adjusting the gain of a VGA based on the amplitude component of the desired RF modulated signal. Concurrently, the power amplifier controller both controls an adjusted supply voltage to the PA and adjusts the gain of the VGA based upon an amplitude correction signal or amplitude error signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.