Power amplifier controller circuit
US8260225B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 8, 2011 |
| Grant date | Sep 4, 2012 |
| Priority date | — |
| Expiry date | Apr 8, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/99
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A power amplifier controller circuit controls a power amplifier based upon an amplitude correction signal indicating the amplitude difference between the amplitude of the input signal and an attenuated amplitude of the output signal. The power amplifier controller circuit comprises an amplitude control loop and a phase control loop. The amplitude control loop adjusts the supply voltage to the power amplifier based upon the amplitude correction signal. The amplitude correction signal may also be split into two or more signals with different frequency ranges and provided respectively to different types of power supplies with different efficiencies to generate the adjusted supply voltage to the power amplifier. The phase control loop adjusts the phase of the input signal based upon a phase error signal indicating a phase difference between phases of the input signal and the output signal to reduce phase distortion generated by the power amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.