Patent · US Active

System and method for power amplifier output power control

US7733176B2 · kind B2 · utility

3Cited by

3References

3Claims

0Family size

Assignees

Infineon Technologies AG · DE
AXIOM MICRODEVICES, INC. · US

Inventors

Rahul Magoon · Irvine, US
Ichiro Aoki · Arcadia, US
John Lyu · San Clemente, US
Scott David Kee · Dana Point, US
Roberto Aparico Joo · Newport Beach, US
Winfried Bakalski · Birkenfeld, DE
Thomas Bruder · Grafing, DE

Key dates

Filing date	Jan 18, 2007
Grant date	Jun 8, 2010
Priority date	—
Expiry date	May 26, 2027

Classification

Technology area (CPC H)Electricity
CPC primaryH03F2200/99
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

A system for controlling amplifier power is provided. The system includes a voltage envelope detector that receives a voltage signal and generates a voltage envelope signal. A current envelope detector receives a current signal and generates a current envelope signal. A power amplifier level controller receives the greater of the voltage envelope signal and the current envelope signal, such as by connecting the output of the voltage envelope detector and the current envelope detector at a common point and conducting the high frequency current components to ground via a capacitor. A power amplifier level control signal is then generated based on the voltage drop across the capacitor.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.