John Soo Lyu

US Patent:

7733176, Jun 8, 2010

Filed:

Jan 18, 2007

Appl. No.:

11/654744

Inventors:

Rahul Magoon - Irvine CA, US
Ichiro Aoki - San Clemente CA, US
John Lyu - San Clemente CA, US
Scott Kee - Dana Point CA, US
Roberto Aparico Joo - Newport Beach CA, US
Winfried Bakalski - Munich, DE
Thomas Bruder - Grafing, DE

Assignee:

Infineon Technologies AG - Munich
Axiom Microdevices, Inc. - Irvine CA

International Classification:

H03G 3/20

US Classification:

330140, 330279

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.

US Patent:

20080061875, Mar 13, 2008

Filed:

Jan 18, 2007

Appl. No.:

11/655000

Inventors:

Rahul Magoon - Irvine CA, US
Scott D. Kee - Dana Point CA, US
John E. Lyu - San Clemente CA, US
Ichiro Aoki - San Clemente CA, US
Roberto Aparicio Joo - Newport Beach CA, US

International Classification:

H03G 3/20

US Classification:

330140

Abstract:

An architecture for detecting amplifier power is provided. The architecture 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.