The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 24, 2009
Filed:
Aug. 06, 2007
Applicant:
Ren-chieh Liu, Chang-Hua Hsien, TW;
Inventor:
Ren-Chieh Liu, Chang-Hua Hsien, TW;
Assignee:
Realtek Semiconductor Corp., HsinChu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03G 3/30 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention discloses an adjustable gain power amplifier circuit. The adjustable gain power amplifier circuit includes a power amplifying unit for receiving and amplifying an input signal to generate an output signal; a power detecting unit for detecting power of the input signal to generate a detecting signal; and a biasing control unit for generating a biasing signal according to the detecting signal and to output the biasing signal.