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:
Mar. 21, 2006
Filed:
Oct. 29, 2004
Applicants:
Hidetoshi Matsumoto, Kokubunji, JP;
Tomonori Tanoue, Machida, JP;
Satoshi Tanaka, Kokubunji, JP;
Kiichi Yamashita, Shiroyama, JP;
Inventors:
Hidetoshi Matsumoto, Kokubunji, JP;
Tomonori Tanoue, Machida, JP;
Satoshi Tanaka, Kokubunji, JP;
Kiichi Yamashita, Shiroyama, JP;
Assignee:
Renesas Technology Corp., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/68 (2006.01); H03G 3/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
A CDMA system is provided which includes a power amplifier module have a DC current amplifier. The DC and current amplifier detects a DC component of an input signal and amplifies this detected DC component. The power amplifier module also includes an amplifier which receives the current amplified by the DC current amplifier as an input current. The input signal supplied to the DC current amplifier changes in response to an input power level.