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:
Jul. 03, 2007
Filed:
Apr. 16, 2004
George Chien, Cupertino, CA (US);
Donghong Cui, San Jose, CA (US);
King Chun Tsai, San Jose, CA (US);
Yungping Hsu, Saratoga, CA (US);
Hsiao-cheng Tang, Milpitas, CA (US);
Yonghua Song, Saratoga, CA (US);
George Chien, Cupertino, CA (US);
Donghong Cui, San Jose, CA (US);
King Chun Tsai, San Jose, CA (US);
Yungping Hsu, Saratoga, CA (US);
Hsiao-Cheng Tang, Milpitas, CA (US);
Yonghua Song, Saratoga, CA (US);
Marvell International Ltd., Hamilton, BM;
Abstract
Apparatus, systems, and methods implementing techniques for reducing the variation of a DC offset are described. An input signal is amplified to produce an intermediate signal. The intermediate signal is processed to produce a feedback signal and an output signal, where the output signal has a DC offset that varies with a varying parameter of the circuitry used to process the intermediate signal. Variation of the DC offset of the output signal is reduced using the feedback signal. In one implementation, the circuitry used to process the intermediate signal is a variable-gain amplifier circuit, and the DC offset of the output signal varies with a gain of the variable-gain amplifier.