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:
Oct. 21, 2008
Filed:
Nov. 16, 2005
Applicants:
King Chun Tsai, San Jose, CA (US);
Lawrence Tse, Fremont, CA (US);
George Chien, Cupertino, CA (US);
Inventors:
King Chun Tsai, San Jose, CA (US);
Lawrence Tse, Fremont, CA (US);
George Chien, Cupertino, CA (US);
Assignee:
Marvell International Ltd., Hamilton, BM;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 1/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
A gain calibration circuit comprises a generator that generates a constant overdrive voltage that biases a radio frequency (RF) mixer. A reference signal generator generates a reference signal. A comparator receives the reference signal and a second signal that is a function of a mixer bias current flowing through the RF mixer and that generates a difference signal. An adjustment circuit adjusts a transconductance gain of the RF mixer based on the difference signal.