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. 13, 2007
Filed:
May. 19, 2005
Peter Capofreddi, San Francisco, CA (US);
Arvin Ramesh Shahani, Menlo Park, CA (US);
Derek Shaeffer, Redwood City, CA (US);
Korhan Titizer, Saratoga, CA (US);
Peter Capofreddi, San Francisco, CA (US);
Arvin Ramesh Shahani, Menlo Park, CA (US);
Derek Shaeffer, Redwood City, CA (US);
Korhan Titizer, Saratoga, CA (US);
Beceem Communications Inc., Santa Clara, CA (US);
Abstract
A transconductance cell is disclosed that includes a first transistor and a second transistor. A regulator regulates an average voltage in response to a reference voltage, where the average voltage corresponds to the average of a voltage at a bias terminal of the first transistor and a voltage at a bias terminal of the second transistor. A mixer including the transconductance cell is also disclosed. In the mixer, the transconductance cell receives a differential input voltage and produces a differential output current. The mixer also includes one or more switches that multiply the differential output current with an oscillator signal. A method is disclosed that includes measuring an average voltage of a voltage at a bias terminal of a first transistor and a voltage at a bias terminal of a second transistor and regulating the average voltage responsive to the measured average voltage and a reference voltage.