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:
Jan. 04, 2011
Filed:
Feb. 04, 2009
Toan Thanh Nguyen, San Clara, CA (US);
Thungoc M. Tran, San Jose, CA (US);
Sergey Shumarayev, Los Altos Hills, CA (US);
Toan Thanh Nguyen, San Clara, CA (US);
Thungoc M. Tran, San Jose, CA (US);
Sergey Shumarayev, Los Altos Hills, CA (US);
Altera Corporation, San Jose, CA (US);
Abstract
A circuit includes a differential circuit that generates a differential output signal at first and second output nodes. The circuit also includes a first variable capacitor coupled to the first output node of the differential circuit, and a second variable capacitor coupled to the second output node of the differential circuit. A control circuit controls capacitances of the first and the second variable capacitors in response to a measurement of the differential output signal.