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. 29, 2005
Filed:
Dec. 12, 2003
Varadarajan Devnath, Santa Clara, CA (US);
Jitendra Mohan, Santa Clara, CA (US);
Quyet Nguyen, San Jose, CA (US);
Yongseon Koh, Palo Alto, CA (US);
Varadarajan Devnath, Santa Clara, CA (US);
Jitendra Mohan, Santa Clara, CA (US);
Quyet Nguyen, San Jose, CA (US);
Yongseon Koh, Palo Alto, CA (US);
National Semiconductor Corporation, Santa Clara, CA (US);
Abstract
A circuit and method for generating quadrature signals with a deterministic phase relationship. Between two inductive-capacitive (LC) based quadrature voltage controlled oscillators (VCO), phase shift circuitry is interposed such that the individual LC VCO circuits produce signals with corresponding phase delays which ensure that the desired lead or lag phase relationship between the quadrature signals is achieved.