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:
Mar. 11, 2008
Filed:
Aug. 03, 2006
Applicant:
Jinghong Chen, Basking Ridge, NJ (US);
Inventor:
Jinghong Chen, Basking Ridge, NJ (US);
Assignee:
Agere Systems, Inc., Allentown, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03B 5/12 (2006.01); H03B 27/00 (2006.01); H03L 7/24 (2006.01);
U.S. Cl.
CPC ...
Abstract
A voltage controlled oscillator unit is provided with cross coupled voltage controlled oscillators to generate quadrature phases. One control stage adjusts coupling between the oscillators. Another control stage adjusts the tail current that applies operating bias to the oscillators and to the couplers, respectively. The cross coupling and tail current control stages are arranged so that tuning one simultaneously and oppositely tunes the other for simultaneous adjustment in opposite directions. This limits the power consumption of the oscillator unit throughout the range of frequency control.