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:
Aug. 14, 2012
Filed:
May. 09, 2008
Applicant:
Hossein Zarei, Irvine, CA (US);
Inventor:
Hossein Zarei, Irvine, CA (US);
Assignee:
Freescale Semiconductor, Inc., Austin, TX (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 27/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
An integrated receiver circuit includes a phase locked loop circuit () with a voltage controlled oscillator (VCO) () and a quadrature generator circuit () which uses hybrid-branch line coupler circuits () coupled to buffered VCO outputs, where the hybrid-branch line coupler circuits () are tuned by same control voltage () that controls the VCO (). By replicating the VCO core circuitry in each hybrid-branch line coupler circuit () under common control of a control voltage, calibrated quadrature signals are generated that have the same frequency as the phase locked loop circuit ().