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:
Jul. 10, 2012
Filed:
Apr. 15, 2008
Gholamreza Yousefi Moghaddam, Ottawa, CA;
Dirk Pfaff, Ottawa, CA;
Sivakumar Kanesapillai, Ottawa, CA;
Gholamreza Yousefi Moghaddam, Ottawa, CA;
Dirk Pfaff, Ottawa, CA;
Sivakumar Kanesapillai, Ottawa, CA;
Diablo Technologies Inc., Ottawa, CA;
Abstract
A novel interpolating phase detector for use in a multiphase PLL is described comprising an array of individual phase comparators, all operating at essentially the same operating point which permits the circuits to be designed simultaneously for high speed and for low power consumption. Two adjacent phase outputs of a multi-phase VCO may be selected and interpolated in between, by selectively attaching a variable number of phase comparators to each phase output and summing their phase error outputs. By varying the number of phase comparators attached to each phase output, interpolation can be achieved with high linearity.