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:
Sep. 16, 2003
Filed:
Jan. 22, 2002
Applicant:
Inventors:
Chao Xu, Allentown, PA (US);
Bijit Thakorbhai Patel, Breinigsville, PA (US);
Assignee:
PMC-Sierra, Inc., Santa Clara, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03B 2/700 ;
U.S. Cl.
CPC ...
H03B 2/700 ;
Abstract
VCO frequency is continuously variable through a wide frequency range in proportion to a first control voltage VC produced by a PLL containing the VCO. A second control voltage NVC is produced as a monotonically decreasing function of VC. A first current I is produced in proportion to VC and a second current I is produced in proportion to NVC. I is subtracted from I , producing a control current IC=I -I which is applied to the VCO.