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. 04, 2000
Filed:
Jun. 17, 1998
Applicant:
Inventor:
Christopher Koszarsky, Holly Springs, NC (US);
Assignee:
Ericsson Inc., Research Triangle Park, NC (US);
Primary Examiner:
Int. Cl.
CPC ...
H03L / ;
U.S. Cl.
CPC ...
327156 ; 327115 ; 327117 ; 327147 ;
Abstract
A phase lock loop circuit comprising a reference frequency divider, wherein the divisor increases until the desired operating frequency is reached. The input frequency is delivered to a summing circuit that sums the input frequency with an output frequency. The resultant frequency is delivered to a phase comparator, which generates an error voltage. The error voltage is used to drive a voltage-controlled oscillator to generate an output frequency. A divisor in the voltage-controlled oscillator increases synchronously with the reference frequency divider until the desired operating frequency is reached.