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. 24, 2001
Filed:
Oct. 22, 1999
Applicant:
Inventors:
William Eric Main, Mesa, AZ (US);
Jeffrey C. Durec, Chandler, AZ (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03B 1/900 ; H03L 7/00 ;
U.S. Cl.
CPC ...
H03B 1/900 ; H03L 7/00 ;
Abstract
A circuit for doubling the frequency of an input signal. The circuit includes a full-wave rectifier that rectifies the input signal to generate an output signal with double the frequency of the input signal. The output signal is compared to a predetermined voltage. Based on this comparison, a control signal is fed back to the full-wave rectifier and the output of the rectifier is adjusted to a predetermined level. In this manner the frequency of the input signal is doubled, and the output power is maintained constant, independent of the input power level.