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:
Apr. 01, 2003
Filed:
Sep. 11, 2000
Roy W. Berquist, Toddville, IA (US);
Richard A. Freeman, Cedar Rapids, IA (US);
Robert A. Newgard, Central City, IA (US);
Rockwell Collins, Inc., Cedar Rapids, IA (US);
Abstract
An integrated frequency source with an integrated frequency standard and an integrated frequency synthesizer is disclosed. A voltage-controlled oscillator in the frequency standard is eliminated with a resulting improvement in phase noise. A reference frequency in the frequency standard is provided directly to the frequency synthesizer. The integrated frequency source is put on frequency over temperature by storing reference frequency errors over temperature in a lookup table, measuring the temperature, and calculating in a microprocessor synthesizer control data that offsets the synthesizer to compensate for reference frequency errors.