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:
Mar. 30, 2004
Filed:
Oct. 24, 2002
Bruce Alan Fette, Mesa, AZ (US);
General Dynamics Decision Systems, Inc, Scottsdale, AZ (US);
Abstract
A PLL-type frequency synthesizer ( ) in which a loop filter ( ) state is recorded during an earlier hop to a given frequency then assigned back to the loop filter ( ) during a subsequent hop to the same frequency is disclosed. The state is recorded through an A/D converter ( ) and assigned through a D/A converter ( ). Offset and linearity error is compensated in a compensation circuit ( ) so that the state subsequently assigned to the loop filter ( ) accurately matches the state that was previously measured for recording. Reference frequency and output signal dividers ( ) are both immediately initialized at a hop boundary ( ) so that the signals compared by a phase comparator ( ) are forced into a phase-matched condition.