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:
Jan. 17, 1995
Filed:
Mar. 29, 1993
Applicant:
Inventors:
Lansing M Carson, Chandler, AZ (US);
Dean J Boman, Chandler, AZ (US);
Assignee:
Motorola, Inc., , US;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ;
U.S. Cl.
CPC ...
327141 ; 327105 ;
Abstract
A method and apparatus for generating two phase-coherent first and second signals with arbitrary frequency ratio includes programming a first numerically controlled oscillator (NCO) with a first frequency word to produce a first NCO output. The first NCO output is processed to produce the first signal. The first frequency word is multiplied in a multiplier to produce a second frequency word which is corrected in phase relative to the first frequency word. A second NCO is programmed with the corrected second frequency word to produce a second NCO output. The second NCO output is processed to produce the second signal.