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. 28, 1997
Filed:
Nov. 08, 1994
Jerzy Domagala, Dollard des Ormeaux, CA;
MPB Technologies Inc., Claire, CA;
Abstract
ADDS driven DDS Synthesizer (DDS.sup.2 Synthesizer) is disclosed, wherein the first DDS--a Reference DDS--generates a high resolution tunable output signal, which is in turn expanded and/or upconverted to the frequency bandwidth and range required by the clock of the second DDS--a DDS Divider. The DDS Divider acts as a programmable 'sinewave divider' of its tunable input clock by division ratios 'n' limited to the set of small integer numbers 3; 4; 5; 6 . . . , chosen to eliminate phase truncation spurs and limit quantization spurs to harmonics of the fundamental output and thus to provide a high spectral purity, high resolution, fast switching DDS based synthesizer.