DDS driven DDS synthesizer for generating sinewave waveforms wit

Details DDS driven DDS synthesizer for generating sinewave waveforms wit DDS driven DDS synthesizer for generating sinewave waveforms wit

1994-11-08

1997-01-28

Tse, Young T.

Pulse or digital communications

Receivers

Angle modulation

375334, 327105, 364721, H03L 718

Patent

active

055984401

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.

REFERENCES:
patent: 4815018 (1989-03-01), Reinhardt
patent: 4951237 (1990-11-01), Essenwanger
patent: 4965533 (1990-10-01), Gilmore
patent: 5028887 (1991-07-01), Gilmore
patent: 5128623 (1992-07-01), Gilmore
patent: 5175511 (1992-12-01), Fujiwara
patent: 5184093 (1993-02-01), Itoh et al.
patent: 5382913 (1995-01-01), Carson et al.
M. P. Wilson, T. C. Tozer;; Spurious Reduction Techniques for Direct Digital Synthesis, IEE Colloq. on "DDFS", 19 Nov. 1991, IEE Digest 1991/ 172 pp. 1-5.
J. Fobbester, "Spur reduction in direct digital synthesis"; Electronic Product Design, Jun. 1992, pp. 23-24.

Affiliated with

Also associated with

Rating

DDS driven DDS synthesizer for generating sinewave waveforms wit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with DDS driven DDS synthesizer for generating sinewave waveforms wit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and DDS driven DDS synthesizer for generating sinewave waveforms wit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-946155