Surface acoustic wave device for differential phase shift keying

Details Surface acoustic wave device for differential phase shift keying Surface acoustic wave device for differential phase shift keying

1986-06-18

1989-06-20

Smith, Jerry

Boots, shoes, and leggings

333193, 333196, G06G 712, H03H 900

Patent

active

048414700

ABSTRACT:
A differential phase shift keying convolver having a plurality of tracks includes at least one track where an opposite phase convolution output is produced. Each track includes two output gates spaced at the center for differential phase shift keying demodulation. Among these output gates, some gates selected in accordance with the phase relationship between convolution outputs are connected to provide sum and/or difference outputs of the convolution signals. The opposite phase convolution outputs can be produced by arranging at least one of the input transducers in a step-like configuration, by using multistrip couplers, or by providing a metal film in a selected position of the traveling path of surface acoustic waves for application of a control voltage.

REFERENCES:
patent: 4392009 (1986-05-01), Masheff
patent: 4635221 (1987-01-01), Kerr
patent: 4675839 (1987-06-01), Kerr
patent: 4691326 (1987-09-01), Tsuchiya
patent: 4745378 (1988-05-01), Niitsuma et al.

Affiliated with

Also associated with

Rating

Surface acoustic wave device for differential phase shift keying does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Surface acoustic wave device for differential phase shift keying, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Surface acoustic wave device for differential phase shift keying will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-530166