Acoustic surface wave digital phase shift modulator

Details Acoustic surface wave digital phase shift modulator Acoustic surface wave digital phase shift modulator

H - Electricity

03

D

329/14

H03D 3/00 (2006.01) H03K 9/00 (2006.01) H04L 27/233 (2006.01) H04L 27/18 (2006.01)

Patent

CA 1047612

ABSTRACT A demodulator for a digital code differential phase shift modulated signal comprising: an input transducer for launching surface acoustic waves corresponding to a received modulated signal; a plurality of output transducers each of which is arranged to produce an output signal dependent on the relative phases of a number of successive code elements of said surface acoustic waves, each output transducer producing a larger output signal, in a predetermined sense, than any other output transducer when said successive elements have a particular phase relation, different for each output transducer; and means responsive to the relative magnitudes of the outputs of said output transducers. -1-

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