Surface acoustic wave notch filter

Details Surface acoustic wave notch filter Surface acoustic wave notch filter

1976-04-05

1977-04-12

Smith, Alfred E.

Wave transmission lines and networks

Automatically controlled systems

With control of equalizer and/or delay network

310 82, 333 30R, H03H 926, H03H 930, H01L 4104

Patent

active

040178137

ABSTRACT:
A surface acoustic wave device including a synchronous reflection array disposed in a delay line between the input and output transducers, the synchronous reflection array having a synchronous reflection frequency that distorts the beam profile of propagating surface acoustic wave energy in the delay line so that when the beam profile is amplitude averaged at the output transducer, the transducer output signal has a relatively deep notch in amplitude at the synchronous reflection frequency.

REFERENCES:
patent: 3568102 (1971-03-01), Tseng
patent: 3753164 (1973-08-01), De Vries
patent: 3946338 (1976-03-01), Schmidt
B534,991, Jan. 1976, Weglein, 333/72.

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