Frequency selector apparatus

Wave transmission lines and networks – Coupling networks – Electromechanical filter

Patent

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Details

330 45, 330 55, 333153, 357 26, H03H 972, H03H 964, H03H 968, H03F 700

Patent

active

042887658

ABSTRACT:
A frequency selector apparatus which effects a frequency selection by providing at least one reflecting electrode at a position adjacent elastic surface wave transducer or transducers provided in an acoustic wave propagation track in a piezoelectric medium so as to reflect a frequency component selected by a parametric interaction with an a.c. electrical signal applied to said reflecting electrode.

REFERENCES:
patent: 3388334 (1968-06-01), Adler
patent: 3715674 (1973-02-01), Bahr
patent: 3882408 (1975-05-01), Auld
patent: 4081769 (1978-03-01), Shreve

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