Elastic bulk wave frequency filter

Details Elastic bulk wave frequency filter Elastic bulk wave frequency filter

1976-11-30

1978-02-14

Smith, Alfred E.

Wave transmission lines and networks

Automatically controlled systems

With control of equalizer and/or delay network

333 30R, 333 72, H03H 926, H03H 930, H03H 932, H01L 4104

Patent

active

040742130

ABSTRACT:
A high frequency elastic bulk wave filter, using the variation as a function of frequency of the direction in which a bulk wave travelling through an elastic body is diffracted by a flat surface of that body, formed with a grating. The bulk wave beam corresponding to the signal to be filtered, impinges under normal incidence on the grating, the profile of which is designed to minimize the amount of energy contained in the non-dispersive beam specularly reflected by the grating. The filter further comprises a transducer to collect the diffracted wave, applied to an inclined surface, which is parallel to the wave plane of the diffracted wave.

REFERENCES:
patent: 3283264 (1966-11-01), Papadakis
patent: 3300739 (1967-01-01), Mortley
patent: 3522557 (1970-08-01), Duncan et al.
patent: 3562676 (1971-02-01), Parker, Jr.

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