Mechanical filter and method of acoustically coupling waveguides

Details Mechanical filter and method of acoustically coupling waveguides Mechanical filter and method of acoustically coupling waveguides

1978-10-30

1981-09-15

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Electromechanical filter

333187, H03H 950, H03H 910

Patent

active

042900352

ABSTRACT:
Disclosed is a mechanical filter including a resonator mounted within a housing. A first acoustical waveguide extends through a bushing into the housing. Elastomer material fills the bushing and surrounds the first waveguide therein. A compliant member in the form of a bellows having an open end and a closed end is provided in the housing with the open end attached to the housing wall. The first acoustical waveguide is attached to the interior surface of the closed end of bellows, and a second acoustical waveguide is attached to the exterior surface of the closed end of the bellows and to the resonator. The compliant member provides coupling of the first and second waveguides and a hermetic seal.

REFERENCES:
patent: 2789557 (1957-04-01), Davis, Jr.
patent: 2998536 (1961-08-01), Dubsky et al.
patent: 3168659 (1965-02-01), Bayre et al.
patent: 3318152 (1967-05-01), Thompson et al.
patent: 3713035 (1973-01-01), Friedburg et al.

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