Electromechanical band-pass filters

Details Electromechanical band-pass filters Electromechanical band-pass filters

1976-07-21

1977-11-29

Smith, Alfred E.

Wave transmission lines and networks

Automatically controlled systems

With control of equalizer and/or delay network

310321, 333 72, H03H 902, H03H 926, H03H 924

Patent

active

040607755

ABSTRACT:
A band-pass electromechanical filter, comprising an input electromechanical transducer, an output electromechanical transducer and a mechanical filter disposed therebetween, said filter having, alternately disposed, p resonators and (p - 1) coupling pins, resonating all in the longitudinal mode, wherein the coupling pins have identical diameters and lengths varied according to their respective position within said mechanical filter, said length being maximum in the middle of the filter and progressively decreasing towards the ends thereof.

REFERENCES:
patent: 2647948 (1953-08-01), Roberts et al.

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