Electromechanical filter having encapsulated input and terminal

Details Electromechanical filter having encapsulated input and terminal Electromechanical filter having encapsulated input and terminal

1976-11-15

1978-09-12

Smith, Alfred E.

Wave transmission lines and networks

Automatically controlled systems

With control of equalizer and/or delay network

333 72, 333 30R, H03H 710, H03H 730

Patent

active

041141180

ABSTRACT:
An electromechanical filter has a plurality of mechanically coupled mechanical resonators disposed parallel to each other, in particular resonators of the flexural vibration type. The first and last resonators in the direction of transmission are each provided with an electrostrictive transducer element which has a feeder which is constituted, in particular, by an insulating bushing provided in a metallic base plate and is connected with an electrical input or terminal circuit, respectively, constructed as an LC resonant circuit. The capacitor of the input circuit or the terminal circuit is disposed within a trough-shaped recess in the base plate beneath the filter and the capacitors are encapsulated within an insulating material to provide a capacitor unit which fits into the recess in releasable engagement therewith.

REFERENCES:
patent: 2656516 (1953-10-01), Doelz
patent: 2799832 (1957-07-01), Niederman et al.
patent: 2829350 (1958-04-01), Ibsen
patent: 3931600 (1976-01-01), Nagashima

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