Electromechanical filter

Details Electromechanical filter Electromechanical filter

1979-02-15

1980-12-23

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Electromechanical filter

333186, 333197, H03H 924, H03H 950

Patent

active

042413214

ABSTRACT:
An electromechanical filter having minimum attenuation deviation in the pass band frequency range. The filter includes a plurality of mechanical resonators arranged substantially parallel to each other in one plane and mechanical couplers of longitudinal resonance characteristics which are disposed substantially transverse to the plurality of resonators for coupling the resonators together. The couplers have lengths which are between the first and second, and second and third oscillation modes of the longitudinal resonance characteristics. By virtue of the above structure, the couplers can be formed in a single mechanical coupling wire.

REFERENCES:
patent: 2955267 (1960-10-01), Mason
patent: 2969511 (1961-01-01), Borner
patent: 2994047 (1961-07-01), Borner
patent: 3013228 (1961-12-01), Kettel et al.
patent: 3086182 (1963-04-01), Borner
patent: 3445792 (1969-05-01), Borner et al.
Johnson et al.-"Mechanical Filters-A Review of Progress" IEEE Transactions on Sonics and Ultrasonics, vol. SU-18, No. 3, Jul. 1971; pp. 155-170.
Borner et al.-"Mechanische Filter fur die Nachrichtentechnik," Telefunken-Zeitung, Jg. 31 (Jun. 1958) Heft 12; pp. 105-114.

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