Mechanical filter with box-type coupling structure

Details Mechanical filter with box-type coupling structure Mechanical filter with box-type coupling structure

1981-12-28

1983-09-20

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Electromechanical filter

333187, 333197, H03H 950, H03H 9205

Patent

active

044059094

ABSTRACT:
A mechanical bandpass filter of the cascaded flexure mode resonator bar type is provided with a coupling structure improving strength an reducing rigid-body spurious modes. Coupling wires are provided on both the top and bottom surfaces of the resonator bars, not just in a single plane.

REFERENCES:
patent: 3015789 (1962-01-01), Honda et al.
Y. Tomikawa, D. P. Havens, R. A. Johnson and S. Sugawara, "Resonances in Flexure-Mode Mechanical Filters", Proceedings of 1976 Ultrasonics Symposium, Sep. 1976, pp. 597-601.
M. Konno, S. Sugawara, Y. Tomikawa and R. A. Johnson, "Mounted Free-Free Flexural Bar Resonator and Mechanical Filter", Proceedings of International Symposium on Circuits and Systems, Jun. 1979, pp. 1068-1071.
R. A. Johnson, "Mechanical Filters Take on Selective Jobs", Electronics, Oct. 13, 1977, pp. 81-85.

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