Signal bandpass filter apparatus

Details Signal bandpass filter apparatus Signal bandpass filter apparatus

1978-04-04

1980-09-02

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Electromechanical filter

246 34R, 324 52, H03H 902, H03H 904, G08B 2900

Patent

active

RE0303941

ABSTRACT:
A signal bandpass filter apparatus is disclosed wherein a direct short circuit between input and output is prevented and the loss of the ground reference of the filter is detectable and fail-safe in operation.

REFERENCES:
patent: 2832930 (1958-04-01), Hays
patent: 3809855 (1974-05-01), Neal
patent: 3931600 (1976-01-01), Nagashima et al.
patent: 4037179 (1977-07-01), Terayama
Johnson et al. "Mechanical Filters-a Review of Progress", IEEE Trans. on Sonics and Ultrasonics, vol. SU-18, No. 3, Jul. 1971, pp. 155-170.

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