Band pass filter

Details Band pass filter Band pass filter

1982-09-21

1984-06-05

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Frequency domain filters utilizing only lumped parameters

333175, 333176, 333177, H03H 709, H03H 7075

Patent

active

044531451

ABSTRACT:
A band-pass filter circuit has series elements, comprising a parallel resonant circuit and a first inductance, and shunt elements comprising a series resonant circuit and a second inductance, the resonant circuits comprising variable capacitances to permit variation of the frequency over a frequency band. The second inductance may be a transformer. The variable capacitances may be constituted by a plurality of switchable component capacitances, having switches connected between the capacitances and ground.

REFERENCES:
patent: 1850146 (1982-03-01), Zobel
patent: 4369416 (1983-01-01), Zapp et al.

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