Feedthrough radio frequency filter

Details Feedthrough radio frequency filter Feedthrough radio frequency filter

1990-05-17

1991-06-11

LaRoche, Eugene R.

Wave transmission lines and networks

Coupling networks

Frequency domain filters utilizing only lumped parameters

333185, 439607, 439620, H03H 701, H01R 1366

Patent

active

050235770

ABSTRACT:
A solderless, feedthrough radio frequency filter has plates with individual openings for a plurality of physically parallel, elongated conductors. To provide capacitance, the plates are constructed of electrically conductive material and the conductors covered with dielectric material where they pass through the openings. To provide inductance, the conductors are circumscribed by sets of ferrite beads adjacent to the plates. The filter may be tuned capacitively by selecting the plate thickness and tuned inductively by selecting the configuration of the beads. More complex filters may be constructed by using a plurality of plates, including nonconductive plates, and a plurality of bead sets spaced along the conductors.

REFERENCES:
patent: 3710285 (1973-01-01), Schor et al.
patent: 4458220 (1984-07-01), Carter et al.
patent: 4484159 (1984-11-01), Whitley
patent: 4606598 (1986-08-01), Drzymkowski et al.
patent: 4792310 (1988-12-01), Hori et al.
patent: 4820174 (1989-04-01), Farrar et al.
patent: 4820202 (1989-04-01), Edwards et al.
patent: 4952896 (1990-08-01), Dawson, Jr.
Erie Technological Products Inc., "Erie Filters", Catalog 9001R, 1980, pp. , 10, 18 and 22.

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