Filter unit for connectors having filter capacitors formed on op

Details Filter unit for connectors having filter capacitors formed on op Filter unit for connectors having filter capacitors formed on op

1988-06-24

1990-06-05

LaRoche, Eugene R.

Wave transmission lines and networks

Coupling networks

Frequency domain filters utilizing only lumped parameters

333185, 361302, 361309, 439607, 439620, H01R 13648

Patent

active

049317547

ABSTRACT:
Filter unit for connectors, comprising an electrically insulating substrate (2) with passages (3) for the contact elements of a connector, capacitors being disposed on both flat sides (4, 4') of the substrate (2) in the region of the passages (3), said capacitors made up of first electrodes, each formed by at least one layer (5, 5') of electrically conducting material extending over said sides (4, 4') of the substrate (2), and provided with correspondingly situated larger passages (6), second electrodes formed by spaced-apart electrode patches (9, 9') with passages (10) and at least one layer (7, 7') of dielectric material extending between said first and second electrodes. By connecting said second electrodes to the contact elements of a connector, and by connecting said first electrodes to the housing thereof, each contact element is capacitively decoupled. The invention further relates to a holder for mounting said filter unit to an assembled connector, a connector and an adaptor with an integrated filter unit.

REFERENCES:
patent: 3538464 (1970-11-01), Walsh
patent: 4215326 (1980-07-01), Hollyday
patent: 4407552 (1983-10-01), Watanabe et al.
patent: 4494092 (1985-01-01), Griffin
patent: 4673237 (1987-06-01), Wadsworth
patent: 4682129 (1987-07-01), Bakermans et al.
patent: 4726790 (1988-02-01), Hadjis
patent: 4853659 (1989-08-01), Kling
Bootros, Kamal S., "A New Approach to the Design of EMI Filter Connectors Using Planar Filters"; 12th Am. Connector Symp. Proc.; Oct. 17, 18, 1979; pp. 222-226.

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