Wave transmission lines and networks – Automatically controlled systems – With control of equalizer and/or delay network
Patent
1976-10-12
1978-04-04
Smith, Alfred E.
Wave transmission lines and networks
Automatically controlled systems
With control of equalizer and/or delay network
333 70S, 339147R, H03H 704, H03H 1300, H01R 1710, H01R 1366
Patent
active
040830225
ABSTRACT:
A pi pin filter employs a tubular ferrite which receives a pin contact therein. The ferrite tube is metalized over at least a portion of its inner surface, at least two portions of its outer surface, and about its ends and receives the pin contact therein for electrical connection to the metalization by means of a spring contact, solder bonding or fusing. A plurality of dielectric layers extend radially of the ferrite tube and are bonded together to form an integral structure having metal capacitor plates between the layers. Some of the capacitor plates are interconnected, by a metalization to form the ground plates for connection to the metal shell of an electrical connector, while others of the metal plates located intermediate the first-mentioned metal plates are interconnected in two separate groups by a separate metalizations which, upon assembly, are fused to the respective metalized areas on the outer surface of the ferrite tube. A gap in the metalization between the two areas of the outer surface of the ferrite tube, together with the common connection of the first-mentioned plates provides a pair of capacitances and the ferrite tube constitutes an inductance connected between the two capacitances to form a pi filter.
REFERENCES:
patent: 3548347 (1970-12-01), Miller et al.
patent: 3638147 (1972-01-01), Denes
Arbuckle F. M.
Bunker Ramo Corporation
Lohff W.
Nussbaum Marvin
Smith Alfred E.
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