Wave transmission lines and networks – Plural channel systems – Having branched circuits
Patent
1995-06-23
1996-08-20
Gensler, Paul
Wave transmission lines and networks
Plural channel systems
Having branched circuits
333134, 333185, 333246, 455 51, 455 62, H03H 746
Patent
active
055482554
ABSTRACT:
A diplexer constructed on a stripline board includes a plurality of filters each having a series of filter sections providing an elongated physical configuration to the respective filter. Each filter section comprises an inductor and a capacitor. Each of the capacitors for each of the filters is formed in stripline format by laminating a pad of electrically conductive material to a sheet of electrically conductive material with the interposition of a layer of dielectric material between the pad and the sheet. Each inductor is formed as a coil wound about a core of air or solid magnetizable material. To provide for reduced physical size of the circuitry, thereby to accommodate emplacement of the circuitry within a television cable connection box, there is provided in a preferred embodiment of the invention filters of higher and lower frequency channels wherein the filter of the lower frequency channel has larger inductors. The lower frequency channel is bent to reduce overall size, the bending bringing distant inductors in close proximity. To reduce mutual coupling between the distant inductors, the inductors are arranged with mutually perpendicular orientations of their respective axes. Power combiners, power splitters, and relays are also included in the circuitry for provision of both incoming and outgoing telephony and television video signals.
REFERENCES:
patent: 3069635 (1962-12-01), Eickhoff
patent: 3733608 (1973-05-01), McGhay et al.
patent: 5027426 (1991-06-01), Chiocca, Jr.
Gensler Paul
Microphase Corporation
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