Embedded ground plane for providing shielded layers in low volum

Details Embedded ground plane for providing shielded layers in low volum Embedded ground plane for providing shielded layers in low volum

1994-01-28

1995-11-14

Gensler, Paul

Wave transmission lines and networks

Plural channel systems

Having branched circuits

333120, 333161, 333238, 333246, H01P 512

Patent

active

054670640

ABSTRACT:
An electrical circuit (400) includes a first input means (401) for providing an input signal, a first output means (406) for providing an output signal, and a transmission line device (405) electrically positioned between the first input means (401) and the first output means (406). The first transmission line device includes a first ground plane (409) disposed on a first dielectric substrate (402), a first conductive layer (405-1) enclosing a first area on a second dielectric substrate (403) that is positioned substantially adjacent to the first dielectric substrate (402). The transmission line device (405) further includes a second conductive layer (405-2) that encloses an area corresponding to the first area on a first major surface of a third dielectric substrate (404) that is positioned substantially adjacent to the second dielectric substrate. Lastly, an embedded ground plane (411) is disposed on a fourth dielectric substrate (412)that is positioned substantially between the second dielectric substrate (403) and the third dielectric substrate (404 ).

REFERENCES:
patent: 4494083 (1985-01-01), Josefsson et al.
patent: 5146191 (1992-09-01), Mandai et al.
patent: 5369379 (1994-11-01), Fujiki

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