Wave transmission lines and networks – Long lines – Waveguide type
Patent
1998-02-27
1999-11-09
Bettendorf, Justin P.
Wave transmission lines and networks
Long lines
Waveguide type
333248, H01P 316
Patent
active
059822562
ABSTRACT:
A wiring board of the present invention is equipped with a laminated waveguide as a high-frequency signal transmission line. The laminated waveguide is composed of a dielectric substrate, a pair of main conductive layers laminated on the upper surface and the lower surface of the dielectric substrate, a plurality of via-holes extending in a thickness direction in the dielectric substrate so that they electrically connect the pair of the main conductive layers, and a sub-conductive layer provided in the dielectric substrate so that it is parallel to the main conductive layers and is electrically connected to the via-holes, the plurality of the via-holes form two rows extending in a signal transmitting direction with a mutual distance from each other, and in each row, the distance between adjacent via-holes is adjusted to less than 1/2 of a signal wavelength, a region surrounded with the pair of the main conductive layers and the two rows of the via-holes forms a signal transmitting region, and on both sides in the outside of the signal transmitting region, the sub-conductive layer is provided. The transmittting line by the laminated waveguide which is formed in this wiring board has especially excellent transmitting characteristics of high-frequency signals. In addition, since this wiring board can be easily produced by a laminating technology of ceramics, this wiring board also has excellent productivity.
REFERENCES:
patent: 3895435 (1975-07-01), Turner et al.
patent: 4716387 (1987-12-01), Igarashi
patent: 4918411 (1990-04-01), Staehlin et al.
patent: 5408053 (1995-04-01), Young
Takenoshita Takeshi
Uchimura Hiroshi
Bettendorf Justin P.
Kyocera Corporation
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