Communications: radio wave antennas – Antennas – Slot type
Patent
1997-03-24
1999-11-02
Wong, Don
Communications: radio wave antennas
Antennas
Slot type
343700MS, 343767, H01Q 1310
Patent
active
059779241
ABSTRACT:
A novel planar antenna is capable of feeding power to a plurality of radiation elements at a low loss and has a construction suitable for mass production. The antenna comprises a multilayer substrate formed by laminating at least two dielectric substrates and having at least an upper layer, an intermediate layer and a lower layer, upper conductive plate provided with a plurality of slots and laid in the upper layer, at least one strip line formed in the intermediate layer so as to correspond to the plurality of slots, and a lower conductive plate formed in the lower layer. At least two slots correspond to the strip line, the strip line has a feed point to which a center conductor included in a high-frequency signal transmission line is connected, and a grounding point to which a grounding conductor included in the high-frequency signal transmission line is connected is formed on a second conductive surface.
REFERENCES:
patent: 3691563 (1972-09-01), Shelton
patent: 4054874 (1977-10-01), Oltman
patent: 5006858 (1991-04-01), Shirosaka
patent: 5181042 (1993-01-01), Kaise et al.
patent: 5189433 (1993-02-01), Stern et al.
patent: 5502453 (1996-03-01), Tsukamoto et al.
Kondoh Hiroshi
Takei Ken
Hitachi , Ltd.
Phan Tho
Wong Don
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