Communications: radio wave antennas – Antennas – Microstrip
Patent
1987-08-04
1989-05-09
Sikes, William L.
Communications: radio wave antennas
Antennas
Microstrip
343830, 343846, H01Q 138
Patent
active
048293091
ABSTRACT:
A plane antenna comprises a power-supply circuit, a radiator circuit and an earthing conductor which are stacked respectively with a dielectric layer interposed between them, in which the power-supply and radiator circuits are made independent of each other as electromagnetically coupled to each other and at least one of the dielectric layers is formed with a foamed resin, whereby insertion loss can be reduced to remarkably improve the antenna characteristics. Only with the interposition of the foamed resin dielectric layer or layers, an effective separation is achieved between at least the power-supply circuit and the earthing conductor or the power-supply circuit and the radiator circuit, for a large extent improvement in the assembling ability.
REFERENCES:
patent: 3665480 (1972-05-01), Fassett
patent: 3718935 (1973-02-01), Ranghelli et al.
patent: 3747114 (1973-07-01), Shyhalla
patent: 4475107 (1984-10-01), Makimoto et al.
patent: 4477813 (1984-10-01), Weiss
patent: 4527165 (1985-07-01), de Ronde
patent: 4633262 (1986-12-01), Traut
Fujii Yasuhiro
Kitsuda Yoshihiro
Kondo Sadaaki
Masamoto Kyoji
Matsuo Masayuki
Matsushita Electric & Works Ltd.
Sikes William L.
Wimer Michael C.
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