Communications: radio wave antennas – Antennas – Microstrip
Patent
1992-06-15
1994-05-31
Hajec, Donald
Communications: radio wave antennas
Antennas
Microstrip
343767, 343770, H01Q 1308
Patent
active
053173244
ABSTRACT:
In a printed antenna, a window is formed in a grounded conductor provided on one side of an insulator substrate, and a strip conductor is formed in the window as a strip antenna element. The grounded conductor has convex portions projecting toward a central portion of the strip conductor in a longitudinal direction of the strip conductor. Furthermore, in a printed antenna, a window is formed in a grounded conductor provided on one side of an insulator substrate and two strip conductor are formed in the window and a short conductor is provided to connect a longitudinally central portion of each of the strip conductor with the grounded conductor. Furthermore, in a printed antenna, a window is formed in a grounded conductor provided on one side of an insulator substrate, a strip conductor is formed in the window and a short antenna element is formed in the grounded conductor. A short conductor connects a longitudinally central portion of the strip conductor with the grounded conductor. Furthermore, a reflector plate may be provided or a plurality of the above-mentioned printed antenna are arranged on an insulator conductor.
REFERENCES:
patent: 4138684 (1979-02-01), Kerr
patent: 4692769 (1987-09-01), Gegan
patent: 4958165 (1990-09-01), Axford et al.
patent: 4987421 (1991-01-01), Sunahara et al.
patent: 5064943 (1991-10-01), Rammos
1991 IEEE article, by Naito and Ito, Published Jun. 24, 1991 Electronics Letters, Aug. 2, 1990, vol. 26, No. 16, article by Naito and Ito.
Microwave Journal, No. 4, Apr. 1987, article by Ito.
Ito Koichi
Naito Motoyuki
Hajec Donald
Ho Tan
Sumitomo Metal & Mining Co., Ltd.
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