Communications: radio wave antennas – Antennas – With radio cabinet
Patent
1989-05-25
1990-12-04
Hille, Rolf
Communications: radio wave antennas
Antennas
With radio cabinet
343767, 343770, H01Q 124
Patent
active
049757113
ABSTRACT:
An antenna device of an easily carried portable radiophone, is provided, by disposing a slot antenna within an interior of the portable radiophone. The antenna device improves sensitivity of the device by arranging a slot antenna so as to transmit and receive vertical- and horizontal-polarized waves through the slot antenna device, which is constructed such that a conductive material is coated on a case of the portable radio telephone, an omni-directional first slot antenna for a vertical-polarized-wave is disposed horizontally over said case, and a second slot antenna for slant vertical-polarized or horizontal-polarized waves is disposed in a predetermined angle below said case, thereafter coupling in parallel a coaxial cable for feeding an electrical signal between each given position on the first and second slot antennas.
REFERENCES:
patent: 2687475 (1954-08-01), Scheldorf
patent: 3183511 (1965-05-01), Ajioka
patent: 4410890 (1983-10-01), Davis et al.
patent: 4723305 (1988-02-01), Phillips et al.
Bushnell Robert E.
Hille Rolf
Le Hoang-anh
Samsung Electronic Co. Ltd.
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