Slot antenna device for portable radiophone
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 4, 1990
Grant Date -
N/A
app pub date -
May 25, 1989
filing date -
Aug 31, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
First Claim
Family
International Classification(s)
Cited Art Landscape
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