Multiband television/communications antenna
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United States of America Patent
Stats
-
Sep 19, 1989
Grant Date -
N/A
app pub date -
Dec 23, 1987
filing date -
Dec 23, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A unitary, multiband and dual polarity mobile antenna (A) is disclosed for vehicles and the like which includes a television antenna (B) having a horizontally polarized radiation pattern and a 2-way communications antenna (C) having a vertically polarized radiation pattern. A null current point (50) is created on communications antenna (C) by a phasing coil (34) which is intersected by a horizontal plane (52) in which television antenna (B) lies. This reduces cross-coupling, cross-polarization, and interference between the two antenna during operation. Horizontal television antenna (B) includes a J-folded, generally boomerang shaped, curved antenna configured to have a radiating element (20) and a half radiating element (22). These elements together form a third radiating element providing operation at three resonant frequencies.
First Claim
Family
International Classification(s)
Cited Art Landscape
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