Planar Antenna Arrangement
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United States of America Patent
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Jun 14, 2005
Issued Date -
N/A
app pub date -
Jul 25, 2003
filing date -
Jul 25, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An antenna arrangement for use over a metallic surface in motor vehicles is adapted to improve reception in the AM frequency range. An FM loop includes two conductor sections separated by a capacitor. An AM probe extends from one of the conductor sections near an antenna feed line connector and isolates AM signals by an L-C circuit between the probe and the connection to the conductor section. Omnidirectional reception is achieved by a coplanar WB probe, FM probe and AM coiled loop between them, mounted to a substrate.
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