Diversity antenna for radio communications
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United States of America Patent
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-
Jun 9, 1998
Grant Date -
N/A
app pub date -
Mar 7, 1995
filing date -
Mar 7, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A diversity antenna for radio communications including a pair of conductive thin-film patterns used for a first antenna and another pair of conductive thin-film patterns used for a second antenna, the thin-film patterns being installed on a printed circuit board along the direction of the length of the circuit board; a first choke coil which is used to stop a leakage current from the first antenna and cause attenuation of a coupling current from the second antenna, the first choke coil being installed at a location where the leakage current distribution of the first antenna reaches the maximum in a feeder cable connected to the first antenna; and a second choke coil which is used to stop the leakage current from the second antenna, the second choke coil being installed at a location where the leakage current distribution of the second antenna reaches the maximum in a feeder cable for the second antenna.
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