Polarization diversity antenna system for cellular telephone
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United States of America Patent
Stats
-
Mar 25, 2003
Grant Date -
Feb 21, 2002
app pub date -
Oct 17, 2001
filing date -
May 19, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Radio communication systems, e.g. cellular telephones, have employed a space diversity antenna system which includes a plurality of antennas. In the space diversity antenna system for use in the cellular telephone, since two antennas are positioned adjoining each other, the space diversity effect cannot be adequately provided. To solve this problem, the polarization diversity antenna system according to this invention incorporates a first antenna, a second antenna, and a conductive board on which the second antenna is fixed at a given position, thus preventing the current flowing in the conductive board from causing the reception characteristic of the second antenna to deteriorate.
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Family
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