Antenna apparatus, printed wiring board, printed circuit board, communication adapter and portable electronic equipment
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United States of America Patent
Stats
-
Sep 20, 2005
Grant Date -
Jun 24, 2004
app pub date -
Sep 12, 2003
filing date -
Sep 12, 2002
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An antenna apparatus is provided that includes a printed wiring board, electronic components disposed on the printed wiring board, a shielding member (ground member) that is disposed on the printed wiring board. The shielding member has a length along a predetermined directional axis X set substantially to ¼λ or more, the wavelength of an electromagnetic wave used for communication being λ. An antenna element extends in a direction crossing the directional axis X and is grounded to the shielding member (ground member).
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