Compact antenna with directed radiation pattern
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United States of America Patent
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Feb 27, 2007
Grant Date -
May 25, 2006
app pub date -
Jul 1, 2005
filing date -
Nov 22, 2004
priority date (Note) -
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Abstract
The present invention includes a balanced compact antenna, conforming to the envelope restrictions appropriate to a PC-card form factor, with maximum radiation intensity along a long axis of the card. The inventive antenna configuration employs an inductive shorting bar to match an 'M'-shaped bent dipole antenna to a differential feed. The combination of horizontal cross-members and large vertical downward legs ensures radiation predominantly in a broadside direction while keeping the dimensions of the antenna sufficiently compact to fit within the PC-card envelope.
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