Dual-band inverted-F antenna with shorted parasitic elements
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United States of America Patent
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May 23, 2006
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app pub date -
Jan 26, 2005
filing date -
Jan 30, 2004
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Abstract
The invention relates to a dual-band inverted-F antenna with shorted parasitic elements. The antenna of the invention comprises a ground plane, a first radiating arm placed above an edge of the ground plane, a second radiating arm placed above the edge of the ground plane, a shorting arm with a substantially inverted-L shape for electrically connecting the first radiating arm and the second radiating arm to the ground plane, a shorted parasitic arm placed above the edge of the ground plane, and a feeding coaxial cable for transmitting signals. There is a distance between the shorted parasitic arm and the first radiating arm so as to induce extra capacitive reactance to compensate the inductive reactance induced by inserting the feeding coaxial cable. The present invention is suitable for the wireless local area network (WLAN) applications in the 2.4 GHz (2.4 2.484 GHz) and 5 GHz (5.15 5.35, 5.725 5.875 GHz) bands.
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