Compact, broadband inverted-F antennas with conductive elements and wireless communicators incorporating same
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United States of America Patent
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Apr 17, 2001
Grant Date -
N/A
app pub date -
Feb 24, 2000
filing date -
Feb 24, 2000
priority date (Note) -
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Abstract
Inverted-F antennas having elongated, conductive elements for use within communications devices, such as radiotelephones, are provided. An elongated, meandering conductive element having a plurality of spaced-apart U-shaped undulations is maintained in adjacent, spaced-apart relationship with a first ground plane. One or more of the U-shaped undulations capacitively couple to the ground plane and allow the antenna to resonate at lower frequencies and with a greater bandwidth. A second ground plane may be oriented in a direction transverse to the first ground plane so as to be positioned in adjacent, spaced-apart relationship with one or more of the U-shaped undulations. One or more of the U-shaped undulations can capacitively couple to the second ground plane, as well as to the first ground plane. In addition, one or more inductive elements may be electrically connected to an elongated conductive element.
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