Planar inverted "F" antenna and method of tuning same
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United States of America Patent
Stats
-
Mar 18, 2008
Grant Date -
Feb 23, 2006
app pub date -
Aug 20, 2004
filing date -
Aug 20, 2004
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A multiband planar inverted F antenna (PIFA) can provide improved performance and operating efficiency, and utilizes a capacitive element configured to provide high efficiency operation, and a tuning area that allows the antenna to be tuned independently of the capacitive element. As a result of this feature, the antenna can be tuned to the desired operating frequencies, while allowing the capacitive element to remain configured for optimal operating efficiency. The antenna can be configured in a loop for effective utilization of a given volume and can therefore be relatively small in size and high efficiency. A capacitive loading section can be included to allow improved antenna efficiency and radiation. Additionally, tuning section can be provided to allow the antenna to be tuned without adjusting the capacitive loading section. To obtain operation at an additional frequency band, a parasitic element or a slot configuration can be included.
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