Isolation enhancement between planar antenna elements
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United States of America Patent
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Oct 15, 2013
Grant Date -
Mar 21, 2013
app pub date -
Aug 21, 2012
filing date -
Sep 21, 2011
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Abstract
An antenna system for creating mutual radiation isolation between planar antenna elements over a narrow band uses field cancellation. Adjacent planar antenna elements are positioned in a common ground plane within a mobile phone repeater station, A tuned slot element is positioned between the antenna elements and coupled to share ground plane current in order to maximize cancellation and minimize degradation of the radiation of the antenna elements. The dimensions of the toned slot element are adjusted to obtain lambda/2 resonance, whereby, isolation of more than 10 dB is attained between the antenna elements.
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