Smart Antenna for Wireless Communications
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United States of America Patent
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Issued Date -
Sep 26, 2013
app pub date -
Sep 27, 2011
filing date -
Sep 27, 2010
priority date (Note) -
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Abstract
A smart antenna includes a plurality of parasitic antenna elements provided with varactors, a voltage supply arranged to be coupled to the varactors and operable to supply a DC voltage, and a control unit operable to tune DC voltages applied to the varactors, wherein each parasitic antenna element can be reconfigured either as a reflector or a director on the basis of the voltage applied thereto. The driven element is surrounded by first and second 10 annular arrays of parasitic elements at radii of substantially 25 and 50 mm respectively, each annular array including six antenna elements. The array is configurable for steering the beam. The arrangement is compact and efficient.
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