Methods for reducing near-field radiation and specific absorption rate (SAR) values in communications devices
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United States of America Patent
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Jun 13, 2017
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app pub date -
Apr 8, 2016
filing date -
Apr 20, 2007
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Abstract
A method is provided introducing a phase offset between signals applied to antenna ports of an antenna having multiple antenna elements, such that a first signal applied to one of the antenna ports operatively coupled to one of the antenna elements has a different phase than a second signal applied to another one of antenna ports operatively coupled to another one of the antenna elements to obtain an antenna pattern control. A reduced power is used that is lower than the power used in a non-pattern control operation of the antenna such that a wireless link performance criteria is met with equipment at a far-field point using the reduced power compared to the non-pattern control operation, thereby reducing near field radiation.
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