MOBILE COMMUNICATION CIRCUITRY FOR THREE OR MORE ANTENNAS
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United States of America Patent
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Issued Date -
Jun 19, 2014
app pub date -
Dec 18, 2013
filing date -
Dec 18, 2012
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Abstract
Communication circuitry is disclosed that is capable of switching between three or more antennas while providing low harmonic interference during carrier aggregation. In one embodiment, a communication system includes a first switch with two poles and four throws, a second switch with two poles and four throws, and four diplexers associated with four antennas. In a second embodiment, the communication system includes a first switch with three poles and three throws, a second switch with three poles and three throws, and three diplexers associated with three antennas. In the second embodiment, the second switch may have a third pole associated with non-cellular signals such as GPS and WiFi, and one or more of the diplexers may be tunable, for example to efficiently pass 1.575 GHz for GPS signals.
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