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MULTI-BAND COMMUNICATION SYSTEM WITH ISOLATION AND IMPEDANCE MATCHING PROVISION

  • US 20130278477A1
  • Filed: 12/17/2012
  • Published: 10/24/2013
  • Est. Priority Date: 04/20/2012
  • Status: Active Grant
First Claim
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1. A communication system comprising:

  • an antenna comprising a plurality of feeds coupled to a plurality of first paths, respectively, each first path configured to process signals in a group of frequency bands;

    one or more matching networks, each coupled to one or more of the plurality of first paths;

    a plurality of switches coupled to the plurality of first paths on one side and a plurality of second paths on the other side, each switch configured to engage one of the plurality of second paths according to a frequency band selected from the group of frequency bands corresponding to the first path coupled to the switch;

    a controller configured to control the one or more matching networks and the plurality of switches; and

    a look-up table coupled to the controller, the look-up table including characterization data according to frequency bands and conditions,whereinthe plurality of feeds are configured to provide isolation and a first-order impedance matching for the plurality of first paths; and

    each of the one or more matching networks is controlled by the controller to provide optimum impedance for the frequency band selected and under a condition detected during a time interval.

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