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RADIO FREQUENCY SYSTEMS WITH TRANSMIT AND RECEIVE ISOLATION

  • US 20170026074A1
  • Filed: 10/06/2016
  • Published: 01/26/2017
  • Est. Priority Date: 04/12/2012
  • Status: Active Grant
First Claim
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1. A wireless device comprising:

  • a power amplifier including a power amplifier output configured to provide a transmit signal;

    one or more duplexers including a first duplexer associated with a first frequency band;

    a plurality of antennas including a first antenna and a second antenna;

    a plurality of switches configured to selectively connect the power amplifier output to the first antenna via a selected path chosen from a plurality of signal paths, the plurality of signal paths including a first signal path through the first duplexer and a duplexer bypass path that bypasses the one or more duplexers; and

    an isolation detection system configured to control the selected path of the plurality of switches based on detecting an amount of antenna coupling between the first antenna and the second antenna.

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