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Antenna system with antenna swapping and antenna tuning

  • US 9,806,401 B2
  • Filed: 01/28/2015
  • Issued: 10/31/2017
  • Est. Priority Date: 11/05/2010
  • Status: Active Grant
First Claim
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1. An electronic device, comprising:

  • a housing having conductive structures that form an antenna ground and having peripheral conductive housing structures that run around at least four edges of the housing;

    a loop antenna that is formed from the antenna ground and a first segment of the peripheral conductive housing structures;

    an inverted-F antenna that is formed form the antenna ground and a second segment of the peripheral conductive housing structures;

    radio-frequency transceiver circuitry having first and second ports;

    switching circuitry that is operable in a first mode in which the loop antenna is coupled to the first port and the inverted-F antenna is coupled to the second port and that is operable in a second mode in which the loop antenna is coupled to the second port and the inverted-F antenna is coupled to the first port, wherein the radio-frequency transceiver circuitry is configured to;

    transmit and receive radio-frequency signals through the loop antenna in a plurality of cellular telephone communications bands during the first mode; and

    only receive radio-frequency signals through the inverted-F antenna in a subset of the plurality of cellular telephone communications bands during the first mode.

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