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Antenna Control Device, Reception Device, And Antenna Control Method

  • US 20110001667A1
  • Filed: 01/22/2009
  • Published: 01/06/2011
  • Est. Priority Date: 01/31/2008
  • Status: Abandoned Application
First Claim
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1. An antenna control device for a communication device that includes:

  • an antenna portion that has an antenna which performs radio communication of a signal; and

    a signal conversion portion that is connected to the antenna portion via a signal line and converts a signal;

    the antenna control device comprising;

    a direct-current power supply that is disposed in the signal conversion portion and supplies a direct-current voltage;

    a switch portion that is disposed in the signal conversion portion and switches connection between the direct-current power supply and the signal line, thereby applying a direct-current voltage that has either voltage value of a first positive voltage value and a second negative voltage value to the signal line; and

    an antenna switch portion that is disposed in the antenna portion and switches a characteristic of the antenna;

    wherein based on a voltage value of the direct-current voltage applied to the signal line, the antenna switch portion switches the characteristic of the antenna.

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