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Apparatus and method for calibrating reception signal in mobile communication system

  • US 6,940,453 B2
  • Filed: 04/12/2004
  • Issued: 09/06/2005
  • Est. Priority Date: 04/29/2003
  • Status: Expired due to Fees
First Claim
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1. An apparatus for calibrating a reception signal of an array antenna in a mobile communication system, comprising:

  • a reference signal generator which outputs a plurality of reference signals having same phases, by calibrating a phase of a locally generated signal; and

    an antenna array which receives a radio signal through a plurality of antenna paths by a plurality of reference signals, and calibrating distortion of each array antenna path, wherein the reference signal generating unit comprises;

    a splitter which divides an RF signal into as many signals as a number of antennas in the array;

    a phase detector which detects phase information of the divided signals; and

    a phase shifter which uniformly controls phases of the divided signals based on the phase information.

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