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Antenna receiver in which carrier-to-noise ratio of demodulation signal is improved

  • US 20030008630A1
  • Filed: 07/02/2002
  • Published: 01/09/2003
  • Est. Priority Date: 07/05/2001
  • Status: Active Grant
First Claim
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1. An antenna receiver comprising:

  • a plurality of mixers for frequency-converting signals received by a plurality of antennas into intermediate-frequency signals;

    a plurality of local oscillators, which correspond to the plurality of mixers and which supply local oscillation signals having the same frequency to the mixers;

    a plurality of PLL circuits, which correspond to the plurality of local oscillators and which set the frequency of the local oscillation signals; and

    an adder for adding the intermediate-frequency signals output from the mixers, wherein the phases of reference signals supplied to the PLL circuits can be changed independently from each other.

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