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Adaptive antenna device operable in accordance with different algorithms

  • US 6,509,865 B2
  • Filed: 02/09/2001
  • Issued: 01/21/2003
  • Est. Priority Date: 02/10/2000
  • Status: Expired due to Term
First Claim
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1. An adaptive antenna device which comprises a plurality of antenna arrays and a base station apparatus coupled to the antenna arrays, each of the antenna arrays having a plurality of antenna elements spatially arranged, the base station apparatus comprising:

  • combining means for forming a directivity pattern which is combined by varying an amplitude and a phase of each radio signal received by and transmitted from the antenna elements so that radio energy is increased towards a designated direction of a communication radio wave and is canceled toward a range and a direction of a jamming wave;

    the combining means comprising;

    beam steering antenna pattern control means for forming a narrow beam to control an antenna gain so that a maximum portion of the antenna gain is directed to a received direction of the communication radio wave;

    null steering antenna pattern control means for carrying out a control operation such that an antenna gain has a null portion directed toward a received direction of the jamming wave and concurrently has a high gain portion of the antenna gain directed toward the received direction of the communication radio wave; and

    weighting means for weighting a received signal in accordance with a beam obtained by the beam steering antenna pattern control and with a beam obtained by the null steering antenna steering control, wherein the combining means forms said combining directivity pattern for transmitting by simultaneously combining said narrow beam from said beam steering antenna pattern control means and said antenna gain from said null steering antenna pattern control means in accordance with an evaluation function determined in relation to reception.

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