Adaptive array antenna receiving apparatus and antenna array calibration method
First Claim
1. An adaptive array antenna receiving apparatus comprising:
- a plurality of antenna elements that receives a communication traffic signal transmitted by a communication partner;
an amplitude-phase information acquiring section that acquires information about a variation of the amplitude and phase of each of communication traffic signals received by said plurality of antenna elements with respect to the amplitude and phase at the time when received by said antenna elements;
a received power measuring section that measures a received power of said communication traffic signal for each said antenna element;
a correction value control section that adaptively determines, based on said received power, a correction value for correcting for the variation of the amplitude and phase of said communication traffic signal; and
a correcting section that corrects for said variation by using said correction value.
1 Assignment
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Accused Products
Abstract
An amplitude-phase information acquiring section 105 acquires information indicating variation in amplitude and phase, using a probe signal that suffers the same variation in amplitude and phase as a communication traffic signal received by antennas suffers, between each antenna and the amplitude-phase information acquiring section 105. A received power measuring section 106 measures the received power of the communication traffic signal and the probe signal. A correction value control section 107 adaptively determines, based on the amplitude-phase information and the received power, a correction value for correcting for the variation of the amplitude and phase of the communication traffic signal. A correcting section 108, for each antenna, corrects for the variation of the amplitude and phase of the communication traffic signal by using the correction value determined based on the received power. By this means, it is possible to correct for the amplitude-phase characteristic difference due to variations of input power levels for the electronic elements and thus provide an adaptive array antenna receiving apparatus that performs accurate directivity control.
70 Citations
8 Claims
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1. An adaptive array antenna receiving apparatus comprising:
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a plurality of antenna elements that receives a communication traffic signal transmitted by a communication partner;
an amplitude-phase information acquiring section that acquires information about a variation of the amplitude and phase of each of communication traffic signals received by said plurality of antenna elements with respect to the amplitude and phase at the time when received by said antenna elements;
a received power measuring section that measures a received power of said communication traffic signal for each said antenna element;
a correction value control section that adaptively determines, based on said received power, a correction value for correcting for the variation of the amplitude and phase of said communication traffic signal; and
a correcting section that corrects for said variation by using said correction value. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An antenna-array correcting method comprising the steps of:
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measuring a received power of each of communication traffic signals received by a plurality of antenna elements;
adaptively determining, based on said received power, a correction value for correcting for a variation of amplitude and phase of each of the communication traffic signals with respect to those at the time when received by the antenna elements; and
correcting for the variation of amplitude and phase of said communication traffic signal by using the correction value determined based on said received power.
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Specification