Adaptive array antenna used in multi-carrier wave radio communications
First Claim
1. An adaptive array antenna comprising:
- antenna elements which receive radio waves transmitted via a multi-carrier transmission system;
weighting circuits which weight received signals output from said antenna elements;
an adder which adds up weighted signals output from said weighting circuits;
an extractor which extracts only components of a first carrier from said received signals; and
a weight setting circuit which sets weights for the respective antenna elements outputting received signals to said weighting circuits based upon the components extracted by said extractor.
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Abstract
According to the present invention, there is provided an adaptive array antenna including a plurality of antenna elements for receiving radio waves transmitted via multi-carrier waves, weighting means for weighting received signals received by the plurality of antenna elements with weight amounts for the respective antenna elements, adding means for adding up weighted signals by the weighting means, extracting means for extracting particular carrier components from the received signals received by the plurality of antenna elements, and weight setting means for setting the weight amounts for the respective antenna elements to the weighting means on the basis of the particular carrier components extracted by the extracting means.
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Citations
17 Claims
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1. An adaptive array antenna comprising:
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antenna elements which receive radio waves transmitted via a multi-carrier transmission system; weighting circuits which weight received signals output from said antenna elements; an adder which adds up weighted signals output from said weighting circuits; an extractor which extracts only components of a first carrier from said received signals; and a weight setting circuit which sets weights for the respective antenna elements outputting received signals to said weighting circuits based upon the components extracted by said extractor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification