Adaptive antenna unit and terminal equipment
First Claim
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1. An adaptive antenna unit comprising:
- a plurality of feeding antenna elements arranged so as to reduce spatial correlations thereof;
a plurality of parasitic antenna elements, provided with respect to each of the plurality of feeding antenna elements, and arranged so as to increase mutual coupling between a corresponding one of the plurality of feeding antenna elements;
a plurality of variable reactance elements, each terminating a corresponding one of the plurality of parasitic antenna elements; and
a control section controlling reactances of the plurality of reactance elements and controlling weighting of the reception signals received by the plurality of feeding antenna elements, in response to the reception signals.
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Abstract
An adaptive antenna unit includes feeding antenna elements arranged so as to reduce spatial correlations thereof, parasitic antenna elements, provided with respect to each of the feeding antenna elements and arranged so as to increase mutual coupling between a corresponding one of the feeding antenna elements, variable reactance elements each terminating a corresponding one of the parasitic antenna elements, and a control section. The control section controls reactances of the reactance elements and controls weighting of the reception signals received by the feeding antenna elements, in response to the reception signals.
144 Citations
17 Claims
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1. An adaptive antenna unit comprising:
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a plurality of feeding antenna elements arranged so as to reduce spatial correlations thereof;
a plurality of parasitic antenna elements, provided with respect to each of the plurality of feeding antenna elements, and arranged so as to increase mutual coupling between a corresponding one of the plurality of feeding antenna elements;
a plurality of variable reactance elements, each terminating a corresponding one of the plurality of parasitic antenna elements; and
a control section controlling reactances of the plurality of reactance elements and controlling weighting of the reception signals received by the plurality of feeding antenna elements, in response to the reception signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A terminal equipment comprising:
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an adaptive antenna unit; and
transmitting and receiving means for making a communication via the adaptive antenna unit, said adaptive antenna unit comprising;
a plurality of feeding antenna elements arranged so as to reduce spatial correlations thereof;
a plurality of parasitic antenna elements, provided with respect to each of the plurality of feeding antenna elements, and arranged so as to increase mutual coupling between a corresponding one of the plurality of feeding antenna elements;
a plurality of variable reactance elements, each terminating a corresponding one of the plurality of parasitic antenna elements; and
a control section controlling reactances of the plurality of reactance elements and controlling weighting of the reception signals received by the plurality of feeding antenna elements, in response to the reception signals.
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11. An adaptive antenna unit comprising:
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a plurality of array antenna sections provided at a pitch greater than a predetermined distance;
a weighting control section weighting and combining output signals of the plurality of array antenna sections; and
a controller generating control signals based on the output signals of the plurality of array antenna sections, wherein each of the plurality of array antenna sections comprises;
a plurality of antenna elements arranged at a pitch smaller than the predetermined distance;
a phase shift part to adjust relative phases of reception signals received by the plurality of antenna elements in response to the control signals; and
a combining circuit to combine the reception signals obtained via the phase shift section and outputting the output signal. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A terminal equipment comprising:
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an adaptive antenna unit; and
transmitting and receiving means for making a communication via the adaptive antenna unit, said adaptive antenna unit comprising;
a plurality of array antenna sections provided at a pitch greater than a predetermined distance;
a weighting control section weighting and combining output signals of the plurality of array antenna sections; and
a controller generating control signals based on the output signals of the plurality of array antenna sections, wherein each of the plurality of array antenna sections comprises;
a plurality of antenna elements arranged at a pitch smaller than the predetermined distance;
a phase shift part to adjust relative phases of reception signals received by the plurality of antenna elements in response to the control signals; and
a combining circuit to combine the reception signals obtained via the phase shift section and outputting the output signal.
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Specification