Antenna device, wireless communication apparatus using the same, and control method of controlling wireless communication apparatus
First Claim
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1. An antenna device comprising:
- semi-conductive antenna bodies each having a predetermined length, said antenna bodies being positioned on a dielectric substrate; and
control electrodes that are respectively connected with the semi-conductive antenna bodies, wherein direct-current biased voltage that is applied across each of the control electrodes is controlled to switch each of the semi-conductive antenna bodies between their insulation state and their conductive state.
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Abstract
An antenna device has semi-conductive antenna bodies each having a predetermined length, which are positioned on a dielectric substrate, and control electrodes that are respectively connected with the semi-conductive antenna bodies. Direct-current biased voltage applied across each of the control electrodes is controlled to switch each of the antenna bodies between their insulation state and their conductive state.
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Citations
30 Claims
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1. An antenna device comprising:
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semi-conductive antenna bodies each having a predetermined length, said antenna bodies being positioned on a dielectric substrate; and
control electrodes that are respectively connected with the semi-conductive antenna bodies, wherein direct-current biased voltage that is applied across each of the control electrodes is controlled to switch each of the semi-conductive antenna bodies between their insulation state and their conductive state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A wireless communication apparatus comprising:
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an antenna device;
a reception-and-transmission circuit that transmits and receives a signal according to a predetermined communication system, said reception-and-transmission circuits being connected to the antenna device; and
a communication control unit that controls the antenna device based on a signal received from the reception-and-transmission circuit, wherein the antenna device including;
semi-conductive antenna bodies each having a predetermined length, said antenna bodies being positioned on a dielectric substrate; and
control electrodes that are respectively connected with the semi-conductive antenna bodies, wherein the communication control unit controls direct-current biased voltage applied across each of the control electrodes to switch each of the semi-conductive antenna bodies between their insulation state and their conductive state. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A control method of controlling a wireless communication apparatus that has an antenna device, said antenna device including:
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semi-conductive antenna bodies each having a predetermined length, said antenna bodies being positioned on a dielectric substrate; and
control electrodes that are respectively connected with the semi-conductive antenna bodies, wherein direct-current biased voltage applied across each of the control electrodes is controlled to switch each of the semi-conductive antenna bodies between their insulation state and their conductive state, the method comprising the steps of;
setting the direct-current biased voltage to be applied across each of the control electrodes;
performing a carrier sense by using an omnidirectional antenna that has been formed by the set direct-current biased voltage that is applied across each of the control electrodes;
setting feedback on the direct-current biased voltage that is applied across each of the control electrodes by guiding the carrier sense and a wireless communication condition to a wireless communication apparatus of a destined node; and
adaptively switching directivity, radiated polarization, and radiation direction of the antenna formed by the feedback direct-current biased voltage that is applied across each of the control electrodes. - View Dependent Claims (28)
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29. A program product allowing a computer to carry out a control method of controlling a wireless communication apparatus that has an antenna device, said antenna device including:
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semi-conductive antenna bodies each having a predetermined length, said antenna bodies being positioned on a dielectric substrate; and
control electrodes that are respectively connected with the semi-conductive antenna bodies, wherein direct-current biased voltage applied across each of the control electrodes is controlled to switch each of the semi-conductive antenna bodies between their insulation state and their conductive state, the method comprising the steps of;
setting the direct-current biased voltage to be applied across each of the control electrodes;
performing a carrier sense by using an omnidirectional antenna that has been formed by the set direct-current biased voltage that is applied across each of the control electrodes;
setting feedback on the direct-current biased voltage that is applied across each of the control electrodes by guiding the carrier sense and a wireless communication condition to a wireless communication apparatus of a destined node; and
adaptively switching directivity, radiated polarization, and radiation direction of the antenna formed by the feedback direct-current biased voltage that is applied across each of the control electrodes.
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30. Computer-readable storage medium that stores a program product allowing a computer to carry out a control method of controlling a wireless communication apparatus that has an antenna device, said antenna device including:
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semi-conductive antenna bodies each having a predetermined length, said antenna bodies being positioned on a dielectric substrate; and
control electrodes that are respectively connected with the semi-conductive antenna bodies, wherein direct-current biased voltage applied across each of the control electrodes is controlled to switch each of the semi-conductive antenna bodies between their insulation state and their conductive state, the method comprising the steps of;
setting the direct-current biased voltage to be applied across each of the control electrodes;
performing a carrier sense by using an omnidirectional antenna that has been formed by the set direct-current biased voltage that is applied across each of the control electrodes;
setting feedback on the direct-current biased voltage that is applied across each of the control electrodes by guiding the carrier sense and a wireless communication condition to a wireless communication apparatus of a destined node; and
adaptively switching directivity, radiated polarization, and radiation direction of the antenna formed by the feedback direct-current biased voltage that is applied across each of the control electrodes.
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Specification