Dielectric waveguide device, phase shifter, high frequency switch, and attenuator provided with dielectric waveguide device, high frequency transmitter, high frequency receiver, high frequency transceiver, radar device, array antenna, and method of manufacturing dielectric waveguide device
First Claim
1. A dielectric waveguide device comprising:
- a transmission line comprising a dielectric part including a variable part, which varies in at least one of a dielectric constant and a dimension of the variable part in accordance with an applied electric field, and that is configured to propagate an electromagnetic wave; and
an electrode thinner than a skin depth for the frequency of the electromagnetic wave propagating along the transmission line, and that is embedded in the dielectric part, the electrode configured to apply the electric field to the variable part.
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Accused Products
Abstract
The invention relates to a small and low-voltage operable dielectric waveguide device. First and second electrode are embedded in a dielectric part and are formed to be thinner than a skin depth for a frequency of electromagnetic wave propagating along a first dielectric part included in the dielectric part. Thereby, even if the first and second electrodes are arranged to be in contact with the first dielectric part, the propagating electromagnetic wave can transmit the first and second electrodes, and therefore the electromagnetic wave can propagate without being cut off and there is no influence on waveguide modes of the electromagnetic wave. Further, in a state where a transmission loss due to the embedded of the electrode is suppressed, an electric field with large electric field strength can be applied to the first dielectric part by the first and second electrodes, and a small and low-voltage operable dielectric waveguide device can be achieved.
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Citations
30 Claims
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1. A dielectric waveguide device comprising:
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a transmission line comprising a dielectric part including a variable part, which varies in at least one of a dielectric constant and a dimension of the variable part in accordance with an applied electric field, and that is configured to propagate an electromagnetic wave; and an electrode thinner than a skin depth for the frequency of the electromagnetic wave propagating along the transmission line, and that is embedded in the dielectric part, the electrode configured to apply the electric field to the variable part. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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17. A dielectric waveguide tube device comprising:
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a dielectric part comprising a variable part, which varies in at least one of a dielectric constant and a dimension of the variable part in accordance with an applied electric field, and that propagates electromagnetic wave; and a conductor part that comprises a pair of electrodes for applying the electric field to the variable part, and surrounds the dielectric part to form a waveguide tube.
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18. A dielectric waveguide device comprising:
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A dielectric part comprises a first dielectric part including a variable park, which varies in at least one of dielectric constant and dimension of the variable part in accordance with an applied electric field, and second dielectric parts, which have a dielectric constant lower than the first dielectric constant of the first dielectric part and between which the first dielectric part is sandwiched; a pair of plate conductor parts between which the dielectric part is sandwiched in a direction perpendicular to a propagation direction of electromagnetic wave propagating along the dielectric part and a lamination direction of the first and second dielectric parts; and a pair of electrodes between which the dielectric part is sandwiched in the lamination direction, and which are spaced from each other at an interval smaller than an interval between the pair of plate conductor parts, the electrodes configured to apply the electric field to the variable part. - View Dependent Claims (19)
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29. A dielectric waveguide device comprising:
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a transmission line comprising a dielectric part including a variable part which varies at least one of a dielectric constant and a dimension of the variable part in accordance with an applied electric field, and that is configure to propagate an electromagnetic wave; and an electrode thinner than a skin depth for the frequency of the electromagnetic wave propagating along the transmission line, and that is embedded in the dielectric part, the electrode configure to apply the electric field to the variable part, wherein a ratio of fc and f satisfies the condition 1.03<
f/fc<
1.5, where fc is a cutoff frequency and f is the frequency of electromagnetic wave propagating along the dielectric waveguide in a case where a prescribed voltage is applied to the pair of electrodes.
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30. A dielectric waveguide tube device comprising:
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a dielectric part comprising a variable part which varies at least one of a dielectric constant and a dimension of the variable part in accordance with an applied electric field, and that is configured to propagate an electromagnetic wave; and a conductor part comprising a pair of electrodes configured to apply the electric field to the variable part, and surrounds the dielectric part to form a waveguide tube, wherein the dielectric part further comprises second dielectric parts between which the variable part is sandwiched and which have a lower dielectric constant than the variable part, and wherein the electrode is between the variable part and the second dielectric parts.
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Specification