Radio wave control board and composite resonator

Abstract

The radio wave control board includes: a plurality of unit structures arranged in a first surface direction; and a reference conductor that serves as a reference potential for the plurality of unit structures. The plurality of unit structures include: a first resonator extending in the first surface direction; and a second resonator separated from the first resonator in the first direction and expanding in the first surface direction. At least one of the first resonator and the second resonator includes: a first electrode extending in a first surface direction; a second electrode separated from the first electrode in the first direction and expanding in the first surface direction; and a liquid crystal layer disposed between the first electrode and the second electrode and expanding in the first surface direction.

Description

Technical Field

[0001] The present disclosure relates to an electric wave control panel and a composite resonator. Background Art

[0002] There is known a technique for controlling electromagnetic waves without using a dielectric lens. For example, Patent Document 1 describes a technique for refracting electromagnetic waves by changing the parameters of each element in a structure in which resonator elements are arranged.

[0003] Prior Art Literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2015-231182 Summary of the invention

[0006] The radio wave control panel disclosed in the present invention includes: a plurality of unit structures arranged in a first surface direction; and a reference conductor which serves as a reference potential of the plurality of unit structures, the plurality of unit structures including: a first resonator extending in the first surface direction; and a second resonator separated from the first resonator in the first direction and extending in the first surface direction, at least one of the first resonator and the second resonator includes: a first electrode extending in the first surface direction; a second electrode separated from the first electrode in the first direction and extending in the first surface direction; and a liquid crystal layer arranged between the first electrode and the second electrode and extending in the first surface direction.

[0007] The composite resonator disclosed in the present invention includes: a first resonator extending in a first surface direction; and a second resonator separated from the first resonator in the first direction and extending in the first surface direction, wherein at least one of the first resonator and the second resonator includes: a first electrode extending in the first surface direction; a second electrode separated from the first electrode in the first direction and extending in the first surface direction; and a liquid crystal layer arranged between the first electrode and the second electrode and extending in the first surface direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a diagram for explaining the outline of the radio wave refraction plate according to the first embodiment.

[0009] Figure 2 It is a diagram showing a configuration example of a unit structure according to the first embodiment.

[0010] Figure 3A It is a diagram for explaining a configuration example of a first resonator according to the first embodiment.

[0011] Figure 3B It is a diagram for explaining a configuration example of a first resonator according to the first embodiment.

[0012] Figure 4A It is a diagram for explaining a configuration example of the second resonator according to the first embodiment.

[0013] Figure 4B It is a diagram for explaining a configuration example of the second resonator according to the first embodiment.

[0014] Figure 5 It is a diagram for explaining a configuration example of a reference conductor according to the first embodiment.

[0015] Fig. 6A It is a diagram for explaining a configuration example of a first resonator according to a modification example of the first embodiment.

[0016] Figure 6B It is a diagram for explaining a configuration example of a first resonator according to a modification example of the first embodiment.

[0017] Figure 7 It is a diagram showing a configuration example of a unit structure according to the second embodiment.

[0018] Figure 8 It is a diagram showing an example of arrangement of unit structures according to the third embodiment.

[0019] Fig. 9 This is a diagram for explaining a method of applying a voltage to the unit structure according to the third embodiment.

[0020] Fig.10 It is a diagram showing a structural example of a unit structure involved in the fourth embodiment.

[0021] Fig.11 It is a diagram showing a configuration example of a unit structure according to a modification of the fourth embodiment.

[0022] Fig.12 It is a diagram showing an example of arrangement of unit structures according to the fourth embodiment.

[0023] Fig.13 This is a diagram for explaining a method of applying a voltage to a unit structure according to the fourth embodiment. DETAILED DESCRIPTION

[0024] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The present invention is not limited to the embodiments, and in the following embodiments, the same parts are given the same reference numerals to omit repeated descriptions.

[0025] In the following description, an XYZ orthogonal coordinate system is set, and the positional relationship of each part is described while referring to the XYZ orthogonal coordinate system. The direction parallel to the X axis in the horizontal plane is set as the X axis direction, the direction parallel to the Y axis in the horizontal plane orthogonal to the X axis is set as the Y axis direction, and the direction parallel to the Z axis orthogonal to the horizontal plane is set as the Z axis direction. In addition, the plane containing the X axis and the Y axis is appropriately referred to as the XY plane, the plane containing the X axis and the Z axis is appropriately referred to as the XZ plane, and the plane containing the Y axis and the Z axis is appropriately referred to as the YZ plane. The XY plane is parallel to the horizontal plane. The XY plane, the XZ plane, and the YZ plane are orthogonal.

[0026] [First embodiment]

[0027] (Radio wave refraction plate)

[0028] use Figure 1 The outline of the radio wave refraction plate according to the first embodiment will be described. Figure 1 It is a diagram for explaining the outline of the radio wave refraction plate according to the first embodiment.

[0029] The radio wave refraction plate 1 is a plate-shaped member configured to transmit radio waves transmitted by the base station. The radio wave refraction plate 1 is configured, for example, to refract the radio waves at a given angle and emit them when receiving radio waves transmitted by the base station. The radio wave refraction plate 1 may contain, for example, a metamaterial that changes the phase of the incident wave. The radio wave refraction plate 1 is a type of radio wave control plate.

[0030] like Figure 1 As shown, the radio wave refraction plate 1 can include, for example, a substrate 2 , a unit structure 10 a , a unit structure 10 b , a unit structure 10 c , and a unit structure 10 d .

[0031] The unit structures 10a, 10b, 10c, and 10d can be formed on a substrate 2. The substrate 2 can have a rectangular shape, for example, but is not limited thereto. The unit structures 10a, 10b, 10c, and 10d can be arranged two-dimensionally on the substrate 2.

[0032] Specifically, in the substrate 2, a plurality of unit structures 10a can be arranged in a row in the bottom layer of the substrate 2. In the substrate 2, a plurality of unit structures 10b can be arranged in a row in a layer above the layer having the unit structure 10a. In the substrate 2, a plurality of unit structures 10c can be arranged in a row in a layer above the layer having the unit structure 10b. In the substrate 2, a plurality of unit structures 10d can be arranged in a row in a layer above the layer having the unit structure 10c. That is, the radio wave refracting plate 1 can have a structure in which a plurality of unit structures of different sizes are periodically arranged. The frequency band and the amount of change in the phase of the radio wave to be changed can be made different in the unit structures 10a to 10d. The unit structures 10a to 10d each have a rectangular shape, but are not limited thereto. By changing the size and shape of the unit structures 10a, 10b, 10c, and 10d, the amount of change in the frequency band and the phase of the radio wave to be refracted can be adjusted.

[0033] (Unit structure)

[0034] use Figure 2 A configuration example of the unit structure according to the first embodiment will be described. Figure 2 It is a diagram showing a configuration example of a unit structure according to the first embodiment.

[0035] like Figure 2 As shown, the unit structure 10 includes a first resonator 12, a second resonator 14, and a reference conductor 16. The unit structure 10 can also be called a composite resonator.

[0036] The first resonator 12 can be arranged in parallel in the substrate 2 so as to extend in the XY plane. The first resonator 12 includes a conductor. The first resonator 12 can be formed into a rectangular shape, for example. The shape of the first resonator 12 is not limited to a rectangular shape. The shape of the first resonator 12 can be arbitrarily changed according to the design. The first resonator 12 is configured to resonate by electromagnetic waves received from the +Z axis direction.

[0037] The first resonator 12 is configured to radiate electromagnetic waves when resonating. The first resonator 12 is configured to radiate electromagnetic waves toward the -Z axis direction when resonating.

[0038] The second resonator 14 can be arranged in the substrate 2 so as to extend in the XY plane at a position separated from the first resonator 12 in the Z-axis direction. The second resonator 14 can be formed, for example, in a rectangular shape. The shape of the second resonator 14 is not limited to a rectangular shape. The shape of the second resonator 14 can be arbitrarily changed according to the design. The shape of the second resonator 14 can be the same as or different from the shape of the first resonator 12. The area of ​​the second resonator 14 can be the same as or different from that of the first resonator 12.

[0039] The second resonator 14 is configured to radiate electromagnetic waves when resonating. For example, the second resonator 14 is configured to radiate electromagnetic waves in the -Z axis direction. The second resonator 14 is configured to radiate electromagnetic waves in the -Z axis direction when resonating. The second resonator 14 is configured to resonate by receiving electromagnetic waves from the +Z axis direction.

[0040] The second resonator 14 may be configured to resonate in a different phase from the first resonator 12. The second resonator 14 may be configured to resonate in a direction different from the resonant direction of the first resonator 12 in the XY plane direction. For example, when the first resonator 12 is configured to resonate in the X-axis direction, the second resonator 14 may be configured to resonate in the Y-axis direction. The resonant direction of the second resonator 14 may be configured to change with time in the XY plane direction in accordance with the time change of the resonant direction of the first resonator 12. The second resonator 14 is configured to radiate electromagnetic waves that attenuate the electromagnetic waves received by the first resonator 12 by the first frequency band.

[0041] The reference conductor 16 can be arranged in parallel between the first resonator 12 and the second resonator 14 in the substrate 2. The reference conductor 16 can be located, for example, at the center of the first resonator 12 and the second resonator 14 in the substrate 2, but the present disclosure is not limited thereto. The reference conductor 16 can be located, for example, at a position where the distance from the first resonator 12 and the distance from the second resonator 14 are different.

[0042] The reference conductor 16 has at least one hole portion. The first resonator 12 and the second resonator 14 are magnetically connected or capacitively connected via the hole portion.

[0043] In the present disclosure, at least one of the first resonator 12 and the second resonator 14 includes a liquid crystal layer. Specifically, at least one of the first resonator 12 and the second resonator 14 includes: a first electrode extending on the XY plane; a second electrode separated from the first electrode in the Z-axis direction and extending on the XY plane; and a liquid crystal layer arranged between the first electrode and the second electrode and extending on the XY plane. In the present disclosure, it is configured so that the capacitance value of the unit structure 10 can be made variable by applying a voltage to the liquid crystal layer. That is, in the present disclosure, by adjusting the capacitance value of the unit structure 10, the refraction direction of the radio wave can be changed. Figure 2 In the illustrated example, both the first resonator 12 and the second resonator 14 include a liquid crystal layer.

[0044] use Figure 3A and Figure 3B A configuration example of the first resonator according to the first embodiment will be described. Figure 3A and Figure 3B It is a diagram for explaining a configuration example of a first resonator according to the first embodiment.

[0045] like Figure 3A and Figure 3B As shown, the first resonator 12 includes a first electrode 31 and a second electrode 32. The first resonator 12 has a structure in which the first electrode 31 and the second electrode 32 overlap each other. A liquid crystal layer (not shown) is disposed between the first electrode 31 and the second electrode 32.

[0046] The first electrode 31 is formed of a conductor. The first electrode 31 is formed in a rectangular frame shape. The first electrode 31 has a protrusion 311 and a protrusion 312. That is, the first electrode 31 has two protrusions.

[0047] The convex portion 311 is provided on the side portion 31a parallel to the Y axis of the first electrode 31. The convex portion 311 is provided to protrude inward from the side portion 31a. A gap is formed between the convex portion 311 and the side portion 31c. A gap is formed between the convex portion 311 and the side portion 31d. That is, the convex portion 311 is provided to be magnetically connected or capacitively connected to the side portions 31c and 31d.

[0048] The convex portion 312 is provided on the side portion 31b parallel to the Y axis of the first electrode 31. The convex portion 312 is provided so as to protrude inward from the side portion 31b. A gap is formed between the convex portion 312 and the side portion 31c. A gap is formed between the convex portion 312 and the side portion 31d. That is, the convex portion 312 is provided so as to be magnetically connected or capacitively connected to the side portion 31c and the side portion 31d. That is, the first electrode 31 is configured as a λ / 4 resonator.

[0049] The second electrode 32 is formed of a conductor. The second electrode 32 is formed in a rectangular frame shape. The second electrode 32 has a convex portion 321 and a convex portion 322. That is, the second electrode 32 has two convex portions.

[0050] The convex portion 321 is provided on the side portion 32c parallel to the X-axis of the second electrode 32. The convex portion 321 is provided to protrude inward from the side portion 32c. A gap is formed between the convex portion 321 and the side portion 32a. A gap is formed between the convex portion 321 and the side portion 32b. The convex portion 321 is provided to be magnetically connected or capacitively connected to the side portions 32a and 32b.

[0051] The convex portion 322 is provided on the side portion 32d parallel to the X-axis of the second electrode 32. The convex portion 322 is provided so as to protrude inward from the side portion 32d. A gap is formed between the convex portion 322 and the side portion 32a. A gap is formed between the convex portion 322 and the side portion 32b. The convex portion 322 is provided so as to be magnetically connected or capacitively connected to the side portion 32a and the side portion 32b. That is, the second electrode 32 is configured as a λ / 4 resonator.

[0052] The first electrode 31 and the second electrode 32 have the same shape. The first electrode 31 and the second electrode 32 are arranged to be rotationally symmetrical in the XY plane direction. Specifically, the second electrode 32 is arranged in a state rotated 90 degrees in the XY plane direction relative to the first electrode 31. The first electrode 31 and the second electrode 32 are arranged so that when viewed from one side, the other side can be regarded as grounded. By using such a unit structure 10, a radio wave refraction plate that can cope with two polarizations can be constructed.

[0053] use Figure 4A and Figure 4B A configuration example of the second resonator according to the first embodiment will be described. Figure 4A and Figure 4B It is a diagram for explaining a configuration example of the second resonator according to the first embodiment.

[0054] like Figure 4A and Figure 4B As shown, the second resonator 14 includes a first electrode 41 and a second electrode 42. The second resonator 14 has a structure in which the first electrode 41 and the second electrode 42 overlap each other. A liquid crystal layer (not shown) is arranged between the first electrode 41 and the second electrode 42.

[0055] The first electrode 41 is formed of a conductor. The first electrode 41 is formed in a rectangular frame shape. The first electrode 41 has a protrusion 411 and a protrusion 412. That is, the first electrode 41 has two protrusions.

[0056] The convex portion 411 is provided on the side portion 41c parallel to the X-axis of the first electrode 41. The convex portion 411 is provided to protrude inward from the side portion 41c. A gap is formed between the convex portion 411 and the side portion 41a. A gap is formed between the convex portion 411 and the side portion 41b. The convex portion 411 is provided to be magnetically connected or capacitively connected to the side portions 41a and 41b.

[0057] The convex portion 412 is provided on the side portion 41d parallel to the X-axis of the first electrode 41. The convex portion 412 is provided so as to protrude inward from the side portion 41d. A gap is formed between the convex portion 412 and the side portion 41a. A gap is formed between the convex portion 412 and the side portion 41b. The convex portion 412 is provided so as to be magnetically connected or capacitively connected to the side portion 41a and the side portion 41b. That is, the first electrode 41 is configured as a λ / 4 resonator.

[0058] The second electrode 42 is formed of a conductor. The second electrode 42 is formed in a rectangular frame shape. The second electrode 42 has a convex portion 421 and a convex portion 422. That is, the second electrode 42 has two convex portions.

[0059] The convex portion 421 is provided on the side portion 42a parallel to the Y axis of the second electrode 42. The convex portion 421 is provided to protrude inward from the side portion 42a. A gap is formed between the convex portion 421 and the side portion 42c. A gap is formed between the convex portion 421 and the side portion 42d. The convex portion 421 is provided to be magnetically connected or capacitively connected to the side portions 42c and 42d.

[0060] The convex portion 422 is provided on the side portion 42b parallel to the Y axis of the second electrode 42. The convex portion 422 is provided to protrude inward from the side portion 42b. A gap is formed between the convex portion 422 and the side portion 42c. A gap is formed between the convex portion 422 and the side portion 42d. The convex portion 422 is provided to be magnetically connected or capacitively connected to the side portion 42c and the side portion 42d. That is, the second electrode 42 is configured as a λ / 4 resonator.

[0061] The first electrode 41 and the second electrode 42 have the same shape. The first electrode 41 and the second electrode 42 are arranged to be rotationally symmetrical in the XY plane direction. Specifically, the second electrode 42 is arranged in a state rotated 90 degrees in the XY plane direction relative to the first electrode 41. The first electrode 41 and the second electrode 42 are arranged so that when viewed from one side, the other side can be regarded as grounded. By using such a unit structure 10, a radio wave refraction plate that can cope with two polarizations can be formed.

[0062] use Figure 5 A configuration example of the reference conductor according to the first embodiment will be described. Figure 5 It is a diagram for explaining a configuration example of a reference conductor according to the first embodiment.

[0063] The reference conductor 16 is formed of a conductor and is formed in a rectangular shape. The reference conductor 16 includes a hole 161 , a hole 162 , a hole 163 , and a hole 164 .

[0064] The holes 161 to 164 are provided to capacitively connect or magnetically connect the first resonator 12 and the second resonator 14. The first resonator 12 and the second resonator 14 are capacitively connected or magnetically connected via the holes 161 to 164.

[0065] Although the first resonator 12 and the second resonator 14 are described as structures in which two λ / 4 resonators are overlapped, the present disclosure is not limited to this.

[0066] use Fig. 6A and Figure 6B A configuration example of a first resonator according to a modification of the first embodiment will be described. Fig. 6A and Figure 6B This is a diagram for explaining a configuration example of a first resonator according to a modification of the first embodiment. Hereinafter, the modification of the first resonator will be described as an example, but the same also applies to the modification of the second resonator.

[0067] Fig. 6A The following is a structural example of the first electrode of the first resonator according to a modification of the first embodiment. The first electrode 31-1 is formed of a conductor. The first electrode 31-1 is formed in a rectangular frame shape. The first electrode 31-1 has a convex portion 311-1. That is, the first electrode 31-1 has one convex portion.

[0068] The convex portion 311-1 is provided on the side portion 31c-1 parallel to the X-axis of the first electrode 31-1. The convex portion 311-1 is provided so as to protrude inward from the side portion 31c-1. In the first electrode 31-1, the convex portion is not provided on the side portion 31d-1. A gap is formed between the convex portion 311-1 and the side portion 31a-1. A gap is formed between the convex portion 311-1 and the side portion 31b-1. The convex portion 311-1 is provided so as to be magnetically connected or capacitively connected to the side portion 31a-1 and the side portion 31b-1. That is, the first electrode 31-1 is configured as a λ / 4 resonator.

[0069] Figure 6B The following is a structural example of the second electrode of the first resonator according to the modification of the first embodiment. The second electrode 32-1 is formed of a conductor. The second electrode 32-1 is formed in a rectangular shape. The second electrode 32-1 includes a hole 321a, a hole 322a, a hole 323a, and a hole 324a. The second electrode 32-1 is formed as a ground conductor. The radio waves received by the first resonator according to the modification of the first embodiment pass through the hole 321a to the hole 324a.

[0070] A modification of the first resonator has a structure in which the first electrode 31-1 and the second electrode 32-1 overlap. For example, a modification of the first resonator may be Figure 3A The first electrode 31 and Figure 6B The structure shown is that the second electrode 32-1 overlaps.

[0071] [Second embodiment]

[0072] use Figure 7 A configuration example of a unit structure according to the second embodiment will be described. Figure 7 It is a diagram showing a configuration example of a unit structure according to the second embodiment.

[0073] like Figure 7 As shown, the unit structure 10A includes a first resonator 12A, a second resonator 14A, a first reference conductor 16A, a third resonator 18A, a fourth resonator 20A, a second reference conductor 22A, and a third reference conductor 24A.

[0074] The first resonator 12A, the second resonator 14A, and the first reference conductor 16A are respectively Figure 2The first resonator 12, the second resonator 14, and the reference conductor 16 shown have the same structure, and therefore their description is omitted.

[0075] The third resonator 18A can be arranged in parallel in the substrate 2 so as to extend in the XY plane. The third resonator 18A is arranged on the uppermost surface of the unit structure 10A. The third resonator 18A includes a conductor. The third resonator 18A is, for example, a patch conductor formed in a rectangular shape. The shape of the third resonator 18A is not limited to a rectangular shape. The shape of the third resonator 18 can be arbitrarily changed according to the design. The third resonator 18A is configured to resonate by electromagnetic waves received from the +Z axis direction. The third resonator 18A can be a λ / 2 resonator.

[0076] The fourth resonator 20A can be arranged in parallel in the substrate 2 so as to extend in the XY plane. The fourth resonator 20A is arranged on the lowermost surface of the unit structure 10A. The fourth resonator 20A includes a conductor. The fourth resonator 20A is, for example, a patch conductor formed in a rectangular shape. The shape of the fourth resonator 20A is not limited to a rectangular shape. The shape of the fourth resonator 20 can be arbitrarily changed according to the design. The fourth resonator 20A is configured to resonate by receiving an electromagnetic wave from the +Z axis direction. The fourth resonator 20A can be a λ / 2 resonator.

[0077] The second reference conductor 22A can be arranged between the first resonator 12A and the third resonator 18A in the substrate 2. The second reference conductor 22A can be located, for example, at the center of the first resonator 12A and the third resonator 18A in the substrate 2, but the present disclosure is not limited thereto. The second reference conductor 22A can be located, for example, at a position where the distance from the first resonator 12A and the distance from the third resonator 18A are different.

[0078] The second reference conductor 22A is formed of a conductor. The second reference conductor 22A is formed in a rectangular shape. The second reference conductor 22A includes a hole 221A, a hole 222A, a hole 223A, and a hole 224A.

[0079] The holes 221A to 224A are provided to capacitively connect or magnetically connect the first resonator 12A and the third resonator 18A. The first resonator 12A and the third resonator 18A are magnetically connected or capacitively connected via the holes 221A to 224A.

[0080] The third reference conductor 24A can be arranged between the second resonator 14A and the fourth resonator 20A in the substrate 2. The second reference conductor 22A can be located, for example, at the center of the first resonator 12A and the third resonator 18A in the substrate 2, but the present disclosure is not limited thereto. The second reference conductor 22A can be located, for example, at a position where the distance from the first resonator 12A and the distance from the third resonator 18A are different.

[0081] The third reference conductor 24A is formed of a conductor. The third reference conductor 24A is formed in a rectangular shape. The third reference conductor 24A includes a hole 241A, a hole 242A, a hole 243A, and a hole 244A.

[0082] The holes 241A to 244A are provided to capacitively connect or magnetically connect the second resonator 14A and the fourth resonator 20A. The second resonator 14A and the fourth resonator 20A are magnetically connected or capacitively connected via the holes 241A to 244A.

[0083] like Figure 7 As shown, the first resonator 12A and the second resonator 14A are arranged symmetrically in the Z-axis direction with the first reference conductor 16A as the center. In the present disclosure, the resonators including the liquid crystal layer are preferably arranged symmetrically with respect to the Z-axis direction.

[0084] Figure 7 The unit structure 10A shown may be a structure in which a resonator including one liquid crystal layer is arranged between the third resonator 18A and the fourth resonator 20A, for example.

[0085] As described above, in the second embodiment, the λ / 2 resonator is arranged on the uppermost surface and the lowermost surface of the unit structure. Thus, the second embodiment can improve the performance of the radio wave refraction plate.

[0086] In addition, in the second embodiment, the reference conductors including the liquid crystal layer are arranged symmetrically in the Z-axis direction. Thus, in the second embodiment, the performance of the radio wave refraction plate can be improved.

[0087] [Third embodiment]

[0088] use Figure 8 An example of arrangement of the unit structures according to the third embodiment will be described. Figure 8 It is a diagram showing an example of arrangement of unit structures according to the third embodiment.

[0089] like Figure 8 As shown in the figure, in the third embodiment, the unit structure 10B, the unit structure 10C, and the unit structure 10D are arranged in the radio wave refraction plate 1A. The liquid crystal layer of the unit structure 10B and the liquid crystal layer of the unit structure 10C are arranged with a gap therebetween. The liquid crystal layer of the unit structure 10C and the liquid crystal of the unit structure 10D are arranged with a gap therebetween. That is, different voltages can be applied to the unit structure 10B, the unit structure 10C, and the unit structure 10D, respectively.

[0090] use Fig. 9 A method of applying a voltage to the unit structure according to the third embodiment will be described. Fig. 9 This is a diagram for explaining a method of applying a voltage to the unit structure according to the third embodiment.

[0091] like Fig. 9 As shown, the unit structure 10B includes a first resonator (first electrode 31B, second electrode 32B), a second resonator (first electrode 41B, second electrode 42B), a first reference conductor 16B, a third resonator 18B, a fourth resonator 20B, a second reference conductor 22B, and a third reference conductor 24B. The unit structure 10C includes a first resonator (first electrode 31C, second electrode 32C), a second resonator (first electrode 41C, second electrode 42C), a first reference conductor 16C, a third resonator 18C, a fourth resonator 20C, a second reference conductor 22C, and a third reference conductor 24C. The unit structure 10C includes a first resonator (a first electrode 31D and a second electrode 32D), a second resonator (a first electrode 41D and a second electrode 42D), a first reference conductor 16D, a third resonator 18D, a fourth resonator 20D, a second reference conductor 22D, and a third reference conductor 24D. The third resonator 18B, the third resonator 18C, and the third resonator 18D have different sizes. Specifically, the sizes of the third resonator 18B, the third resonator 18C, and the third resonator 18D are from large to small. The fourth resonator 20B, the fourth resonator 20C, and the fourth resonator 20D have different sizes. Specifically, the sizes of the fourth resonator 20B, the fourth resonator 20C, and the fourth resonator 20D are from large to small. The unit structure 10B, the unit structure 10C, and the unit structure 10D have the same Figure 7 The unit structure 10A shown has the same structure.

[0092] A gap is formed between the first electrode 31B and the first electrode 31C. A gap is formed between the first electrode 31C and the first electrode 31D. A gap is formed between the second electrode 32B and the second electrode 32C. A gap is formed between the second electrode 32C and the second electrode 32D. Therefore, different voltages of different systems can be applied between the first electrode 31B and the second electrode 32B, between the first electrode 31C and the second electrode 32C, and between the first electrode 31D and the second electrode 32D.

[0093] exist Fig. 9 In the example shown, a voltage V1 can be applied between the first electrode 31B and the second electrode 32B. A voltage V2 different from the voltage V1 can be applied between the first electrode 31C and the second electrode 32C. A voltage V3 different from the voltage V1 and the voltage V2 can be applied between the first electrode 31D and the second electrode 32D. That is, different voltages can be applied to the first resonator including the liquid crystal layer in the unit structure 10B, the unit structure 10C, and the unit structure 10D. As a result, the amount of change in the capacitance value of the unit structure 10B, the unit structure 10C, and the unit structure 10D can be different.

[0094] A gap is formed between the first electrode 41B and the first electrode 41C. A gap is formed between the first electrode 31C and the first electrode 31D. A gap is formed between the second electrode 32B and the second electrode 32C. A gap is formed between the second electrode 32C and the second electrode 32D. Therefore, different voltages of different systems can be applied between the first electrode 31B and the second electrode 32B, between the first electrode 31C and the second electrode 32C, and between the first electrode 31D and the second electrode 32D.

[0095] exist Fig. 9 In the example shown, a voltage V1 can be applied between the first electrode 41B and the second electrode 42B. A voltage V2 different from the voltage V1 can be applied between the first electrode 41C and the second electrode 42C. A voltage V3 different from the voltage V1 and the voltage V2 can be applied between the first electrode 41D and the second electrode 42D. That is, different voltages can be applied to the second resonator including the liquid crystal layer in the unit structure 10B, the unit structure 10C, and the unit structure 10D. As a result, the amount of change in the capacitance value of the unit structure 10B, the unit structure 10C, and the unit structure 10D can be different.

[0096] As described above, in the third embodiment, different capacitance values ​​can be added to adjacently arranged unit structures in the radio wave refraction plate. Thus, in the third embodiment, the direction in which the radio waves are refracted can be changed more flexibly.

[0097] [Fourth embodiment]

[0098] use Fig.10 A configuration example of a unit structure according to the fourth embodiment will be described. Fig.10 It is a diagram showing a structural example of a unit structure involved in the fourth embodiment.

[0099] like Fig.10 As shown, the unit structure 10E includes a first resonator 12E, a third resonator 18E, a second reference conductor 22E, and a reflection conductor 50 .

[0100] The first resonator 12E, the third resonator 18E and the second reference conductor 22E are respectively Figure 7 The first resonator 12A, the third resonator 18A, and the second reference conductor 22A shown have the same structure, and therefore their description is omitted.

[0101] The reflection conductor 50 is formed over the entire surface of the XY plane in the substrate 2. The reflection conductor 50 is arranged on the lowermost surface of the unit structure 10E. The reflection conductor 50 includes a conductor. The reflection conductor 50 is configured as a reference conductor (ground conductor). The reflection conductor 50 is configured, for example, to reflect electromagnetic waves received from the +Z axis direction to the +Z axis direction. In addition, the reflection conductor 50 is not limited to being formed over the entire surface of the XY plane. The reflection conductor 50 only needs to be large enough relative to the wavelength of the received radio wave.

[0102] That is, the unit structure 10E includes, in order from the top: the third resonator 18E configured as a λ / 2 resonator; the second reference conductor 22E that capacitively or magnetically connects the first resonator 12E and the third resonator 18E; the first resonator 12E including the liquid crystal layer configured as a λ / 4 resonator; and the reflective conductor 50 configured as a reference conductor.

[0103] In this embodiment, by arranging a plurality of unit structures 10E in two dimensions, a radio wave reflector that reflects electromagnetic waves incident from the outside can be formed. In addition, the structures corresponding to the first resonator 12E, the third resonator 18E, and the second reference conductor 22E can be symmetrically arranged in the Z-axis direction with the reflection conductor 50 as the center. That is, the unit structure 10E can also be a structure in which the first reference conductor 16A of the unit structure 10A is replaced by the reflection conductor 50.

[0104] The unit structure 10E is described as having a λ / 2 resonator disposed on the uppermost surface, but the present disclosure is not limited thereto. The unit structure 10E may be configured with a λ / 4 resonator including a liquid crystal layer instead of a λ / 2 resonator. That is, at least one of the two resonators provided in the unit structure may be a λ / 4 resonator including a liquid crystal layer. Fig.11 It is a diagram showing a configuration example of a unit structure according to a modification of the fourth embodiment.

[0105] like Fig.11 As shown, the unit structure 10F includes a first resonator 12F, a second resonator 14F, a reference conductor 16F, and a reflection conductor 50 .

[0106] The first resonator 12F, the second resonator 14F, and the reference conductor 16F are respectively Figure 2 The first resonator 12, the second resonator 14, and the reference conductor 16 shown have the same structure, and therefore their description is omitted.

[0107] That is, the unit structure 10F includes, in order from the top: a first resonator 12F configured as a λ / 4 resonator; a reference conductor 16F that capacitively or magnetically connects the first resonator 12F and the second resonator 14F; the second resonator 14F configured as a λ / 4 resonator; and a reflection conductor 50 configured as a reference conductor.

[0108] In the present embodiment, a radio wave reflecting plate that reflects electromagnetic waves incident from the outside can be formed by two-dimensionally arranging a plurality of unit structures 10F.

[0109] use Fig.12 An example of arrangement of the unit structures according to the fourth embodiment will be described. Fig.12 It is a diagram showing an example of arrangement of unit structures according to the fourth embodiment.

[0110] like Fig.12 As shown in FIG. 1 , the radio wave reflection plate 1B includes a unit structure 10G, a unit structure 10H, and a unit structure 10I. The liquid crystal layer of the unit structure 10G and the liquid crystal layer of the unit structure 10H are arranged with a gap therebetween. The liquid crystal layer of the unit structure 10H and the liquid crystal layer of the unit structure 10I are arranged with a gap therebetween. That is, different voltage systems can be applied to the unit structure 10G, the unit structure 10H, and the unit structure 10I, respectively.

[0111] use Fig.13 A method of applying voltage to the unit structure according to the fourth embodiment will be described. Fig.13 This is a diagram for explaining a method of applying a voltage to a unit structure according to the fourth embodiment.

[0112] like Fig.13 As shown, the unit structure 10G includes: a first resonator (a first electrode 31G, a second electrode 32G), a third resonator 18G, a second reference conductor 22G, and a reflection conductor 50. The unit structure 10H includes a first resonator (a first electrode 31H, a second electrode 32H), a third resonator 18H, a second reference conductor 22H, and a reflection conductor 50. The unit structure 10I includes a first resonator (a first electrode 31I, a second electrode 32I), a third resonator 18I, a second reference conductor 22I, and a reflection conductor 50. The third resonator 18G, the third resonator 18H, and the third resonator 18I have different sizes. Specifically, the sizes of the third resonator 18G, the third resonator 18H, and the third resonator 18I are from large to small in the order of size. The unit structure 10G, the unit structure 10H, and the unit structure 10I have the same Fig.10 The unit structure 10E shown has the same structure.

[0113] A gap is formed between the first electrode 31G and the first electrode 31H. A gap is formed between the first electrode 31H and the first electrode 31I. A gap is formed between the second electrode 32G and the second electrode 32H. A gap is formed between the second electrode 32H and the second electrode 32I. Therefore, different voltages of different systems can be applied between the first electrode 31G and the second electrode 32G, between the first electrode 31H and the second electrode 32H, and between the first electrode 31I and the second electrode 32I.

[0114] exist Fig.13 In the example shown, a voltage V1 can be applied between the first electrode 31G and the second electrode 32G. A voltage V2 different from the voltage V1 can be applied between the first electrode 31H and the second electrode 32H. A voltage V3 different from the voltage V1 and the voltage V2 can be applied between the first electrode 31I and the second electrode 32I. That is, different voltages can be applied to the first resonator including the liquid crystal layer in the unit structure 10G, the unit structure 10H, and the unit structure 10I. As a result, the amount of change in the capacitance value of the unit structure 10G, the unit structure 10H, and the unit structure 10I can be made different.

[0115] As described above, in the fourth embodiment, different capacitance values ​​can be added to adjacently arranged unit structures in the radio wave reflection plate. Thus, in the fourth embodiment, the direction in which radio waves are reflected can be changed more flexibly.

[0116] The above describes the embodiments of the present disclosure, but the present disclosure is not limited by the contents of these embodiments. In addition, the aforementioned constituent elements include elements that can be easily conceived by those skilled in the art, substantially the same elements, and elements of so-called equivalent scopes. Furthermore, the aforementioned constituent elements can be appropriately combined. Furthermore, various omissions, substitutions, or changes of constituent elements can be performed within the scope of the gist of the aforementioned embodiments.

[0117] Explanation of symbols

[0118] 1. 1A radio wave refraction plate

[0119] 2 substrate

[0120] 10, 10A, 10B, 10C, 10D, 10E, 10F, 10G, 10H, 10I Unit structure

[0121] 12, 12A, 12E, 12F 1st resonator

[0122] 14, 14A, 14F Second resonator

[0123] 16 Reference conductor

[0124] 16A 1st reference conductor

[0125] 18A, 18E, 18G, 18H, 18I 3rd resonator

[0126] 20A 4th resonator

[0127] 22A, 22B, 22C, 22D, 22E, 22G, 22H, 22I Second reference conductor

[0128] 24A, 24B, 24C, 24D Third reference conductor

[0129] 31, 31B, 31C, 31D, 31G, 31H, 31I, 31-1, 41, 41B, 41C, 41D 1st electrode

[0130] 32, 32B, 32C, 32D, 32G, 32H, 32I, 32-1, 42, 42B, 42C, 42D Second electrode

[0131] 50 Reflecting conductor.

Claims

1. A radio wave control panel, comprising: A plurality of unit structures arranged in the direction of the first surface; and a reference conductor which becomes a reference potential of the plurality of unit structures, The plurality of unit structures include: a first resonator extending in the direction of the first surface; and a second resonator which is separated from the first resonator in a first direction and extends in the first plane direction; At least one of the first resonator and the second resonator includes: a first electrode extending in the direction of the first surface; and a second electrode separated from the first electrode in the first direction and extending in the first surface direction; and The liquid crystal layer is disposed between the first electrode and the second electrode and extends in the first plane direction.

2. The electric wave control panel according to claim 1, wherein: The first electrode is a λ / 4 resonator formed into a frame-shaped body and having a convex portion protruding inwardly on the inner periphery of the frame-shaped body. The second electrode has a hole.

3. The electric wave control panel according to claim 1, wherein: The first electrode and the second electrode are λ / 4 resonators formed into a frame-shaped body and having a convex portion protruding inward on the inner periphery of the frame-shaped body. The first electrode and the second electrode are arranged so that their shapes are rotationally symmetric in the first plane direction.

4. The electric wave control panel according to claim 3, wherein: The first electrode is disposed in a state where the shape of the first electrode is rotated 90 degrees in the first surface direction with respect to the second electrode.

5. The radio wave control panel according to claim 2 or 3, wherein: The plurality of unit structures are arranged with intervals therebetween.

6. The electric wave control panel according to claim 2 or 3, wherein: The first electrode, the second electrode, and the liquid crystal layer are arranged symmetrically in the first direction with respect to the reference conductor.

7. The electric wave control panel according to claim 6, wherein: The plurality of unit structures include: a first λ / 2 resonator disposed on an upper layer of the first resonator and extending in the first plane direction; and The second λ / 2 resonator is arranged in a lower layer of the second resonator and extends in a direction of the first surface.

8. The electric wave control panel according to claim 1, wherein: The plurality of unit structures include a reflection conductor that is disposed in a lower layer of the second resonator and extends over the entire surface in the first plane direction.

9. The electric wave control panel according to claim 8, wherein: The first electrode is a λ / 4 resonator formed into a frame-shaped body and having a convex portion protruding inwardly on the inner periphery of the frame-shaped body. The second electrode has a hole.

10. The electric wave control panel according to claim 8, wherein: The first electrode and the second electrode are λ / 4 resonators formed into a frame-shaped body and having a convex portion protruding inward on the inner periphery of the frame-shaped body. The first electrode and the second electrode are arranged so that their shapes are rotationally symmetric in the first plane direction.

11. The electric wave control panel according to claim 10, wherein: The first electrode is disposed in a state where the shape of the first electrode is rotated 90 degrees in the first surface direction with respect to the second electrode.

12. The electric wave control panel according to claim 9 or 10, wherein: The plurality of unit structures are arranged with intervals therebetween.

13. The electric wave control panel according to claim 9 or 10, wherein: The first electrode is configured as a λ / 2 resonator. The second electrode constitutes the λ / 4 resonator.

14. A composite resonator, comprising: a first resonator extending in a first plane direction; and a second resonator which is separated from the first resonator in a first direction and extends in the first plane direction; At least one of the first resonator and the second resonator includes: a first electrode extending in the direction of the first surface; a second electrode separated from the first electrode in the first direction and extending in the first surface direction; and The liquid crystal layer is disposed between the first electrode and the second electrode and extends in the first plane direction.

15. The composite resonator according to claim 14, wherein: The composite resonator comprises: The reflective conductor is disposed in a lower layer of the second resonator and extends over the entire surface in the direction of the first surface.

16. The composite resonator according to claim 14 or 15, wherein: The first electrode is a λ / 4 resonator formed into a frame-shaped body and having a convex portion protruding inwardly on the inner periphery of the frame-shaped body. The second electrode has a hole.

17. The composite resonator according to claim 14 or 15, wherein: The first electrode and the second electrode are λ / 4 resonators formed into a frame-shaped body and having a convex portion protruding inward on the inner periphery of the frame-shaped body. The first electrode and the second electrode are arranged so that their shapes are rotationally symmetric in the first plane direction.

18. The composite resonator according to claim 17, wherein: The first electrode is disposed in a state where the shape of the first electrode is rotated 90 degrees in the first surface direction with respect to the second electrode.

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