Composite resonators and wave-refracting plates

Abstract

This composite resonator includes: a first electrical conductor extending in a first planar direction; a second electrical conductor which is separated from the first electrical conductor in a first direction and extends in the first planar direction; a third electrical conductor which is separated from the second electrical conductor in the first direction and extends in the first planar direction; a fourth electrical conductor which is separated from the third electrical conductor in the first direction and extends in the first planar direction; and a plurality of connecting conductors which are parallel to the first direction and which are provided along a periphery of the first electrical conductor, the second electrical conductor, the third electrical conductor, and the fourth electrical conductor. The plurality of connecting conductors are configured to be electromagnetically connected to the first electrical conductor, the second electrical conductor, the third electrical conductor, and the fourth electrical conductor.

Description

[Technical Field]

[0001] The present disclosure relates to composite resonators and wave-refracting plates. [Background technology]

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

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-231182 Summary of the Invention

[0004] The composite resonator according to the present disclosure includes a first conductor extending in a first surface direction, a second conductor spaced apart from the first conductor in the first direction and extending in the first surface direction, a third conductor spaced apart from the second conductor in the first direction and extending in the first surface direction, a fourth conductor spaced apart from the third conductor in the first direction and extending in the first surface direction, and a plurality of connecting conductors parallel to the first direction arranged around the first conductor, the second conductor, the third conductor, and the fourth conductor, wherein the plurality of connecting conductors are configured to electromagnetically connect the first conductor, the second conductor, the third conductor, and the fourth conductor.

[0005] The composite resonator according to the present disclosure includes a first conductor extending in a first surface direction, a second conductor spaced apart from the first conductor in the first direction and extending in the first surface direction, and a plurality of connecting conductors parallel to the first direction arranged around the first conductor and the second conductor, wherein the plurality of connecting conductors are configured to electromagnetically connect the first conductor and the second conductor.

[0006] The radio wave refraction plate according to the present disclosure includes a plurality of composite resonators according to the present disclosure, and the plurality of composite resonators are arranged in the first surface direction. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a diagram for explaining an outline of a radio wave refraction plate. [Figure 2] FIG. 2 is a diagram showing an example of the configuration of a unit structure according to the first embodiment. [Figure 3] FIG. 3 is a top view of a configuration example of a unit structure according to the first embodiment. [Figure 4] FIG. 4 is a side view of a configuration example of a unit structure according to the first embodiment. [Figure 5] FIG. 5 is a diagram showing a configuration example of a unit structure according to a first example of a modification of the first embodiment. [Figure 6] FIG. 6 is a diagram showing a configuration example of a unit structure according to a second example of the modified example of the first embodiment. [Figure 7] FIG. 7 is a diagram showing an example of the configuration of the radio wave refraction plate according to the first embodiment. [Figure 8] FIG. 8 is a diagram for explaining the amount of phase change of the unit structure according to the first embodiment. [Figure 9] FIG. 9 is a diagram showing an example of the configuration of a radio wave refraction plate according to the second embodiment. [Figure 10] FIG. 10 is a top view showing an example of the configuration of the radio wave refraction plate according to the third embodiment. [Figure 11] FIG. 11 is a cross-sectional view showing the configuration of a radio wave refraction plate according to the third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. However, the present disclosure is not limited to the embodiments described below.

[0009] In the following explanation, an XYZ Cartesian coordinate system is set, and the positional relationship of each part will be explained with reference to this XYZ Cartesian coordinate system. The direction parallel to the X axis in a horizontal plane is defined as the X-axis direction, the direction parallel to the Y axis in the horizontal plane perpendicular to the X axis is defined as the Y-axis direction, and the direction parallel to the Z axis perpendicular to the horizontal plane is defined as the Z-axis direction. Furthermore, the plane containing the X and Y axes will be referred to as the XY plane as appropriate, the plane containing the X and Z axes will be referred to as the XZ plane as appropriate, and the plane containing the Y and Z axes will be referred to as the YZ plane as appropriate. The XY plane is parallel to the horizontal plane. The XY plane, XZ plane, and YZ plane are perpendicular to each other.

[0010] [overview] (Radio wave refraction plate) An overview of the radio wave refraction plate will be explained using Fig. 1. Fig. 1 is a diagram for explaining the overview of the radio wave refraction plate.

[0011] As shown in FIG. 1, the radio wave refraction plate 1 includes a plurality of unit structures 10 and a substrate 12.

[0012] The multiple unit structures 10 are arranged in the XY plane direction, which may also be referred to as the first plane direction. That is, the multiple unit structures 10 are arranged two-dimensionally. In this embodiment, the multiple unit structures 10 each have a resonant structure. The structure of the unit structures 10 will be described later. The substrate 12 may be, for example, a dielectric substrate made of a dielectric material. That is, in this embodiment, the radio wave refraction plate 1 is configured by arranging the multiple unit structures 10, each having a resonant structure, two-dimensionally on the substrate 12 made of a dielectric material.

[0013] [First embodiment] An example of the configuration of a unit structure according to the first embodiment will be described with reference to Fig. 2, Fig. 3, and Fig. 4. Fig. 2 is a diagram showing an example of the configuration of a unit structure according to the first embodiment. Fig. 3 is a top view of the example of the configuration of a unit structure according to the first embodiment. Fig. 4 is a side view of the example of the configuration of a unit structure according to the first embodiment.

[0014] 2, the unit structure 10 includes a first conductor 14, a second conductor 16, a third conductor 18, a fourth conductor 20, and a plurality of connecting conductors 22. The unit structure 10 is a type of composite resonator.

[0015] The first conductors 14 may be arranged on the substrate 12 so as to lie flat on the XY plane. The first conductors 14 may be, for example, rectangular conductors formed in a frame shape. In the example shown in FIG. 2, the first conductors 14 are shown as rectangular conductors formed in a frame shape, but the present disclosure is not limited thereto. The shape of the first conductors 14 may be, for example, a circular conductor formed in a frame shape, or a polygonal shape other than a rectangular conductor formed in a frame shape. The shape of the first conductors 14 may be changed as desired depending on the design.

[0016] The second conductors 16 may be arranged on the substrate 12 at positions spaced apart from the first conductors 14 in the Z-axis direction, extending across the XY plane. The second conductors 16 may be, for example, rectangular conductors. The second conductors 16 may be a reference conductor (e.g., a ground conductor) of the unit feature 10. The second conductors 16 have coupling holes 16a for magnetically or capacitively connecting the first conductors 14 and the second conductors 16. As shown in FIG. 3, the coupling holes 16a are formed in the center of the second conductors 16, for example. The coupling holes 16a are smaller than the inner frame of the first conductors 14. Although the coupling holes 16a are formed in a rectangular shape, the present disclosure is not limited thereto. In the example shown in FIG. 2, the second conductors 16 are shown as rectangular conductors, but the present disclosure is not limited thereto. The shape of the second conductors 16 may be, for example, a circle or a polygon other than a rectangle. The shape of the second conductors 16 may be arbitrarily changed depending on the design.

[0017] The third conductors 18 may be arranged on the substrate 12 at positions spaced apart from the second conductors 16 in the Z-axis direction, extending across the XY plane. The third conductors 18 may be, for example, rectangular conductors. The third conductors 18 may be a reference conductor (e.g., a ground conductor) of the unit feature 10. The third conductors 18 have coupling holes 18a that magnetically or capacitively connect the second conductors 16 and the third conductors 18 and magnetically or capacitively connect the third conductors 18 and the fourth conductors 20. The coupling holes 18a may be formed, for example, in the center of the third conductor 18. The coupling holes 18a have the same shape as the coupling holes 16a. In the example shown in FIG. 2, the third conductors 18 are shown as rectangular conductors, but the present disclosure is not limited thereto. The shape of the third conductors 18 may be, for example, circular or polygonal except for rectangular. The shape of the third conductors 18 may be arbitrarily changed depending on the design. The third conductor 18 may be formed in the same shape as the second conductor 16 .

[0018] The fourth conductor 20 is a first conductive material on the substrate 12. 3 conductor 18 The fourth conductor 20 may be arranged at a position away from the first conductor 14 in the Z-axis direction, spreading across the XY plane. The fourth conductor 20 may be, for example, a rectangular conductor formed in a frame shape. In the example shown in FIG. 2, the fourth conductor 20 is shown as a rectangular conductor formed in a frame shape, but the present disclosure is not limited thereto. The shape of the fourth conductor 20 may be, for example, a circular conductor formed in a frame shape, or a polygonal shape other than a rectangular conductor formed in a frame shape. The shape of the fourth conductor 20 may be changed as desired depending on the design. The fourth conductor 20 may be formed in the same shape as the first conductor 14.

[0019] The first conductor 14, the second conductor 16, the third conductor 18, and the fourth conductor 20 have the same outer dimensions.

[0020] The connecting conductor 22 electromagnetically connects the first conductor 14, the second conductor 16, the third conductor 18, and the fourth conductor 20. One end of the connecting conductor 22 is electromagnetically connected to the first conductor 14, and the other end is electromagnetically connected to the fourth conductor 20. The connecting conductor 22 may be, for example, a via formed parallel to the Z-axis direction from the first conductor 14 to the fourth conductor 20. A plurality of connecting conductors 22 are provided along the peripheries of the first conductor 14, the second conductor 16, the third conductor 18, and the fourth conductor 20. The connecting conductors 22 are, for example, provided at equal intervals along the peripheries of the first conductor 14, the second conductor 16, the third conductor 18, and the fourth conductor 20. As shown in FIG. 4 , the distance L between adjacent connecting conductors 22 may be, for example, equal to or less than the wavelength of radio waves received by the unit structure 10 from a base station or the like. The interval L is preferably, for example, equal to or less than half the wavelength of the radio wave that the unit structure 10 receives from a base station or the like.

[0021] In the unit structure 10, the first conductor 14 and the second conductor 16 are magnetically or capacitively connected to each other. The first conductor 14 and the second conductor 16 form one resonator.

[0022] In the unit structure 10, the second conductor 16 and the third conductor 18 are magnetically or capacitively connected to each other. The second conductor 16 and the third conductor 18 form one resonator.

[0023] In the unit structure 10, the third conductor 18 and the fourth conductor 20 are magnetically or capacitively connected to each other. The third conductor 18 and the fourth conductor 20 form one resonator.

[0024] The unit structure 10 has three resonators decoded by the first conductor 14 to the fourth conductor 20. The unit structure 10 can perform one or more of the functions of a phase shifter, a band-pass filter, a high-pass filter, and a low-pass filter depending on the propagation characteristics of the three resonators.

[0025] [Modification of the first embodiment] Next, a modified example of the first embodiment will be described. For example, the unit structure 10 shown in Fig. 2 has a structure in which the connecting conductor 22 penetrates the second conductor 16 and the third conductor 18, but the first embodiment is not limited to this.

[0026] Fig. 5 is a diagram showing a configuration example of a unit structure according to a first example of a modification of the first embodiment. As in unit structure 10a shown in Fig. 5, a portion of connecting conductor 22 arranged between second conductor 16 and third conductor 18 may be arranged outside a portion of connecting conductor 22 arranged between first conductor 14 and second conductor 16.

[0027] By arranging them in this manner, the area surrounded by the second conductor 16 and the connecting conductor 22 of the third conductor is expanded, and as a result, the wavelength of the corresponding electromagnetic wave can be lengthened.

[0028] Fig. 6 is a diagram showing a configuration example of a unit structure according to a second example of the modification of the first embodiment. As in unit structure 10b shown in Fig. 6, contrary to unit structure 10a shown in Fig. 5, a portion of connecting conductor 22 arranged between second conductor 16 and third conductor 18 may be arranged more inward than a portion of connecting conductor 22 arranged between first conductor 14 and second conductor 16. As a result, the wavelength of the electromagnetic waves corresponding to the region surrounded by connecting conductor 22 of second conductor 16 and third conductor can be shortened.

[0029] [Radio wave refraction plate] An example of the configuration of the radio wave refraction plate according to the first embodiment will be described with reference to Fig. 7. Fig. 7 is a diagram showing an example of the configuration of the radio wave refraction plate according to the first embodiment.

[0030] As shown in FIG. 7, the radio wave refraction plate 1A includes a plurality of unit structures 10A, a plurality of unit structures 10B, a plurality of unit structures 10C, and a plurality of unit structures 10D. The unit structures 10A, 10B, 10C, and 10D are arranged two-dimensionally on the XY plane. The unit structures 10A, 10B, 10C, and 10D are arranged in a lattice pattern on the XY plane. The unit structures 10A, 10B, 10C, and 10D are configured to change the phase of incident electromagnetic waves and emit them. In the radio wave refraction plate 1A, 、X Two adjacent unit structures in the X direction or Y direction, which is an in-plane direction of the Y plane, are configured so as to have different phase differences that shift the phase of the incident electromagnetic wave.

[0031] In the example shown in FIG. 7, a plurality of unit structures 10A are lined up in a first row along the X direction of the radio wave refraction plate 1A. A plurality of unit structures 10B are lined up in a second row along the X direction of the radio wave refraction plate 1A. A plurality of unit structures 10C are lined up in a third row along the X direction of the radio wave refraction plate 1A. A plurality of unit structures 10D are lined up in a fourth row along the X direction of the radio wave refraction plate 1A. A plurality of unit structures 10A are lined up in a fifth row along the X direction of the radio wave refraction plate 1A. A plurality of unit structures 10B are lined up in a sixth row along the X direction of the radio wave refraction plate 1A. A plurality of unit structures 10C are lined up in a seventh row along the X direction of the radio wave refraction plate 1A. A plurality of unit structures 10D are lined up in an eighth row along the X direction of the radio wave refraction plate 1A.

[0032] The second conductor 16A of the unit structure 10A has a coupling hole 16Aa. The second conductor 16B of the unit structure 10B has a coupling hole 16Ba. The second conductor 16C of the unit structure 10C has a coupling hole 16Ca. The second conductor 16D of the unit structure 10D has a coupling hole 16Da.

[0033] The outer diameters of the conductors of unit structures 10A to 10D are different from each other. The outer diameters of the conductors decrease in the order of unit structure 10A, unit structure 10B, unit structure 10C, and unit structure 10D. The outer diameters of the conductors also decrease in the order of coupling hole 16Aa, coupling hole 16Ba, coupling hole 16Ca, and coupling hole 16Da.

[0034] That is, the unit structures 10A to 10D are configured to have different resonant frequencies, respectively. That is, in the radio wave refraction plate 1A, the resonant frequency is changed depending on the arrangement position of each unit structure, thereby changing the amount of phase change.

[0035] In this embodiment, in the example shown in FIG. 7, four unit structures, namely, unit structure 10A, unit structure 10B, unit structure 10C, and unit structure 10D, are configured to change the phase of the electromagnetic wave incident on radio wave refraction plate 1A by 360°.

[0036] The amount of phase change of the unit structure according to the first embodiment will be described with reference to Fig. 8. Fig. 8 is a diagram for explaining the amount of phase change of the unit structure.

[0037] In the example shown in FIG. 7 , four unit structures, namely, unit structure 10A, unit structure 10B, unit structure 10C, and unit structure 10D, are used to change the phase of an electromagnetic wave incident on radio wave refraction plate 1A by 360°. FIG. 8 shows the amount of phase change in the Y-axis direction. Specifically, FIG. 8 shows an example in which a plane wave arriving at radio wave refraction plate 1A is refracted and emitted as a plane wave. Point P1 indicates the phase of the incident electromagnetic wave, with a phase change of 0°. Point P2 indicates the phase change of the first unit structure 10A in the Y-axis direction, with a phase change of 90°. Point P3 indicates the phase change of the first unit structure 10B in the Y-axis direction, with a phase change of 180°. Point P4 indicates the phase change of the first unit structure 10C in the Y-axis direction, with a phase change of 270°. Point P5 indicates the phase change amount of the first unit structure 10D in the Y-axis direction, which is 360°. Points P6, P7, P8, and P9 indicate the phase change amounts of the second unit structure 10A, unit structure 10B, unit structure 10C, and unit structure 10D, respectively. The phase change amounts of the second unit structure 10A, unit structure 10B, unit structure 10C, and unit structure 10D are 450°, 540°, 630°, and 720°, respectively. That is, in this embodiment, the four unit structures, unit structure 10A, unit structure 10B, unit structure 10C, and unit structure 10D, are configured to change the phase of the electromagnetic wave arriving at the radio wave refraction plate 1A by 360°.

[0038] The unit structure 10 may be called a unit cell. For example, each of the unit structures 10A, 10B, 10C, and 10D may be called a unit cell. A repeating unit in which a plurality of unit cells with different structures are arranged may be called a supercell. For example, an arrangement of the unit structures 10A, 10B, 10C, and 10D may be called a supercell. A supercell may have a function such as generating a phase change from 0° to 360°. The radio wave refraction plate 1 may have a large area by cellularizing the supercell as a single unit. Note that the unit of phase change that can be a supercell is not limited to 0° to 360°, but may be from 0° to 360° x n (where n is a natural number).

[0039] 7, the phase difference between the plurality of unit structures aligned in the Y-axis direction and a reference unit structure (e.g., unit structure 10A) increases as the unit structures advance in the Y-axis direction or the -Y-axis direction. In the example shown in FIG. 7, the phase difference between the plurality of unit structures aligned in the Y-axis direction is configured to advance or delay by a first phase difference (e.g., 90°) as the unit structures advance in the Y-axis direction or the -Y-axis direction.

[0040] In the radio wave refraction plate 1A, if the distance between adjacent unit structures is d, the difference in the amount of phase change between adjacent units is ΔΦ, the angle at which the electromagnetic waves arriving at the radio wave refraction plate 1A are refracted is θ, and the wave number of the electromagnetic waves arriving at the radio wave refraction plate 1A is k, then "ΔΦ = kd sinθ" Toi The following relationship holds. In the example shown in FIG. 8, the gradient of the phase change amount is described as being in the Y-axis direction, but the present disclosure is not limited to this. In the present disclosure, the direction of refraction can be designed arbitrarily by setting the gradient of the phase change amount in any direction. Also, in the example shown in FIG. 8, the gradient of the phase change amount is described as being changed linearly, but the present disclosure is not limited to this. In the present disclosure, for example, by setting the gradient of the phase change amount to be a curve, it is possible to converge or diffuse a plane wave arriving at the radio wave refraction plate 1A to any location.

[0041] 8, the phase difference between the electromagnetic waves emitted by two adjacent unit structures in the X-axis direction is described as 90°, but the present disclosure is not limited to this. The phase difference between the electromagnetic waves emitted by two adjacent unit structures may be, for example, 30°, 45°, 60°, etc. In other words, the phase difference between the electromagnetic waves emitted by two adjacent unit structures may be any value.

[0042] 8 , the phase difference between the electromagnetic waves emitted by unit structure 10A and unit structure 10B, the phase difference between the electromagnetic waves emitted by unit structure 10B and unit structure 10C, the phase difference between the electromagnetic waves emitted by unit structure 10C and unit structure 10D, and the phase difference between the electromagnetic waves emitted by unit structure 10D and unit structure 10A are all 90°, but the present disclosure is not limited to this. The phase difference between the electromagnetic waves emitted by unit structure 10A and unit structure 10B, the phase difference between the electromagnetic waves emitted by unit structure 10B and unit structure 10C, the phase difference between the electromagnetic waves emitted by unit structure 10C and unit structure 10D, and the phase difference between the electromagnetic waves emitted by unit structure 10D and unit structure 10A may be different from each other. The phase difference between the electromagnetic waves emitted by unit structure 10A and unit structure 10B, the phase difference between the electromagnetic waves emitted by unit structure 10B and unit structure 10C, the phase difference between the electromagnetic waves emitted by unit structure 10C and unit structure 10D, and the phase difference between the electromagnetic waves emitted by unit structure 10D and unit structure 10A may be set according to the design, intended use, etc.

[0043] As described above, in the first embodiment, a plurality of unit structures having different outer diameters from the first conductor 14 to the fourth conductor 20 are two-dimensionally arranged so as to shift the phase of the incoming electromagnetic wave by 360°. As a result, in the first embodiment, the area of ​​the radio wave refraction plate 1A can be increased by repeating the set of arrangements so as to shift the phase of the incoming electromagnetic wave by 360°.

[0044] [Second embodiment] An example of the configuration of the radio wave refraction plate according to the second embodiment will be described with reference to Fig. 9. Fig. 9 is a diagram showing an example of the configuration of the radio wave refraction plate according to the second embodiment.

[0045] 9, the radio wave refraction plate 1B according to the second embodiment includes a plurality of unit structures 10A, a plurality of unit structures 10B, a plurality of unit structures 10C, and a plurality of unit structures 10D. The unit structures 10A to 10D differ from the radio wave refraction plate 1A shown in FIG. 7 in that they are arranged radially in the XY plane.

[0046] In the example shown in Figure 9, the first row along the Y direction of the radio wave refraction plate 1B is arranged in the following order: unit structure 10B, unit structure 10A, unit structure 10B, unit structure 10C, unit structure 10C, unit structure 10B, unit structure 10A, and unit structure 10B.

[0047] In the example shown in Figure 9, the second row along the Y direction of the radio wave refraction plate 1B is arranged in the following order: unit structure 10C, unit structure 10B, unit structure 10C, unit structure 10D, unit structure 10D, unit structure 10C, unit structure 10B, and unit structure 10C.

[0048] In the example shown in Figure 9, the third row along the Y direction of the radio wave refraction plate 1B is arranged in the following order: unit structure 10C, unit structure 10B, unit structure 10C, unit structure 10D, unit structure 10D, unit structure 10C, unit structure 10B, and unit structure 10C.

[0049] In the example shown in Figure 9, the fourth row along the Y direction of the radio wave refraction plate 1B is arranged in the following order: unit structure 10B, unit structure 10A, unit structure 10B, unit structure 10C, unit structure 10C, unit structure 10B, unit structure 10A, and unit structure 10B.

[0050] That is, in the central region of the radio wave refraction plate 1B, four unit structures 10E are arranged, among the unit structures 10A to 10D, which have the smallest outer diameters of the first conductors 14 to the fourth conductors 20. In the radio wave refraction plate 1B, the unit structures 10A, 10B, and 10C are arranged radially around the four unit structures 10D.

[0051] 9, four unit structures, unit structure 10A to unit structure 10D, are configured to change the phase of an electromagnetic wave incident on radio wave refraction plate 1B by 360°. Radio wave refraction plate 1B is configured such that, among the plurality of unit structures aligned in the first radial direction of the XY plane, the phase difference becomes larger relative to a reference unit structure (e.g., unit structure 10D) as the wave advances from the center toward the outside or from the outside toward the center. Radio wave refraction plate 1B is configured such that, among the plurality of unit structures aligned in the first radial direction of the XY plane, the phase difference advances or delays by a phase difference (e.g., 90°) as the wave advances from the center toward the outside or from the outside toward the center.

[0052] As described above, in the second embodiment, a plurality of unit structures having different outer diameters from the first conductor 14 to the fourth conductor 20 are radially arranged two-dimensionally so as to shift the phase of the incoming electromagnetic wave by 360°. As a result, in the first embodiment, the area of ​​the radio wave refraction plate 1B can be increased by repeating the set of arrangements so as to shift the phase of the incoming electromagnetic wave by 360°.

[0053] [Third embodiment] Next, a third embodiment will be described.

[0054] In the first embodiment, the radio wave refraction plate 1A has been described as having an arrangement of a plurality of unit structures with different outer diameters, such as unit structures 10A to 10D, from the first conductor 14 to the fourth conductor 20, but the present disclosure is not limited to this. In the present disclosure, for example, the heights of the unit structures may be varied along the Y-axis direction in the radio wave refraction plate 1A.

[0055] An example of the configuration of the radio wave refraction plate according to the third embodiment will be described with reference to Fig. 10 and Fig. 11. Fig. 10 is a top view showing an example of the configuration of the radio wave refraction plate according to the third embodiment. Fig. 11 is a cross-sectional view showing the configuration of the radio wave refraction plate according to the third embodiment.

[0056] 10, the radio wave refraction plate 1B includes a unit structure 10E, a unit structure 10F, a unit structure 10G, and a unit structure 10H. For example, the unit structures 10E, 10F, 10G, and 10H may be configured so that their heights decrease in this order.

[0057] Fig. 11 shows a cross-sectional view taken along line AA in Fig. 10. As shown in Fig. 11, a unit structure 10E includes a first conductor 14E, a second conductor 16E, a third conductor 18E, and a fourth conductor 20E. The first conductor 14E to the fourth conductor 20E are electromagnetically connected by a connecting conductor (not shown).

[0058] Second conductor 16E and third conductor 18E are each composed of a single sheet of conductor. Second conductor 16E has coupling hole 16Ea. Third conductor 18E has coupling hole 18Ea. Coupling hole 16Ea and coupling hole 18Ea may have the same shape and size.

[0059] 11, a unit structure 10F includes a first conductor 14F, a second conductor 16F, a third conductor 18F, and a fourth conductor 20F. The first conductor 14F to the fourth conductor 20F are electromagnetically connected by a connecting conductor (not shown).

[0060] The first conductor 14F and the fourth conductor 20F have the same shapes as the first conductor 14E and the fourth conductor 20E of the unit structure 10E, respectively.

[0061] Second conductor 16F and third conductor 18F each have a two-layer structure with two conductors facing each other. Second conductor 16F has coupling hole 16Fa. Third conductor 18F has coupling hole 18Fa. Coupling hole 16Fa and coupling hole 18Fa may have the same shape and size.

[0062] The heights of second conductor 16F and third conductor 18F are respectively greater than the heights of second conductor 16E and third conductor 18E of unit structure 10E. The sizes of coupling holes 16Fa and coupling holes 18Fa are respectively smaller than coupling holes 16Ea and coupling holes 18Ea of unit structure 10E.

[0063] 11, a unit structure 10G includes a first conductor 14G, a second conductor 16G, a third conductor 18G, and a fourth conductor 20G. The first conductor 14G to the fourth conductor 20G are electromagnetically connected by a connecting conductor (not shown).

[0064] The first conductor 14G and the fourth conductor 20G have the same shapes as the first conductor 14E and the fourth conductor 20E of the unit structure 10E, respectively.

[0065] Second conductor 16G and third conductor 18G each have a two-layer structure with two conductors facing each other. Second conductor 16G has coupling hole 16Ga. Third conductor 18G has coupling hole 18Ga. Coupling hole 16Ga and coupling hole 18Ga may have the same shape and size.

[0066] The heights of the second conductor 16G and the third conductor 18G are greater than the heights of the second conductor 16F and the third conductor 18F of the unit structure 10F, respectively. The sizes of the coupling holes 16Ga and the coupling holes 18Ga are smaller than the sizes of the coupling holes 16Fa and the coupling holes 18Fa of the unit structure 10F, respectively.

[0067] 11, a unit structure 10H includes a first conductor 14H, a second conductor 16H, a third conductor 18H, and a fourth conductor 20H. The first conductor 14H to the fourth conductor 20H are electromagnetically connected by a connecting conductor (not shown).

[0068] The first conductor 14H and the fourth conductor 20H have the same shapes as the first conductor 14E and the fourth conductor 20E of the unit structure 10E, respectively.

[0069] The second conductor 16H and the third conductor 18H each have a two-layer structure in which two conductors face each other. The second conductor 16H has a coupling hole 16Ha. The third conductor 18H has a coupling hole 18Ha. The coupling hole 16Ha and the coupling hole 18Ha may have the same shape and size.

[0070] The heights of the second conductor 16H and the third conductor 18H are greater than the heights of the second conductor 16G and the third conductor 18G of the unit structure 10G, respectively. The sizes of the coupling holes 16Ha and 18Ha are smaller than the sizes of the coupling holes 16Ga and 18Ga, respectively.

[0071] In the third embodiment, the heights of the second conductors 16E to 16H and the third conductors 18E to 18H are changed, so that the height dimensions of the unit structures 10E to 10H are the same.

[0072] In the third embodiment, unit structures 10E to 10H may be arranged two-dimensionally. For example, unit structures 10E to 10H may be arranged in a lattice pattern or radially, like unit structures 10A to 10D shown in FIGS. 7 and 9.

[0073] As described above, in the third embodiment, a plurality of unit structures with different heights are arranged two-dimensionally so as to change the phase of the incoming electromagnetic wave by 360°. As a result, in the first embodiment, the area of ​​the radio wave refraction plate can be increased by repeating the set of arrangements so as to change the phase of the incoming electromagnetic wave by 360°.

[0074] The above describes the embodiments of the present disclosure, and the elements of the embodiments function as spatial filters. As a result, design can be easily achieved by controlling the phase through frequency shifts in the spatial filter. Furthermore, the transmission plate elements do not need to have similar shapes, and elements from various embodiments can be mixed to function as transmission plates. In this case, as a general filter characteristic, the phase as a normalized filter is determined by determining the number of stages and the coupling between elements. In other words, the initial phase of the filter can be changed by making the inter-resonator coupling inductive or capacitive. For example, in a spatial filter, design can be facilitated by making the low-phase side of the transmission plate element capacitive and the high-phase side inductive. For example, in a spatial filter, design can be facilitated by making the low-phase side of the transmission plate element inductive and the high-phase side capacitive. The boundary between the low-phase side and the high-phase side is not limited to 180°, and various angles such as 120°, 135°, 150°, 210°, 225°, and 240° can be used. When the phase range in one supercell of the spatial filter is 0° to 360°×n, it may include multiple phase boundaries, which are not limited to a single angle but may be independent of each other.

[0075] Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the contents of these embodiments. Furthermore, the above-described components include those that can be easily imagined by a person skilled in the art, those that are substantially the same, and those that are within the so-called equivalent range. Furthermore, the above-described components can be combined as appropriate. Furthermore, various omissions, substitutions, or modifications of the components can be made without departing from the spirit of the above-described embodiments. [Explanation of symbols]

[0076] 1. Radio wave refraction plate 10 Unit Structure 12 PCB 14 First conductor 16 Second conductor 16a,18a binding hole 18 Third Conductor 20 Fourth Conductor 22 Connecting conductor

Claims

1. a first conductor extending in a first surface direction; a second conductor spaced apart from the first conductor in a first direction and extending in the first surface direction; a third conductor spaced apart from the second conductor in the first direction and extending in the first surface direction; a fourth conductor spaced apart from the third conductor in the first direction and extending in the first surface direction; a plurality of connection conductors provided parallel to the first direction along the periphery of the first conductor, the second conductor, the third conductor, and the fourth conductor; the plurality of connection conductors are configured to electromagnetically connect the first conductor, the second conductor, the third conductor, and the fourth conductor; Composite resonator.

2. the first conductor and the second conductor are magnetically or capacitively connected; the second conductor and the third conductor are magnetically or capacitively connected to each other; the third conductor and the fourth conductor are magnetically or capacitively connected to each other. The composite resonator of claim 1 .

3. the spacing between the adjacent connecting conductors is equal to or less than the wavelength of the received radio wave; The composite resonator according to claim 1 or 2.

4. The distance between the adjacent connecting conductors is equal to or less than half the wavelength of the received radio wave. The composite resonator according to claim 3 .

5. the second conductor and the third conductor have coupling holes that magnetically or capacitively connect the first conductor and the fourth conductor; The composite resonator according to claim 1 or 2.

6. The first conductor and the fourth conductor are configured in a frame shape. The composite resonator according to claim 1 or 2.

7. A composite resonator according to claim 1, The plurality of composite resonators are arranged in the first plane direction. Radio wave refraction plate.

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