Radio wave control plate

Abstract

This radio wave control plate includes a plurality of unit structures that are arranged in a first planar direction, and a reference conductor that serves as a reference potential of the plurality of unit structures. The plurality of unit structures include first and second resonant structures that are provided with a first resonator that widens in the first planar direction, and a second resonator that is formed in the same plane as the first resonator and is electrically connected to the reference conductor, the first and second resonant structures being rotationally symmetrical in the first planar direction. The first resonant structure and the second resonant structure are set apart in a first direction, so that the first resonator and second resonator of each structure face each other.

Description

Radio Control Board

[0001] The present disclosure relates to a radio wave control board.

[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.

[0003] JP 2015-231182 A

[0004] The radio wave control plate of the present disclosure 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 including a first resonator extending in the first surface direction and a second resonator formed on the same plane as the first resonator and electromagnetically connected to the reference conductor, and including first and second resonant structures that are rotationally symmetric in the first surface direction, and the first resonant structure and the second resonant structure are arranged with a gap in the first direction so that the first resonator and the second resonator face each other.

[0005] The radio wave control board of the present disclosure is a radio wave control board including 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, wherein the plurality of unit structures include first and second resonant structures each having a λ / 2 resonator extending in the first surface direction and a λ / 4 resonator formed on the same plane as the λ / 2 resonator and electromagnetically connected to the reference conductor, and the first resonant structure and the second resonant structure are arranged with a gap in the first direction so that the λ / 2 resonator and the λ / 4 resonator face each other.

[0006] The radio wave control plate of the present disclosure is a radio wave control plate including 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, wherein the plurality of unit structures include first and second resonant structures each having a λ / 2 resonator extending in the first surface direction and a λ / 4 resonator formed on the same plane as the λ / 2 resonator and electromagnetically connected to the reference conductor, wherein the first resonant structure and the second resonant structure are arranged with a gap in the first direction so that the λ / 2 resonator and the λ / 4 resonator face each other, and the radio wave control plate has four resonant frequencies, namely, a first resonant frequency, a second resonant frequency, a third resonant frequency, and a fourth resonant frequency, in order from the low frequency side, and is configured to generate two attenuation poles between the third resonant frequency and the fourth resonant frequency to form a pass band of a bandpass filter.

[0007] The radio wave control plate of the present disclosure is a radio wave control plate including 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, wherein the plurality of unit structures include first and second resonant structures each having a λ / 2 resonator extending in the first surface direction and a λ / 4 resonator formed on the same plane as the λ / 2 resonator and electromagnetically connected to the reference conductor, wherein the first resonant structure and the second resonant structure are arranged with a gap in the first direction so that the λ / 2 resonator and the λ / 4 resonator face each other, and the radio wave control plate has four resonant frequencies, namely, a first resonant frequency, a second resonant frequency, a third resonant frequency, and a fourth resonant frequency, in order from the low frequency side, and is configured to generate two attenuation poles between the first resonant frequency and the third resonant frequency to form a pass band of a bandpass filter.

[0008] The radio wave control plate of the present disclosure includes a plurality of first unit structures arranged in a first surface direction, a plurality of second unit structures arranged in the first surface direction, and a reference conductor that serves as a reference potential for the plurality of first unit structures and the plurality of second unit structures, wherein the plurality of first unit structures include first and second resonant structures each having a λ / 2 resonator extending in the first surface direction and a λ / 4 resonator formed on the same plane as the λ / 2 resonator and electromagnetically connected to the reference conductor, wherein the first resonant structure and the second resonant structure are arranged with a gap in the first direction so that the λ / 2 resonator and the λ / 4 resonator face each other, and the plurality of second unit structures include first and second patch conductors extending in the first surface direction, and the first patch conductor and the second patch conductor are arranged with a gap in the first direction so that they face each other.

[0009] FIG. 1 is a diagram for explaining an overview of the radio wave refraction plate according to the first embodiment. FIG. 2 is a diagram showing an example of the configuration of a unit structure according to the first embodiment. FIG. 3 is a diagram showing an example of the configuration of a first resonant structure according to the first embodiment. FIG. 4 is a diagram showing an example of the configuration of a second resonant structure according to the first embodiment. FIG. 5 is a diagram for explaining the positional relationship between the second resonator of the first resonant structure and the second resonator of the second resonant structure according to the first example of the second embodiment. FIG. 6 is a diagram showing the reflection characteristics and transmission characteristics of a unit structure according to the first example of the second embodiment. FIG. 7 is a diagram showing the phase change amount of a unit structure according to the first example of the second embodiment. FIG. 8 is a diagram for explaining the positional relationship between the second resonator of the first resonant structure and the second resonator of the second resonant structure according to the second example of the second embodiment. FIG. 9 is a diagram showing the reflection characteristics and transmission characteristics of a unit structure according to the second example of the second embodiment. FIG. 10 is a diagram showing the phase change amount of a unit structure according to the second example of the second embodiment. FIG. 11 is a diagram showing an example of the configuration of a unit structure according to a comparative example. FIG. 12 is a diagram for explaining an example of the arrangement of unit structures in a radio wave control plate according to the third embodiment. FIG. 13 is a diagram for explaining the resonant structure of the unit structure according to the fourth embodiment. FIG. 14 is a diagram showing the reflection characteristics and transmission characteristics of the unit structure according to the fourth embodiment. FIG. 15 is a diagram for explaining the resonant structure of the unit structure according to the fifth embodiment. FIG. 16 is a diagram showing the reflection characteristics and transmission characteristics of the unit structure according to the fifth embodiment. FIG. 17A is a diagram showing a simulation result illustrating the magnetic field strength of the unit structure according to the fifth embodiment for radio waves of a first frequency. FIG. 17B is a diagram showing a simulation result illustrating the magnetic field strength of the unit structure according to the fifth embodiment for radio waves of a second frequency. FIG. 17C is a diagram showing a simulation result illustrating the magnetic field strength of the unit structure according to the fifth embodiment for radio waves of a third frequency. FIG. 17D is a diagram showing a simulation result illustrating the magnetic field strength of the unit structure according to the fifth embodiment for radio waves of a fourth frequency. FIG. 17E is a diagram showing a simulation result illustrating the magnetic field strength of the unit structure according to the fifth embodiment for radio waves of a fifth frequency. FIG. 17F is a diagram showing a simulation result illustrating the magnetic field strength of the unit structure according to the fifth embodiment for radio waves of a sixth frequency. FIG. 18 is a diagram showing the phase change amount of the unit structure according to the fifth embodiment.Fig. 19 is a diagram showing a configuration example of a first resonant structure according to another embodiment. Fig. 20 is a diagram showing a configuration example of a second resonant structure according to another embodiment. Fig. 21 is a diagram showing reflection characteristics and transmission characteristics of a unit structure according to another embodiment. Fig. 22 is a diagram showing a phase change amount of a unit structure according to another embodiment.

[0010] Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. Note that the present invention is not limited to this embodiment, and in the following embodiments, the same components are designated by the same reference numerals, and redundant explanations will be omitted.

[0011] In the following description, an XYZ Cartesian coordinate system is set, and the positional relationship of each part will be described 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 including the X axis and Y axis will be referred to as the XY plane as appropriate, the plane including the X axis and Z axis will be referred to as the XZ plane as appropriate, and the plane including the Y axis and Z axis 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.

[0012] [First embodiment] (Radio wave refraction plate) An overview of a radio wave refraction plate according to a first embodiment will be described with reference to Fig. 1. Fig. 1 is a diagram for explaining the overview of the radio wave refraction plate according to the first embodiment.

[0013] The radio wave refraction plate 1 is a plate-like member configured to allow radio waves transmitted from a base station to pass through. The radio wave refraction plate 1 is configured, for example, to receive radio waves transmitted from a base station, refract the radio waves at a predetermined angle, and then emit the radio waves. The radio wave refraction plate 1 can be configured, for example, from a metamaterial that changes the phase of an incident wave. The radio wave refraction plate 1 is a type of radio wave control plate.

[0014] As shown in FIG. 1, the radio wave refraction plate 1 may include, for example, a substrate 2, a unit structure 10a, a unit structure 10b, a unit structure 10c, and a unit structure 10d.

[0015] The unit structures 10a, 10b, 10c, and 10d may be formed on a substrate 2. The substrate 2 may be, for example, a dielectric substrate made of a dielectric material. The substrate 2 may have, for example, but is not limited to, a rectangular shape. The unit structures 10a, 10b, 10c, and 10d may be arranged two-dimensionally on the substrate 2.

[0016] Specifically, in the substrate 2, a plurality of unit structures 10a may be installed, for example, on the bottom row of the substrate 2. In the substrate 2, a plurality of unit structures 10b may be installed in a row on the row above the row on which the unit structures 10a are installed. In the substrate 2, a plurality of unit structures 10c may be installed in a row on the row above the row on which the unit structures 10b are installed. In the substrate 2, a plurality of unit structures 10d may be installed in a row on the row above the row on which the unit structures 10c are installed. In other words, the radio wave refraction plate 1 may have a structure in which a plurality of unit structures of different sizes are periodically arranged. The unit structures 10a to 10d may each vary in the frequency band and the amount of phase change of the radio waves they change. Although the unit structures 10a to 10d each have a rectangular shape, this is not limiting. By changing the sizes and shapes of the unit structures 10a, 10b, 10c, and 10d, the frequency band and the amount of phase change of the radio waves to be refracted can be adjusted.

[0017] (Unit Structure) Fig. 2 illustrates an example of the configuration of a unit structure according to the first embodiment. Fig. 2 is a diagram illustrating an example of the configuration of a unit structure according to the first embodiment.

[0018] The unit structure 10 includes a substrate 2, a first resonant structure 11, and a second resonant structure 12. The unit structure 10 has a two-layer structure in which two resonant structures are stacked in two layers. The first resonant structure 11 and the second resonant structure 12 are arranged to face each other with a gap in the Z direction. The Z direction is a type of first direction.

[0019] The first resonant structure 11 may be formed in a rectangular shape. The shape of the first resonant structure 11 is not limited to a rectangular shape. The first resonant structure 11 includes a reference conductor 20, a first resonator 21, a second resonator 22, a second resonator 23, a second resonator 24, and a second resonator 25.

[0020] The second resonant structure 12 may be formed in a rectangular shape. The shape of the second resonant structure 12 is not limited to a rectangular shape. The second resonant structure 12 includes a reference conductor 30, a first resonator 31, a second resonator 32, a second resonator 33, a second resonator 34, and a second resonator 35.

[0021] The reference conductor 20 and the reference conductor 30 face each other. The first resonator 21 and the first resonator 31 face each other. The second resonator 22 and the second resonator 32 face each other. The second resonator 23 and the second resonator 33 face each other. The second resonator 24 and the second resonator 34 face each other. The second resonator 25 and the second resonator 35 face each other.

[0022] (Resonant Structure) A configuration example of the first resonant structure according to the first embodiment will be described with reference to Fig. 3. Fig. 3 is a diagram showing a configuration example of the first resonant structure according to the first embodiment.

[0023] In the first resonant structure 11, the reference conductor 20, the first resonator 21, the second resonator 22, the second resonator 23, the second resonator 24, and the second resonator 25 are formed on the same XY plane.

[0024] The reference conductor 20 is formed in the shape of a rectangular frame extending in the XY plane. The shape of the reference conductor 20 is not limited. The reference conductor 20 is formed so as to surround the first resonator 21, the second resonator 22, the second resonator 23, the second resonator 24, and the second resonator 25. The reference conductor 20 is electromagnetically connected to a reference potential. The reference potential is, but is not limited to, ground.

[0025] The first resonator 21 is formed of a conductor. The first resonator 21 is formed, for example, in the center of the inner circumference of the reference conductor 20. The first resonator 21 is formed in the XY plane. The first resonator 21 is not electromagnetically connected to the reference conductor 20. That is, the first resonator 21 is configured as a λ / 2 resonator. The first resonator 21 is, for example, a rectangular patch conductor extending in the XY plane, but is not limited to this. The first resonator 21 has a hole 21a in the center. The first resonator 21 does not have to have the hole 21a. The capacitance value of the first resonant structure 11 can be adjusted by adjusting the size of the hole 21a of the first resonator 21.

[0026] The second resonator 22 is formed of a conductor. The second resonator 22 is formed, for example, in the upper left corner of the inner circumference of the reference conductor 20. The second resonator 22 is formed in the XY plane. The second resonator 22 has a first conductor portion 221, a second conductor portion 222, and a third conductor portion 223. One end of the first conductor portion 221 is electromagnetically connected to the upper side of the reference conductor 20. The first conductor portion 221 extends in the +X direction. The other end of the first conductor portion 221 is bent parallel to the Y direction to form the second conductor portion 222. The second conductor portion 222 extends in the −Y direction. The tip of the second conductor portion 222 is bent parallel to the X direction to form the third conductor portion 223. The third conductor portion 223 extends in the −X direction. The tip of the third conductor portion 223 is not electromagnetically connected to the reference conductor 20. The second resonator 22 is configured as a λ / 4 resonator.

[0027] The second resonator 23 is formed of a conductor. The second resonator 23 is formed, for example, in the upper right corner of the inner circumference of the reference conductor 20. The second resonator 23 is formed in the XY plane. The second resonator 23 has a first conductor portion 231, a second conductor portion 232, and a third conductor portion 233. One end of the first conductor portion 231 is electromagnetically connected to the right side of the reference conductor 20. The first conductor portion 231 extends in the −Y direction. The other end of the first conductor portion 231 is bent parallel to the X direction to form the second conductor portion 232. The second conductor portion 232 extends in the −X direction. The tip of the second conductor portion 232 is bent parallel to the Y direction to form the third conductor portion 233. The third conductor portion 233 extends in the +Y direction. The tip of the third conductor portion 233 is not electromagnetically connected to the reference conductor 20. The second resonator 23 is configured as a λ / 4 resonator.

[0028] The second resonator 24 is formed of a conductor. The second resonator 24 is formed, for example, in the lower right corner of the inner circumference of the reference conductor 20. The second resonator 24 is formed in the XY plane. The second resonator 24 has a first conductor portion 241, a second conductor portion 242, and a third conductor portion 243. One end of the first conductor portion 241 is electromagnetically connected to the lower side of the reference conductor 20. The first conductor portion 241 extends in the −X direction. The other end of the first conductor portion 241 is bent parallel to the Y direction to form the second conductor portion 242. The second conductor portion 242 extends in the +Y direction. The tip of the second conductor portion 242 is bent parallel to the X direction to form the third conductor portion 243. The third conductor portion 243 extends in the +X direction. The tip of the third conductor portion 243 is not electromagnetically connected to the reference conductor 20. The second resonator 24 is configured as a λ / 4 resonator.

[0029] The second resonator 25 is formed of a conductor. The second resonator 25 is formed, for example, in the lower left corner of the inner circumference of the reference conductor 20. The second resonator 25 is formed in the XY plane. The second resonator 25 has a first conductor portion 251, a second conductor portion 252, and a third conductor portion 253. One end of the first conductor portion 251 is electromagnetically connected to the left side of the reference conductor 20. The first conductor portion 251 extends in the +Y direction. The other end of the first conductor portion 251 is bent parallel to the X direction to form the second conductor portion 252. The second conductor portion 252 extends in the +X direction. The tip of the second conductor portion 252 is bent parallel to the Y direction to form the third conductor portion 253. The third conductor portion 253 extends in the -Y direction. The tip of the third conductor portion 253 is not electromagnetically connected to the reference conductor 20. The second resonator 25 is configured as a λ / 4 resonator.

[0030] The second resonators 22, 23, 24, and 25 each have the same shape. The shapes of the second resonators 22, 23, 24, and 25 are also called hairpin shapes. The shapes of the second resonators 22, 23, 24, and 25 are not limited to the shape shown in FIG. 3 . It is sufficient that the second resonators 22, 23, 24, and 25 are formed in a rotationally symmetric shape in the XY plane.

[0031] That is, in the first resonant structure 11, two different types of resonators, a λ / 2 resonator and a λ / 4 resonator, are formed on the same plane.

[0032] A configuration example of the second resonant structure according to the first embodiment will be described with reference to Fig. 4. Fig. 4 is a diagram showing a configuration example of the second resonant structure according to the first embodiment.

[0033] In the second resonant structure 12, the reference conductor 30, the first resonator 31, the second resonator 32, the second resonator 33, the second resonator 34, and the second resonator 35 are formed on the same XY plane.

[0034] The reference conductor 30 is formed in the shape of a rectangular frame extending in the XY plane. The shape of the reference conductor 30 is not limited. The reference conductor 30 is formed so as to surround the first resonator 31, the second resonator 32, the second resonator 33, the second resonator 34, and the second resonator 35. The reference conductor 20 is electromagnetically connected to a reference potential. The reference potential is, but is not limited to, ground.

[0035] The first resonator 31 is formed of a conductor. The first resonator 31 is formed, for example, in the center of the inner circumference of the reference conductor 30. The first resonator 31 is formed in the XY plane. The first resonator 31 is not electromagnetically connected to the reference conductor 30. That is, the first resonator 31 is configured as a λ / 2 resonator. The first resonator 31 is, for example, a rectangular patch conductor extending in the XY plane, but is not limited to this. The first resonator 31 has a hole 31a in the center. The first resonator 31 does not have to have the hole 31a. The capacitance value of the second resonant structure 12 can be adjusted by adjusting the size of the hole 31a of the first resonator 31.

[0036] The second resonator 32 is formed of a conductor. The second resonator 32 is formed, for example, in the upper left corner of the inner circumference of the reference conductor 30. The second resonator 32 is formed in the XY plane. The second resonator 32 has a first conductor portion 321, a second conductor portion 322, and a third conductor portion 323. One end of the first conductor portion 321 is electromagnetically connected to the left side of the reference conductor 20. The first conductor portion 321 extends in the +Y direction. The other end of the first conductor portion 321 is bent parallel to the X direction to form the second conductor portion 322. The second conductor portion 322 extends in the −X direction. The tip of the second conductor portion 322 is bent parallel to the Y direction to form the third conductor portion 323. The third conductor portion 323 extends in the −Y direction. The tip of the third conductor portion 323 is not electromagnetically connected to the reference conductor 30. The second resonator 32 is configured as a λ / 4 resonator.

[0037] The second resonator 33 is formed of a conductor. The second resonator 33 is formed, for example, in the upper right corner of the inner circumference of the reference conductor 20. The second resonator 33 is formed in the XY plane. The second resonator 33 has a first conductor portion 331, a second conductor portion 332, and a third conductor portion 333. One end of the first conductor portion 331 is electromagnetically connected to the upper edge of the reference conductor 20. The first conductor portion 331 extends in the +X direction. The other end of the first conductor portion 331 is bent parallel to the Y direction to form the second conductor portion 332. The second conductor portion 332 extends in the −Y direction. The tip of the second conductor portion 332 is bent parallel to the X direction to form the third conductor portion 333. The third conductor portion 333 extends in the −X direction. The tip of the third conductor portion 333 is not electromagnetically connected to the reference conductor 30. The second resonator 33 is configured as a λ / 4 resonator.

[0038] The second resonator 34 is formed of a conductor. The second resonator 34 is formed, for example, in the lower right corner of the inner circumference of the reference conductor 20. The second resonator 34 is formed in the XY plane. The second resonator 34 has a first conductor portion 341, a second conductor portion 342, and a third conductor portion 343. One end of the first conductor portion 341 is electromagnetically connected to the right side of the reference conductor 20. The first conductor portion 341 extends in the −Y direction. The other end of the first conductor portion 341 is bent parallel to the X direction to form the second conductor portion 342. The second conductor portion 342 extends in the +X direction. The tip of the second conductor portion 342 is bent parallel to the Y direction to form the third conductor portion 343. The third conductor portion 343 extends in the +Y direction. The tip of the third conductor portion 343 is not electromagnetically connected to the reference conductor 30. The second resonator 34 is configured as a λ / 4 resonator.

[0039] The second resonator 35 is formed of a conductor. The second resonator 35 is formed, for example, in the lower left corner of the inner circumference of the reference conductor 20. The second resonator 35 is formed in the XY plane. The second resonator 35 has a first conductor portion 351, a second conductor portion 352, and a third conductor portion 353. One end of the first conductor portion 351 is electromagnetically connected to the lower side of the reference conductor 20. The first conductor portion 351 extends in the −X direction. The other end of the first conductor portion 351 is bent parallel to the Y direction to form the second conductor portion 352. The second conductor portion 352 extends in the +X direction. The tip of the second conductor portion 352 is bent parallel to the Y direction to form the third conductor portion 353. The third conductor portion 353 extends in the −Y direction. The tip of the third conductor portion 353 is not electromagnetically connected to the reference conductor 30. The second resonator 35 is configured as a λ / 4 resonator.

[0040] The second resonators 32, 33, 34, and 35 each have the same shape. The shapes of the second resonators 32, 33, 34, and 35 are also called hairpin shapes. The shapes of the second resonators 32, 33, 34, and 35 are not limited to the shape shown in FIG. 4 . It is sufficient that the second resonators 32, 33, 34, and 35 are formed in a rotationally symmetric shape in the XY plane.

[0041] That is, in the second resonant structure 12, two different types of resonators, a λ / 2 resonator and a λ / 4 resonator, are formed on the same plane.

[0042] 3 and 4 , the second resonator 22 and the second resonator 32 facing the second resonator 22 have the same shape. The second resonators 22 and 32 are formed so as not to overlap with each other in the XY plane. For example, the second resonator 32 is formed in the second resonant structure 12 in a state in which it is inverted and rotated with respect to the second resonator 22 formed in the first resonant structure 11. Specifically, the second resonator 32 is formed in the second resonant structure 12 in a state in which the second resonator 22 is inverted and rotated by 90°.

[0043] 3 and 4 , the second resonator 23 and the second resonator 33 facing the second resonator 23 have the same shape. The second resonators 23 and 33 are formed so as not to overlap with each other in the XY plane. For example, the second resonator 33 is formed in the second resonator structure 12 in a state inverted and rotated with respect to the second resonator 23 formed in the first resonator structure 11. Specifically, the second resonator 33 is formed in the second resonator structure 12 in a state inverted and rotated by 90° with respect to the second resonator 23.

[0044] 3 and 4 , the second resonator 24 and the second resonator 34 facing the second resonator 24 have the same shape. The second resonators 24 and 34 are formed so as not to overlap with each other in the XY plane. For example, the second resonator 34 is formed in the second resonator structure 12 in a state in which it is inverted and rotated with respect to the second resonator 24 formed in the first resonator structure 11. Specifically, the second resonator 34 is formed in the second resonator structure 12 in a state in which it is inverted and rotated by 90 degrees with respect to the second resonator 24.

[0045] 3 and 4 , the second resonator 25 and the second resonator 35 facing the second resonator 25 have the same shape. The second resonators 25 and 35 are formed so as not to overlap with each other in the XY plane. For example, the second resonator 35 is formed in the second resonator structure 12 in a state in which it is inverted and rotated with respect to the second resonator 25 formed in the first resonator structure 11. Specifically, the second resonator 35 is formed in the second resonator structure 12 in a state in which it is inverted and rotated by 90° with respect to the second resonator 25.

[0046] As described above, in this embodiment, the unit structure 10 has a two-layer structure made up of the first resonant structure 11 and the second resonant structure 12. In this embodiment, by using the unit structure 10, it is possible to provide a thin radio wave control plate that has a large amount of phase change and is compatible with both polarizations.

[0047] [Second embodiment] (Comparison of characteristics) In this embodiment, by adjusting the size and degree of overlap of the second resonators 22 to 25 and the second resonators 32 to 35, it is possible to adjust the amount of phase change of the radio wave and the frequency band through which the radio wave is transmitted.

[0048] (First Example) The positional relationship between the second resonator of the first resonant structure and the second resonator of the second resonant structure in the unit structure according to the first example of the second embodiment will be described with reference to Fig. 5. Fig. 5 is a diagram for explaining the positional relationship between the second resonator of the first resonant structure and the second resonator of the second resonant structure according to the first example of the second embodiment.

[0049] Figure 5 shows the positional relationship in the XY plane when the unit structure 10A is viewed from above, among the reference conductor 20A, the first resonator 21A, the second resonator 22A, the second resonator 23A, the second resonator 24A, the second resonator 25A, the reference conductor 30A, the first resonator 31A, the second resonator 32A, the second resonator 33A, the second resonator 34A, and the second resonator 35A.

[0050] The reference conductor 20A and the reference conductor 30A are formed to overlap on the XY plane, and the first resonator 21A and the first resonator 31A are formed to overlap on the XY plane.

[0051] The second resonator 22A has a first conductor portion 221A, a second conductor portion 222A, and a third conductor portion 223A. The second resonator 32A has a first conductor portion 321A, a second conductor portion 322A, and a third conductor portion 323A. The second resonator 22A and the second resonator 23A are formed to face each other. The second resonator 22A is formed so that the tip end of the third conductor portion 223A overlaps the first conductor portion 321A. The second resonator 32A is formed so that the tip end of the third conductor portion 323A overlaps the first conductor portion 221A.

[0052] The second resonator 23A has a first conductor portion 231A, a second conductor portion 232A, and a third conductor portion 233A. The second resonator 33A has a first conductor portion 331A, a second conductor portion 332A, and a third conductor portion 333A. The second resonator 23A and the second resonator 33A are formed to face each other. The second resonator 23A is formed so that the tip end of the third conductor portion 233A overlaps the first conductor portion 331A. The second resonator 33A is formed so that the tip end of the third conductor portion 333A overlaps the first conductor portion 231A.

[0053] The second resonator 24A has a first conductor portion 241A, a second conductor portion 242A, and a third conductor portion 243A. The second resonator 34A has a first conductor portion 341A, a second conductor portion 342A, and a third conductor portion 343A. The second resonator 24A and the second resonator 34A are formed to face each other. The second resonator 24A is formed so that the tip end of the third conductor portion 243A overlaps the first conductor portion 341A. The second resonator 34A is formed so that the tip end of the third conductor portion 343A overlaps the first conductor portion 241A.

[0054] The second resonator 25A has a first conductor portion 251A, a second conductor portion 252A, and a third conductor portion 253A. The second resonator 35A has a first conductor portion 351A, a second conductor portion 352A, and a third conductor portion 353A. The second resonator 25A and the second resonator 35A are formed to face each other. The second resonator 25A is formed so that the tip end of the third conductor portion 253A overlaps the first conductor portion 351A. The second resonator 35A is formed so that the tip end of the third conductor portion 353A overlaps the first conductor portion 251A.

[0055] In this embodiment, the amount of phase change can be controlled by adjusting the position of the attenuation pole that appears in the transmission characteristics of the unit structure 10A.

[0056] The radio wave refraction plate 1 according to this embodiment has two or more resonant frequencies. The radio wave refraction plate 1 is configured to form the passband of a bandpass filter using some of the two or more resonant frequencies. Specifically, the radio wave refraction plate 1 has four resonant frequencies, namely, a first resonant frequency, a second resonant frequency, a third resonant frequency, and a fourth resonant frequency, in order from the low frequency side. The radio wave refraction plate 1 is configured to form the passband of a bandpass filter using two resonant frequencies on the high frequency side.

[0057] The characteristics of the unit structure according to the first example of the second embodiment will be described with reference to Fig. 6 and Fig. 7. Fig. 6 is a diagram showing the reflection characteristics and transmission characteristics of the unit structure according to the first example of the second embodiment. Fig. 7 is a diagram showing the phase change amount of the unit structure according to the first example of the second embodiment.

[0058] 6, the horizontal axis represents frequency (GHz) and the vertical axis represents gain (dB). Graph 101 represents the transmission characteristics of unit structure 10A. Graph 102 represents the reflection characteristics of unit structure 10A.

[0059] As shown in graph 101, the unit structure 10A has two attenuation poles, namely, attenuation pole P1 and attenuation pole P2, in its transmission characteristics. In this embodiment, the pass band of the unit structure 10A as a band-pass filter can be adjusted by adjusting the positions at which the attenuation poles P1 and P2 are generated.

[0060] As shown in the graph 102, the unit structure 10A has four resonant frequencies: a first resonant frequency f1, a second resonant frequency f2, a third resonant frequency f3, and a fourth resonant frequency f4.

[0061] The attenuation poles P1 and P2 are formed in a frequency band between the first resonant frequency f1 and the fourth resonant frequency f4. The attenuation poles P1 and P2 are formed in a frequency band between the first resonant frequency f1 and the third resonant frequency f3. In this embodiment, the attenuation poles P1 and P2 are overlapped in frequency to form a single apparent attenuation pole. This allows for the formation of a region 201 in which the reflection characteristic is −10 dB or less. The region 201 serves as a pass band for a bandpass filter. The region 201 may be, for example, a band from approximately 31.00 GHz to 33.00 GHz, but is not limited thereto. The region 201 may include two resonant frequencies on the higher frequency side, the third resonant frequency f3 and the fourth resonant frequency f4. In other words, the first example of the first embodiment can be said to form a pass band using two resonant frequencies, the third resonant frequency f3 and the fourth resonant frequency f4.

[0062] As shown in Fig. 7, unit structure 10A can change the phase from 100° to 0° in region 201. By using unit structure 10A, the radio wave control board can be made thinner.

[0063] (Second Example) The positional relationship between the second resonator of the first resonant structure and the second resonator of the second resonant structure in a unit structure according to a second example of the second embodiment will be described with reference to Fig. 8. Fig. 8 is a diagram for explaining the positional relationship between the second resonator of the first resonant structure and the second resonator of the second resonant structure according to the second example of the second embodiment.

[0064] FIG. 8 shows the positional relationship in the XY plane of the reference conductor 20B, the first resonator 21B, the second resonator 22B, the second resonator 23B, the second resonator 24B, the second resonator 25B, the reference conductor 30B, the first resonator 31B, the second resonator 32B, the second resonator 33B, the second resonator 34B, and the second resonator 35B when the unit structure 10B is viewed from above.

[0065] The first resonator 21B differs from the first resonator 21A shown in Fig. 5 in that it has a hole 21Ba. The first resonator 31B differs from the first resonator 21A shown in Fig. 5 in that it has a hole 31Ba.

[0066] The second resonator 22B has a first conductor portion 221B, a second conductor portion 222B, and a third conductor portion 223B. The second resonator 32B has a first conductor portion 321B, a second conductor portion 322B, and a third conductor portion 323B. The second resonator 22B differs from the second resonator 22A shown in FIG. 5 in that the tip end of the third conductor portion 223B is formed to overlap the tip end of the third conductor portion 323B of the second resonator 32B.

[0067] The second resonator 23B has a first conductor portion 231B, a second conductor portion 232B, and a third conductor portion 233B. The second resonator 33B has a first conductor portion 331B, a second conductor portion 332B, and a third conductor portion 333B. The second resonator 23B differs from the second resonator 23A shown in FIG. 5 in that the tip end of the third conductor portion 233B is formed to overlap the tip end of the third conductor portion 333B of the second resonator 33B.

[0068] The second resonator 24B has a first conductor portion 241B, a second conductor portion 242B, and a third conductor portion 243B. The second resonator 34B has a first conductor portion 341B, a second conductor portion 342B, and a third conductor portion 343B. The second resonator 24B differs from the second resonator 24A shown in FIG. 5 in that the tip end of the third conductor portion 243B is formed to overlap the tip end of the third conductor portion 343B of the second resonator 34B.

[0069] The second resonator 25B has a first conductor portion 251B, a second conductor portion 252B, and a third conductor portion 253B. The second resonator 35B has a first conductor portion 351B, a second conductor portion 352B, and a third conductor portion 353B. The second resonator 25B differs from the second resonator 25A shown in FIG. 5 in that the tip end of the third conductor portion 253B of the second resonator 35B is formed to overlap the tip end of the third conductor portion 353B of the second resonator 35B.

[0070] The characteristics of the unit structure according to the second example of the second embodiment will be described with reference to Fig. 9 and Fig. 10. Fig. 9 is a diagram showing the reflection characteristics and transmission characteristics of the unit structure according to the second example of the second embodiment. Fig. 10 is a diagram showing the phase change amount of the unit structure according to the second example of the second embodiment.

[0071] 9, the horizontal axis represents frequency [GHz] and the vertical axis represents gain [dB]. Graph 104 shows the transmission characteristics of unit structure 10B. Graph 105 shows the reflection characteristics of unit structure 10B.

[0072] As shown in the graph 104, the unit structure 10B has two attenuation poles, an attenuation pole P3 and an attenuation pole P4, in its transmission characteristics.

[0073] As shown in graph 105, unit structure 10B has four resonant frequencies: a first resonant frequency f5, a second resonant frequency f6, a third resonant frequency f7, and a fourth resonant frequency f8.

[0074] The attenuation pole P3 and the attenuation pole P4 are formed in a frequency band between the first resonant frequency f1 and the fourth resonant frequency f4. The attenuation pole P3 is formed in a frequency band between the first resonant frequency f5 and the second resonant frequency f6. The attenuation pole P4 is formed in a frequency band between the second resonant frequency f6 and the third resonant frequency f7. In this embodiment, the attenuation pole P3 and the attenuation pole P4 are adjusted to overlap in frequency so that they appear to be a single attenuation pole. This allows the formation of a region 202 in which the reflection characteristic is −5 dB or less. The region 202 serves as the pass band of the bandpass filter. The region 202 is, for example, a band from approximately 28.50 GHz to 31.00 GHz, but is not limited to this.

[0075] 10 , unit structure 10B can change the phase of the radio wave in a range from 180° to 0° in region 202. By using unit structure 10B, the radio wave control board can be made thinner.

[0076] Third Embodiment Next, a third embodiment will be described. In the third embodiment, a radio wave control plate capable of changing the phase of radio waves over a wide range can be configured by using unit structure 10A shown in Fig. 5 or unit structure 10B shown in Fig. 8.

[0077] Before describing the third embodiment, a configuration example of a unit structure according to a comparative example will be described with reference to Fig. 11. Fig. 11 is a diagram showing a configuration example of a unit structure according to a comparative example.

[0078] The unit structure 10C includes a substrate 2, a first resonant structure 11C, and a second resonant structure 12C. The unit structure 10C has a two-layer structure in which two resonant structures are stacked in two layers. The first resonant structure 11C and the second resonant structure 12C are arranged to face each other with a gap in the Z direction.

[0079] The first resonant structure 11C may be formed in a rectangular shape. The shape of the first resonant structure 11C is not limited to a rectangular shape. The first resonant structure 11C includes a reference conductor 20C and a first resonator 21C. The reference conductor 20C is formed to surround the first resonator 21C. The first resonator 21C is a λ / 2 resonator.

[0080] The second resonant structure 12C may be formed in a rectangular shape. The shape of the second resonant structure 12C is not limited to a rectangular shape. The second resonant structure 12C includes a reference conductor 30C and a first resonator 31C. The reference conductor 30C is formed to surround the first resonator 31C. The first resonator 31C is a λ / 2 resonator.

[0081] The reference conductor 20C and the reference conductor 30C face each other. The first resonator 21C and the first resonator 31C face each other.

[0082] The unit structure 10C can change the phase of radio waves, for example, in a range from 15° to −130°. That is, the range of phase change of the unit structure 10C is different from that of the unit structure 10A shown in FIG. 5 or the unit structure 10B shown in FIG. 8 . Therefore, by combining the unit structure 10C with unit structures such as the unit structures 10A and 10B, in which λ / 2 resonators and λ / 4 resonators are formed in the same plane, a radio wave control plate can be constructed that can change the phase of radio waves over a wide range. As an example of this, in the range from 15 GHz to 22 GHz corresponding to f1 to f2 in FIG. 6 , the phase characteristic in FIG. 7 shows a phase change from 0° to −100°. In this way, by using only λ / 2 resonators and appropriately designing f1 and f2, a passband with a negative phase sign can be achieved.

[0083] An example of the arrangement of unit structures in a radio wave control board according to the third embodiment will be described with reference to Fig. 12. Fig. 12 is a diagram for explaining an example of the arrangement of unit structures in a radio wave control board according to the third embodiment.

[0084] 12, the radio wave control board according to the third embodiment includes unit structures 10A, 10B, 10C, and 10D. In the radio wave control board according to the third embodiment, unit structures 10A, 10B, 10C, and 10D are arranged two-dimensionally in the XY plane.

[0085] In the unit structure 10D, the size of a first resonator 21D of a first resonant structure 11D is different from the size of the first resonator 21C shown in Fig. 11. In the unit structure 10D, the size of a first resonator 31D of a second resonant structure 12D is different from the size of the first resonator 31C shown in Fig. 11.

[0086] That is, the radio wave control plate according to the third embodiment includes two types of unit structures: unit structures 10A and 10B each having two resonators, a λ / 2 resonator and a λ / 4 resonator, formed on the same plane, and unit structures 10C and 10D each having only a λ / 2 resonator formed on the same plane. The range of phase angle to be shifted differs between unit structures 10A and 10B and unit structures 10C and 10D. In the third embodiment, by arranging four types of unit structures, 10A to 10D, in the radio wave control plate, a radio wave control plate that can cover a range from 0° to 360° can be constructed. For example, by arranging four unit structures with corresponding phase shifts of 0°, 90°, 180°, and 270°, each with a phase shift interval of 90°, a radio wave control plate that can cover a range from 0° to 360° can be constructed. In other words, a unit cell having a phase characteristic realized by f1 and f2 and a unit cell having a phase characteristic realized by f3 and f4 are combined to form a radio wave control board that can cover a range from 0° to 360°.

[0087] [Fourth Embodiment] A fourth embodiment will be described. In the first and second embodiments, a unit structure including a resonant structure in which two types of resonators, a λ / 2 resonator and a λ / 4 resonator, are formed on the same plane has been described. In the present disclosure, the resonant structure included in the unit structure may include two types of λ / 2 resonators.

[0088] The resonant structure of the unit structure according to the fourth embodiment will be described with reference to Fig. 13. Fig. 13 is a diagram for explaining the resonant structure of the unit structure according to the fourth embodiment.

[0089] The first resonant structure 11E of the unit structure according to the fourth embodiment includes a reference conductor 20E, and resonators 40, 41, 42, 43, 44, and 45. The second resonant structure (not shown) of the unit structure according to the fourth embodiment has the same configuration as the first resonant structure 11E, and therefore will not be described.

[0090] The resonator 40 includes a first conductor portion 401 , a second conductor portion 402 , a third conductor portion 403 , and a fourth conductor portion 404 .

[0091] The first conductor portion 401 is formed parallel to the X direction. The second conductor portion 402 is formed parallel to the first conductor portion 401 and spaced apart in the Y direction from the first conductor portion 401. The third conductor portion 403 is formed parallel to the Y direction so as to electromagnetically connect one end of the first conductor portion 401 to one end of the second conductor portion 402. The first conductor portion 401, the second conductor portion 402, and the third conductor portion 403 form a U-shape in the XY plane. One end of the fourth conductor portion 404 is formed parallel to the X direction and located between the first conductor portion 401 and the second conductor portion 402. The other end of the fourth conductor portion 404 is bent parallel to the Y direction and electromagnetically connected to the third conductor portion 413. The first conductor portion 401, the second conductor portion 402, the third conductor portion 403, and the fourth conductor portion 404 are not electromagnetically connected to the reference conductor 20E. That is, the resonator 40 is configured as a λ / 2 resonator.

[0092] The resonator 41 includes a first conductor portion 411 , a second conductor portion 412 , a third conductor portion 413 , and a fourth conductor portion 414 .

[0093] The first conductor portion 411 is formed parallel to the Y direction. The second conductor portion 412 is formed parallel to the first conductor portion 411 and spaced apart in the X direction from the first conductor portion 411. The third conductor portion 413 is formed parallel to the X direction so as to electromagnetically connect one end of the first conductor portion 411 to one end of the second conductor portion 412. The first conductor portion 411, the second conductor portion 412, and the third conductor portion 413 form a U-shape in the XY plane. One end of the fourth conductor portion 414 is formed parallel to the Y direction and located between the first conductor portion 411 and the second conductor portion 412. The other end of the fourth conductor portion 414 is bent parallel to the X direction and electromagnetically connected to the third conductor portion 423. The first conductor portion 411, the second conductor portion 412, the third conductor portion 413, and the fourth conductor portion 414 are not electromagnetically connected to the reference conductor 20E. That is, the resonator 41 is configured as a λ / 2 resonator.

[0094] The resonator 42 includes a first conductor portion 421 , a second conductor portion 422 , a third conductor portion 423 , and a fourth conductor portion 424 .

[0095] The first conductor portion 421 is formed parallel to the X direction. The second conductor portion 422 is formed parallel to the first conductor portion 421 and spaced apart in the Y direction from the first conductor portion 421. The third conductor portion 423 is formed parallel to the Y direction so as to electromagnetically connect one end of the first conductor portion 421 to one end of the second conductor portion 422. The first conductor portion 421, the second conductor portion 422, and the third conductor portion 423 form a U-shape in the XY plane. One end of the fourth conductor portion 424 is formed parallel to the X direction and located between the first conductor portion 421 and the second conductor portion 422. The other end of the fourth conductor portion 424 is bent parallel to the Y direction and electromagnetically connected to the third conductor portion 433. The first conductor portion 421, the second conductor portion 422, the third conductor portion 423, and the fourth conductor portion 424 are not electromagnetically connected to the reference conductor 20E. That is, the resonator 42 is configured as a λ / 2 resonator.

[0096] The resonator 43 includes a first conductor portion 431 , a second conductor portion 432 , a third conductor portion 433 , and a fourth conductor portion 434 .

[0097] The first conductor portion 431 is formed parallel to the Y direction. The second conductor portion 432 is formed parallel to the first conductor portion 431 and spaced apart in the X direction from the first conductor portion 431. The third conductor portion 433 is formed parallel to the X direction so as to electromagnetically connect one end of the first conductor portion 431 to one end of the second conductor portion 432. The first conductor portion 431, the second conductor portion 432, and the third conductor portion 433 form a U-shape in the XY plane. One end of the fourth conductor portion 434 is formed parallel to the Y direction and located between the first conductor portion 431 and the second conductor portion 432. The other end of the fourth conductor portion 434 is bent parallel to the X direction and electromagnetically connected to the third conductor portion 403. The first conductor portion 431, the second conductor portion 432, the third conductor portion 433, and the fourth conductor portion 434 are not electromagnetically connected to the reference conductor 20E. That is, the resonator 43 is configured as a λ / 2 resonator.

[0098] The resonator 44 includes a second conductor 402 , a second conductor 422 , and a connecting conductor 441 .

[0099] The connecting conductor 441 is configured to electromagnetically connect the other end of the second conductor 402 and the other end of the second conductor 422. The connecting conductor 441 is not electromagnetically connected to the reference conductor 20E. That is, the resonator 44 is configured as a λ / 2 resonator.

[0100] The resonator 45 includes a second conductor 412 , a second conductor 432 , and a connecting conductor 451 .

[0101] The connecting conductor 451 is configured to electromagnetically connect the other end of the second conductor 412 and the other end of the second conductor 432. The connecting conductor 451 is not electromagnetically connected to the reference conductor 20E. That is, the resonator 44 is configured as a λ / 2 resonator.

[0102] That is, the first resonant structure 11E has six λ / 2 resonators.

[0103] The characteristics of the unit structure according to the fourth embodiment will be described with reference to Fig. 14. Fig. 14 is a diagram showing the reflection characteristics and transmission characteristics of the unit structure according to the fourth embodiment.

[0104] 14, the horizontal axis represents frequency [GHz] and the vertical axis represents gain [dB]. Graph 107 shows the transmission characteristics of the unit structure according to the fourth embodiment. Graph 108 shows the reflection characteristics of the unit structure.

[0105] As shown in graph 108, the unit structure of the fourth embodiment has six resonant frequencies: a first resonant frequency f11, a second resonant frequency f12, a third resonant frequency f13, a fourth resonant frequency f14, a fifth resonant frequency f15, and a sixth resonant frequency f16.

[0106] As shown in graph 107, the unit structure according to the fourth embodiment has four attenuation poles in its transmission characteristics: attenuation poles P5, P6, P7, and P8. In this embodiment, the pass band of the unit structure 10A as a band-pass filter can be adjusted by adjusting the positions at which each attenuation pole is generated.

[0107] Fifth Embodiment A fifth embodiment will now be described. The resonant structure according to the fifth embodiment includes a plurality of resonant portions that function as λ / 2 resonators in response to the frequency of radio waves received from the outside.

[0108] The resonant structure of the unit structure according to the fifth embodiment will be described with reference to Fig. 15. Fig. 15 is a diagram for explaining the resonant structure of the unit structure according to the fifth embodiment.

[0109] The first resonant structure 11F of the unit structure according to the fifth embodiment includes a reference conductor 20F, a patch conductor 60, a first conductor portion 71, a first conductor portion 72, a first conductor portion 73, a first conductor portion 74, a second conductor portion 81, a second conductor portion 82, a second conductor portion 83, a second conductor portion 84, a third conductor portion 91, a third conductor portion 92, a third conductor portion 93, a third conductor portion 94, a notch portion 60a, a notch portion 60b, a notch portion 60c, and a notch portion 60d. The patch conductor 60, the first conductor portion 71, the first conductor portion 72, the first conductor portion 73, the first conductor portion 74, the second conductor portion 81, the second conductor portion 82, the second conductor portion 83, the second conductor portion 84, the third conductor portion 91, the third conductor portion 92, the third conductor portion 93, and the third conductor portion 94 are formed in the reference conductor 20F. The second resonant structure (not shown) of the unit structure according to the fourth embodiment has the same configuration as the first resonant structure 11F, and therefore will not be described.

[0110] The patch conductor 60 is a moving body formed, for example, in a rectangular shape. A notch 60a is formed in the upper left of the patch conductor 60. A notch 60b is formed in the upper right of the patch conductor 60. A notch 60c is formed in the lower right of the patch conductor 60. A notch 60d is formed in the lower left of the patch conductor 60. The sizes and shapes of the notches 60a to 60d can be changed as desired depending on the design.

[0111] The first conductor portion 71 is formed in the upper left part of the patch conductor 60. The first conductor portion 71 is formed above the cutout portion 60a. The first conductor portion 71 is a conductor formed parallel to the Y direction. One end of the first conductor portion 71 and the patch conductor 60 are electromagnetically connected by the connecting conductor portion 71a.

[0112] The second conductor portion 81 is formed on the left side of the patch conductor 60. The second conductor portion 81 is formed on the left side of the cutout portion 60b. The second conductor portion 81 is a conductor formed parallel to the X direction. One end of the second conductor portion 81 is electromagnetically connected to the connection conductor portion 71a by the connection conductor portion 81a. The second conductor portion 81 is shorter than the first conductor portion 71.

[0113] The third conductor 91 is formed between the second conductor 81 and the cutout 60a. One end of the third conductor 91 is electromagnetically connected to the patch conductor 60, and the third conductor 91 is a conductor that extends parallel to the X direction toward the −X direction. The third conductor 91 is shorter than the second conductor 81.

[0114] That is, the lengths of the first conductor portion 71, the second conductor portion 81, and the third conductor portion 91 are longer in this order. The first conductor portion 71, the second conductor portion 81, and the third conductor portion 91 are formed orthogonally. The second conductor portion 81 and the third conductor portion 91 face each other. The second conductor portion 81 and the third conductor portion 91 are formed in parallel. The lengths of the first conductor portion 71, the second conductor portion 81, and the third conductor portion 91 can be changed as desired depending on the design.

[0115] The first conductor portion 72 is formed on the right side of the patch conductor 60. The first conductor portion 72 is formed on the right side of the cutout portion 60b. The first conductor portion 72 is a conductor formed parallel to the X direction. One end of the first conductor portion 72 and the patch conductor 60 are electromagnetically connected by a connecting conductor portion 72a.

[0116] The second conductor portion 82 is formed in the upper right portion of the patch conductor 60. The second conductor portion 82 is formed above the cutout portion 60b. The second conductor portion 82 is a conductor formed parallel to the Y direction. One end of the second conductor portion 82 and the connecting conductor portion 72a are electromagnetically connected by the connecting conductor portion 82a. The second conductor portion 82 is shorter than the first conductor portion 72.

[0117] The third conductor 92 is formed between the second conductor 82 and the cutout 60b. One end of the third conductor 92 is electromagnetically connected to the patch conductor 60, and the third conductor 92 is a conductor that extends parallel to the Y direction toward the +Y direction. The third conductor 92 is shorter than the second conductor 82.

[0118] That is, the lengths of the first conductor portion 72, the second conductor portion 82, and the third conductor portion 92 are longer in this order. The first conductor portion 72, the second conductor portion 82, and the third conductor portion 92 are formed orthogonally to each other. The second conductor portion 82 and the third conductor portion 92 face each other. The second conductor portion 82 and the third conductor portion 92 are formed in parallel to each other. The lengths of the first conductor portion 72, the second conductor portion 82, and the third conductor portion 92 can be changed as desired depending on the design.

[0119] The first conductor portion 73 is formed in the lower right part of the patch conductor 60. The first conductor portion 73 is formed in the lower part of the cutout portion 60c. The first conductor portion 73 is a conductor formed parallel to the Y direction. One end of the first conductor portion 73 and the patch conductor 60 are electromagnetically connected by a connecting conductor portion 73a.

[0120] The second conductor portion 83 is formed on the right side of the patch conductor 60. The second conductor portion 83 is formed on the right side of the cutout portion 60c. The second conductor portion 83 is a conductor formed parallel to the X direction. One end of the second conductor portion 83 is electromagnetically connected to the connection conductor portion 73a by the connection conductor portion 83a. The second conductor portion 83 is shorter than the first conductor portion 73.

[0121] The third conductor 93 is formed between the second conductor 83 and the cutout 60c. One end of the third conductor 93 is electromagnetically connected to the patch conductor 60, and the third conductor 93 is a conductor that extends parallel to the X direction toward the +X direction. The third conductor 93 is shorter than the second conductor 83.

[0122] That is, the lengths of the first conductor portion 73, the second conductor portion 83, and the third conductor portion 93 are longer in this order. The first conductor portion 73, the second conductor portion 83, and the third conductor portion 93 are formed orthogonally to each other. The second conductor portion 83 and the third conductor portion 93 face each other. The second conductor portion 83 and the third conductor portion 93 are formed in parallel to each other. The lengths of the first conductor portion 73, the second conductor portion 83, and the third conductor portion 93 can be changed as desired depending on the design.

[0123] The first conductor portion 74 is formed on the left side of the patch conductor 60. The first conductor portion 74 is formed on the left side of the cutout portion 60d. The first conductor portion 77 is a conductor formed parallel to the X direction. One end of the first conductor portion 74 and the patch conductor 60 are electromagnetically connected by the connecting conductor portion 74a.

[0124] The second conductor portion 84 is formed in the lower left part of the patch conductor 60. The second conductor portion 84 is formed in the lower part of the cutout portion 60d. The second conductor portion 84 is a conductor formed parallel to the Y direction. One end of the second conductor portion 84 and the connecting conductor portion 74a are electromagnetically connected by the connecting conductor portion 84a. The second conductor portion 84 is shorter than the first conductor portion 74.

[0125] The third conductor 94 is formed between the second conductor 84 and the cutout 60d. One end of the third conductor 94 is electromagnetically connected to the patch conductor 60, and the third conductor 94 is a conductor that extends parallel to the Y direction on the −Y direction side. The third conductor 94 is shorter than the second conductor 84.

[0126] That is, the lengths of the first conductor portion 74, the second conductor portion 84, and the third conductor portion 94 are longer in this order. The first conductor portion 74, the second conductor portion 84, and the third conductor portion 94 are formed orthogonally to each other. The second conductor portion 84 and the third conductor portion 94 face each other. The second conductor portion 84 and the third conductor portion 94 are formed in parallel to each other. The lengths of the first conductor portion 74, the second conductor portion 84, and the third conductor portion 94 can be changed as desired depending on the design.

[0127] FIG. 16 is a diagram showing the reflection characteristics and transmission characteristics of the unit feature according to the fifth embodiment.

[0128] 16, the horizontal axis represents frequency [GHz] and the vertical axis represents gain [dB]. Graph 109 shows the transmission characteristics of the unit structure according to the fifth embodiment. Graph 110 shows the reflection characteristics of the unit structure according to the fifth embodiment.

[0129] As shown in the graph 109, the unit structure according to the fifth embodiment has four attenuation poles in the transmission characteristics: an attenuation pole P9, an attenuation pole P10, an attenuation pole P11, and an attenuation pole P12.

[0130] As shown in graph 110, the unit structure of the fifth embodiment has six resonant frequencies: a first resonant frequency f17, a second resonant frequency f18, a third resonant frequency f19, a fourth resonant frequency f20, a fifth resonant frequency f21, and a sixth resonant frequency f22.

[0131] The first resonant structure 11F is configured so that the portion that functions as a resonator varies depending on the frequency of the radio wave received from the outside.

[0132] The resonance of the unit structure according to the fifth embodiment will be described using Figures 17A, 17B, 17C, 17D, 17E, and 17F. Figures 17A to 17F show the magnetic field strength [A / m (amperes per meter)] of the first resonant structure 11F for the first to sixth frequencies, respectively. In Figures 17A to 17F, areas with stronger magnetic field strength are indicated by darker colors.

[0133] 17A is a diagram showing simulation results showing the magnetic field strength of the unit structure according to the fifth embodiment in response to radio waves of a first frequency. As shown in FIG. 16, the first resonant frequency f17 is approximately 11.6 GHz. In this case, as shown in FIG. 17A, the magnetic field is relatively strong around the first conductor portion 71, the connecting conductor portion 71a, the notch portion 60a, the first conductor portion 73, the connecting conductor portion 73a, and the notch portion 60c. That is, the first conductor portion 71, the connecting conductor portion 71a, the notch portion 60a, the first conductor portion 73, the connecting conductor portion 73a, and the notch portion 60c are configured to function as a resonator for the first resonant frequency f17.

[0134] 17B is a diagram showing simulation results showing the magnetic field strength of the unit structure according to the fifth embodiment for radio waves of the second frequency. As shown in FIG. 16, the second resonant frequency f18 is approximately 16.3 GHz. In this case, as shown in FIG. 17B, the magnetic field is relatively strong around the first conductor 71, the connecting conductor 71a, the notch 60a, the first conductor 73, the connecting conductor 73a, and the notch 60c. That is, the first conductor 71, the connecting conductor 71a, the notch 60a, the first conductor 73, the connecting conductor 73a, and the notch 60c are configured to function as a resonator for the second resonant frequency f18.

[0135] 17C is a diagram showing simulation results showing the magnetic field strength of the unit structure according to the fifth embodiment in response to radio waves of the third frequency. As shown in FIG. 16, the third resonant frequency f19 is approximately 30.4 GHz. In this case, as shown in FIG. 17C, the magnetic field is relatively strong around the second conductor 81, the connecting conductor 81a, the cutout 60a, the second conductor 83, the connecting conductor 83a, and the cutout 60c. That is, the second conductor 81, the connecting conductor 81a, the cutout 60a, the second conductor 83, the connecting conductor 83a, and the cutout 60c are configured to function as a resonator for the third resonant frequency f19.

[0136] 17D is a diagram showing simulation results of the magnetic field strength of the unit structure according to the fifth embodiment for radio waves of the fourth frequency. As shown in FIG. 16, the fourth resonant frequency f20 is approximately 33.1 GHz. In this case, as shown in FIG. 17D, the magnetic field is relatively strong in the first conductor portion 71, the second conductor portion 81, the connecting conductor portion 71a, the connecting conductor portion 81a, the first conductor portion 72, the connecting conductor portion 72a, the second conductor portion 83, the connecting conductor portion 73a, the connecting conductor portion 83a, the first conductor portion 74, and the connecting conductor portion 74a. That is, the first conductor portion 71, the second conductor portion 81, the connecting conductor portion 71a, the connecting conductor portion 81a, the first conductor portion 72, the connecting conductor portion 72a, the second conductor portion 83, the connecting conductor portion 73a, the connecting conductor portion 83a, the first conductor portion 74, and the connecting conductor portion 74a are configured to function as a resonator for the fourth resonant frequency f20.

[0137] 17E is a diagram showing simulation results showing the magnetic field strength of the unit structure according to the fifth embodiment for radio waves of the fifth frequency. As shown in FIG. 16, the fifth resonant frequency f21 is approximately 34.5 GHz. In this case, as shown in FIG. 17E, the magnetic field is relatively strong in the first conductor portion 71, the second conductor portion 81, the connecting conductor portion 71a, the connecting conductor portion 81a, the first conductor portion 73, the second conductor portion 83, the connecting conductor portion 73a, and the connecting conductor portion 83a. That is, the first conductor portion 71, the second conductor portion 81, the connecting conductor portion 71a, the connecting conductor portion 81a, the first conductor portion 73, the second conductor portion 83, the connecting conductor portion 73a, and the connecting conductor portion 83a are configured to function as a resonator for the fifth resonant frequency f21.

[0138] 17F is a diagram showing simulation results showing the magnetic field strength of the unit structure according to the fifth embodiment for radio waves of the sixth frequency. As shown in FIG. 16, the sixth resonant frequency f22 is approximately 36.9 GHz. In this case, as shown in FIG. 17F, the magnetic field is relatively strong in the first conductor portion 71, the connecting conductor portion 71a, the first conductor portion 72, the connecting conductor portion 72a, the first conductor portion 73, the connecting conductor portion 73a, the first conductor portion 74, and the connecting conductor portion 74a. That is, the first conductor portion 71, the connecting conductor portion 71a, the first conductor portion 72, the connecting conductor portion 72a, the first conductor portion 73, the connecting conductor portion 73a, the first conductor portion 74, and the connecting conductor portion 74a are configured to function as a resonator for the sixth resonant frequency f22.

[0139] Referring again to FIG. 16 , the attenuation pole P11 and the attenuation pole P12 are formed between the third resonance frequency f19 and the sixth resonance frequency f22. The attenuation pole P11 is formed in the frequency band between the third resonance frequency f19 and the fourth resonance frequency f20. The attenuation pole P12 is formed between the fourth resonance frequency f20 and the fifth resonance frequency f21. By adjusting the third resonance frequency f19 to the sixth resonance frequency f22, the positions of the attenuation pole P11 and the attenuation pole P12 can be adjusted. This allows the formation of a region 203 in which the reflection characteristic is −10 dB or less. The region 203 serves as the pass band of the bandpass filter. The region 203 is, for example, a band from approximately 33.00 GHz to 37.00 GHz, but is not limited to this.

[0140] Fig. 18 is a diagram showing the amount of phase change of the unit structure according to the fifth embodiment. As shown in Fig. 18, the unit structure according to the fifth embodiment can change the phase of the radio wave in a range from 180° to 0° in region 203. By using the unit structure according to the fifth embodiment, the configuration of the radio wave control plate can be made thinner.

[0141] [Other Embodiments] (Resonant Structure) Resonant structures according to other embodiments will be described with reference to Fig. 19 and Fig. 20. Fig. 19 is a diagram showing a configuration example of a first resonant structure according to other embodiments. Fig. 20 is a diagram showing a configuration example of a second resonant structure according to other embodiments. A unit structure according to other embodiments has a two-layer structure in which a first resonant structure 11F is arranged on an upper surface and a second resonant structure 12F is arranged on a lower surface.

[0142] 19 , the first resonator structure 11F includes a reference conductor 20F, a first resonator 21F, a second resonator 22F, a second resonator 23F, a second resonator 24F, and a second resonator 25F. In the first resonator structure 11F, the reference conductor 20F, the first resonator 21F, the second resonator 22F, the second resonator 23F, the second resonator 24F, and the second resonator 25F are formed on the same XY plane.

[0143] The reference conductor 20F is similar to the reference conductor 20 shown in Fig. 3, and therefore its description will be omitted. The first resonator 21F is similar to the first resonator 21 shown in Fig. 3, and therefore its description will be omitted.

[0144] The second resonator 22F is formed of a conductor. The second resonator 22F is formed, for example, in the upper left corner of the inner circumference of the reference conductor 20F. The second resonator 22F is formed in the XY plane. The second resonator 22F has a first conductor portion 221F and a second conductor portion 222F. The first conductor portion 221F is formed in a rectangular shape. The left side and the upper side of the first conductor portion 221F are electromagnetically connected to the reference conductor 20F. The lower right corner of the first conductor portion 221F is cut out. One end of the second conductor portion 222F is electromagnetically connected to the lower side of the first conductor portion 221F. The second conductor portion 222F extends parallel to the X direction toward the +X direction. The second resonator 22F is configured as a λ / 4 resonator.

[0145] The second resonator 23F is formed of a conductor. The second resonator 23F is formed, for example, in the upper right corner of the inner circumference of the reference conductor 20F. The second resonator 23F is formed in the XY plane. The second resonator 23F has a first conductor portion 231F and a second conductor portion 232F. The first conductor portion 231F is formed in a rectangular shape. The right side and the upper side of the first conductor portion 231F are electromagnetically connected to the reference conductor 20F. The lower left corner of the first conductor portion 231F is notched. One end of the second conductor portion 232F is electromagnetically connected to the left side of the first conductor portion 231F. The second conductor portion 232F extends parallel to the Y direction toward the -Y direction. The second resonator 23F is configured as a λ / 4 resonator.

[0146] The second resonator 24F is formed of a conductor. The second resonator 24F is formed, for example, in the lower right corner of the inner circumference of the reference conductor 20F. The second resonator 24F is formed in the XY plane. The second resonator 24F has a first conductor portion 241F and a second conductor portion 242F. The first conductor portion 241F is formed in a rectangular shape. The right side and the bottom side of the first conductor portion 241F are electromagnetically connected to the reference conductor 20F. The upper left corner of the first conductor portion 241F is cut out. One end of the second conductor portion 242F is electromagnetically connected to the upper side of the first conductor portion 241F. The second conductor portion 242F extends parallel to the X direction toward the -X direction. The second resonator 24F is configured as a λ / 4 resonator.

[0147] The second resonator 25F is formed of a conductor. The second resonator 25F is formed, for example, in the lower left corner of the inner circumference of the reference conductor 20F. The second resonator 25F is formed in the XY plane. The second resonator 25F has a first conductor portion 251F and a second conductor portion 252F. The first conductor portion 251F is formed in a rectangular shape. The left side and the bottom side of the first conductor portion 251F are electromagnetically connected to the reference conductor 20F. The first conductor portion 251F has a notched upper right corner. One end of the second conductor portion 252F is electromagnetically connected to the right side of the first conductor portion 251F. The second conductor portion 252F extends parallel to the Y direction toward the +Y direction. The second resonator 25F is configured as a λ / 4 resonator.

[0148] The second resonator 22F, the second resonator 23F, the second resonator 24F, and the second resonator 25F each have the same shape.

[0149] In the first resonator structure 11F, two different types of resonators, a λ / 2 resonator and a λ / 4 resonator, are formed on the same plane.

[0150] 20 , the second resonator structure 12F includes a reference conductor 30F, a first resonator 31F, a second resonator 32F, a second resonator 33F, a second resonator 34F, and a second resonator 35F. In the second resonator structure 12F, the reference conductor 30F, the first resonator 31F, the second resonator 32F, the second resonator 33F, the second resonator 34F, and the second resonator 35F are formed on the same XY plane.

[0151] The reference conductor 30F is similar to the reference conductor 30 shown in Fig. 4, and therefore its description will be omitted. The first resonator 31F is similar to the first resonator 31 shown in Fig. 4, and therefore its description will be omitted.

[0152] The second resonator 32F is formed of a conductor. The second resonator 32F is formed, for example, in the upper left corner of the inner circumference of the reference conductor 30F. The second resonator 32F is formed in the XY plane. The second resonator 32F has a first conductor portion 321F and a second conductor portion 322F. The first conductor portion 321F is formed in a rectangular shape. The left side and the upper side of the first conductor portion 321F are electromagnetically connected to the reference conductor 30F. The lower right corner of the first conductor portion 321F is cut out. One end of the second conductor portion 322F is electromagnetically connected to the right side of the first conductor portion 321F. The second conductor portion 322F extends parallel to the Y direction toward the +Y direction. The second resonator 32F is configured as a λ / 4 resonator.

[0153] The second resonator 33F is formed of a conductor. The second resonator 33F is formed, for example, in the upper right corner of the inner circumference of the reference conductor 30F. The second resonator 33F is formed in the XY plane. The second resonator 33F has a first conductor portion 331F and a second conductor portion 332F. The first conductor portion 331F is formed in a rectangular shape. The right side and the upper side of the first conductor portion 331F are electromagnetically connected to the reference conductor 30F. The lower left corner of the first conductor portion 331F is cut out. One end of the second conductor portion 332F is electromagnetically connected to the lower side of the first conductor portion 331F. The second conductor portion 332F extends parallel to the X direction toward the +X direction. The second resonator 33F is configured as a λ / 4 resonator.

[0154] The second resonator 34F is formed of a conductor. The second resonator 34F is formed, for example, in the lower right corner of the inner circumference of the reference conductor 30F. The second resonator 34F is formed in the XY plane. The second resonator 34F has a first conductor portion 341F and a second conductor portion 342F. The first conductor portion 341F is formed in a rectangular shape. The right side and the bottom side of the first conductor portion 341F are electromagnetically connected to the reference conductor 30F. The upper left corner of the first conductor portion 341F is cut out. One end of the second conductor portion 342F is electromagnetically connected to the left side of the first conductor portion 341F. The second conductor portion 342F extends parallel to the Y direction toward the -Y direction. The second resonator 34F is configured as a λ / 4 resonator.

[0155] The second resonator 35F is formed of a conductor. The second resonator 35F is formed, for example, in the lower left corner of the inner circumference of the reference conductor 30F. The second resonator 35F is formed in the XY plane. The second resonator 35F has a first conductor portion 351F and a second conductor portion 352F. The first conductor portion 351F is formed in a rectangular shape. The left side and the bottom side of the first conductor portion 351F are electromagnetically connected to the reference conductor 30F. The first conductor portion 351F has a notched upper right corner. One end of the second conductor portion 352F is electromagnetically connected to the right side of the first conductor portion 351F. The second conductor portion 352F extends parallel to the X direction toward the -X direction. The second resonator 35F is configured as a λ / 4 resonator.

[0156] The first conductor portion 221F and the first conductor portion 321F are formed to face each other. The first conductor portion 231F and the first conductor portion 331F are formed to face each other. The first conductor portion 241F and the first conductor portion 341F are formed to face each other. The first conductor portion 251F and the first conductor portion 351F are formed to face each other.

[0157] The second conductor portion 222F and the second conductor portion 352F are formed so as to partially face each other. The second conductor portion 232F and the second conductor portion 322F are formed so as to partially face each other. The second conductor portion 242F and the second conductor portion 332F are formed so as to partially face each other. The second conductor portion 252F and the second conductor portion 342F are formed so as to partially face each other.

[0158] The characteristics of unit structures according to other embodiments will be described with reference to Fig. 21 and Fig. 22. Fig. 21 is a diagram showing reflection characteristics and transmission characteristics of unit structures according to other embodiments. Fig. 22 is a diagram showing the amount of phase change of unit structures according to other embodiments.

[0159] 21, the horizontal axis represents frequency [GHz] and the vertical axis represents gain [dB]. Graph 111 shows the transmission characteristics of the unit structure according to another embodiment. Graph 112 shows the reflection characteristics of the unit structure according to another embodiment.

[0160] As shown in graph 111, the unit structure according to the other embodiment has two attenuation poles, an attenuation pole P13 and an attenuation pole P14, in the transmission characteristics.

[0161] As shown in graph 112, the unit structure according to the other embodiment has a first resonant frequency f23, a second resonant frequency f24, a third resonant frequency f25, and a fourth resonant frequency f26.

[0162] The attenuation poles P13 and P14 are formed in a frequency band between the first resonant frequency f23 and the fourth resonant frequency f26. The attenuation pole P13 is formed in a frequency band between the first resonant frequency f23 and the second resonant frequency f24. The attenuation pole P14 is formed in a frequency band between the third resonant frequency f25 and the fourth resonant frequency f26. By adjusting the third resonant frequency f25 to the fourth resonant frequency f26, the positions of the attenuation poles P11 and P12 can be adjusted. This allows the formation of a region 204 in which the reflection characteristic is −10 dB or less. The region 204 serves as the pass band of the bandpass filter. The region 203 is, for example, a band from approximately 33.00 GHz to 35.00 GHz, but is not limited to this.

[0163] Fig. 22 is a diagram showing the amount of phase change of a unit structure according to another embodiment. As shown in Fig. 22, the unit structure according to another embodiment can change the phase of the radio wave in a range from 180° to 0° in region 204. By using the unit structure according to another embodiment, the configuration of the radio wave control plate can be made thinner.

[0164] 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.

[0165] REFERENCE SIGNS LIST 1 radio wave refraction plate 2 substrate 10, 10A, 10B, 10C, 10D unit structure 11, 11C first resonance structure 12, 12C second resonance structure 20, 20A, 20B, 20C, 20F, 30, 30A, 30B, 30C, 30F reference conductor 21, 21A, 21B, 21C, 21D, 21F, 31, 31A, 31B, 31C, 31D, 31F first resonator 22, 22A, 22B, 22F, 23, 23A, 23B, 23F, 24, 24A, 24B, 24F, 25, 25A, 25B, 25F, 32, 32A, 32B, 32F, 33, 33A, 33B, 33F, 34, 34A, 34B, 34F, 35, 35A, 35B, 35F Second resonator 40, 41, 42, 43, 44, 45 Resonator 60 Patch conductor 60a, 60b, 60c, 60d Notch portion 71, 72, 73, 74 First conductor portion 81, 82, 83, 84 Second conductor portion 91, 92, 93, 94 Third conductor portion

Claims

1. A plurality of unit structures arranged in a first surface direction; a reference conductor that serves as a reference potential for the plurality of unit structures; The plurality of unit structures are a first resonator extending in the first plane direction and a second resonator formed in the same plane as the first resonator and electromagnetically connected to the reference conductor, the first and second resonant structures being rotationally symmetric in the first plane direction; the first resonator structure and the second resonator structure are arranged in a first direction with a gap therebetween, such that the first resonator and the second resonator face each other; Radio control board.

2. the first resonator is a λ / 2 resonator; The second resonator is a λ / 4 resonator. The radio wave control board according to claim 1 .

3. the reference conductor is disposed in the same plane as the first resonator and the second resonator so as to surround the first resonator and the second resonator; the second resonator is electromagnetically connected to the reference conductor; 3. The radio wave control board according to claim 1 or 2.

4. The first resonator is disposed inside the second resonator. The radio wave control board according to claim 3.

5. The second resonator has a rotationally symmetric shape in the first plane direction.

3. The radio wave control board according to claim 1 or 2.

6. The reference conductor is a rectangular frame, The second resonators are disposed at the four corners of the reference conductor.

6. The radio wave control board according to claim 5.

7. The second resonator is formed in a hairpin shape. The radio wave control board according to claim 6.

8. the second resonator of the first resonant structure and the second resonator of the second resonant structure have the same shape and are formed in a rotated state with respect to the second resonator facing each other; The radio wave control board according to claim 6.

9. The first resonator is a patch conductor. The radio wave control board according to claim 6.

10. The first resonator has a hole. The radio wave control plate according to claim 9.

11. The first resonator and the second resonator are λ / 2 resonators. The radio wave control board according to claim 1 .

12. the λ / 2 resonator includes a cutout portion, a first conductor portion provided around the cutout portion, a second conductor portion shorter than the first conductor portion, and a third conductor portion shorter than the second conductor portion; The second conductor portion and the third conductor portion are formed in parallel to face each other, The first conductor portion is formed perpendicular to the second conductor portion and the third conductor portion. The radio wave control plate according to claim 11.

13. A radio wave control plate including 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 are a first resonator structure including a λ / 2 resonator extending in the first plane direction and a λ / 4 resonator formed in the same plane as the λ / 2 resonator and electromagnetically connected to the reference conductor; the first resonant structure and the second resonant structure are arranged in a first direction with a gap therebetween, such that the λ / 2 resonators and the λ / 4 resonators face each other; Radio control board.

14. The radio wave control plate has two or more resonant frequencies, and is configured to form a passband of a bandpass filter using some of the resonant frequencies. The radio wave control plate according to claim 13.

15. the radio wave control plate has four resonant frequencies, namely, a first resonant frequency, a second resonant frequency, a third resonant frequency, and a fourth resonant frequency, in order from the low frequency side, and is configured to form a pass band of a band pass filter using two resonant frequencies on the high frequency side. The radio wave control plate according to claim 13.

16. A radio wave control plate including 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 are a first resonator structure including a λ / 2 resonator extending in the first plane direction and a λ / 4 resonator formed in the same plane as the λ / 2 resonator and electromagnetically connected to the reference conductor; the first resonant structure and the second resonant structure are arranged in a first direction with a gap therebetween, such that the λ / 2 resonators and the λ / 4 resonators face each other, the radio wave control plate has four resonant frequencies, namely, a first resonant frequency, a second resonant frequency, a third resonant frequency, and a fourth resonant frequency, in order from the low frequency side, and is configured to generate two attenuation poles between the third resonant frequency and the fourth resonant frequency to form a pass band of a band pass filter. Radio control board.

17. A radio wave control plate including 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 are a first resonator structure including a λ / 2 resonator extending in the first plane direction and a λ / 4 resonator formed in the same plane as the λ / 2 resonator and electromagnetically connected to the reference conductor; the first resonant structure and the second resonant structure are arranged in a first direction with a gap therebetween, such that the λ / 2 resonators and the λ / 4 resonators face each other, the radio wave control plate has four resonant frequencies, namely, a first resonant frequency, a second resonant frequency, a third resonant frequency, and a fourth resonant frequency, in order from the low frequency side, and is configured to generate two attenuation poles between the first resonant frequency and the third resonant frequency to form a passband of a bandpass filter. Radio control board.

18. A plurality of first unit structures arranged in a first surface direction; A plurality of second unit structures arranged in the first surface direction; a reference conductor that serves as a reference potential for the plurality of first unit structures and the plurality of second unit structures; The plurality of first unit structures are a first resonator structure including a λ / 2 resonator extending in the first plane direction and a λ / 4 resonator formed in the same plane as the λ / 2 resonator and electromagnetically connected to the reference conductor; the first resonant structure and the second resonant structure are arranged in a first direction with a gap therebetween, such that the λ / 2 resonators and the λ / 4 resonators face each other, The plurality of second unit structures are a first patch conductor and a second patch conductor extending in the first plane direction; The first patch conductor and the second patch conductor are arranged to face each other with a gap in the first direction. Radio control board.