JP2014168134A - Electromagnetic wave propagation sheet, electromagnetic wave propagation system and electromagnetic wave propagation method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electromagnetic wave propagation sheet which does not leak electromagnetic waves, is not influenced by a standing wave, and can transmit power with high efficiency.SOLUTION: The electromagnetic wave propagation sheet consists of two plate conductors 130 arranged in parallel with each other while sandwiching an insulator 13a, and has such a structure that the side face of the insulator 13a is entirely sealed electrically by a metal 14 connecting the two plate conductors 130 electrically. Furthermore, on the surface of at least one of the two plate conductors 130, e.g., the first plate conductor 131 on the upper surface side, a plurality of resonators 12, which do not radiate electromagnetic waves and capable of proximity coupling, are arranged as non-radiation resonators one-dimensionally or two-dimensionally at a prescribed interval (equal interval or an interval set appropriately for each resonator 12).

Description

  The present invention relates to an electromagnetic wave propagation sheet, an electromagnetic wave propagation system, and an electromagnetic wave propagation method, and more particularly to an electromagnetic wave propagation sheet and an electromagnetic wave propagation system for propagating electromagnetic waves in a one-dimensional shape or a two-dimensional shape to perform communication and feeding between electronic devices. And an electromagnetic wave propagation method.

  2. Description of the Related Art A two-dimensional communication system is known as an electromagnetic wave propagation system that performs communication between electronic devices via a sheet-like electromagnetic wave communication medium (electromagnetic wave propagation sheet). The two-dimensional communication system includes at least an electromagnetic wave propagation sheet and a proximity coupler placed on the electromagnetic propagation sheet. In the two-dimensional communication system, by using a phenomenon in which an electromagnetic field oozes from the surface of the electromagnetic wave propagation sheet, a proximity coupler inputs and outputs an electromagnetic wave with a medium inside the electromagnetic wave propagation sheet. It becomes an electromagnetic coupling device. Here, if the proximity coupler is electrically connected to the antenna terminal of the electronic device, the electronic devices can communicate with each other at an arbitrary position on the electromagnetic wave propagation sheet. Such a technique can be applied not only to communication but also to power transmission.

  Such a two-dimensional communication system is sometimes called a surface communication system because communication is possible on the surface of the electromagnetic wave propagation sheet. Examples of the electromagnetic wave propagation sheet include a mesh-like conductor portion and a sheet-like conductor portion as described in Japanese Patent No. 4650906 “Signal transmission device, interface device and communication system” of Patent Document 1, and both of these two. It is known that it is constituted by an insulator in a narrow portion sandwiched between conductor portions. In addition, H. et al. Fukuda et al. Described in “Methods for suppressing edge radiation from a two-dimensional communication sheet” (Proc. INSS2011, Penghu, Taiwan, June, 2011) and WO 2012/066953 “Surface communication device” in Patent Document 2. As a method of suppressing electromagnetic wave leakage from the electromagnetic wave propagation sheet, which is a problem when transmitting power, the periphery of the electromagnetic wave propagation sheet is sealed with a metal wall, and the mesh pattern is adjusted to There are known methods for suppressing the leakage of electromagnetic waves. Further, as a technique using a sheet-like communication medium, there is a technique described in Japanese Patent No. 4783904, “Communication Device, Communication Sheet, and Communication Strip” of Patent Document 3.

Japanese Patent No. 4650906 (pages 9-12) International Publication No. 2012/066953 (Page 6-8) Japanese Patent No. 4783904 (pages 6-8)

H. Fukuda et. al. “Methods for suppressing edge radiation from a two-dimensional communication sheet” in Proc. INSS 2011, Penghu, Taiwan, June, 2011.

  However, any of the current technologies described in Patent Documents 1, 2, 3 and Non-Patent Document 1 described above have the following problems. That is, when the electromagnetic wave propagation sheet is used for electric power transmission, electromagnetic wave leakage becomes a problem. In the case of the technique described in Patent Document 1, electromagnetic wave leakage is large, and is used from the viewpoint of radio wave interference and human safety. The power that can be reduced. In the case of the techniques described in Patent Document 2 and Non-Patent Document 1, electromagnetic wave leakage can be suppressed, but the entire electromagnetic wave propagation sheet has a structure covered with metal, so that a strong standing wave distribution is present. As a result, a means for suppressing the standing wave distribution on the power transmission side or the power reception side is required.

  That is, in the structure of the current electromagnetic wave propagation sheet as described in Patent Document 2 and Non-Patent Document 1 which is trying to realize the countermeasure against electromagnetic wave leakage, the electromagnetic wave is surely confined in the electromagnetic wave propagation sheet. Although it is possible to suppress leakage of electromagnetic waves to the surroundings, it has a structure surrounded by a metal that totally reflects electromagnetic waves. In the part that becomes the node of the wave, the surface wave also becomes weak, the amount of coupling of electromagnetic waves obtained at the place is reduced, and there is a problem that there is a significant place dependency on power supply and communication quality. . Moreover, in the case of the technique described in Patent Document 3, there is a problem that the efficiency is low for use for power transmission and the structure easily radiates.

(Object of the present invention)
The present invention has been made in view of such circumstances, and an object thereof is to provide an electromagnetic wave propagation sheet, an electromagnetic wave propagation system, and an electromagnetic wave propagation method that do not leak electromagnetic waves and enable high-efficiency power transmission. It is said.

  In order to solve the above-described problems, the electromagnetic wave propagation sheet, the electromagnetic wave propagation system, and the electromagnetic wave propagation method according to the present invention mainly adopt the following characteristic configuration.

  (1) An electromagnetic wave propagation sheet according to the present invention is an electromagnetic wave propagation sheet provided with two flat conductors arranged parallel to each other with an insulator interposed therebetween, and the insulation is provided by a metal connecting the two flat conductors. The side surfaces of the body are electrically sealed, and at least one of the two flat plate conductors has one dimension of a plurality of resonators that can be closely coupled without emitting electromagnetic waves on the surface of the flat plate conductor at a predetermined interval. It is characterized by arranging in a two-dimensional form.

  (2) The electromagnetic wave propagation system according to the present invention is an electromagnetic wave propagation system in which an electromagnetic wave propagates through an electromagnetic wave propagation sheet to communicate between electronic devices, and the electromagnetic wave propagation sheet is at least the electromagnetic wave propagation sheet according to item (1). It is characterized by comprising.

  (3) An electromagnetic wave propagation method according to the present invention is an electromagnetic wave propagation method in an electromagnetic wave propagation sheet composed of two flat conductors arranged in parallel with each other with an insulator in between, and a metal that connects the two flat conductors The side surface of the insulator is electrically sealed to shield electromagnetic wave radiation, and at least one of the flat conductors of the two flat conductors has no electromagnetic wave radiation and can be close-coupled The non-radiating resonators are arranged one-dimensionally or two-dimensionally at predetermined intervals.

  According to the electromagnetic wave propagation sheet, the electromagnetic wave propagation system, and the electromagnetic wave propagation method of the present invention, as a structure for transmitting electromagnetic waves by two flat conductors sandwiching an insulator, a metal that electrically connects the two flat conductors is used. A resonator that is configured to electrically shield (seal) the side surface (periphery) of an insulator and that can be closely coupled without electromagnetic radiation on at least one of the two flat conductors. Since a plurality of one-dimensional or two-dimensional arrangements are provided as non-radiating resonators, any electromagnetic wave interface for exchanging electromagnetic waves with the outside can be arranged on the electromagnetic wave propagation sheet as required. It can be arranged according to the position of the resonator and can be resonantly coupled, and it can suppress leakage of electromagnetic waves and eliminate the influence of standing waves, thus achieving high efficiency It is possible to power transmission.

It is the schematic for demonstrating the structure of the electromagnetic wave propagation sheet | seat in 1st embodiment of this invention. It is the schematic which shows an example of a mode that electric power transmission is performed using the electromagnetic wave propagation sheet | seat shown in FIG. FIG. 3 is a structural diagram illustrating an example of a structure of an electromagnetic wave interface illustrated in FIG. 2. It is a top view at the time of seeing the electromagnetic wave propagation sheet | seat of FIG. 1 from the upper surface. It is explanatory drawing which shows the specific structure of the electromagnetic wave propagation | transmission sheet | seat of FIG. 1 used for experiment of electric power transmission performance. It is a graph which shows the result of having simulated the power transmission efficiency between two electromagnetic wave interfaces, moving the other electromagnetic wave interface to the position of the resonator of each port number in the electromagnetic wave propagation sheet | seat shown in FIG. It is the schematic for demonstrating the structure of the electromagnetic wave propagation sheet | seat in 2nd embodiment of this invention. It is the enlarged view which expanded and displayed a part of upper surface of the electromagnetic wave propagation sheet | seat shown in FIG.

  Hereinafter, preferred embodiments of an electromagnetic wave propagation sheet, an electromagnetic wave propagation system, and an electromagnetic wave propagation method according to the present invention will be described with reference to the accompanying drawings.

(Features of the present invention)
Prior to the description of the embodiments of the present invention, an outline of the features of the present invention will be described first. The electromagnetic wave propagation sheet according to the present invention comprises, as an electromagnetic wave guiding method, two flat conductors and an insulator sandwiched between both flat conductors, and the end face (side face) of the insulator is electrically sealed with metal. The flat conductors are electrically short-circuited by the metal, and at least one of the two flat conductors has a coplanar structure as a basic structure on the surface. Predetermined spacing (non-radiating resonators that do not emit electromagnetic waves and can be closely coupled) one-dimensionally or two-dimensionally at predetermined intervals (equal to each resonator, or for each resonator. It is characterized in that the structure is arranged at a predetermined interval). Thus, by applying an electromagnetic wave propagation sheet like this as an electromagnetic wave propagation system that propagates electromagnetic waves and communicates between electronic devices, it suppresses electromagnetic wave leakage and eliminates the effects of standing waves, thereby achieving high efficiency. It is possible to construct a system that can perform efficient power transmission.

(First embodiment)
Next, an embodiment of the present invention will be described. First, the structure of the electromagnetic wave propagation sheet in the first embodiment of the present invention will be described in detail with reference to FIG. FIG. 1 is a schematic view for explaining the structure of an electromagnetic wave propagation sheet in the first embodiment of the present invention.

  The electromagnetic wave propagation sheet 11 shown in FIG. 1 has a sheet-like flat plate structure in which two flat conductors 130 (that is, a first flat conductor 131 and a second flat conductor 132) are arranged in parallel to face each other. An insulator 13a is sandwiched between the two flat conductors 130. The end surface (side surface) of the insulator 13a is electrically sealed by the metal 14, and the ends of the two flat conductors 130 are electrically short-circuited (connected) by the metal 14. It has become. The metal 14 is configured by, for example, a metal wall, a via (via), a through hole, or the like so that the radiation of the electromagnetic wave in the electromagnetic wave propagation sheet 11 to the end face (side face) side can be completely shielded. The insulator 13a is formed using a dielectric having a dielectric constant in a predetermined range or an air layer.

  Further, on the surface of at least one flat conductor 130 of the two flat conductors 130, a resonator 12 that suppresses radiation of electromagnetic waves and resonates at a frequency at which power is transmitted and received is closely coupled without radiation of electromagnetic waves. As non-radiating resonators that can perform the above, they are arranged at a predetermined interval in a one-dimensional or two-dimensional manner. As described above, the electromagnetic wave propagation sheet 11 shown in FIG. 1 has a thin sheet-like waveguide structure, and the periphery (side surface) is covered with the metal 14 with low loss except for the upper surface and the lower surface. The electromagnetic wave can be confined in the propagation sheet 11.

  That is, the electromagnetic wave propagation sheet 11 shown in FIG. 1 has an upper surface and a lower surface of the insulator 13a in which the entire end surface (side surface) is electrically sealed with the metal 14 for electrically connecting the two flat conductors 130. Is provided with a resonator 12 as a non-radiating resonator that has a structure sandwiched between two flat conductors 130, is non-radiating that does not radiate electromagnetic waves, and can be closely coupled by resonance. Its characteristic is that it adopts the above structure. In the following description, for convenience of explanation, the flat conductor 130 disposed on the upper surface of the insulator 13a is referred to as a first flat conductor 131, and the flat conductor 130 disposed on the lower surface of the insulator 13a is referred to as a second flat conductor 132. Sometimes called.

  Here, in the case of performing power transmission, as shown in FIG. 2, a plurality of flat conductors 130 are disposed on one of the two flat conductors 130 (the upper first flat conductor 131 in FIG. 2). Among the resonators 12, the electromagnetic wave interface 15 </ b> A is disposed on one of the selected resonators 12 to be resonantly coupled to the resonator 12, and on a resonator 12 other than the resonator 12. In addition, by disposing another electromagnetic wave interface 15B and resonantly coupling with the other resonator 12, the electromagnetic wave is fed into the electromagnetic wave propagation sheet 11 through the one electromagnetic wave interface 15A, and the other through the electromagnetic wave propagation sheet 11 The electromagnetic wave can be exchanged with the electromagnetic wave interface 15B. FIG. 2 is a schematic diagram illustrating an example of a state in which power transmission is performed using the electromagnetic wave propagation sheet 11 illustrated in FIG. 1.

  Note that the electromagnetic wave interfaces 15A and 15B that transmit power by exchanging electromagnetic waves between the electromagnetic wave propagation sheet 11 and an external circuit have the same structure, for example, the structure shown in FIG. Yes. FIG. 3 is a structural diagram showing an example of the structure of the electromagnetic wave interfaces 15A and 15B shown in FIG. 2. Like the electromagnetic wave propagation sheet 11, the dielectric layer 153 is made up of the first flat conductor layer 151 and the second flat conductor layer 152. The example comprised by the three-layer structure pinched | interposed by these two conductor layers is shown.

  In the first flat conductor layer 151, an elongated waveguide slot 211 having a coupling slot 221 at the tip is formed as a coplanar line for exchanging electromagnetic waves with the electromagnetic wave propagation sheet 11. An elongated conductor is disposed as the waveguide line 212 in the waveguide slot 211, and the waveguide 210 that transmits electromagnetic waves is formed by the waveguide slot 211 and the waveguide line 212. Further, the coupling slot 221 is disposed perpendicular to the waveguide slot 211, and an elongated conductor is disposed as a coupling line 222 in the coupling slot 221, and the coupling slot 221 and the coupling line 222 A resonant antenna 220 that radiates electromagnetic waves toward the electromagnetic wave propagation sheet 11 is formed. Here, the distal end of the waveguide line 212 is connected to approximately the center of the coupling line 222.

  On the other hand, in the second flat conductor layer 152, an elongated opposing slot 230 having a shape corresponding to the coupling slot 221 is formed at a position facing the coupling slot 221 formed on the first flat conductor layer 151. The first flat conductor layer 151 and the dielectric layer 153 are formed with a plurality of vias 240 and 250 filled with a conductive material so as to surround the waveguide slot 211 and the coupling slot 221, respectively. Yes. The first flat conductor layer 151 and the second flat conductor layer 152 are electrically connected by the plurality of vias 240 and 250, and the waveguide 210 and the resonant antenna 220 are electrically shielded.

  By arranging the electromagnetic wave interfaces 15A and 15B having such a structure at the position of the resonator 12 on the flat conductor 130, the first flat conductor layer is formed through the opposed slot 230 of the opened second flat conductor layer 152. The coupling line 222 on 151 and the stripline for coupling in the resonator 12 on the plate conductor 130 are closely coupled to each other, and electromagnetic waves can be exchanged.

  Next, the structure of the electromagnetic wave propagation sheet 11 shown in FIG. 1 will be further described in order. As described above, the electromagnetic wave propagation sheet 11 is electrically shielded (sealed) by the metal 14 having a low loss except for the upper surface and the lower surface, and has a thickness for confining the electromagnetic wave in the electromagnetic wave propagation sheet 11. It has a thin waveguide structure. FIG. 4 shows a plan view when the electromagnetic wave propagation sheet 11 of FIG. 1 is viewed from above. As shown in FIG. 4, the periphery (side surface) is metal on the upper surface of at least one flat conductor (in the case of FIG. 4, the upper first flat conductor 131) of the two flat conductors 130 of the electromagnetic wave propagation sheet 11. A coplanar non-radiating resonator or resonator 12 that is electrically shielded by a metal, in other words, a non-radiating resonator whose periphery (side) is electrically shielded by a metal is placed in an internal slot. A resonator 12 having a microstrip line structure composed of the strip lines 16 is formed. That is, since the side of the strip line 16 is electrically sealed with metal as described above, it has a structure with less electromagnetic wave leakage.

Each electromagnetic wave gathered in the vicinity of each resonator 12 through the electromagnetic wave propagation sheet 11 can be extracted to the outside with high efficiency by using the electromagnetic wave interfaces 15A and 15B as shown in FIG. Moreover, the shape of the strip line 16 included in the slot in the resonator 12 is a linear shape (bar shape) extending in the short direction of the rectangular electromagnetic wave propagation sheet 11, and the electromagnetic wave interface as shown in FIG. In order to strongly couple 15A and 15B, when the length of the stripline 16 is L1, it is desirable that the length L1 of the stripline 16 be within the range of the following formula (1).
λg / 4 ≦ L1 ≦ λg / 2 (1)
Here, λg is the effective wavelength obtained by multiplying the wavelength λ in free space by the wavelength shortening rate determined by the effective dielectric constant of the insulator 13a forming the dielectric layer (that is, the effective electromagnetic wave propagating in the electromagnetic wave propagation sheet 11). Wavelength).

  As a preferred example, the length L1 of the stripline 16 is desirably 2/5 of the effective wavelength λg in consideration of the degree of coupling and the like while taking the 1/4 effective wavelength (that is, λg / 4) as a reference. .

  The stripline / metal gap L2 between the stripline 16 and the surrounding metal 14 is preferably narrow in order to increase the strength of the nearby electromagnetic field and suppress electromagnetic wave leakage. From the above, as a minimum order, for example, about 100 μm is a promising candidate. In addition, when the communication area such as RFID (Radio Frequency IDentification) is used for limited communication, it is possible to adjust the communicable area by adjusting the value of the gap L2 between the stripline and the metal. is there.

  In the case of the electromagnetic wave propagation sheet 11 shown in FIG. 1, the resonator interval L3 indicating the distance between adjacent resonators 12 is the adjacent resonance when the resonators 12 are periodically arranged at regular intervals at a constant distance. Although the distance between the devices is shown, it may not be necessarily arranged at equal intervals, but may be arranged at intervals appropriately set for each resonator 12, and the electromagnetic waves in the electromagnetic wave propagation sheet 11 If the resonator 12 is arranged at a predetermined position that is predetermined as a position to be accessed, highly efficient electromagnetic waves can be exchanged between the resonator 12 and the electromagnetic wave interface 15 at the position.

(Experimental example)
Next, specific experimental results of the electromagnetic wave propagation sheet 11 of FIG. 1 will be described. FIG. 5 is an explanatory diagram showing a specific structure of the electromagnetic wave propagation sheet 11 of FIG. 1 used in the experiment of power transmission performance. In the electromagnetic wave propagation sheet 11 shown in FIG. 5, an insulator 13a having a dielectric constant of 2.2 and two flat conductors 130 sandwiching the insulator 13a (that is, a first flat conductor 131 and a second flat conductor 132). The electromagnetic wave propagation sheet 11 has a length of 392 mm in the longitudinal direction, a length in the short direction of 60 mm, and a thickness of 1 mm. In addition, in the longitudinal direction of the upper surface of the upper first plate conductor 131 of the two plate conductors 130, 26 resonators 12 of 0, 1, 2,. They are arranged one-dimensionally at equal intervals of 8 mm. Each resonator 12 is assigned 0, 1, 2,..., 25 and a port number 17. The length L1 of the stripline 16 in each resonator 12 is 27.7 mm, and the stripline-metal gap L2 between the end of the stripline 16 and the surrounding metal 14 is 1.5 mm. The length L1 of 27.7 mm of the strip line 16 corresponds to the length of 1/3 of the effective wavelength λg of the electromagnetic wave propagating through the electromagnetic wave propagation sheet 11.

  In the electromagnetic wave propagation sheet 11 having the structure as described above, one electromagnetic wave interface 15A is fixedly disposed on the 0th resonator 12 with the port number 17 positioned at one end of the electromagnetic wave propagation sheet 11, and the other electromagnetic wave interface 15B is arranged. .., 25 and the power between the electromagnetic wave interfaces 15A and 15B through the electromagnetic wave propagation sheet 11 when moved to the position of the resonator 12 of each assigned port number 17 The transmission efficiency was calculated by electromagnetic field simulation. In this electromagnetic field simulation, it is assumed that the two flat conductors 130 and the metal 14 covering the periphery (side surface) of the electromagnetic wave propagation sheet 11 are all perfect conductors.

  FIG. 6 simulates the power transmission efficiency between the two electromagnetic wave interfaces 15A and 15B while moving the other electromagnetic wave interface 15B to the position of the resonator 12 of each port number in the electromagnetic wave propagation sheet 11 shown in FIG. It is a graph which shows a result. As shown in the graph of FIG. 6, the power transmission efficiency at each of the port numbers 0, 1, 2,..., 25 is within the range of −0.4 dB to −1.4 dB. It can be seen that the difference in transmission efficiency is suppressed to within 1 dB, and that the power transmission efficiency at any port is all as high as -1.5 dB.

  As described above, by using the electromagnetic wave propagation sheet 11 having the structure shown in FIGS. 1 to 5, an electromagnetic wave propagation system in which high transmission efficiency is guaranteed can be realized.

(Second embodiment)
Next, the structure of the electromagnetic wave propagation sheet according to the second embodiment of the present invention will be described in detail with reference to FIGS. FIG. 7 is a schematic view for explaining the structure of the electromagnetic wave propagation sheet in the second embodiment of the present invention. FIG. 8 is an enlarged view showing a part of the upper surface of the electromagnetic wave propagation sheet shown in FIG. 7 in an enlarged manner.

  The electromagnetic wave propagation sheet 11A shown in FIGS. 7 and 8 has the same basic configuration as the electromagnetic wave propagation sheet 11 shown in FIG. 1 of the first embodiment, but in the electromagnetic wave propagation sheet 11 shown in FIG. The resonator 12 comprising a linear (bar-shaped) strip line 16 and a slot containing the strip line 16 is arranged one-dimensionally. Instead of such a structure, a wedge-shaped strip line 161 and the strip line are arranged. By arranging the resonators 12 </ b> A composed of slots containing 161 in a two-dimensional manner at a predetermined interval, it is possible to spread the electromagnetic waves in the electromagnetic wave propagation sheet 11 </ b> A in a two-dimensional manner.

  That is, as shown in the enlarged view of FIG. 8, the stripline 161 constituting the resonator 12A is approximately near the midpoint of the linear (rod-shaped) stripline 16 in the case of the electromagnetic wave propagation sheet 11 shown in FIG. The first strip line piece 16A and the second strip line piece 16B are formed to be bent at substantially right angles. Further, the bending direction of the strip line 161 in the resonator 12A1 in a certain row is bent in the direction opposite to the bending direction of the strip line 161 in the resonator 12A2 located in the next row, and further, the bending direction of the resonator 12A1 in the certain row is further increased. The strip lines 161 of the resonators 12A2 in the next row are arranged with respect to the strip line 161 by shifting the positions of the strip lines 161 in parallel with each other by about ½ of the length L1 of the strip line 16 in FIG. Thus, as shown in FIG. 7, adjacent resonators 12 </ b> A are periodically arranged in a two-dimensional manner in a state in which they are close to each other.

  Therefore, in the electromagnetic wave propagation sheet 11A of FIG. 7, by sending an electromagnetic wave into the electromagnetic wave propagation sheet 11A via the electromagnetic wave interface 15, it is possible to generate a strong electromagnetic wave that is uniform in the electromagnetic wave propagation sheet 11A and strong in the vicinity region. Become.

  The configuration of the preferred embodiment of the present invention has been described above. However, it should be noted that such embodiments are merely examples of the present invention and do not limit the present invention in any way. Those skilled in the art will readily understand that various modifications and changes can be made according to a specific application without departing from the gist of the present invention.

11 Electromagnetic wave propagation sheet 11A Electromagnetic wave propagation sheet 12 Resonator 12A Resonator 12A1 Resonator 12A2 Resonator 13 Flat conductor 13a Insulator 14 Metal 15 Electromagnetic wave interface 15A Electromagnetic wave interface 15B Electromagnetic wave interface 16 Strip line 16A First strip line piece 16B Second strip Line piece 17 Port number 130 Flat conductor 131 First flat conductor 132 Second flat conductor 151 First flat conductor layer 152 Second flat conductor layer 153 Dielectric layer 161 Stripline 210 Waveguide 211 Waveguide slot 212 Waveguide line 220 Resonance Antenna 221 Coupling slot 222 Coupling line 230 Opposing slot 240 Via 250 Via L1 Stripline length L2 Stripline-metal gap L3 Resonator spacing

Claims (7)

  An electromagnetic wave propagation sheet comprising two flat conductors arranged in parallel with each other with an insulator interposed therebetween, and the side surface of the insulator is electrically sealed by a metal connecting the two flat conductors In addition, a plurality of resonators that can be close-coupled without radiation of electromagnetic waves are arranged in a one-dimensional or two-dimensional manner at predetermined intervals on the surface of at least one of the two flat conductors. An electromagnetic wave propagation sheet. 2. The electromagnetic wave propagation sheet according to claim 1, wherein a length L <b> 1 of a resonance strip line forming each of the plurality of resonators is within a range of the following formula (2).
λg / 4 ≦ L1 ≦ λg / 2 (2)
Where λg is the effective wavelength of the electromagnetic wave propagating in the electromagnetic wave propagation sheet   The resonance stripline forming each of the plurality of resonators and the shape of the slot containing the stripline are a linear shape or a wedge shape bent substantially at a right angle at a substantially midpoint position. Item 3. The electromagnetic wave propagation sheet according to Item 1 or 2.   The electromagnetic wave propagation sheet according to any one of claims 1 to 3, wherein the metal connecting the two flat plate conductors is formed by a metal wall, a via, or a through hole.   The electromagnetic wave propagation sheet according to any one of claims 1 to 4, wherein the insulator is formed of a dielectric having a dielectric constant within a predetermined range or air.   An electromagnetic wave propagation system for communicating between electronic devices by propagating electromagnetic waves through an electromagnetic wave propagation sheet, wherein the electromagnetic wave propagation sheet is constituted by the electromagnetic wave propagation sheet according to any one of claims 1 to 5. Electromagnetic wave propagation system.   An electromagnetic wave propagation method for an electromagnetic wave propagation sheet comprising two flat conductors arranged parallel to each other with an insulator interposed therebetween, wherein the side surface of the insulator is electrically sealed by a metal connecting the two flat conductors. A plurality of non-radiating resonators that are close to each other and can be closely coupled to each other on the surface of at least one flat conductor of the two flat conductors. An electromagnetic wave propagation method, wherein the electromagnetic wave is arranged in a one-dimensional shape or a two-dimensional shape.

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