Abstract: The invention relates to a method for detecting the position of a bus subscriber (2, 2a, 2b, 2n) of a bus system, in which a control device (1) and several bus subscribers (2, 2a, 2b, 2n) are provided. The bus subscribers (2, 2a, 2b, 2n) are respectively in a position (P1, P2, Pn) to be detected and are connected to the control device (1) via at least one line, the line to the respective bus subscriber (2, 2a, 2b, 2n) having a definable line length (L1, L2, Ln), and the position of a bus subscriber (2, 2a, 2b, 2n) is then detected. The control device (1) emits a signal by means of an oscillator (3) via the line to the respective bus subscriber (2, 2a, 2b, 2n) and the bus subscriber (2, 2a, 2b, 2n) responds. The frequency of the oscillator (3) is determined and a ratio of frequency and line length (L1, L2, Ln) is used to detect the position.

Abstract: The invention relates to a method for detecting the position of a bus subscriber (2, 2a, 2b, 2n) of a bus system, in which a control device (1) and several bus subscribers (2, 2a, 2b, 2n) are provided. The bus subscribers (2, 2a, 2b, 2n) are respectively in a position (P1, P2, Pn) to be detected and are connected to the control device (1) via at least one line, the line to the respective bus subscriber (2, 2a, 2b, 2n) having a definable line length (L1, L2, Ln), and the position of a bus subscriber (2, 2a, 2b, 2n) is then detected in that the control device (1) sends a signal via the line to the respective bus subscriber (2, 2a, 2b, 2n) within a measurement cycle and the bus subscriber (2, 2a, 2b, 2n) responds. The measurement cycle duration is determined and a ratio of measurement cycle duration and line length (L1, L2, Ln) is used to detect the position.

Abstract: Filter devices are provided herein. A filter device includes a plurality of low-band resonators and a plurality of high-band resonators. In some embodiments, adjacent ones of the plurality of high-band resonators are spaced farther apart from each other than adjacent ones of the plurality of low-band resonators are spaced apart from each other.

Abstract: When three directions perpendicular to each other are defined as x-direction, y-direction and z-direction, the electromagnetic wave reception device is provided with the two or more antenna electrodes extending in the x-direction, the two or more antenna electrodes are arranged parallel to each other and arranged in the z-direction, and the two or more antenna electrodes are connected by the common lead wire, and the antenna electrodes are connected between the two or more antenna electrodes that are adjacent to each other by repeatedly applying a voltage having opposite characteristics to each other, an electromagnetic wave having a resonance frequency determined by the electromagnetic wave velocity and a distance between the antenna electrodes that are adjacent to each other is induced, and the electromagnetic wave is transmitted to a space in the z-direction.

Abstract: Provided is a wireless power supply system employing a magnetic resonance technique in which high-frequency power is wirelessly supplied from a power transmission device that includes a power transmission coil to a power reception device that includes a power reception coil that is at least magnetically coupled with the power transmission coil. The wireless power supply system includes a relay coil that is coupled with the power transmission coil and the power reception coil using at least a magnetic field, and a relay circuit that is connected to the relay coil and forms a resonant circuit together with the relay coil. When k1 represents a coupling coefficient between the power transmission coil and the power reception coil and k2 represents a coupling coefficient between the power transmission coil and the relay coil, a relationship k1?k2 holds true.

Abstract: A system for controlling mobile electric vehicle charging platforms includes a plurality of mobile charging platforms for charging an electric vehicle. At least one central server implements a mobile electric vehicle charging system. The mobile electric vehicle charging system further includes a communications interface for transmitting and receiving the control data between the at least one central server implementing the mobile electric vehicle charging system, the plurality of mobile charging platforms and the electric vehicle. A database stores mobile charging platform data and electric vehicle data. An artificial intelligence controller generates the control data to schedule the meeting location between the mobile charging platform and the electric vehicle responsive to first position data received from the mobile charging platform application, second position data received from the electric vehicle, the mobile charging platform data and the electric vehicle data.

Abstract: Systems according to the present disclosure provide one or more surfaces that function as power transferring surfaces for which at least a portion of the surface includes or is composed of “fractal cells” placed sufficiently closed close together to one another so that a surface (plasmonic) wave causes near replication of current present in one fractal cell in an adjacent fractal cell. A fractal of such a fractal cell can be of any suitable fractal shape and may have two or more iterations. The fractal cells may lie on a flat or curved sheet or layer and be composed in layers for wide bandwidth or multibandwidth transmission.

Abstract: Systems, computer-implemented methods, and computer program products that can facilitate superconducting resonator definition based on one or more superconducting circuit attributes, are described. According to an embodiment, a system can comprise a memory that stores computer executable components and a processor that executes the computer executable components stored in the memory. The computer executable components can comprise a resonant circuit component that derives a resonant circuit indicative of a superconducting resonator of a superconducting circuit based on one or more attributes of the superconducting circuit. The computer executable components can further comprise a resonator definition component that defines a frequency value of the superconducting resonator based on the resonant circuit.

Abstract: Filter devices are provided herein. A filter device includes a plurality of low-band resonators and a plurality of high-band resonators. In some embodiments, adjacent ones of the plurality of high-band resonators are spaced farther apart from each other than adjacent ones of the plurality of low-band resonators are spaced apart from each other.

Abstract: This application discloses a filtering apparatus, including: a coupling channel distinguishing component, dividing a coupling channel between a first filtering component and a second filtering component into a plurality of independent coupling channels, and it includes a channel distinguishing component and at least one decoupling component, the channel distinguishing component is configured to divide the coupling channel into a plurality of independent channels, and the decoupling component is configured to decouple the plurality of independent channels into the plurality of independent coupling channels; and at least one adjusting component, each of the adjusting component is configured to adjust a preset coupling scheme of a corresponding independent coupling channel, each of the at least one adjusting component is located in the corresponding independent coupling channel, and each of the adjusting component is located in a corresponding projection area.

Abstract: A monitoring device for use in a cryogenic system. The monitoring device comprises first and second conducting elements and a current detector. The first conducting element comprises high temperature superconducting, HTS, material and is configured for connection to a current source and insertion into the cryogenic system. The second conducting element comprises HTS material and is connected in parallel to the first conducting element by first and second joints. The current detector is configured to detect a current in the second conducting element. When the HTS material in each of the first and second conducting elements is in a superconducting state, the resistance, RT, of the first conducting element between the first and second joints, is less than the sum, RB, of the resistance of the second conducting element between the first and second joints and the resistances of the first and second joints.

Abstract: Embodiments of the invention provide a resonant circuit including an active material substrate excitable by photon energy. A busline having a single input and a single output is located on the active material substrate. A RF resonator geometry is located on the active material substrate in electrical communication with the busline. Application of photon energy to the active material substrate changes the resonance of the RF resonator geometry at room temperatures. Alternately, a resonant circuit is provided that include a passive material substrate. An active material thin film is located on the passive material substrate. A busline having a single input and a single output and a RF resonator geometry located on the active material thin film. The RF resonator geometry is in electrical communication with the busline. Application of photon energy to the active material thin film changes the resonance of the RF resonator geometry at room temperatures.

Abstract: A superconducting fault current limiter element, comprising: a plurality of tapes, arranged in electrical parallel fashion among one another, wherein at least one tape of the plurality of tapes comprises a superconductor tape, and wherein at least one tape of the plurality of tapes comprises a non-superconductor tape.

Abstract: A TEM RF antenna device (40) for a magnetic resonance MR imaging system (10), ?the RF antenna device (40) comprising a plurality of rungs (44), and each rung (44) having at least one axial member (46) that in an operational state is substantially arranged parallel to the axial direction (38) wherein ?the axial members (46) of the plurality of rungs (44) are arranged along an azimuthal direction (34) in a substantially equally spaced relationship about a center axis (42), and wherein ?the at least one axial member (46) of each of the rungs (44) has two end regions (48, 50) and wherein ?for at least two rungs (44?, 44?) of the plurality of rungs (44) that are adjacently arranged with regard to the azimuthal direction (34), each rung (44?, 44?) comprising at least one transversal member (52, 54) that is galvanically connected to one of the end regions (48, 50) of the axial member (46) of that rung (44?, 44?) only, in the operational state, the at least one transversal members (52, 54) of the adjacent rungs (44?,

Abstract: Metamaterial waveguides and shielded bridges are employed to improve the scalability and routing of quantum computing circuits. A metamaterial waveguide includes a signal conductor that has a periodic array of lumped element resonators distributed along and electrically coupled to a signal conductor. The periodic array of lumped element resonator pairs defines a bandgap within an operating bandwidth of the waveguide. Qubits can communicate within the operating bandwidth of the waveguide and communications via the waveguide can be controlled by changing a center frequency of the qubits. A shielded bridge is used to cross over high frequency communications and control CPW's in a quantum computing circuit. The shielded bridge includes a signal bridge that is elevated and extends over a separate CPW, and a ground bridge positioned between the signal bridge and the separate CPW.

Abstract: In one embodiment, a method includes wirelessly coupling a transmitter to a wireless device; determining a first power transfer value of a signal transmitted from the transmitter to the wireless device with a first transmit impedance; determining a second power transfer value of the signal transmitted from the transmitter to the wireless device with a second transmit impedance; and selecting the first transmit impedance based on received power-level information indicating that the first power transfer value is greater than the second power transfer value.

Abstract: This application provides a resonator that includes a housing and a cover. A resonant rod, a dielectric block, and an elastic element are disposed in the housing. The resonant rod is in a tubular shape and includes an inner side face, an outer side face, and a first end face. The dielectric block includes a bottom end and a top end, the top end is connected to the cover, a second end face and a boss that protrudes from the second end face are disposed at the bottom end, and the boss is in an annular shape. The boss is embedded in the resonant rod a, or the boss fits around the outside of the resonant rod. The elastic element is connected between the first end face and the second end face or between the top end of the dielectric block and the cover.

Abstract: A band pass filter including a microstrip transmission line comprises: a substrate having a grounding surface formed on a rear surface thereof; an input port which is formed on an upper surface of the substrate and receives a transmission signal; an output port which is formed on the upper surface of the substrate and outputs a filtered transmission signal; and a plurality of signal transmission lines spaced at predetermined distance from one another in parallel, each of the plurality of signal transmission lines having one end connected to and in contact with the input port, and having the other end connected to and in contact with the output port.

Abstract: An example system includes a communication channel and at least one tuning structure coupled to the communication channel. The tuning structure includes a branch of the communication channel. The tuning structure is to dissipate energy from the communication channel at least at one selected wavelength. The branch of the communication channel is a terminated portion.

Abstract: An apparatus of an antenna is provided. The apparatus includes a first conductor plate disposed on an upper side of a single plate and comprising an aperture, a plurality of vias inserted to vertically penetrate through the single plate, a second conductor plate disposed on a lower side of the single plate, and a feed line for applying a signal to radiate to a dielectric resonator embedded as a cavity which is formed by the first conductor plate, the second conductor plate, and the vias. The aperture is in a size which produces multiple-resonance at an operating frequency.

Abstract: A sheet-type metamaterial of a film configuration to exhibit a figure of merit (FOM) exceeding 300 in a terahertz wave band. A film-shaped dielectric substrate has a front surface on which a first wire array is formed, and a back surface on which a second wire array is formed. The first wire array includes elongated metallic first cut wires of a predetermined length l aligned in a y-axis direction with a gap g therebetween and in an x-axis direction with space s therebetween. The second wire array includes second metallic cut wires having the same shape as the first cut wires and aligned to overlap the first cut wires. With a thickness d of the dielectric substrate set at about 50 ?m, the length l of the first cut wire and the second cut wire is a length approximate to a value to generate resonance at a design frequency.

Abstract: An integrated, superconducting imaging sensor may be formed from a single, meandering nanowire. The sensor is capable of single-photon (or single-event) detection and imaging with ˜10 micron spatial resolution and sub-100-picosecond temporal resolution. The sensor may be readily scaled to large areas.

Abstract: A split ring resonator (10) as a unit cell of a passive element includes a conductor (1) made of a metal and having an annular shape split by a first gap (2) and a second gap (3) different from the first gap (2). A first capacitance generated by the first gap (2) is different from a second capacitance generated by the second gap (3).

Abstract: 3D microscale metamaterial structures and methods of making. The metamaterial structure includes a polygonal structure having a plurality of panels connected to one another at structure corners. A metal resonator pattern is provided on each of the panels. The resonator patterns of neighboring panels are electromagnetically coupled to one another across a gap between the resonator patterns at the corresponding structure corner. The panels can be a polymer material, layers of graphene oxide, etc. The metamaterial structure can be a 3D octagram split-ring resonator, and is completely isotropic. The 3D metamaterial structure can be made by a self-folding process.

Abstract: Transmission paths correspond to frequency bands, respectively, and transmission signals of the four bands are transmitted through the transmission paths. Reception paths correspond to the frequency bands, respectively, and reception signals of the four bands are transmitted through the reception bands. A Tx switch selects a transmission path corresponding to one of the frequency bands so that a transmission signal corresponding to the frequency band is emitted from an antenna. An Rx switch selects a reception path corresponding to the frequency band so that a reception signal of the frequency band received by the antenna is extracted. A tunable filter is a filter whose frequency band is adjusted in a variable manner so that reception band noise of the frequency band is attenuated, and is provided between each of the antenna and the Rx switch, and the Tx switch.

Abstract: Provided is a print circuit board including: a ground conductor layer; a pair of strip conductors extending along a first orientation; a first resonator conductor three-dimensionally intersecting with the pair of strip conductors along a second orientation; a pair of first via holes connecting the first resonator conductor and the ground conductor layer; and a dielectric layer including the first resonator conductor therein, and being disposed between the ground conductor layer and the pair of the strip conductors. A distance Hi between the pair of strip conductors and the ground conductor layer is twice or more a distance H2 between the pair of strip conductors and the first resonator conductor, and a line length L of the first resonator conductor is 0.4 wavelength or more and 0.6 wavelength or less at a frequency corresponding to the bit rate.

Abstract: Provided is a wireless charging apparatus for performing wireless charging of an electronic device including a receiving coil located in a three-dimensional (3D) wireless charging zone using a plurality of transmitting coils arranged in the 3D wireless charging zone and at least one power source configured to supply a current to the plurality of transmitting coils.

Abstract: A lamp is provided that includes a housing including a light projecting end and a base having an electrical connector for connection with a lamp fixture; and a light engine including light emitting diodes (LEDs) that is positioned at the light projecting end of the housing. A driver assembly may be in electrical communication with the electrical connector of the base of the housing. In some embodiments, an inductive connection is positioned between the driver assembly and the light engine. The inductive connection may include a transmission coil in the driver assembly, and a receiver coil in the light engine that provides for the transfer of energy magnetically from the driver assembly to the light engine.

Abstract: A method for manufacturing high frequency signal transmission structure comprises: providing two dielectric layers, each of the two dielectric layers defining a top surface and a bottom surface and comprising a channel with a bottom open end opened at the top surface and a top open end opened at the bottom surface, an inner diameter of the each of the two channels gradually reducing further from the top open end to the bottom open end; providing a circuit layer with a transmission portion; providing two copper plates; combining the circuit layer, the two dielectric layers and the two copper plates to form a combination; providing a shielding layer around the two air chambers; and providing at least one solder mask covering the shielding layer. The present disclosure also provides a high frequency signal transmission structure obtained by the method.

Abstract: Nanopillar-based closed ring resonator (CRR) MMs, utilizing displacement current in the nano gap medium between nanopillars that significantly increases energy storage in the MMs, leading to an enhanced Q-factor of at least 11000. A metallic nanopillar array is designed in the form of a closed ring (e.g., square-shape) CRR.

Abstract: Embodiments of the present disclosure provide a radio frequency (RF) conductive medium for reducing the undesirable insertion loss of all RF hardware components and improving the Q factor or “quality factor” of RF resonant cavities. The RF conductive medium decreases the insertion loss of the RF device by including one or more conductive pathways in a transverse electromagnetic axis that are immune to skin effect loss and, by extension, are substantially free from resistance to the conduction of RF energy.

Abstract: A radio-frequency filter with at least one dielectric multi-mode resonator is provided. The resonator includes a metal housing with a top surface, a bottom surface, four sectors between the top and bottom surfaces, and including a resonator cavity therein. The resonator further includes a dielectric body positioned inside the cavity, the dielectric body having a first thickness between the top and bottom surfaces of the cavity, wherein there is a gap between the sectors of the housing and the dielectric body, the dielectric body including a hollow on the surface facing the top surface of the housing and on the surface facing the bottom surface of the housing, the dielectric body thus having a second thickness at the location of the hollows, the second thickness being smaller than the first thickness.

Abstract: A metamaterial resonator structure having a size for resonating a predetermined frequency band. The resonator structure includes one or more dielectric slabs each having a top surface and a bottom surface. A conductive resonator element is configured on the top surface of each dielectric slab and has a crescent shape including a center portion and opposing rounded end portions defining a gap therebetween, where the center portion has a wider dimension then the end portions so that a width of the element gradually tapers from the center portion to the end portions, and where the conductive element has a diameter that is a fraction of a wavelength of the frequency band. Several dielectric slabs can be stacked on top of each other, where each slab has a different size and each conductive resonator element is a different size so that each resonator resonates a different portion of the frequency band.

Abstract: A frequency reflecting unit is provided. The frequency reflecting unit is used as a portion of a frequency reflector. The frequency reflecting unit with a three-dimensional structure includes a metal pattern and at least one via. The metal pattern is disposed on a metal layout layer defined on one side of the frequency reflecting unit. One end of the via is disposed corresponding to the metal pattern. The via forms a non-zero angle with the metal layout layer. The other end of the via is an open circuit.

Abstract: Disclosed is a method for transferring energy wirelessly including transferring energy wirelessly from a first resonator structure to an intermediate resonator structure, wherein the coupling rate between the first resonator structure and the intermediate resonator structure is ?1B, transferring energy wirelessly from the intermediate resonator structure to a second resonator structure, wherein the coupling rate between the intermediate resonator structure and the second resonator structure is ?B2, and during the wireless energy transfers, adjusting at least one of the coupling rates ?1B and ?B2 to reduce energy accumulation in the intermediate resonator structure and improve wireless energy transfer from the first resonator structure to the second resonator structure through the intermediate resonator structure.

Abstract: An electrical connector electrically connects a first printed circuit board and a second printed circuit board, where the electrical connector includes: (a) an insulative housing; (b) a plurality of signal conductors, with at least a portion of each of the plurality of signal conductors disposed within the insulative housing; (c) each of the plurality of signal conductors having a first contact end, a second contact end and an intermediate portion therebetween; and (d) a passive circuit element electrically connected to the intermediate portion of each of the plurality of signal conductors, where the passive circuit element is housed in an insulative package and includes at least a capacitor or an inductor.

Abstract: A metamaterial simultaneously exhibiting a relative effective permeability and a relative effective permittivity below unity over a wide bandwidth, including: one of a two-dimensional and a three-dimensional arrangement of unit cells, wherein each of the unit cells has a magnetic dipole moment and an electric dipole moment that are dependent upon one or more of an incident magnetic field and an incident electric field; and a coupling mechanism operable for coupling one or more of the incident magnetic field and the incident electric field to one or more devices. Optionally, the coupling mechanism includes one or more of a split ring and a pair of parallel plates coupled by one of a rod and a wire. The one or more devices are non-Foster elements.

Abstract: Provided is a signal transmission device including a high-frequency signal waveguide that transmits a high-frequency signal emitted from an electronic device. When the electronic device is arranged close to the high-frequency signal waveguide, the high-frequency signal is transmitted via the high-frequency signal waveguide.

Abstract: A resonant coupler includes, on the main surface of a first dielectric substrate: a first resonant line disposed in a circumferential shape and having proximate first and second ends; an input line into which a signal is inputted; and a first connecting line that grounds a first end of the first resonant line, and, similar to the first dielectric substrate, includes, on the main surface of a second dielectric substrate: a second resonant line; an output line; and a second connecting line. When viewed in a direction perpendicular to the main surface of the first dielectric substrate, the first resonant line and the second resonant line have substantially matching contours, and the first resonant line and the second resonant line have a combined shape that is symmetrical about a line.

Abstract: An optical source includes a semiconductor optical amplifier that provides an optical signal, and a photonic chip with first and second ring resonators that operate as Vernier rings. When the optical source is operated below a lasing threshold, one or more thermal-tuning mechanisms, which may be thermally coupled to the first ring resonator and/or the second ring resonator, may be adjusted to align resonances of the first ring resonator and the second ring resonator based on measured optical power on a shared optical waveguide that is optically coupled to the first and second ring resonators. Then, when the optical source is operated above the lasing threshold, a common thermal-tuning mechanism may be adjusted to lock the aligned resonances with an optical cavity mode of the optical source based on a measured optical power on an optical waveguide that is optically coupled to the first ring resonator.

Abstract: An AC coupler for transmitting high-frequency components of a wideband signal includes a signal conductor and a shielding structure arranged as a transmission line. The signal conductor includes a conductive element and a capacitor configured to block direct current (DC) components of the wideband signal while transmitting high-frequency alternating current (AC) components of the wideband signal. The shielding structure is configured for conducting at least the AC components of the wideband signal while confining electric fields and currents in the shielding structure substantially to a region proximate to the signal conductor. The shielding structure has a width substantially greater than a width of the signal conductor. The difference between the shielding structure width and the signal conductor width may be substantially greater than an offset distance between the signal conductor and the shielding structure.

Abstract: Disclosed herein is a power relaying apparatus provided between: a power supplying apparatus including a power supplying resonance device and a power supplying power supply section for supplying an AC current to the power supplying resonance device; and a power receiving apparatus having a power receiving resonance device for receiving a power from the power supplying apparatus by adoption of a resonance method, the power relaying apparatus including a power relaying resonance device resonating between the power supplying resonance device and the power receiving resonance device, wherein the power relaying resonance device is fixed at a predetermined position by making use of an insulation member.

Abstract: Disclosed are an apparatus and a method for charging power using a resonant coupling. The apparatus includes a transmission power converter for converting Direct Current (DC) power to Alternating Current (AC) power, a controller for adjusting a Q factor of a transmission resonator by using a frequency of the converted AC power and a resonant frequency of the transmission resonator and controlling adaptive impedance matching, and a transmission resonator for wirelessly transmitting the converted AC power to a receiver through the adjusted Q factor and the controlled adaptive impedance matching, the transmission resonator having a coil installed in the transmitter.

Abstract: A microplasma generator includes first and second conductive resonators disposed on a first surface of a dielectric substrate. The first and second conductive resonators are arranged in line with one another with a gap defined between a first end of each resonator. A ground plane is disposed on a second surface of the dielectric substrate and a second end of each of the first and second resonators is coupled to the ground plane. A power input connector is coupled to the first resonator at a first predetermined distance from the second end chosen as a function of the impedance of the first conductive resonator. A microplasma generating array includes a number of resonators in a dielectric material substrate with one end of each resonator coupled to ground. A micro-plasma is generated at the non-grounded end of each resonator. The substrate includes a ground electrode and the microplasmas are generated between the non-grounded end of the resonator and the ground electrode.

Abstract: A box mapper has (i) a frame configured to receive a sample box of RFID-tagged sample vials and (ii) a set of antennae configured to read the vial RFID tags of the sample vials to determine the identity and position of each sample vial in the sample box. In one embodiment, the set of antennae include two mutually orthogonal subsets of biphase digit antennae.

Abstract: A plasma generation device, a system including a plasma generation device, and a method of generating plasma and vacuum UV (VUV) photons are described. In a representative embodiment, plasma generation device, includes: a substrate having a first surface and a second surface; a resonant ring-shaped structure disposed over the first surface of the substrate, the resonant ring-shaped structure having dimensions selected to support at least one standing wave having more than one electric field maximum along a length of the resonant ring-shaped structure; a ground plane disposed on the second surface of the substrate; and an apparatus configured to provide a gas at locations of the electric field maxima.

Abstract: The purpose is to adjust a characteristic of the isolation circuit with a simple control.

Abstract: A wireless power transmission system and a multi-mode resonator in the wireless power transmission system are provided. The multi-mode resonator includes a transmission line portion including unit-cells, the unit-cells including respective ends connected to each other, and each of the unit-cells including a capacitor, an inductor connected in parallel to the capacitor, and a via. The multi-mode resonator further includes a ground conducting portion configured to provide an electrical ground to the transmission line portion through the via of each of the unit-cells.

Abstract: Embodiments of the invention relate to a silicon semiconductor device, and a conductive paste for use in the front side of a solar cell device.

Abstract: An electromagnetic resonance coupler includes: a transmitting resonator provided on a transmission substrate and having an open loop shape having an opening, first wiring provided on the transmission substrate and connected to a first connection point on the transmitting resonator, a receiving resonator provided on a reception substrate, second wiring provided on the reception substrate and connected to a second connection point on the receiving resonator, and third wiring provided on the reception substrate and connected to a third connection point on the receiving resonator. When viewed in a direction perpendicular to a main surface of the transmission substrate, the transmission substrate and the reception substrate face each other so that the transmitting resonator and the receiving resonator are symmetric about a point and have matching contours.