37 results about "Near field coupling" patented technology

The invention relates to the technical field of electromagnetic metasurfaces and bionic computing, and discloses a bionic information processing method and system based on an electromagnetic metasurface. The method comprises the following steps: S1, mapping DNA sequence information into a multi-dimensional coding state of the bionic metasurface information processing unit in an electromagnetic adjustable parameter space; s2, realizing co-evolution of the multi-dimensional coding state in space, frequency, phase and amplitude dimensions by dynamically regulating and controlling electromagnetic response parameters of the bionic metasurface information processing unit; and S3, using propagation and interference of electromagnetic waves in the diffraction neural network and a near-field coupling effect between the bionic metasurface information processing units to complete copying, logical operation and information read-write operation of the DNA sequence information. The functions of DNA coding, copying, logic calculation, information reading and writing and the like are uniformly mapped into the programmable electromagnetic metasurface platform, and cooperative processing of information in the aspects of space, electromagnetism and algorithm is achieved.

The invention provides a low-power-consumption near-field coupling energy supply OTA circuit, belongs to a wireless software upgrading technology, aims to solve the wireless upgrading problem of a GNCE control system, and comprises a near-field coupling energy supply module which is used for locally supplying energy to the system, eliminating system placement direction limitation and switching resonant frequency through a self-adaptive resonance matching unit to realize the optimal energy supply efficiency. A primary power supply is output to the power management module, and the energy supply state is monitored in real time; the power management module is used for providing a secondary power supply for the OTA security upgrade verification module and the OTA upgrade task execution module according to a preset power-on time sequence and an enabling sequence; the OTA security upgrading verification module is used for judging the security of a system and a source program, confirming feedback through double channels of a visual signal and a wireless encryption signal, ensuring the security and accuracy of an upgrading process, supporting remote and local double supervision and preventing software burning failure and tampering; and the OTA upgrade task execution module executes the functions of upgrade process control, state monitoring, program receiving, verification, backup, burning, rollback and the like.

The invention provides a near-field feed low-complexity reconfigurable antenna system, which belongs to the technical field of millimeter wave communication antennas and comprises a 1-bit phased array, a waveguide feed horn array and an air gap between the 1-bit phased array and the waveguide feed horn array. The 1-bit unit is composed of two magnetoelectric dipoles, and two diodes are integrated in the receiving unit to achieve 1-bit phase control. According to the 1-bit reconfigurable magnetoelectric dipole phased array disclosed by the invention, one horn mouth surface is used as a near-field feed source of the 2 * 2 magnetoelectric dipole sub-array, so that not only is the uniformity of aperture irradiation ensured through near-field coupling, but also the number of required phase shifters is reduced, and the excitation of the 1-bit reconfigurable magnetoelectric dipole phased array is conveniently realized. The waveguide phase shifter is directly integrated in the horn array antenna, by means of the working phase range wide enough, the phase shifter can effectively achieve phase distribution needed by array near-field feed, and mirror lobes in scanning beams are successfully suppressed. The reconfigurable array antenna is high in aperture efficiency, low in profile and simple in structure, and has the broadband scanning capability.

This invention relates to the field of medical device technology, and more particularly to an intelligent probe patch for monitoring blood circulation in microscopic free flaps, comprising: a disposable probe patch configured to be attached to the surface or edge of the free flap; a biocompatible adhesive layer is provided on the bottom surface of the flexible base of the disposable probe patch, and an auxiliary structure is provided on the top of the flexible base to resist postoperative tissue activity or secretions; the disposable probe patch integrates an optical sensing unit and a temperature sensing unit for collecting local blood oxygen saturation, pulse rate, and surface temperature of the flap, respectively; a repeater, establishing non-contact near-field coupling with the disposable probe patch, the repeater being configured to provide working power to the disposable probe patch through near-field coupling, enabling it to operate without a built-in battery; and synchronously receiving physiological parameter data reflecting the local microcirculation status of the flap collected by the disposable probe patch; and a terminal device, wirelessly connected to the repeater, receiving and processing the physiological parameter data.

This invention belongs to the field of near-field communication technology, and specifically relates to a near-electric field coupled wireless networking communication system and method for completely buried spaces. It includes: a plurality of slave communication nodes for collecting environmental data of the surrounding space; these slave communication nodes are spaced apart on a metal cable in the goaf and communicate with other nodes via near-field coupling through the metal cable, forming a wireless network with each slave communication node and its corresponding metal cable; and a main communication node for aggregating environmental data from each slave communication node and connecting to a host computer to achieve goaf environmental monitoring. The main communication node is located at the coal face, with one end of the metal cable connected to the main communication node and the other end extending longitudinally through the goaf and into the completely buried space. This invention uses symmetrical electric dipole antennas of the communication nodes to couple electric field signals to the metal cable or to sense electric field signals fed back from other nodes on the metal cable for wireless networking communication. Under completely buried conditions, it can ensure the communication quality of communication nodes near the metal cable.

The utility model relates to the cable field, and especially relates to a multichannel isolation shielding cable comprising a cable core, a composite shielding layer, a filling layer and a protection layer, the composite shielding layer wraps the cable core, and the filling layer is filled between the composite shielding layer and the protection layer; the composite shielding layer comprises an inner shielding layer, an insulating layer and a shielding tape layer, the inner shielding layer wraps the outer side of the cable core, the insulating layer wraps the outer side of the inner shielding layer, the shielding tape layer wraps the insulating layer, and a bonding layer is arranged on the side, making contact with the insulating layer, of the shielding tape layer. According to the utility model, near-field coupling and frequency band cross interference among the wire cores can be effectively reduced, and the anti-interference capability of the cable is significantly improved.

The application discloses a flexible metasurface integrated antenna for robot energy-carrying communication, which has wireless energy collection and communication functions and is a double-layer flexible substrate structure with two input ports, one port for wireless energy collection and the other port for edge radiation and end radiation wireless communication of different frequency bands. Wireless energy collection is achieved by means of a metasurface antenna, a metasurface unit of which is composed of a joint structure of an open ring slot and an I-shaped slot in the top layer, a floor embedded with a complementary open ring slot in the middle layer and a feed network with functions of feeding and combining in the bottom layer; end radiation of the wireless communication antenna is achieved by means of a Vivaldi structure in the middle layer, and edge radiation is achieved by means of two half-circular folded open rings placed face to face and located above the middle axis of two radiation arms of the Vivaldi and placed in the top layer and excited by the near-field coupling of the Vivaldi. The flexible metasurface integrated antenna is covered on the surface of mechanical parts such as robot hands, feet, arms and waists and is used for energy supply and communication control of various drivers.

The application relates to the field of semiconductor technology and discloses a microwave reflection photoconductance measurement system for wafer film carrier lifetime, which comprises a reconfigurable differential metasurface probe, which interacts with a wafer film to be measured in a near-field coupling mode; an optical excitation module, which performs pulsed light irradiation on the wafer film below a measurement area to generate non-equilibrium carriers; a dual-channel microwave transceiving module, which feeds microwave signals to the measurement area and a reference area; a closed-loop feedback control module, which receives the differential signal as input before the optical excitation module works; and a data acquisition and processing module, which collects transient changes of the differential signal after the optical excitation module works. The closed-loop feedback control module actively adjusts the microwave response of the reconfigurable probe reference area, the differential signal baseline is locked to zero before measurement, common-mode noise is suppressed, and the signal-to-noise ratio of the transient decay curve and the measurement accuracy are improved.

The invention discloses a Janus antenna array device and method for realizing one-way near-field coupling of a coupling surface. More flexible near-field directional excitation of light is realized. The device of the Janus antenna array for realizing the unidirectional near-field coupling of the coupling surface comprises a feed network structure and an outer coupler, the outer coupler comprises two dielectric waveguides which are parallel to each other, and the two dielectric waveguides are arranged at an interval to form an assembly space; the feed network structure comprises a feed network and a plurality of Janus antennas based on Janus dipoles, the Janus antennas are connected to the feed network, the Janus antennas are arranged in the assembly space in an array mode, each Janus antenna is provided with an electric dipole and a magnetic dipole, and the electric dipoles and the magnetic dipoles are perpendicular to each other and have phase differences. The magnetic dipoles correspond to the width direction of the assembly space, and the electric dipoles correspond to the length direction of the assembly space so as to excite quasi-TM waves in the dielectric waveguide.

The invention provides an electromagnetic scattering modeling method guided by physical information, and relates to the technical field of radar detection and remote sensing imaging, and the method comprises the steps: processing the three-dimensional discrete surface information of a target object, and obtaining electromagnetic scattering point cloud data; the method comprises the following steps: establishing an edge according to distance between points and curvature similarity by using electromagnetic scattering point cloud data, and endowing the edge with a weight reflecting near-field coupling strength to obtain a near-field physical sparse graph; constructing an electromagnetic scattering prediction model by using an encoder and a decoder; and based on the residual constraint of the electric field integral equation, training the electromagnetic scattering prediction model by using the near-field physical sparse graph to obtain a trained electromagnetic scattering prediction model, and completing electromagnetic scattering modeling. The problems that an electromagnetic scattering modeling method is high in calculation complexity and a pure data driving method lacks physical consistency are solved.

The application discloses a GNSS side signal injection method and device for a UAV nest and related media, which comprises coordinate matching correction on dynamic positioning data, triggering the injection module to perform power-on self-test to inject test signals and detect loss, setting initial gain, performing near-field coupling injection on GNSS side signals received by the nest side, and dynamically adjusting the relay gain to a target interval according to a preset closed-loop adjustment algorithm to obtain gain optimization data; performing steady-state determination on the gain optimization data, respectively determining take-off release and coupling removal, and integrating output reset learning data. The application sets the initial gain and injects the GNSS side signals received by the nest side in a near-field coupling mode to enhance, finally determines the take-off release and coupling removal in combination with take-off transition data through a series of calculations, and outputs reset learning data, so that the satellite signal receiving capability of the UAV is effectively improved without changing the UAV body structure.

The invention relates to a quantum sensing microsystem and method. Comprising optical coupling between a light source and a grating coupler, integration of the grating coupler on a main optical waveguide, evanescent field coupling between the main optical waveguide and a diamond NV color center, near-field coupling between the main optical waveguide and an optical filter, and evanescent field coupling between the optical filter and a photodiode. The light source is used for emitting laser and enabling the laser to enter the grating coupler; the grating coupler is used for transmitting the laser to the diamond NV color center through the main optical waveguide, and the diamond NV color center emits fluorescent light according to laser excitation; the optical filter is used for filtering laser and coupling fluorescence to the photodiode through an evanescent field; the photodiode is used for generating a corresponding digital signal based on the fluorescence, and the digital signal is used for calculating a magnetic field measurement result of the to-be-measured magnetic field where the quantum sensing microsystem is located. According to the invention, the size of the quantum sensing system can be reduced.

This invention discloses a terahertz biosensing metasurface based on the Jones singularity, belonging to the field of terahertz metasurface technology. The metasurface comprises two orthogonally oriented metal open-loop resonator arrays and a dielectric spacer layer between the two layers. By making the upper layer's opening width L1 different from the lower layer's characteristic dimension L3, the two orthogonal polarization modes have different ohmic loss rates. Simultaneously, the interlayer near-field coupling strength is controlled by an in-plane displacement L2. When the combination of these two factors causes a cross-polarized transmission component of the Jones transmission matrix under circularly polarized basis vectors to drop to zero at the target frequency, the system is locked at the Jones singularity. This invention utilizes the square root topological enhancement of the second-order branch point, and the device exhibits highly sensitive intrinsic transmission amplitude splitting at the singularity to weak dielectric perturbations, making it suitable for label-free, ultrasensitive biosensing.

The application discloses a short offset transient electromagnetic method super-deep detection system and a signal analysis method, relates to the technical field of geological detection, and comprises a signal receiving and collecting adaptive module, an original signal preprocessing module, a geometric effect correction and deep gain reconstruction module, a layered response separation module, an inversion imaging and prior constraint module and an analysis result output and visualization module. The near-field coupling, amplitude and phase distortion and deep energy attenuation caused by the short offset are systematically compensated through the quantitative geometric effect correction and the depth self-adaptive gain reconstruction. The mechanism not only synchronously recovers the late and weak amplitude signal in the time domain and the phase domain, but also maintains the amplitude and phase consistency, ensures the use of the homologous and comparable data input for the subsequent layered separation and inversion, and fundamentally expands the applicability of the short offset transient electromagnetic method to the super-deep target. Compared with the method of increasing the transmission or expanding the array, the scheme can stably extract the deep response when the equipment and the field layout are limited, and fundamentally expands the applicability of the short offset transient electromagnetic method to the super-deep target.

The invention discloses a multiband tunable electromagnetic induction-like transparent metamaterial and application, and belongs to the technical field of electromagnetic induction transparent metamaterials. The multiband tunable electromagnetic induction-like transparent metamaterial comprises a plurality of periodically arranged structural units, each structural unit comprises a substrate, a graphene metasurface is arranged on the upper surface of each substrate, and each graphene metasurface comprises a rectangular resonator, a first split-ring resonator and a second split-ring resonator. The second split-ring resonator is located between the first split-ring resonator and the rectangular resonator, and the bottom of the second split-ring resonator is nested in the first split-ring resonator; the rectangular resonator, the first opening resonance ring and the second opening resonance ring generate three similar electromagnetic induction transparent windows in the terahertz wave band through the near-field coupling effect. According to the multiband tunable electromagnetic induction-like transparent metamaterial and the application, three high-transmittance transparent windows are generated in a terahertz wave band, a remarkable slow light effect is achieved, and the transmission amplitude, the center frequency and the slow light effect of the transparent windows are adjusted by adjusting the Fermi level of graphene.

The invention relates to the technical field of wireless communication, in particular to a dual-frequency broadband onboard IFA antenna based on tail end coupling splitting, which comprises a low-frequency radiation branch knot, a high-frequency radiation branch knot and a short-circuit branch knot grounding part connected with the low-frequency radiation branch knot, wherein the short-circuit stub grounding is responsible for adjusting impedance and optimizing antenna performance; the tail end of the low-frequency radiation branch knot is located in an area adjacent to the tail end of the high-frequency radiation branch knot, the low-frequency radiation branch knot and the high-frequency radiation branch knot form strong electromagnetic near-field coupling in a resonance area, high-frequency current is enabled to generate controllable splitting at the tail end of the branch knot, a double-tip current distribution mode is formed, and a low-frequency branch knot-high-frequency branch knot space near-field coupling relation is constructed in a geometric tail end area. And the high-frequency current forms double-tip distribution through a tail end coupling splitting mechanism, multi-mode superposition of a main high-frequency resonant mode and a split parasitic mode is generated, the high-frequency bandwidth can be improved without additional parasitic branches, and the high-frequency band coverage requirement is met.

The application belongs to the technical field of medical apparatus and instruments, and discloses a non-contact tumor cell in-vitro screening device and method, which comprises a wireless radio frequency probe built-in wideband radio frequency transceiver antenna unit, a multi-stage adjustable impedance matching network, a near-field coupling radiation structure and a radio frequency detection circuit, which are used for transmitting 1MHz-100GHz frequency band electromagnetic waves and synchronously receiving echo signals and near-field scattering signals; a signal processing system is connected with the wireless radio frequency probe and is used for pre-processing and feature extraction of the dual-mode signals; a control unit is internally provided with an AI fusion system, which is used for feature fusion analysis of the pre-processed dual-mode signals and outputs a benign and malignant determination result; the AI fusion system comprises an IC-CF-DMAS image reconstruction module, a one-dimensional convolutional neural network module, a cross-attention fusion module, a weighted voting decision module and a classification head, realizes deep interaction and accurate determination of cross-modal features, and realizes low cost, no radiation, rapidness, non-invasiveness, portability and high accuracy of early tumor screening.

This specification provides a near-field communication (NFC) device testing fixture, system, method, apparatus, and medium. The solution includes: a near-field coupling antenna for near-field electromagnetic coupling with the near-field communication antenna of the device under test (DUT); a radio frequency (RF) switch electrically connected to the near-field coupling antenna; and a control unit communicatively connected to the RF switch, configured to: in response to a control command, control the RF switch to connect the near-field coupling antenna to a network analyzer to perform passive RF performance testing of the DUT; and control the RF switch to connect the near-field coupling antenna to a near-field communication reader / writer to perform active interactive testing of the DUT.

The invention belongs to the field of wireless communication antennas, and particularly discloses a multi-band integrated antenna and a communication system. According to the invention, the upper, middle and lower antenna units with different working frequency bands are coaxially stacked from top to bottom along the vertical central axis, so that the three-dimensional compact integration of the multi-frequency-band antenna in a limited space is realized, and the wide requirement of horizontal layout on the installation space is fundamentally avoided. Then, the antenna protection cover and the supporting structure are enclosed to form an internal cavity, the middle unit and the lower unit are accommodated in the internal cavity, meanwhile, the top end of the internal cavity provides an independent radiation space for the upper unit, and the physical isolation structure effectively blocks near-field coupling between different antenna units. Finally, compared with the prior art, the scheme has the advantages that the co-location interference is remarkably reduced through the stacking and isolation integrated design while the multi-band function is ensured, so that the communication quality and reliability of the communication platform are improved.

The utility model relates to the technical field of electronic tags, in particular to a wave-shaped electronic tag for textile tracking, which comprises a cloth layer, a near-field coupling module, a far-field antenna and a covering layer, the far-field antenna is arranged in the cloth layer, the near-field coupling module in mutual capacitance coupling with the far-field antenna is arranged near the midpoint of the far-field antenna, and the near-field coupling module is arranged near the midpoint of the far-field antenna. The near-field coupling module is a wave-shaped metal wire, the far-field antenna is a wave-shaped metal wire, the length of the wave-shaped metal wire ranges from 8cm to 15cm, and the near-field coupling module and part of the far-field antenna nearby the near-field coupling module are packaged in the covering layer together. In order to overcome the defects that an embedded far-field antenna needs to be specially processed in advance, a whole roll of far-field antenna is sewn into cloth in advance and then is cut according to requirements, so that the purpose of rapid production is achieved, the preparation process is simple, and the reading performance is also kept stable and efficient.

Provided in the present application are a battery management system and an electric vehicle. The battery management system comprises a battery, a wireless bridge chip and a main controller, wherein the battery comprises a plurality of battery cells, and a battery cell acquisition board is integrated onto each battery cell; the wireless bridge chip is in communication connection with the battery cell acquisition board on each battery cell by means of a near-field coupling line; and the main controller is connected to the wireless bridge chip by means of a communication line.

The invention provides a power grid multi-disaster coupling risk early warning method and system, and relates to the technical field of power system safety protection, and the method comprises the steps: obtaining full-dimensional power grid environment situation sensing data; the method comprises the following steps: based on full-dimensional power grid environment situation awareness data, extracting dense ground-air data points located at coordinates of a tower base of an electric power tower, a vertex of a substation equipment contour and a joint position of an underground cable pipeline in a main area of a power grid corridor, and forming a near-field coupling base area of a high-dimensional space of a risk awareness triangular pyramid; the method comprises the following steps of: extracting sparse high-altitude data points of a high-spectral satellite image characteristic wave band pixel, a ground penetration point in laser radar point cloud data and a vertical section characteristic in meteorological radar three-dimensional lattice point data to form a far-field correlation top area of a risk sensing triangular pyramid high-dimensional space; according to the invention, accurate early warning of power grid risks can be realized through multi-source data fusion and disaster chain evolution simulation.

The invention relates to the technical field of semiconductors, and discloses a microwave reflected light conductance measurement system for the service life of a wafer film carrier, and the system comprises a reconfigurable differential metasurface probe which interacts with a to-be-measured wafer film in a near-field coupling manner; the optical excitation module is used for carrying out pulse illumination on the wafer film below the measurement area so as to generate non-equilibrium carriers; the dual-channel microwave receiving and transmitting module feeds microwave signals into the measurement area and the reference area; the closed-loop feedback control module is used for receiving the differential signal as input before the optical excitation module works; and the data acquisition and processing module is used for acquiring the transient change of the differential signal after the optical excitation module works. The microwave response of the reference area of the reconfigurable probe is actively adjusted through the closed-loop feedback control module, and a differential signal baseline is locked to a zero point before measurement, so that common-mode noise is suppressed, and the signal-to-noise ratio and the measurement accuracy of a transient attenuation curve are improved.

The invention discloses a GNSS side signal injection method and device for an unmanned aerial vehicle nest and a related medium, and the method comprises the steps: carrying out the coordinate matching correction of dynamic positioning data, triggering an injection module to carry out the power-on self-test, injecting a test signal, detecting the loss, setting an initial gain, carrying out the near-field coupling injection of a GNSS side signal received by a nest side, and carrying out the detection of the loss. Dynamically adjusting the relay gain to a target interval according to a preset closed-loop adjustment algorithm to obtain gain optimization data; steady state judgment is carried out on the gain optimization data, then takeoff release and coupling release are judged respectively, and reset learning data are integrated and output. According to the method, initial gain is set, GNSS side signals received by an aircraft nest side are injected and enhanced in a near-field coupling mode, takeoff release and coupling release are finally judged through a series of calculation in combination with takeoff transition data, and reset learning data are output, so that the unmanned aerial vehicle can be reset without changing the structure of an unmanned aerial vehicle body. And the satellite signal receiving capability of the unmanned aerial vehicle is effectively improved.

The test and measurement system includes a proximity coupling device that transmits a modulated carrier signal and a proximity integrated circuit card that load modulates the transmitted modulated carrier signal to generate a modulated subcarrier signal on the wireless carrier signal. The test and measurement device includes a phase-aligned subcarrier demodulator that acquires the modulated carrier signal and demodulates the carrier signal, including the modulated subcarrier signal. The demodulator detects commands and responses in the modulated carrier signal, removes the commands, and identifies a correlation index for each response. Each correlation index indicates the phase of the modulated carrier signal of the corresponding response relative to the replica carrier signal. The demodulator adjusts the phase of the replica carrier signal based on the correlation index of each response and down-converts each response using the phase-aligned replica carrier signal. The modulated subcarrier signal is low-pass filtered to demodulate the responses.

This invention discloses an infrared detector based on a nano-tip structure, including a camera test box and a lens bracket, as well as an imaging objective, a nano-tip assembly, and a photosensitive array. The photosensitive array consists of multiple photosensitive elements. The nano-tip assembly includes a substrate and a nano-tip array, which includes multiple nano-tip structures. Each nano-tip structure includes a pointed structure and a metal film layer. The metal film layers of any two adjacent nano-tip structures are electrically connected through conductive lines. Each metal film layer of a row of nano-tip structures located at the edge of the nano-tip array is connected to an outgoing wire. Each photosensitive element corresponds to a sub-nano-tip array. The tip of each nano-tip structure points towards a photosensitive element. The nano-tip array and the photosensitive array generate near-field coupling. This invention features high imaging light wave collection efficiency, amplification of incident light through strong electron accumulation at the nano-tip, significantly improved photoelectric sensitivity of conventional visible light detection arrays, and the ability to achieve real-time, in-situ, high-sensitivity detection of weak radiation targets.

The application provides a microwave detection device and method for fiber integrated Rydberg atoms, which comprises an optical excitation module, a bubble echo-wall microcavity, a microwave coupling module, a light splitting module, a signal conditioning module and a main control module; a tapered optical fiber is used to couple the near field of the combined light formed by the detection light and the coupling light into the bubble microcavity, so that the combined light field circulates and propagates in the echo-wall mode and fully interacts with the alkali metal atom vapor to excite a stable EIT spectrum; the microwave coupling module is used to converge the microwave to be detected into the bubble microcavity, and resonates with the atoms in the Rydberg state in the bubble microcavity to induce energy level splitting, so as to modulate the light field transmittance; the signal conditioning module is used to convert the transmitted light led out by the tapered optical fiber from an optical signal into an electrical signal, and extract the spectral characteristics of the microwave to be detected from the electrical signal; and the main control module is used to determine the microwave parameters of the microwave to be detected based on the spectral characteristics. The application improves the detection stability and detection sensitivity of the microwave detection device.

The invention discloses a high-frequency driving circuit electromagnetic interference modeling method considering near-field coupling characteristics. The method comprises the following steps: establishing a high-frequency driving circuit common-mode current loop model comprising a driving power supply path impedance model, a conduction path impedance model and an auxiliary power supply path impedance model; on the basis of the common-mode current loop model, establishing a high-frequency drive circuit electromagnetic interference model considering near-field coupling characteristics; then building a double-pulse test platform; and substituting the extracted parameters into a high-frequency drive circuit electromagnetic interference model, and comparing the parameters with an experimental result to verify the correctness of the model. According to the high-frequency driving circuit electromagnetic interference modeling method considering the near-field coupling characteristic, the influence degree of driving circuit parameters on driving signal interference is quantified, and the root causes of the problems of false triggering, protection failure and the like of the gate driving circuit are revealed; theoretical support is provided for anti-interference optimization design and electromagnetic compatibility prediction of the high-frequency gate drive system of the wide bandgap power device.

The present disclosure refers to a transmission coupler for receiving radio signals carrying consumption data from a utility meter. The utility meter comprises a meter housing wherein a radio frequency transmitter circuit and a meter antenna is arranged. The transmission coupler comprises a coupling antenna, a transmission line or a radio frequency connector for connection of a transmission line and a mechanical connection element. The mechanical connection element is arranged for mechanically connection of the transmission coupler to an outer surface of the meter housing whereby a near field coupling is provided between the meter antenna and the coupling antenna through the meter housing. The transmission line or radio frequency connector is electrically connected to the coupling antenna. The transmission coupler further comprises a displacement element arranged to occupy a volume in the proximity of the coupling antenna, whereby a volume of a medium surrounding the transmission coupler is displaced away from the coupling antenna by the displacement element, such that the influence on the near field coupling by the medium surrounding the coupling antenna is reduced.

The utility model discloses a wireless charging system capable of near field communication, which comprises a transmitting end circuit and a receiving end circuit, the transmitting end circuit comprises a first resonance circuit and a third resonance circuit, the receiving end circuit comprises a second resonance circuit and a fourth resonance circuit, the transmitting end and the receiving end are respectively provided with a signal extraction circuit, and the signal extraction circuits are connected with the transmitting end circuit and the receiving end circuit. High-power energy is transmitted through the first resonance circuit and the second resonance circuit; half-duplex communication and low-power energy transmission between a transmitting end and a receiving end are achieved through a third resonance circuit and a fourth resonance circuit, the half-duplex communication is based on near-field coupling, and power signals are removed through a signal extraction circuit to obtain clean and effective communication signals; the low-power energy transmission provides an auxiliary power supply for the receiving end or the transmitting end. According to the utility model, problems of frequency band congestion, signal interference and complex positioning in communication can be solved, bidirectional auxiliary power supply transmission between a transmitting terminal and a receiving terminal is supported, and a self-power-supply or low-power-consumption wake-up function is realized.