11results about How to "Improve coupling strength" patented technology

The invention relates to a multi-absorption-band ultra-wideband common-mode filter based on a mixed resonator structure. The multi-absorption-band ultra-wideband common-mode filter comprises a coupling microstrip line, a dielectric substrate, a main resonator, an auxiliary resonator and a resistor, the filter has an upper surface and a lower surface, and a coupling microstrip line comprises a metal conduction band located on a dielectric substrate and a metal ground layer located below the dielectric substrate; two ends of the coupling microstrip line are respectively connected with the input port and the output port; the main resonator is etched in the middle of the metal ground layer; the auxiliary resonator is etched on the outer side of the main resonator in the metal ground layer; the coupling microstrip line is mutually coupled with the main resonator and the auxiliary resonator to realize mixed resonance; the resistor crosses the gap of the auxiliary resonator at the intersection of the auxiliary resonator and the symmetric line, and the two ends of the resistor are connected with the metal ground layers inside and outside the metal conduction band; according to the invention, the ultra-wideband common-mode suppression bandwidth and a plurality of absorption bands are provided, and the absorption bands dissipate common-mode noise in the form of heat energy, so that the problem of potential common-mode electromagnetic interference in the system is reduced, and normal transmission of differential-mode signals is not damaged at the same time.

The invention relates to a miniaturized broadband power dividing filter applied to an X frequency band. The antenna comprises a metal layer and a dielectric substrate layer, and the metal layer is divided into two layers including an upper metal layer and a lower metal layer; the upper metal layer comprises a section of input feeder line, a first output feeder line, a second output feeder line, an isolation resistor, a first filtering branch knot and a second filtering branch knot, and each of the first filtering branch knot and the second filtering branch knot comprises two same dual composite left and right hand resonance units; the lower metal layer is of a metal grounding plate structure, and two grooves are formed in the metal grounding plate. According to the invention, the sub-wavelength characteristic is fully utilized, the miniaturization of the circuit is realized, the defect of overlarge size of a traditional cascade scheme is effectively overcome, and the circuit is suitable for a high-frequency (x-waveband) application scene. The whole structure is based on the double-sided microwave dielectric plate, has the advantages of simple processing and low cost, and is suitable for large-scale production.

A battery pack includes: a battery cell; a circuit board configured to collect state information about the battery cell; and a connection line configured to transmit the state information about the battery cell to the circuit board and including a link line and a board connection pad, wherein the link line extends from a side of the battery cell toward the circuit board, and the board connection pad extends from a first end portion, to which the link line is connected, and is coupled to the circuit board while facing the circuit board, wherein the board connection pad includes: outer soldering portions formed in an outer region of the board connection pad and concave toward the outside of the board connection pad; a gas discharge hole formed in a closed loop shape in an inner region of the board connection pad; and an inner soldering portion formed along the gas discharge hole. According to the present disclosure, the electrical connection between the connection line and the circuit board may be stably maintained with high reliability for transmitting state information about the battery cell, and manufacturing costs may be reduced by simplifying manufacturing processes.

The invention discloses a resonance regulation and control system based on symmetry control. The resonance regulation and control system comprises a low-symmetry metal spiral structure and an excitation microstrip circuit. The low-symmetry metal spiral structure is composed of four metal spiral arms, and the four metal spiral arms have two different lengths. The excitation microstrip circuit sequentially comprises a metal strip, a dielectric substrate layer and a metal ground plane; the resonator introduces an electromagnetic resonance mode excited by a first-order current through the asymmetric design of a low-symmetry metal spiral structure, and realizes the regulation and control of resonance characteristics.

The application discloses a 750-850nm waveband photonic crystal surface emitting laser and a preparation method, and belongs to the field of semiconductor lasers. The application is divided into surface etching and buried photonic crystal layer structures, uses n-GaAs as a substrate, combines surface etching or buried photonic crystal structures, uses amorphous silicon, titanium oxide, GaP or AlGaAs as main materials of a resonant cavity, utilizes large-area in-plane resonance and high coupling with a quantum well active layer, realizes low-loss resonance and optical gain, and realizes a 750-850nm waveband semiconductor laser with high light beam quality, high power and surface emission.

The invention provides a method for preparing a photonic crystal fiber with sensing and filtering functions. The method comprises the specific steps that a first layer of air holes are formed in the circle center of quartz; by taking the first layer of air holes as the center, two second type of air holes and three third type of air holes are formed in the periphery of the first layer of air holes along a regular hexagon; by taking the first layer of air holes as the center, two first type of air holes and nine third type of air holes are formed in the periphery of the first layer of air holes along a regular hexagon; thirteen third-type air holes are formed in the periphery of the first-layer air holes in a regular hexagon mode with the first-layer air holes as the center; and preparing a preform according to the arranged cladding, melting and drawing wires, and depositing gold on a polished plane to obtain the photonic crystal fiber, and immersing the photonic crystal fiber in a liquid to be detected when in use. According to the invention, integration of the optical fiber sensor and the filter is realized, high-sensitivity sensing is realized in the X polarization direction, and polarization filtering with adjustable bandwidth and high extinction ratio is realized in the Y polarization direction.

The application relates to a single-molecule transistor structure coupled with a THz wave band and a preparation method thereof. The single-molecule transistor structure comprises a silicon substrate, a gate, a gate dielectric layer, a source and a drain matched with the gate control, a split ring resonator structure, a peripheral electrode and a single-molecule active region located at a nanometer / sub-nanometer gap of the source and the drain. Through the structure and the method, a significant terahertz local field enhancement can be obtained in the gap region where the molecules are located while the transistor characteristics and the device stability are ensured, and an implementable process path is provided for the construction and application research of the single-molecule coupling device in the terahertz wave band.

This invention provides a machine learning-based method and system for predicting changes in karst carbon sinks. It acquires environmental baseline data and measured carbon sink data for karst areas, and constructs a dynamic coupling body for karst carbon sinks, including elements such as real-time correlation links. A pre-trained carbon sink evolution prediction model is initiated to perform bidirectional interactive modeling with this coupling body. The carbon sink evolution prediction model generates feature iteration instructions to drive feature updates in the coupling body, and the coupling body provides feedback on feature change signals to correct model parameters, obtaining intermediate results from multiple rounds of interactive modeling. Based on these intermediate results, operations such as correlation link strengthening are performed on the coupling body to obtain the evolved coupling body. The carbon sink evolution prediction model is then used to perform cross-dimensional feature decoding and correlation trend inference on the evolved coupling body to generate karst carbon sink change prediction results. This invention considers the relationship between environmental factors and carbon sinks, improving prediction accuracy and adaptability through dynamic interaction and optimization.

The invention provides a C4 asymmetric topological photonic crystal angular state coupling-based Fano filter, which is composed of a topological boundary state optical waveguide and one or more topological angular state resonant cavity structures, and Fano resonance is realized between the topological boundary state optical waveguide and the topological angular state resonant cavity structures through a coupling interface; the topological boundary state optical waveguide and the topological angular state resonant cavity are both constructed based on C4 asymmetric topological photonic crystals. Through a plurality of topological angular state resonant cavities and adjustment of the sizes of dielectric cylinders at the corners of the resonant cavities, the local field intensity can be enhanced, zero-dimensional optical localization is realized, and selective optical filtering of two or more specific frequencies is realized. The filter provided by the invention can realize an efficient single-frequency or multi-frequency-band optical filtering function, and provides a new scheme for the application of a topological photonic device in optical communication.

The application provides a broadband filtering device and a multi-system access platform, and relates to the technical field of multi-system access platforms, wherein the broadband filtering device comprises a dielectric substrate, a resonator arranged on the surface of the dielectric substrate, and a plurality of input units arranged around the resonator; each input unit comprises a first coupling line, a second coupling line and an input piece arranged on the surface of the dielectric substrate; the first coupling line and the second coupling line are connected with the input piece; the first coupling line and the second coupling line are coupled with the resonator; and the input piece is used for inputting an electric signal. The broadband filtering device and the multi-system access platform provided by the application solve the problem of narrow bandwidth of the filtering device in the prior art.

Disclosed is an electrode assembly, in which a first electrode, a second electrode, and a separator interposed therebetween are wound based on a winding axis to define a core and an outer circumference. The first electrode includes an active material portion coated with an active material layer and a first non-coated portion not coated with the active material layer along a winding direction, and at least a part of the first non-coated portion is used as an electrode tab in itself. The first non-coated portion includes a plurality of impregnation slits formed along a circumferential direction of the electrode assembly. Longitudinal extension lines of impregnation slits adjacent to each other along the circumferential direction do not overlap each other.