62results about How to "Increased power capacity" patented technology

The invention discloses a liquid metal-based polarized reconfigurable radiation-scattering integrated antenna array, which is composed of four sub-arrays, each sub-array comprises a metasurface antenna layer, a metalized ground layer and a feed network layer, the metasurface antenna layer is formed by periodically arranging units and is placed on the upper surface of a first dielectric plate, and the metalized ground layer is arranged on the upper surface of the first dielectric plate. The antenna is mainly used for realizing circular polarization radiation and reducing a radar cross section. The feed network layer is mainly composed of Wilkinson power dividers and is placed on the lower surface of the second dielectric plate; and a metalized ground layer is arranged between the two dielectric plates. In the feed network layer, the signal transmission path of the feed network is changed by regulating the position of the liquid metal, so that the polarization reconfigurable function of the sub-array is realized; according to the invention, the reduced bandwidth of the radar cross section of the antenna array is expanded by arranging the sub-arrays at different heights. According to the invention, the liquid metal is adopted to control the feed network, the reconstruction of antenna polarization is realized, and the working bandwidth of radar scattering reduction is widened through the unequal-height placement of the sub-arrays.

The invention belongs to the technical field of microwave passive devices, and discloses a millimeter wave duplex power divider based on a multilayer metal gap waveguide and a working method thereof, and the millimeter wave duplex power divider comprises a common channel, a low-frequency filtering power divider and a high-frequency filtering power divider; the input port of the common channel is used for being connected with an electromagnetic wave signal source, and the output end of the common channel comprises an upper output channel and a lower output channel. Wherein the first output channel is connected with the input port of the low-frequency filtering power divider, and the second output channel is connected with the input port of the high-frequency filtering power divider; the low-frequency filtering power divider and the high-frequency filtering power divider are stacked up and down and adopt double-layer metal gap waveguide structures; wherein a fourth-order resonant cavity is arranged in the double-layer metal gap waveguide structure so as to realize a duplex power division function; functions of a duplexer and a power divider are integrated, loss caused by machining and assembling errors is greatly reduced, and low insertion loss and high isolation between channels of the duplex power divider are achieved.

The invention discloses a high-power fast phase inversion switch based on a p-i-n diode, and relates to the technical field of high-power microwave p-i-n diode phase shifting. The inverter switch comprises a rectangular waveguide, 2N loading linear p-i-n diode phase shift circuits which are symmetrically and uniformly arranged on a narrow-side waveguide wall, and a bias power supply which provides bias voltage for the phase shift circuits. According to the invention, the loading line type p-i-n diode phase shift circuit is inserted into the waveguide structure, so that a microwave signal is transmitted along the waveguide transmission line instead of being transmitted along the metal microstrip line, the influence of the power loss of the p-i-n diode on the insertion loss of the phase shift circuit can be reduced, and the overall insertion loss is reduced; and meanwhile, phase inversion is realized by controlling the bias state of a p-i-n diode in the phase shift circuit, and nanosecond switching speed can be realized.

The invention discloses a high-power microwave amplitude limiting circuit which has a three-stage structure, a first-stage circuit and a second-stage circuit are respectively composed of three Schottky diodes at the upper part and three Schottky diodes at the lower part, and a third-stage circuit is respectively composed of three PIN diodes at the upper part and three PIN diodes at the lower part and is symmetrically distributed. Each stage of circuit is connected by a quarter-wavelength impedance transmission line, and two ends of the circuit are connected in series with a capacitor. After a radio-frequency signal is input from the first port, the Schottky diodes are rapidly conducted and generate direct current, the direct current can provide forward bias for the PIN diodes which are reversely connected in parallel after passing through the Schottky diodes of the first two stages, the bias current can rapidly reduce the forward conduction resistance of the PIN diodes, the PIN diodes are made to be in an approximate short-circuit state, and therefore the positive conduction resistance of the PIN diodes is reduced. The current is output from the third stage, and at the moment, the circuit can reflect most incident power so as to achieve the purpose of amplitude limiting. The invention overcomes the defects of difficult circuit structure adjustment, poor performance and the like, and has the advantages of low power consumption, large power capacity, small peak leakage energy, small response time and the like.

The invention discloses a K-band amplitude-limiting low-noise amplifier, and belongs to the technical field of radio frequency microelectronics. The circuit comprises an input matching module, a diode amplitude limiting module, an inter-stage matching module, a low-noise amplification module and an output matching module which are cascaded in sequence, the input matching module is used for realizing impedance matching between a radio frequency signal input end and the diode amplitude limiting module and transmitting a radio frequency signal; the diode amplitude limiting module is used for limiting the amplitude of the radio frequency signal and transmitting the radio frequency signal; the inter-stage matching module is used for realizing impedance matching between the diode amplitude limiting module and the low-noise amplification module; the low-noise amplification module is used for carrying out amplification processing on the radio frequency signal after amplitude limiting and transmitting the radio frequency signal; and the output matching module is used for realizing impedance matching between the low-noise amplification module and the radio frequency signal output end and outputting the amplified radio frequency signal. According to the invention, the amplitude of the input signal can be limited, so that the amplitude is kept in a bearable range of the low-noise amplification circuit, and the stability and reliability of the whole system are ensured.

The invention discloses a circularly polarized cavity-backed helical antenna based on a rectangular micro-coaxial process. The circularly polarized cavity-backed helical antenna mainly comprises two helical arms, a dielectric substrate printed with the two helical arms, a thin-film resistor on the dielectric substrate, two metal rings on the outer circle of the dielectric substrate, a metal sleeve, a feed rectangular coaxial line balun, a conical metal table, a wave-absorbing material and a radio frequency coaxial connector. The tail ends of the two spiral arms are connected with one ends of the two thin-film resistors respectively, the other ends of the two thin-film resistors are connected with the metal rings respectively, the dielectric substrate is placed above the metal sleeve, and the top and the bottom of the feed rectangular coaxial line balun are connected with the spiral arms and the radio frequency coaxial connector respectively. The feed rectangular coaxial line balun is embedded in the conical metal table, and the wave-absorbing material is placed above the conical metal table. The antenna provided by the invention adopts a metal back cavity structure, and has the characteristics of small overall structure size, high gain and low axial ratio in an ultra-wideband range.

The utility model discloses a filter. The filter comprises a resonator and a heat dissipation structure, the resonator comprises a substrate and a transducer stacking structure arranged on one side of the substrate, and a cavity is formed between the substrate and the transducer stacking structure; the heat dissipation structure comprises at least one first heat dissipation structure and at least one second heat dissipation structure; the first heat dissipation structure is arranged in the substrate, and the heat conductivity of the first heat dissipation structure is greater than that of the substrate; the second heat dissipation structure is in contact with the transducer stacking structure; the thermal conductivity of the second heat dissipation structure is greater than air thermal conductivity. According to the technical scheme of the utility model, the heat dissipation structures are arranged in the filter, and the first heat dissipation structure is arranged in the substrate, so that the problem of device damage caused by heat accumulation in the cavity is avoided; meanwhile, the second heat dissipation structure is arranged to be in contact with the transducer stacking structure, so that the heat dissipation efficiency of the transducer stacking structure is further improved, the heat dissipation efficiency of the filter is improved, and the purpose of improving the power capacity of the filter is achieved.

The invention relates to a microwave source device in the technical field of high-power microwaves, in particular to an L-band compact relativistic Cerenkov microwave generating device, and belongs to the technical field of high-power microwaves. Comprising a cathode structure, an external electromagnetic structure and an internal electromagnetic structure, and the cathode structure comprises a cathode seat and a cathode; the external electromagnetic structure comprises an anode outer cylinder, an outer cut-off neck, outer conductor ripples, a collector, a collector baffle and a solenoid coil; the internal electromagnetic structure comprises an inner cut-off neck, an inner conductor ripple, a short circuit block and a microwave output port; the whole structure is rotationally symmetrical about a central axis; through reasonable design of an electromagnetic structure, a coaxial non-uniform double-ripple slow-wave structure is adopted to enhance beam-wave coupling, a high-efficiency beam-wave effect is realized in a relatively short period, and a coaxial collector structure is adopted to improve the resonance characteristic of the slow-wave structure to reduce the axial size, so that miniaturization and compactness of the device are realized.

The invention provides an eight-channel power division coupling module based on an air plate line. The eight-channel power division coupling module has the functions of transmitting a transmitted / received signal, sampling the signal and distributing the signal. In order to meet the requirements of high-power and low-loss transmission between the T / R assembly and the antenna unit, an air plate line is used as a main line of the coupler; in order to meet the light and thin requirements of an antenna array surface, a microstrip line is adopted as a coupling line, and low-power signal sampling is realized. Weak coupling is achieved between the main line and the coupling line in an aperture coupling mode. The power division function is integrated at the same time, the one-to-eight microstrip power divider, the microstrip coupling line and the rectangular coupling aperture are compactly arranged on the same microwave double-sided board, and therefore the low-profile and low-cost design is achieved.

The embodiment of the invention provides a photoconductive switch link assembly, which comprises a photoconductive switch, a high-voltage conductor, a connector, a grounding conductor, a capacitor and a radio frequency connector, and is characterized in that the photoconductive switch, the high-voltage conductor, the connector, the grounding conductor, the capacitor and the radio frequency connector are coaxially connected; the high-voltage conductor, the grounding conductor, the capacitor and the radio frequency connector are stacked, the capacitor is located between the high-voltage conductor and the grounding conductor, and the grounding conductor is located between the capacitor and the radio frequency connector; an accommodating space is arranged in the capacitor, and the photoconductive switch is accommodated in the accommodating space; the input end of the photoconductive switch is connected with the high-voltage conductor, and the output end of the photoconductive switch is connected with the connector and is connected with the radio frequency connector through the connector; a containing cavity is formed in the side, facing the capacitor, of the grounding conductor, and the connecting body is located in the containing cavity. The whole structure of the link is high in integration level, compact in structure, small in external electromagnetic interference in the transmission process of current / voltage, and high in fidelity.

This utility model belongs to the field of filters, specifically a coaxial-to-waveguide filter, including a cavity with a waveguide port on the inner side. A coaxial connector is bolted to the top side of the waveguide port. Multiple resonant cavities are formed inside the cavity, and a coupling grounding post is installed inside the cavity through the resonant cavities. A coupling conductor is fixed between the waveguide port and one of the resonant cavities through a supporting insulating medium. One end of the coupling conductor is soldered to the coupling grounding post in the corresponding resonant cavity, and the other end extends into the waveguide port, realizing bidirectional coupling transmission of electromagnetic waves. This utility model introduces cross-coupling technology inside the filter, which significantly improves the out-of-band suppression compared to relying on natural attenuation, reduces the number of resonant cavities required to achieve the same suppression, thereby effectively reducing the product size and also reducing the filter insertion loss. This device achieves low port return loss through high out-of-band suppression.

This application discloses a three-dimensional ultra-wideband power divider, belonging to the field of radio frequency communication technology. It includes an input port, a strongly coupled line unit, a weakly coupled line unit, a first output port, and a second output port. The input port, strongly coupled line unit, and weakly coupled line unit are connected sequentially. The first terminal of the second end of the weakly coupled line unit is connected to the first output port, and the second terminal of the second end of the weakly coupled line unit is connected to the second output port. The weakly coupled line unit includes any number of coupling lines and multiple first resistors, with the multiple first resistors bridging between two coupling lines of the weakly coupled line unit. The strongly coupled line unit is a three-dimensional integrated vertical substrate circuit structure. This application overcomes the contradiction between ultra-wideband, high isolation, low loss, and mass production through a three-dimensional integrated structure, gradually changing coupling lines, and a multi-level bridging resistor network, providing a high-performance power divider solution for high-frequency communication systems.

The invention discloses an airborne high-suppression high-power filter and an installation method thereof, and relates to the field of communication. The radio frequency circuit comprises seven inductors which are connected in sequence, and every two adjacent inductors are grounded through a capacitor. The working frequency band is 500MHz, the in-band loss is less than 0.4 dB through circuit design, continuous wave 2000W high power can be borne, the size is small, the weight is light, out-of-band harmonic waves of a high-power transmitter can be filtered, and the electromagnetic compatibility of the system is improved. High suppression is realized by adopting a circuit form of a 13-section Chebyshev LC low-pass filter, and 760MHz out-of-band suppression can reach more than 70dB. Through structural process design and box body laser seal welding, the vibration and low-pressure environment of airborne use can be met. The antenna is suitable for improving the electromagnetic compatibility of an airborne broadband high-power transmitting system.

The utility model discloses a high-power waveguide sealing connection structure for an electron accelerator, which comprises a front straight waveguide, a rear straight waveguide, a flat flange, a double-groove type flange and a metal gasket, and the corresponding end faces of the front straight waveguide and the rear straight waveguide are respectively connected with the flat flange and the double-groove type flange. The flat flange and the double-groove type flange are connected with each other through respective sealing end surfaces; an annular stepped groove is formed in the sealing end face of the double-groove type flange, surrounding edges are arranged inside and outside the stepped groove, the stepped groove comprises a positioning groove and an auxiliary groove, the metal gasket is provided with a protruding annular positioning frame, the metal gasket is arranged between the flat flange and the double-groove type flange in a cushioned mode, and the positioning frame is connected with the positioning groove in a matched mode. According to the utility model, the sealing problem of high-power waveguide installation is solved, good electric contact of the butt joint plane of the two waveguide metal flanges during high-power microwave transmission operation is realized, high-power microwaves are prevented from escaping, vacuum in the waveguide is ensured, and stable transmission of the high-power microwaves is ensured.

This application relates to semiconductor technology and discloses a power semiconductor module and its driving circuit and electronic device. The power semiconductor module includes at least two groups of power semiconductor devices, a substrate, and multiple control signal pins. Each power semiconductor device group includes two power semiconductor devices forming a bridge arm structure, with each group connected in parallel. Each power semiconductor device is mounted on the substrate. The control terminal of each power semiconductor device is connected to a corresponding control signal pin. By using parallel power semiconductor device groups for current shunting, the system's power capacity and heat dissipation efficiency are greatly improved. Furthermore, connecting the control terminals of each power semiconductor device to separate control signal pins allows for individual control of each device, ensuring current balance among the parallel power semiconductor device groups and significantly improving the module's reliability.

The utility model relates to a radio frequency module. The radio frequency module provided by the embodiment of the utility model comprises a radio frequency switch circuit, two paths of uplink paths and two paths of downlink paths, the radio frequency switch circuit is configured to select one path from the two paths of uplink paths and the two paths of downlink paths for conduction so as to send signals through the uplink paths or receive signals through the downlink paths; the radio frequency switch circuit comprises a switch stack series-parallel structure; under the condition that the switch stack series-parallel structure comprises the switch stacks connected in series, the order number of the switch stacks connected in series is larger than the order number of other switch stacks. According to the embodiment of the invention, the isolation and linearity of the radio frequency module can be remarkably improved, and the insertion loss is reduced while the power capacity is improved.

The application belongs to the technical field of electromagnetic wave regulation and anti-interference, and specifically provides a dual-polarized broadband angle selective surface structure for same-frequency anti-interference, to solve the key technical problems of insufficient angle selectivity, limited working bandwidth and poor polarization adaptability of the existing angle selective structure in engineering application. The application proposes a structure design of multilayer metal plus polystyrene foam based on Jerusalem cross slots, realizes TE and TM dual-polarized working modes through innovative unit design and interlayer coupling mechanism; the multilayer metal arrangement realizes excellent angle selectivity and more than 6% working bandwidth while keeping a low profile, can keep low-loss transmission of incident waves at small-angle incidence, and keep stable angle selectivity and interference suppression performance at large-angle incidence; and the application has the significant advantages of good angle selectivity, wide working bandwidth, strong polarization adaptability, high structural stability and the like.

The utility model provides a power divider and signal transmission equipment, and the power divider comprises a first transmission line and a second transmission line, and the first transmission line and the second transmission line correspond to the same signal input end and correspond to different signal output ends. The first transmission line and the second transmission line are preset signal transmission lines; the preset signal transmission line is a signal transmission line prepared and formed based on a preset superconducting component; the transmission arms of the first transmission line and the second transmission line are respectively provided with a plurality of heating tuning structures. And the plurality of heating tuning structures are used for starting or stopping heating based on the driving instruction, so that certain temperature distribution is formed on the transmission line, and the corresponding working state of the power divider is correspondingly adjusted. Through the power divider provided by the invention, the loss during signal transmission can be reduced, and the power divider is particularly suitable for the field needing high-power and low-noise microwave signal transmission.

The invention discloses an ultrahigh-power Cherenkov radiation generator which solves the problems that an existing relativistic backward wave tube for generating frequency modulation waveforms is low in output power, low in conversion efficiency and narrow in frequency modulation range. The coaxial reflector, the non-uniform slow wave structure, the uniform slow wave structure, the coaxial coupling structure and the magnetic field coil are sequentially and coaxially connected to the rear side of the annular cathode; the non-uniform slow-wave structure and the uniform slow-wave structure are both over-mode structures, compared with a single-mode structure, the power capacity of the device is improved, meanwhile, the device can work at a high working voltage, and generation of ultra-high power is facilitated.

This invention discloses a method for a four-channel atmospheric pressure plasma jet array based on a cascaded power divider structure, belonging to the field of plasma jet technology. The method includes steps S1 (precision forming of the outer cavity), S2 (segmented machining of the inner conductor), S3 (annular ceramic preparation), S4 (LC parameter simulation pre-design), S5 (graded alignment assembly), and S6 (segmented debugging of the entire machine). This method for a four-channel atmospheric pressure plasma jet array based on a cascaded power divider structure produces products that can be widely used in large-area continuous industrial applications such as low-temperature sterilization of medical devices and surface activation of polymer sheets. It improves the yield rate by over 30%, reduces the ceramic scrap rate from the traditional 25% to less than 3%, has strong process reproducibility, eliminates the risk of localized heat accumulation and breakdown, and increases the continuous rated power of the equipment from the traditional 1.2kW to 3-5kW, meeting the needs of high-power continuous industrial production lines. It possesses outstanding innovation and industrialization value.

The present application relates to the technical field of bulk acoustic wave resonators, and specifically provides a bulk acoustic wave resonator with high power capacity and a preparation method thereof. The resonator comprises: a substrate, a bottom electrode, a piezoelectric layer, a top electrode and a functional layer connected in sequence from bottom to top; the functional layer comprises a first titanium-tungsten alloy layer; the outer boundary of the projection of the first titanium-tungsten alloy layer in the top-view direction is located within the outer boundary of the projection of the top electrode in the top-view direction, and the distance between the outer boundary of the projection of the first titanium-tungsten alloy layer in the top-view direction and the outer boundary of the projection of the top electrode in the top-view direction is greater than 0; the resonator can effectively solve the problem that the operating frequency and power capacity of the bulk acoustic wave resonator cannot be simultaneously improved because the operating frequency of the bulk acoustic wave resonator is negatively correlated with the electrode thickness and electrode area of ​​the bulk acoustic wave resonator, and the power capacity of the bulk acoustic wave resonator is positively correlated with the electrode thickness and electrode area of ​​the bulk acoustic wave resonator.

This invention relates to the field of passive radio frequency microwave devices, specifically to a filter-type Wilkinson chip power divider and its fabrication method. The divider includes an aluminum nitride substrate, an adhesion layer, a metal ground plane, a buried dielectric layer, three-dimensional interdigitated tantalum nitride resistors, a filter power divider metal structure, and a passivation layer. The adhesion layer is disposed on the surface of the aluminum nitride substrate, the metal ground plane is disposed on the surface of the metal adhesion layer, the buried dielectric layer covers the surface of the metal ground plane, and the buried dielectric layer has resistor trenches and interconnecting vias etched inside. The three-dimensional interdigitated tantalum nitride resistors are disposed within the resistor trenches and electrically connected to the metal ground plane through the interconnecting vias. The filter power divider metal structure is disposed on the surface of the buried dielectric layer, and the passivation layer is deposited on the surface of the filter power divider metal structure. This invention achieves integrated power distribution, passband filtering, port isolation, and harmonic suppression functions through a single-chip structure. Compared to traditional modular solutions, it significantly reduces the device size and can meet the miniaturization and high integration requirements of radio frequency front-ends.

The circularly polarized cavity-backed spiral antenna based on the rectangular micro-coaxial process of the present invention mainly includes two spiral arms, a dielectric substrate printed with two spiral arms, a thin film resistor on the dielectric substrate, two metal rings on the outer circle of the dielectric substrate, a metal sleeve, a feed rectangular coaxial line balun, a conical metal stage, an absorbing material, and a radio frequency coaxial connector. The ends of the two spiral arms are respectively connected to one end of the two thin film resistors, and the other ends of the two thin film resistors are respectively connected to the metal rings. The dielectric substrate is placed above the metal sleeve, and the top and bottom of the feed rectangular coaxial line balun are respectively connected to the spiral arms and the radio frequency coaxial connector. The feed rectangular coaxial line balun is embedded in the conical metal stage, and the absorbing material is placed above the conical metal stage. The antenna of the present invention adopts a metal cavity-backed structure, which realizes the characteristics of small overall structure size, high gain, and low axial ratio within the ultra-wideband range.

The present invention belongs to the technical field of resistor components, and specifically relates to a modular water-cooled resistor, including an aluminum heat dissipation shell, two lead interfaces are provided on one side of the aluminum heat dissipation shell, a lead-out piece with a step structure is screwed into the lead interface, a water inlet interface and a water outlet interface are provided on the other side of the aluminum heat dissipation shell, a mica board is provided in the aluminum heat dissipation shell, an insulating support seat is provided above the mica board, a resistor plate is laid on the top of the insulating support seat, an aluminum cover plate is provided above the resistor plate, and lead-out bolts are connected to the lead-out piece with both ends respectively, and the lead-out bolts are screwed and fixed. Compared with the prior art, the present invention has the following advantages: the water-cooled resistor achieves high power capacity in a limited space, ensures the use of water cooling effect in a limited space, is quick to assemble and use, has a small overall size of the resistor, and greatly increases the scope of application.

This application relates to the technical field of electronic filtering, and in particular to a miniaturized ceramic dielectric filter capable of handling high power. The filter includes a ceramic cover plate, a cavity, an insulating kit, an inner conductor sheet, and a connector. The ceramic cover plate is silver-plated and sealed to the top of the cavity. Each side of the cavity has an interface penetrating the side wall. Two insulating kits are located inside the cavity, each corresponding to one of the interfaces. The inner conductor sheet is housed within the insulating kit. The connector passes through the interface, and its end connects to the inner conductor sheet. This application improves transmission efficiency, reduces losses, lowers heat dissipation, and extends product lifespan. The insulating dielectric completely encapsulates the inner conductor, effectively increasing the filter's power output. Compared to conventional ceramic dielectric filters ranging from a few watts to tens of watts, this filter can handle high-current, high-frequency signals, thus broadening its application scope.

This invention proposes a composite rod-type magneto-electro-mechanical antenna and its fabrication method, belonging to the field of mechanical antenna technology. It solves the problems of low power capacity, weak radiation capability, and short communication distance commonly found in existing magneto-electro-mechanical antennas. It comprises a magnetostrictive layer, two transition layers, two sets of driving layers, and two sets of tail mass blocks. The magnetostrictive layer is located at the center, with the transition layer, driving layer, and tail mass blocks arranged sequentially from the center to both ends on either side. Each driving layer is composed of multiple piezoelectric ceramic rings and multiple electrode sheets stacked alternately. Each tail mass block consists of mass block one, a disc spring, and mass block two connected sequentially. The length of this composite rod-type magneto-electro-mechanical antenna is comparable to that of a traditional three-layer magneto-electro-electric antenna. When the antenna adopts the first-order longitudinal mode, it can operate in the very low frequency band. Depending on different application requirements, the composite rod-type magneto-electro-mechanical antenna of this invention can adopt the second-order longitudinal mode or operate in other frequency bands.

The embodiment of the utility model provides a cavity filter. The cavity filter comprises a cavity with an opening in the upper end; the resonance rod is provided with a resonance rod deep hole which is downward from the top end, and the resonance rod is fixed on the inner bottom of the cavity; the outer wall of the discharge isolation cylinder is fixed to the top of the inner wall of the resonance rod deep hole, and the discharge isolation cylinder is connected with the resonance rod deep hole in a sleeving mode; the cover plate is fixedly mounted at the opening of the cavity, and the cover plate is provided with a cover plate threaded hole penetrating from top to bottom; and the tuning screw rod is in threaded connection with the cover plate threaded hole, and the bottom end of the tuning screw rod enters the resonance rod deep hole. According to the embodiment of the invention, the technical problem that a conventional cavity filter is insufficient in power capacity under a low-pressure condition in a high-altitude or high-altitude environment is solved.

The utility model relates to a radio frequency switch and a radio frequency switch module. The radio frequency switch provided by the embodiment of the utility model comprises a switch stack module coupled between a first signal transmission port and a second signal transmission port; the switch stack module comprises a series module and a parallel module; the series module is connected between the first signal transmission port and the second signal transmission port; the parallel module is connected between the second signal transmission port and the ground end; one of the series connection module and the parallel connection module is disconnected during the conduction period of the other. According to the embodiment of the invention, the linearity and the power capacity of the radio frequency switch are improved.

This application relates to a transmitter end, a receiver end, a dynamic wireless power supply system, and an electric vehicle, and relates to the field of wireless power supply technologies. In this technical solution, the transmitter end includes a transmitter coil. The transmitter end further includes a transmitter end control system and N energy management modules, where N is an integer greater than 1. Input ends of the N energy management modules are electrically connected to a power grid, and output ends of the N energy management modules are electrically connected to the transmitter coil. Each energy management module includes an AC-DC circuit, an inverter circuit, and a transformer. The transmitter end control system is electrically connected to the inverter circuits in the N energy management modules, and is configured to output synchronous phase shift control signals with a fixed duty cycle, to drive the inverter circuits to work synchronously. The energy management module may be used in the transmitter end, and form a smallest module. A quantity of energy management modules can be increased or decreased based on different power requirement levels, to quickly and flexibly increase a power capacity of a dynamic wireless power supply system and improve a system response speed.

An adhesive film for a metal terminal, which is to be interposed between a metal terminal electrically connected to an electrode of a power storage device element and a power storage device packaging material for sealing the power storage device element, wherein the adhesive film for a metal terminal comprises a laminate sequentially including a first polyolefin layer disposed on the metal terminal side, a base material, and a second polyolefin layer disposed on the power storage device packaging material side, the laminate has a first adhesive layer between the first polyolefin layer and the base material, has a second adhesive layer between the second polyolefin layer and the base material, or has both the first adhesive layer and the second adhesive layer, the base material has a melting peak temperature of 135°C or more, and at least one of the first adhesive layer and the second adhesive layer has a melting peak temperature of 100°C or less.