38results about How to "Low insertion loss" patented technology

This invention discloses a wideband, high-isolation single-pole five-throw switch chip, comprising six ports, two power ports, five control ports, twenty microstrip lines, one capacitor C1, twenty-five switching transistors, twenty-five gate resistors, and five voltage control modules. The six ports are port 1, port 2, port 3, port 4, port 5, and port 6; port 1 is the RF input port; ports 2, 3, 4, 5, and 6 are output ports. The RF input and output ports are connected via the two power ports, five control ports, twenty microstrip lines, one capacitor C1, twenty-five switching transistors, twenty-five gate resistors, and five voltage control modules. Compared to existing single-pole five-throw switches, this invention is integrated on a single chip, offering the advantage of small size. The use of voltage control modules significantly reduces the number of power supply modules, facilitating application.

The application relates to a processor system. The processor system comprises a substrate, a processor arranged on the substrate, at least one first connector arranged on the substrate, each first connector being connected to the processor through a wire, at least one function expansion card, the function expansion card being provided with a second connector and a function device, the function device being connected to the second connector through a wire, and the second connector being connected to the first connector through a cable. The method can relieve the problem of crowded space of a mainboard.

The invention discloses a 3D waveguide type multi-core optical fiber link monitor which comprises an optical chip platform with n layers of stacked waveguide structures and a photoelectric detector, n is larger than or equal to 2, and the number n of waveguide layers of the optical chip platform is equal to the number of layers of connected multi-core optical fibers. The cross section distribution of waveguides in the optical chip platform and the cross section distribution of fiber cores of the multi-core optical fiber are the same and are in one-to-one correspondence; a waveguide channel corresponding to each fiber core of the multi-core optical fiber in the optical chip platform comprises an optical fiber signal coupling fan-out module, an optical signal beam splitting module, an optical signal monitoring module and a multi-core optical fiber signal coupling fan-in module which are connected in sequence; after an optical signal of a multi-core optical fiber transmitting end is coupled by the fan-out module, a small part of the signal is separated by the beam splitting module through a waveguide coupling effect and is used for monitoring, and most of the signal is transmitted back to a transmission link through the fan-in module; and the monitoring module realizes real-time detection through a photoelectric detector. According to the invention, no extra optical fiber fan-in / fan-out module is needed, the insertion loss is low, and the device is not sensitive to polarization.

The present invention discloses a low dielectric constant multifunctional electronic moisture-proof coating composition, and relates to the technical field of electronic materials and protective coatings, the composition comprises: a component A: 15-35% of a reaction type fluorine-silicon hybrid oligomer; the component B comprises 2%-8% of surface modified nanosheet barrier filler; the component C comprises 50%-75% of a green cosolvent system; the component D comprises 0.5%-3% of a multifunctional epoxy silane coupling agent; and the component E comprises 1%-5% of a photo-thermal dual-curing initiation system. The problems that in the prior art, the VOC emission of a fluorine-containing solvent is high, the compactness is insufficient due to filler sedimentation, and the water vapor permeability is high in a high-damp-heat environment are solved, through the quaternary synergistic effect, the low dielectric constant, high hydrophobicity, excellent moisture resistance and high adhesive force to various base materials are achieved, and the water-based paint is suitable for protection of high-frequency electronic devices.

The application provides a radio frequency switch circuit and a radio frequency chip, and the radio frequency switch circuit comprises a switch module, a gate voltage control module and a body voltage control module, wherein the switch module comprises a radio frequency switch transistor, the source of the radio frequency switch transistor and the drain of the radio frequency switch transistor are connected to each other to form a signal channel; the gate voltage control module is used for connecting the gate of the radio frequency switch transistor and providing an operating voltage for the radio frequency switch transistor; the body voltage control module is connected to the body of the radio frequency switch transistor and the gate of the radio frequency switch transistor respectively, and is used for dynamically adjusting the potential of the body of the radio frequency switch transistor according to the size of the operating voltage received by the gate of the radio frequency switch transistor. The application can effectively control the on-resistance and off-capacitance of the radio frequency switch circuit, thereby effectively improving the performance of the radio frequency switch.

The present application relates to the technical field of millimeter wave communication, and particularly relates to a V / W wave band low-loss metal waveguide and a preparation method thereof. The preparation method provided by the present application combines metal additive manufacturing, inner wall conductive metal deposition, super-smooth inner surface polishing and external single-point diamond turning technology. The waveguide manufactured by the composite process chain comprises an aluminum-magnesium (zirconium) alloy waveguide structure manufactured by laser beam melting additive manufacturing, a copper (silver) inner wall coating deposited by chemical reduction plating technology, an inner wall surface with a roughness of less than 50 nm Ra processed by abrasive flow machining, and a self-aligning flange with a flatness of less than 0.1 microns and a butt joint surface roughness of less than 20 nm Ra processed by super-precision machining. The present application improves the electrical performance, thermal interface consistency and assembly accuracy. The preparation method of the present application solves the problems of high insertion loss of the existing waveguide structure in high-frequency applications, high-cost mode coupling caused by large structural assembly errors, uncontrollable inner wall roughness and the like.

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 a multipath amplitude phase adjusting device, which comprises supports, PCBs, coupling scribing pieces and clamping devices, and is characterized in that the number of the supports is two, the PCBs are arranged on the wall surfaces of the two supports, and the wall surface of each PCB is provided with a plurality of branch slow-wave microstrip lines which are distributed at intervals; the plurality of branch slow-wave microstrip lines are concentrically arranged around a first shaft, the coupling slip sheet is arranged on the upper wall of the PCB, the coupling slip sheet is provided with a power amplifier network line matched with the microstrip lines, one end of the coupling slip sheet is pivotally mounted on the PCB through the first shaft of the clamping device, and the clamping device is used for driving the coupling slip sheet to swing around the first shaft as the axis. The position of the coupling slip sheet on the branch slow-wave microstrip line is adjusted; and the first shaft is provided with an input line matched with the power amplifier network line. Under the requirement of the same phase adjustment quantity, the branch slow-wave microstrip line and the coupling slip sheet are coaxially arranged. The arc track length required by using the slow-wave microstrip line is shorter than that required by using a common microstrip line or a cable.

The application relates to the technical field of radio frequency microwave devices, in particular to a W-waveband wide-frequency RF MEMS multi-blade multi-pole switch which comprises a silicon substrate, a plurality of input / output ports and a MEMS cantilever beam switch unit, the MEMS cantilever beam switch unit is provided with a driving electrode, and the communication and disconnection of the radio frequency signal path between the corresponding input port and the output port can be controlled by applying voltage to the driving electrode. The application realizes the on-off of the radio frequency signal path by electrostatic driving control of the deformation of the cantilever beam, and the driving mode has the advantages of low power consumption, high speed and easy integration. Compared with the common single-blade structure, the application can realize more complex signal routing in a compact unit, improves the system integration and functional flexibility, realizes interference-free crossing by using the slot structure through the horizontal swing type structure and the vertical lifting type structure, significantly reduces the high-frequency parasitic effect, and ensures the transmission quality of the millimeter wave signal in the W waveband.

The utility model relates to the technical field of mass spectrometer electronic components, and provides an ion source electrode lead connecting terminal, which comprises a binding post, a blind hole arranged in the binding post, and a conductor embedded in the blind hole, and the conductor comprises a plurality of conducting strips uniformly arranged at intervals and positioning rings arranged at two ends of the conducting strips. The middle ends of the conducting strips protrude towards the side away from the inner wall of the blind hole, multi-point contact pressure is provided when an electrode lead pin is inserted through the arranged conductors, stable and reliable electrical connection is ensured, meanwhile, the problems that in the prior art, a cross-shaped slotting structure is prone to denaturation, breakage and contact breakage are solved, fluctuation of contact resistance is reduced, and the service life of the electrode lead pin is prolonged. And the current transmission uniformity 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 application relates to a band-pass filter of an asymmetrically graded via array, belonging to the technical field of microwave radio frequency passive devices, comprising a SIW rectangular resonant cavity which comprises four resonant cavities, has coupling windows between adjacent resonant cavities, and has different arrangement modes of metalized vias in longitudinal metalized via arrays in different resonant cavities; different arrangement modes of metalized vias in longitudinal metalized via arrays in different coupling windows, the spacing between metalized vias in longitudinal metalized via arrays in the coupling windows is smaller than the minimum spacing between metalized vias in the resonant cavities, the longitudinal metalized via array of at least one coupling window is arranged in a trapezoidal gradient, and the setting positions or arrangement modes of the transverse metalized via arrays in different coupling windows are different; the band-pass filter can more simply and effectively solve the problems of strong stray mode, large insertion loss and narrow adjustable range of passband bandwidth of a traditional SIW band-pass filter.

This invention relates to the field of optoelectronic detection equipment, specifically an improved industrial optical fiber structure with adjustable transmission band and filtering function. To achieve the above objectives, the invention employs the following technical solution: it comprises an optical fiber head, a first optical fiber, a second optical fiber, a filtering component, and a third optical fiber; the first and second optical fibers are inserted into the optical fiber head from the left side to its left end face to form an optical path entrance; the second optical fiber continues to be inserted into the filtering component from the right; the third optical fiber is inserted into the filtering component from the right side and optically connected to the second optical fiber at the filter, completing the optical path transmission; by introducing a replaceable filter component into the optical fiber path, the optical fiber itself possesses filtering function, eliminating reliance on terminal equipment for band selection and significantly enhancing the flexibility of band selection; simultaneously, it achieves a glue-free, reusable connection method, improving maintenance efficiency and component reusability.

The invention relates to the technical field of signal generation, and discloses a signal generation system and method.In a frequency mixing and phase locking module, the first input end of a frequency mixing unit is connected with the output end of a dot frequency selection unit, the second input end of the frequency mixing unit is connected with the output end of a signal adjustment unit, and the output end of the frequency mixing unit is connected with the input end of a sideband selection unit; the first input end of the signal adjusting unit is connected with the output end of the sideband selection unit, and the second input end is connected with the output end of the frequency synthesis module; the input end of the dot frequency selection unit is connected with the output end of the dot frequency generation module; the input end of the frequency synthesis module is connected with the output end of the dot frequency generation module. Therefore, the frequency band coverage of a single dot frequency signal is expanded through a sideband switching mode, the number of required dot frequency signals is reduced, the number of required filters is reduced, the hardware complexity of a system is reduced, meanwhile, the frequency interval of the dot frequency signals can be expanded, the transition band requirement of the filters is reduced, and the signal-to-noise ratio of the system is improved.

This invention discloses a design method for dual-polarized ultrawideband energy-selective materials. The method includes: integrating diodes with surface plasmon polaritons (SSPPs) and etching them onto the surface of a dielectric waveguide to form a centrosymmetric structure; wherein the SSPPs are periodic metal strips etched onto the dielectric waveguide surface, each SSPP metal strip integrating two diodes, symmetrically integrated on both sides of the metal strip, with etched gaps at the diodes connecting the metal strips; when the diodes are off, the metal strip transmission between the two diodes is below the asymptotic frequency. f 1. Electromagnetic waves; when the diode is turned on, the metal strip connecting the two diodes increases in equivalent length, and the asymptotic frequency decreases to 1. f 2, make f 2~ f Electromagnetic waves in the 1-band exhibit energy selectivity. This invention integrates a diode and a surface plasmon polariton (SSPP) structure and etches them onto the surface of a dielectric waveguide to achieve dual polarization, ultra-wideband coverage, and low cost.

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 discloses a mode-division multiplexer (MDD) based on a five-core photonic crystal fiber. The MMDD includes a substrate and an air-hole layer region disposed on the substrate. The air-hole layer region is composed of a plurality of air holes arranged in a pattern, and is divided into a core region and a cladding region, with the cladding region enclosing the core region. The core includes a main core region, a first side core region, a second side core region, a third side core region, and a fourth side core region. The main core region is located at the center of the substrate, and the first, second, third, and fourth side core regions surround the main core region. The cladding region surrounds the main core region. This invention modulates the incident light in the side core regions into coupled light in the main core region, thereby increasing the operating bandwidth of the MMDD and reducing insertion loss, while effectively shortening the device length. This makes the MMDD suitable for miniaturized and integrated optical fiber communication systems and MMDD systems.

The application discloses a high-isolation radio frequency switch circuit based on parasitic parameter compensation and belongs to the technical field of radio frequency switch circuits. The circuit comprises an input end, a first output end, a second output end, two impedance conversion sections, two output transmission lines and two parallel branches. The input end is connected to one end of the two impedance conversion sections through a common node, and the other end of the impedance conversion section is connected to a T-shaped junction node. Each T-shaped junction node is connected to the first output end and the second output end through the output transmission line. One end of the parallel branch is connected to the T-shaped junction node. The parallel branch comprises a compensation stub and a PIN diode connected in series. The microstrip line structure at the T-shaped junction node is configured to introduce a parallel capacitor to form parallel resonance with the parallel branch in a conducting state.

The utility model provides a 12-18GHz switch assembly which comprises a plurality of switch units sealed in a metal shell, a switch element comprises two control ends and an output end, the output end is connected to the output end of the switch unit through a first capacitor, and two input ends are connected to the input end of a switch signal through a coupling unit; the first branch circuit is connected with a common node between the first capacitor and the output end, and outputs a first branch circuit signal to the output end when the switching element is in an off state; and the second branch circuit is connected with a common node between the first capacitor and the switch element, and outputs a second branch circuit signal to the output end when the switch element is in a conducting state. Therefore, accurate switching of 12-18GHz radio frequency transceiving channels is realized through matching of the capacitor connected to the switch element and the impedance original on the branch, effective ESD protection is provided, insertion loss is reduced, and the linearity of the switch unit is improved.

The application relates to a double-passband filter based on SISL, which comprises a five-layer dielectric substrate covered with metal layers on the top layer and the bottom layer, the five-layer dielectric substrate is sub1-sub5 from top to bottom, the metal layers on the top layer and the bottom layer of the five-layer dielectric substrate are G1-G10 from top to bottom, square metallized via arrays 1 are arranged in the middle regions of the five-layer dielectric substrate, the square metallized via arrays 1 on the five-layer dielectric substrate correspond to each other, an integrated DGS1 is arranged on the dielectric substrate sub1, a microwave circuit is arranged on the dielectric substrate sub3, an integrated DGS2 is arranged on the dielectric substrate sub5, air cavities are arranged on the dielectric substrate sub2 and the dielectric substrate sub4, the air cavity on the dielectric substrate sub2 and the air cavity on the dielectric substrate sub4 correspond to each other, the application realizes a double-passband filtering effect and improves the selectivity of the double-passband.

The utility model discloses a kind of high-selectivity low-loss porcelain medium microcavity band-pass filter, it is related to filter technical field, comprising: upper and lower two layers of mirror image symmetry distribution filter unit, two layers The filter unit includes the first metal layer, intermediate substrate and second metal layer sequentially arranged from outside to inside;The second metal layer is with resonance unit;The gap region between the circumferential metal region and resonance unit directly opposite the second metal layer, the intermediate substrate is opened with the channel that passes through itself, air can be entered in the channel.The intermediate substrate uses high-dielectric ceramic substrate.This scheme is adopted, by slotting, to replace air with medium on the magnetic field propagation path, so as to reduce the medium loss of filter, reach the purpose of insertion loss reduction.

The invention provides an ultra-small electromechanical coupling coefficient resonator, an implementation method and an ultra-narrow band filter, and the method comprises the steps: applying a preset pulse voltage to an electrode of a bulk acoustic wave resonator of which a piezoelectric layer comprises a ferroelectric layer, so as to achieve the overturning of a local polarization direction of a preset region of the ferroelectric layer of the bulk acoustic wave resonator, therefore, the bulk acoustic wave resonator with the ultra-small overall electromechanical coupling coefficient is obtained. The first pulse voltage is applied to the resonator based on the ferroelectric material, the polarization direction of the ferroelectric layer is locally turned, the bulk acoustic wave resonator with the ultra-small electromechanical coupling coefficient is obtained, and the application requirement of an ultra-high-frequency ultra-narrow-band filter is met; besides, a second piezoelectric layer can be arranged between the first electrode and the second electrode, so that the piezoelectric coefficient of the ferroelectric layer can be partially offset, the electromechanical coupling coefficient of the resonator is greatly reduced, and the filter with the ultra-narrow bandwidth is realized. And finally, the filter with narrower bandwidth is realized by selecting the material and the thickness of the electrode.

The utility model discloses a 577nm trapped wave negative optical filter, which comprises a transparent substrate and a filter film, the filter film is plated on the upper surface of the transparent substrate, the filter film comprises a plurality of high refractive index film layers with different thicknesses and a plurality of low refractive index film layers with different thicknesses, and the total number of the layers is 242. The average transmittance of the 577 nm notch negative optical filter to light with the wavelength ranging from 400 nm to 900 nm is 95%, the half width of a cut-off band is 23 nm, and the cut-off depth of the 577 nm notch negative optical filter to light with the wavelength of 577 nm is 4.739. And after light enters the 577nm notch negative optical filter from air, only the light with the wavelength range of 400-900nm is emitted, and the light with the wavelength of 577nm is filtered out.

The application discloses a TM mode polarizer based on a cascaded antisymmetric multimode Bragg grating structure, which comprises an input waveguide group, a first grating, a connecting waveguide group, a second grating and an output waveguide group which are sequentially connected along a transmission direction, a plurality of columns of period units are arranged in the first grating and the second grating respectively, a displacement difference is arranged between two adjacent columns of period units in a horizontal direction, and the periods of the first grating and the second grating are not equal. The application has the advantages of compact structure, large working bandwidth, low insertion loss in an effective working bandwidth and high extinction ratio. Two antisymmetric multimode Bragg gratings with different periods are cascaded to convert input TE0 mode signal light into reversely transmitted TE1 mode, the reversely transmitted TE1 mode is leaked into a cladding through a tapered waveguide, input TM0 mode signal light is directly transmitted through the waveguide without being affected, and finally, low-insertion-loss, high-extinction-ratio and large-bandwidth TM0 mode light signals are obtained at an output end of a single-mode output waveguide.

The present application relates to the technical field of resonator, and discloses a surface acoustic wave resonator and a surface acoustic wave filter, which comprise a piezoelectric layer, and an interdigital transducer and a reflective grating structure arranged on the piezoelectric layer and arranged along a first direction, the reflective grating structure being located at the side of the interdigital transducer; the reflective grating structure comprises a plurality of unit reflective gratings arranged along the first direction, and the finger strips of each unit reflective grating extend along a second direction; the structure of each unit reflective grating is an interdigital reflective grating, a short-circuit reflective grating or an open-circuit reflective grating; in the reflective grating structure, at least one unit reflective grating is an interdigital reflective grating, and the unit reflective gratings other than the interdigital reflective grating are one or both of a short-circuit reflective grating or an open-circuit reflective grating. The present application can weaken the influence of the longitudinal wave of the surface acoustic wave resonator on the filter passband, reduce the insertion loss, improve the flatness of the filter passband, and realize a surface acoustic wave device with high stability and low loss.

This invention discloses an all-fiber integrated electro-optic crystal electric field probe and demodulation device. The electro-optic crystal electric field probe includes: a polarization-maintaining fiber, a first glass sleeve, a second glass sleeve, a collimating lens, a quarter-wave plate, an electro-optic crystal, and a reflective film. The polarization-maintaining fiber is fixedly connected to the first glass sleeve, the first glass sleeve is fixedly connected to the second glass sleeve, the polarization-maintaining fiber is connected to the collimating lens, the collimating lens is connected to the quarter-wave plate, the quarter-wave plate is connected to the electro-optic crystal, and the electro-optic crystal is connected to the reflective film. The collimating lens and the quarter-wave plate are disposed inside the second glass sleeve. This invention solves the problems of unstable electric field measurement caused by the difficulty in integrating space optical elements, susceptibility to vibration, large size, and difficulty in coupling, and improves the sensitivity and stability of the measurement device.

The application provides an anti-metal clutter dual-port microsound identifier, comprising a microsound chip and a dual-polarized antenna; the dual-polarized antenna is connected to the microsound chip; a microsound chip receiving end and a microsound chip transmitting end are arranged on the microsound chip; the microsound chip comprises a plurality of one-way single-phase transducers; the one-way single-phase transducers comprise input end one-way single-phase transducers and output end one-way single-phase transducers; the input end one-way single-phase transducers are connected to the microsound chip receiving end; and the output end one-way single-phase transducers are connected to the microsound chip transmitting end. Through the input and output ports of the microsound chip and the dual-polarized antenna, polarization isolation of input and output is realized, and external noise is well suppressed, so that metal clutter such as multipath fading and far target clutter interference in an industrial environment can be effectively suppressed.

This invention discloses a broadband absorption structure with independently adjustable polarization frequency, belonging to the field of frequency-selective absorber technology. The structure comprises six alternating layers of ideal conductor PEC frequency-selective surfaces and three layers of F4B dielectric substrate. The frequency-selective surfaces are divided into lossy and lossless arrays. Both types of arrays consist of two orthogonal sublayers arranged in the same manner. All sublayers are printed on the dielectric substrate and isolated from each other by air layers. Both the lossy and lossless arrays integrate varactor diodes for independently controlling the transmission windows of TE-polarized and TM-polarized incident waves. This invention achieves true independent polarization frequency modulation, overcoming the shortcomings of traditional structures that cannot achieve independent polarization characteristics. It allows independent adjustment of the transmission frequencies of TE and TM polarizations without affecting the transmission and control response of cross-polarized waves.

The application provides a multi-path plug-and-play radio frequency module amplitude-phase extraction device, which comprises an upper cover plate, an amplitude-phase extraction network, a matching load, amplitude-phase information input and output ports, a lower cover plate and a floating elastic connector; the amplitude-phase extraction network is arranged between the upper cover plate and the lower cover plate; the upper cover plate and the lower cover plate are both provided with 4 rows of 16 columns of a total of 64 floating elastic connectors; the inner conductor of the floating elastic connector is a hair button, which is directly and vertically connected to the amplitude-phase extraction network pad after elastic compression without welding; and the outer conductor is radially floating through a spring. The application can directly extract the amplitude-phase information of the whole-link channel by blind insertion into the system link, and can also extract the amplitude-phase information of an independent radio frequency module.

The application discloses a K-band broadband rectangular waveguide to stripline transition structure, and relates to the field of microwave and millimeter wave integration. The structure comprises a rectangular waveguide, a substrate integrated waveguide and a stripline structure, the last two of which share a dielectric substrate, upper and lower layer metals and a metalized via array. The upper layer metal is provided with first and second coupling windows; the rectangular waveguide is vertically arranged on the upper layer metal and is connected to the first coupling window; the stripline metal extends to the second coupling window and is connected to the substrate integrated waveguide. The metalized via array comprises C-shaped and symmetrically distributed vias. The application realizes low-loss and broadband mode conversion between the waveguide and the stripline based on the substrate integrated waveguide right-angle transition, the specific via arrangement and the matching adjustment network, the working frequency band is 19.7-26.3 GHz, the return loss is less than-20 dB, and the system integration is improved.