133 results about "Electrical probe" patented technology

The utility model relates to a missile-borne low-profile, miniaturized and low-frequency-division-ratio dual-frequency antenna, and belongs to the technical field of communication. The dual-frequency antenna comprises a metal bottom plate, an antenna housing fixed with the metal bottom plate, and a dielectric substrate fixed between the metal bottom plate and the antenna housing. Wherein the dielectric substrate comprises an upper-layer dielectric substrate and a lower-layer dielectric substrate which are bonded with each other; metal patches are loaded on the surfaces of the upper-layer dielectric substrate and the lower-layer dielectric substrate; the upper-layer dielectric substrate and the lower-layer dielectric substrate are electrically connected through a metal column located on the central axis of the dielectric substrate, and the lower-layer dielectric substrate and the metal bottom plate are electrically connected through a feed probe located on the central axis; and the metal patches on the surfaces of the upper-layer dielectric substrate and the lower-layer dielectric substrate are horizontally symmetrical along the central axis. According to the utility model, the dual-frequency antenna with low profile, small size and low frequency division ratio is realized, the frequency division ratio is low under the condition that the basic radiation efficiency is guaranteed, and two narrowband working frequency bands can be provided in the s wave band.

The invention discloses a double-frequency circularly polarized antenna element, which belongs to the technical field of antennas and comprises a high-frequency-band radiation unit and a low-frequency-band radiation unit. The high-frequency band radiation unit comprises a first dielectric substrate and a first feed probe. A first radiation patch is embedded in one end face of the first dielectric substrate, and the first radiation patch is provided with two symmetrical chamfers. The top end of the first feed probe passes through the first through hole and is fixedly connected with the first radiation patch. The low-frequency-band radiation unit comprises a second dielectric substrate, a second radiation patch and a third dielectric substrate. The second radiation patch is arranged on the second dielectric substrate. The second dielectric substrate is provided with a second metalized through hole. The third dielectric substrate is provided with a Chebyshev Balun feed printed line. The antenna element provided by the invention not only can realize the circular polarization of the antenna, but also can reduce the coupling between antennas of different working frequency bands while expanding the bandwidth of the antenna, improve the isolation between two working frequency band ports, and reduce the cross polarization.

The invention relates to an anti-interference high-selectivity omnidirectional planar filtering antenna, a filtering processing method and application, and the planar filtering antenna comprises a metal radiation layer, a first dielectric substrate, a first coupling layer, a second dielectric substrate and a second coupling layer which are sequentially stacked. The second dielectric substrate is provided with a plurality of metalized through holes which are distributed in an annular array mode and define a substrate integrated cavity with the first coupling layer and the second coupling layer, the metalized through holes divide the second coupling layer into an inner side patch and an outer side ring piece, and the inner side patch is evenly provided with a plurality of resonance grooves; and a feed probe penetrating and extending to the second dielectric substrate is arranged at the center of the bottom of the metal radiation layer. According to the invention, the substrate integrated waveguide technology is adopted, the substrate integrated cavity is formed, and a high-selectivity filtering effect is realized by utilizing the characteristic of high Q value, so that the interference of out-of-band signals is effectively inhibited, and the advantages of the patch antenna and the substrate integrated cavity are effectively combined.

The invention discloses a Ka-band broadband characteristic magnetoelectric dipole antenna, and belongs to the technical field of millimeter wave radio frequency front-end devices. The antenna comprises an upper-layer dielectric substrate, a semi-cured layer, a lower-layer dielectric substrate and a metal ground backboard which are stacked from top to bottom. The surface of the upper dielectric substrate is provided with four special hexagonal radiation patches, a central rectangular feed patch and four rectangular parasitic patches. A cross-shaped gap is defined by the four radiation patches, and the center feed patch and the specific metal through hole and the metal blind hole in the lower layer jointly form an inverted L-shaped feed probe. And each radiation patch and each parasitic patch are respectively connected to the metal ground backboard through metal through holes. The antenna has the advantages of wide bandwidth, stable performance and compact structure.

The invention discloses a dual-band dual-linear polarization reconfigurable folding transmission-reflection array antenna, which comprises an upper-layer metasurface, a lower-layer metasurface and a feed source antenna, the upper-layer metasurface is provided with 12 * 12 first unit structures, and each first unit structure comprises a first metasurface metal patch, a first dielectric substrate, a second metasurface metal patch, a second dielectric substrate and a third metasurface metal patch which are connected from top to bottom; the lower-layer metasurface is provided with 12 * 12 second unit structures, and each second unit structure comprises an annular gap metal patch, a third dielectric substrate and a bottom-layer feeder line which are connected from top to bottom; two PIN diodes are integrated in an annular gap of the annular gap metal patch, and the annular gap metal patch is connected with a bottom feeder line located on the upper surface of the third dielectric substrate through a feed probe; and a 2 * 2 unit size is reserved in the center of the lower-layer metasurface and is used for placing a feed source antenna. According to the invention, dual-frequency dual-linear polarization bidirectional wave beam scanning is realized, and the low-profile characteristic is realized.

The invention discloses a dual-port coaxial feed circular polarization magnetoelectric dipole antenna, and belongs to the technical field of millimeter wave satellite communication antennas. The antenna comprises a first metal patch layer, a dielectric substrate a, a second metal patch layer, a dielectric substrate b and a metal ground which are sequentially stacked from top to bottom, the second metal patch layer comprises four radiation patches which are arranged in a rectangular array, and each radiation patch is composed of a square patch and a circular ring patch at an inner corner; a metal through hole is formed in the dielectric substrate and is connected with the radiation patch and the metal ground, so that a magnetoelectric dipole radiation path is formed; the first metal patch layer is provided with a probe patch a, the center of the second metal patch layer is provided with a probe patch b, and the probe patch a and the probe patch b form two space orthogonal inverted L-shaped feed probes through a short column and a long column respectively; and the inner conductors of the two feed ports are respectively connected with the long columns of the two probes. The antenna has the advantages of wide impedance bandwidth, wide beam coverage, low profile and easy integration, and is suitable for a low-orbit satellite communication terminal.

A magneto-electric dipole antenna array includes a substrate and at least one antenna unit. Each of the at least one antenna unit includes an electric-dipole component, a magnetic-dipole component, a first feeding probe, a second feeding probe and a stripline. The electric-dipole component is disposed on an upper surface of the substrate. The magnetic-dipole component is disposed in the substrate and between the upper surface and a lower surface of the substrate, and is electrically connected to the electric-dipole component. The first feeding probe is disposed on the upper surface of the substrate for vertical polarization. The second feeding probe is disposed in the substrate and between the upper surface and the lower surface of the substrate for horizontal polarization. The stripline is disposed in the substrate and between the first feeding probe and the second feeding probe for capacitive coupling.

The invention discloses an antenna unit capable of being used for a low RCS array, and belongs to the technical field of antennas. The antenna comprises a radiation structure layer and a feed network layer. The radiation structure layer comprises rectangular metal patches and special-shaped metal patches which are arranged in an array. The rectangular metal patches form a 2 * 4 array in the same plane; the number of the special-shaped metal patches is two, and the two special-shaped metal patches are located below the 2 * 4 array. The feed network layer is located below the radiation structure layer, and a T-shaped branch knot is arranged between an upper metal plate and a lower metal plate of the feed network layer; a radio frequency socket is arranged at the bottom of the lower metal floor, and an outer conductor of the radio frequency socket is connected with the lower metal plate; an inner conductor of the radio frequency socket penetrates through the lower metal floor and is connected with a common end of the T-shaped branch knot, and two branch ends of the T-shaped branch knot are connected with the corresponding special-shaped metal sheets through the corresponding feed probes. According to the invention, a radiation function and a scattering control function are integrated, so that the radiation performance of the antenna is ensured, and the RCS of the unit and the scattering grating lobes during array splicing use are obviously reduced.

The application discloses a microwave plasma testing device, system and method. The microwave plasma testing device comprises an electrostatic probe, a probe current voltage measurement module and a control module which are connected in sequence, and a scanning power generation module is further connected between the electrostatic probe and the control module; the control module generates a test signal, and the scanning power generation module generates a scanning voltage according to the test signal to drive the electrostatic probe to work; the electrostatic probe collects current voltage signals of a microwave plasma to be tested under the scanning voltage when working; the probe current voltage measurement module processes the current voltage signals to obtain processed current voltage signals; and the control module calculates the processed current voltage signals to obtain test parameters of the microwave plasma to be tested. The current voltage signals are collected through the electrostatic probe, the microwave plasma can be tested quickly and accurately, and the accuracy and effect of the test are improved.

The utility model discloses an insulation degree detection device for insulation product processing, which belongs to the technical field of insulation degree detection of insulation products, and is characterized in that the insulation degree detection device comprises a detection table, a fixed rotation mechanism is arranged, support plates of the fixed rotation mechanism are arranged on two sides of the top of a support seat, and a pushing and clamping structure of a right support plate and a servo motor of a left support plate cooperatively operate; an insulating product is placed between the clamping and rotating plate and the pushing and clamping structure, the pushing and clamping structure is controlled to move through the touch screen display controller and is matched with the clamping and rotating plate to complete clamping and positioning, the top face of the product is detected through the discharge probe and the power receiving piece, the electric cabinet detects current, the insulating performance is calculated, and data are transmitted to the touch screen display controller; and the touch screen display controller starts the servo motor according to a set program to drive the clamping and rotating plate to rotate slowly, so that the product rotates to different surfaces or angles along with the clamping and rotating plate to stop, and detection and current calculation are performed again, so that the insulation degree detection of different surfaces of the insulating product can be realized.

The utility model relates to the technical field of detection, in particular to an air tightness testing device for a PCB air pressure sensor, which comprises a negative pressure flow control module, a carrier module and a sealing module, the carrier module comprises a base, an air inlet is formed in the bottom face of the base, and the negative pressure flow control module is connected with the air inlet through a pipeline. The sealing module comprises a cylinder and a signal access probe arranged in the cylinder, a PCB with an air pressure sensor is arranged in the cylinder in a sealed mode, the signal access probe is vertically arranged, the top end of the signal access probe makes contact with an air pressure sensor signal pin on the PCB, a power supply probe is arranged in the base, and the power supply probe is connected with the PCB. The power supply probe is in contact with the bottom end of the signal access probe; and the base and the cylinder are buckled to form a sealed cavity at the same time. The air tightness detection of the air pressure sensor on the PCB can be realized, so that human resources are effectively saved, and the working efficiency is improved.

The utility model discloses a soft contact conductive probe, and belongs to the field of conductive probes. Comprising a needle rod, a needle cylinder and an outer spring, the needle rod movably penetrates through the needle cylinder, the needle rod is sleeved with the outer spring, one end of the outer spring abuts against or is connected with the needle cylinder, and the other end of the outer spring abuts against or is connected with the needle rod; one end of the needle rod is provided with a first electric connection part, the other end of the needle rod is provided with a second electric connection part, and the first electric connection part is provided with an annular spring used for being connected with an external conductive piece. Compared with the prior art, the contact type connection between the conductive probe and the external conductive piece is realized by arranging the annular spring, and the annular spring can be deformed and has a buffering effect, so that the annular spring is flexibly connected with the external conductive piece, and the conductive performance is more stable when the annular spring is used for conducting large current; and meanwhile, the flexible connection can also reduce the abrasion generated between the annular spring and the external conductive piece, so that the service life of the probe can be prolonged.

The invention discloses a compact dual-frequency patch antenna based on a decoupling structure shaped like a Chinese character'tu ', which comprises a top metal layer, a dielectric substrate, a metal ground layer and a coaxial probe feed structure, and a decoupling structure shaped like a Chinese character'tu ', which is formed by symmetrically arranging four metal strips along the horizontal direction, is arranged between the two patches. The antenna can synchronously work at double frequency bands of 3.39 GHz and 5.45 GHz, an electromagnetic weak field area is formed at the position of the feed probe through the decoupling structure shaped like the Chinese character'tu 'to block coupling, and meanwhile, a radiation pattern is corrected by means of a symmetrical structure. The antenna has the advantages of being low in profile, compact in structure, good in dual-frequency decoupling effect and stable in radiation pattern, the integration degree of the dual-frequency antenna array can be improved, and the antenna is suitable for a wireless communication system.

This disclosure relates to a radio frequency (RF) device, which comprises radiators and a distribution network (DN). The DN comprises one or more DN layers. Each DN layer comprises RF circuitry designed to feed at least one radiator or to connect to another DN layer. Each DN layer further comprises one or more bendable feeding probes, each protruding from the DN layer and being connected to the RF circuitry of the DN layer. The RF device also comprises a planar dielectric structure arranged on the DN. The one or more feeding probes extend through one or more gaps in the dielectric structure, and each feeding probe is bent onto and attached to a surface of the dielectric structure. The RF device further comprises a planar array of one or more radiators arranged on the surface of the dielectric structure. Each radiator is coupled to one or two of the feeding probes.

The utility model relates to a wire rod detection device, in particular to a self-detection device for rapidly detecting the bending degree of a wire rod. The device comprises a bending alarm, a belt ring plate and a loop plate, the belt ring plate comprises a first plate body, a conductive positioning ring and a first elastic connecting structure; a first through hole is formed in the middle of the first plate body; a first conductive strip is arranged on the wall surface of the first through hole; first conducting strips are annularly distributed on the periphery of the positioning ring; the loop plate comprises a second plate body of which the middle part is provided with a second through hole, and a soft conductive probe extending into the second through hole; the positioning ring is arranged in the first through hole through a first elastic connecting structure, the first conductive strip and the soft conductive probe are electrically connected with the two electrodes of an external power source respectively, and the bending alarm is connected into the conductive loop. The device is simple in structure, good in stability, cheap and easily available in parts, convenient to operate and capable of accurately and efficiently detecting and feeding back the bending degree of the wire rod, real-time monitoring of the bending degree of the wire rod is achieved, the detection efficiency can be effectively improved, and the product quality is improved.

The utility model relates to the technical field of antennas, and discloses a simple dual-frequency antenna, which comprises an antenna reflector, four feed probes are fixedly arranged at the center of the upper end surface of the antenna reflector, antenna radiators are arranged at the upper ends of the outer walls of the four feed probes, each antenna radiator comprises a four-arm helical antenna, and the four-arm helical antennas are arranged in parallel. A feed network is arranged in the antenna reflector, and antenna frequency modulation branches are fixedly arranged at the front end and the rear end of the two sides of the upper end face of the antenna reflector. According to the utility model, the overall structure is simple and novel, and the antenna has the characteristics of miniaturization and wide frequency band without reducing the antenna performance.

Electrical measurement devices, systems, and methods receive user input(s) selecting an electrical element from a list of electrical elements, each electrical element of the list of electrical elements having an impedance associated therewith. Impedance data of the electrical element's impedance is accessed from a data storage location. Voltage drop across an in-circuit electrical path passing through the electrical element is measured in response to a first conductive probe element of an electrical measurement device being in contact with a first terminal of the electrical element and a second conductive probe element of the electrical measurement device being in contact with a second terminal of the electrical element. Amperage of the electrical element is determined by the processor of the electrical measurement device from the voltage drop and the impedance, and a signal is transmitted to one or more indicators for indicating a status of the electrical element.

The invention provides a directional diagram reconfigurable liquid transparent antenna applied to ocean communication. The antenna is composed of a hexagonal star-shaped radiation cavity, an inverted L-shaped feed probe and a liquid ground. Through design and processing, besides a feed structure, the whole antenna realizes full transparency, has a good optical stealth effect, and has more application scenes. By utilizing the liquidity of liquid, distilled water is injected into different cavities, and the electric field distribution of the radiation cavity is changed, so that different patterns are generated. The antenna can realize a reconfigurable function of a directional diagram at 2.22-2.63 GHz, has five states of directional diagram switching modes, namely + / -15 degrees, + / -35 degrees and 0 degree, has better impedance matching and radiation directivity, and has a good optical stealth effect due to the transparent appearance.

The application discloses a photovoltaic shutter power supply structure, which comprises photovoltaic shutters and a switch piece embedded in a window frame and located at the end of the photovoltaic shutters, the photovoltaic shutters are arranged at intervals from the switch piece, a power supply probe is arranged at the end of the shutter, a copper strip is arranged on the end surface of the switch piece facing the photovoltaic shutter, the power supply probe is in abutment and electrical connection with the copper strip; wherein a fixing plate is arranged on the side of the switch piece away from the photovoltaic shutter, the fixing plate is connected with the window frame, an electromagnet is arranged on the end surface of the fixing plate facing the switch piece, an iron block is arranged on the end surface of the switch piece facing the fixing plate, the electromagnet is arranged at intervals from the iron block, the electromagnet after being electrified adsorbs the iron block, is used for driving the copper strip on the switch piece to be away from the power supply probe, and makes the copper strip arranged at intervals from the power supply probe. The photovoltaic shutter power supply structure arranged in the above manner makes the power supply probe and the copper strip keep apart during movement, avoids friction loss of the photovoltaic shutter during movement, and improves the service life of the product.

The invention belongs to the technical field of microwave photons, and provides a double-ring photoelectric oscillator and a stabilizing method thereof. The oscillator is provided with a long ring and a short ring and comprises a stabilizing device; the stabilizing device comprises a first piezoelectric ceramic optical fiber stretcher, a motor space light delay line and a second piezoelectric ceramic optical fiber stretcher; generating two optical probe signals; the first optical probe signal is converted into a first electric probe signal through the long ring; a second optical probe signal is converted into a second electric probe signal through the short ring; an electric probe signal is output after being subjected to detection, coupling and power division; the two frequency mixers respectively carry out homodyne frequency mixing on the electric probe signal and the phase-shifted and non-phase-shifted radio frequency signals to generate a zero-frequency error signal; the two phase-locked loops generate compensation control signals according to the error signals; the control signal adjusts an optical fiber delay line; the stability of the two loops is ensured, the problem of combined signal frequency drift caused by neglecting short-loop delay change is solved, the coherence requirement on optical signals is avoided by electric domain combination, and smooth tuning of the output radio frequency signal frequency is realized.

The application discloses a broadband circularly polarized metasurface antenna with in-band and out-of-band radar cross section reduction, comprising: an upper layer structure with a metasurface and a lower layer structure with a feed network, the upper layer structure and the lower layer structure being connected through an adhesive layer formed by RO4450F prepreg of a middle layer; the upper layer structure comprises: a metasurface metal patch, a first dielectric substrate and a metal ground plate connected from top to bottom; 16 unit structures are arranged to form a metasurface, and each unit metal patch comprises: a C-shaped metal patch, a circular metal patch and an L-shaped metal patch; the lower layer structure comprises a second dielectric substrate and a feed network; a short-circuit needle and a feed probe are connected with the circular metal patch and the metal ground plate and the feed network respectively. The technical scheme has the characteristics of wideband left-handed circular polarization radiation and low profile, and simultaneously has the in-band and out-of-band radar cross section reduction performance in the antenna operating bandwidth.

The utility model discloses a low-profile circularly polarized antenna covered by a front hemisphere axial ratio wave beam. The low-profile circularly polarized antenna comprises a first dielectric substrate, a microstrip radiation patch, a metal floor, a metalized through hole and a feed probe, a microstrip radiation patch is printed on the upper surface of the first dielectric substrate, and a metal floor is arranged on the lower surface; a metalized through hole is formed in the first dielectric substrate; the microstrip radiation patch is provided with a notch annular gap, a rectangular gap subjected to circular arc processing and a corner cut structure subjected to circular arc processing; a round hole for the feed probe to pass through is etched on the metal floor; the feed probe passes through the first dielectric substrate and is connected with the center of the microstrip radiation patch. According to the utility model, the wide axial ratio wave beam performance is realized, the axial ratio wave beam coverage of the front hemisphere is further realized, and in addition, the antenna also has the advantages of low profile, simple structure and the like.

The invention relates to the technical field of antennas, in particular to a millimeter wave double-frequency arc-shaped circularly polarized dielectric resonator antenna, which comprises a rectangular grounding plate, two groups of arc-shaped dielectric blocks, a plurality of layers of metal rings and a feed probe, and adopts rotary feed to enable the phase difference of feed ports to be 90 degrees in sequence to form good double-frequency circularly polarized performance. The rectangular grounding plate has the same length and width, the arc-shaped dielectric blocks surround the periphery of the double-layer metal ring, are perpendicular to the rectangular grounding plate and coincide with the radial centers of the two groups of arc-shaped dielectric blocks, the height and the thickness of the inner-layer metal ring are lower than those of the outer-layer metal ring, good matching is formed, and the feed probe is connected with the starting side wall surfaces of the arc-shaped dielectric blocks and the grounding plate through welding. The structure can realize a dual-band circular polarization characteristic in a millimeter wave frequency band, is simple in structure and easy to process and form an array on the premise of meeting other performance parameters, and is stable and reliable in structure due to the adoption of the medium material loading radiator, and can adapt to various bad environments.

The utility model relates to a wire rod detection device, in particular to a self-detection device for rapidly detecting the size of a wire rod. The device comprises a maximum value alarm, a size limit plate assembly and a loop plate. The size limit plate assembly comprises a maximum limit plate; the loop plate comprises a second plate body of which the middle part is provided with a second through hole, and a soft conductive probe; the maximum limit plate comprises a third plate body; a third through hole is formed in the middle of the third plate body, a second conductive strip is arranged on the wall surface of the third through hole to form a conductive hole, and the inner diameter of the conductive hole is equal to the maximum size limit value; the two electrodes of the external power supply are electrically connected with the second conductive strip and the soft conductive probe respectively, and the maximum value alarm is connected into the second conductive loop. The device is simple in structure, good in stability, cheap and easily available in parts, convenient to operate, capable of accurately and efficiently detecting and feeding back the size of the wire rod, capable of monitoring the size of the wire rod in real time, capable of giving an alarm in real time when the size of the wire rod is abnormal, capable of effectively improving the detection efficiency and capable of improving the product quality.

The application relates to the technical field of circuit board detection devices, and discloses a detection device for circuit board production and manufacturing, which comprises a detection table, a support frame fixedly connected to the upper surface of the detection table, a pneumatic cylinder fixedly connected to the upper surface of the support frame, a I-shaped mounting frame fixedly connected to the driving end of the pneumatic cylinder, a probe module fixedly installed on the lower surface of the mounting frame, a bearing assembly installed on the upper surface of the detection table, wherein the mounting frame comprises an upper plate body and a lower plate body, the upper surface of the lower plate body is fixedly connected with a plurality of T-shaped limiting rods, the limiting rods penetrate through the upper plate body, and the surface of the limiting rods is sleeved with elastic pieces one. The pneumatic cylinder is stretched to drive the conductive probe to descend until the bottom end of the conductive probe abuts against the polishing layer, then the polishing layer can polish the bottom end of the conductive probe by sliding the cleaning plate, so that the oxide layer at the needle head of the conductive probe is removed, and the detection effect of the conductive probe can be long-effectively maintained.

This invention discloses a Ka-band wide-beam magnetoelectric dipole antenna, belonging to the field of microwave and millimeter-wave communication antenna technology. It includes a dielectric substrate with a metal ground plane on its lower surface and four radiating patches and a feed patch on its upper surface. The radiating patches are rectangular in shape, with rounded corners at one pair of corners. A slot extends from the center of one rounded corner to the end of the arc of the other rounded corner, forming a cross-shaped gap between the four radiating patches. The feed patch is located in the middle of the cross-shaped gap, with a metal through-hole A at one end. The top of metal through-hole A connects to the feed patch, and the bottom connects to the metal ground plane, forming an L-shaped feed probe. Each radiating patch has a metal through-hole B at a right angle, with the top of metal through-hole B connecting to the radiating patch and the bottom connecting to the metal ground plane. This invention features wide bandwidth, wide beam, low profile, and ease of fabrication.

The present disclosure relates to a dielectric relaxation measurement structure, system and method and a semiconductor device, wherein the dielectric relaxation measurement structure is used to measure the dielectric relaxation of a capacitor in the semiconductor device, the semiconductor device comprising a substrate, and the capacitor being formed on the substrate; the dielectric relaxation measurement structure comprising: a charging probe set and a measurement probe set formed on the substrate, the charging probe set comprising a first charging probe connected with a first electrode layer of the capacitor and a second charging probe connected with a second electrode layer of the capacitor, the first charging probe and the second charging probe being conductive with a charging device to enable charging of the capacitor; the measurement probe set comprising a first measurement probe connected with the first electrode layer of the capacitor and a second measurement probe connected with the second electrode layer of the capacitor, the first measurement probe and the second measurement probe being conductive with a detection device to enable detection of the dielectric relaxation of the capacitor after stopping charging of the capacitor. The present disclosure can improve the accuracy of dielectric relaxation detection.

The invention belongs to the technical field of antennas, and particularly relates to a hybrid beam switching antenna for long and narrow space communication and a control method and device, and the antenna comprises a central phased array unit which is used for achieving beam scanning within the range of + / -53 degrees and comprises a first dielectric substrate, a coaxial feed probe and a rectangular radiation patch; 1 * N linearly arranged rectangular radiation patches are equidistantly arranged on the top surface of the first dielectric substrate along the length direction, N is greater than or equal to 8 and is a positive integer, each rectangular radiation patch feeds through two coaxial feed probes which are vertically arranged, and the two coaxial feed probes are symmetrically arranged about the central axis of the rectangular radiation patch along the width direction; and 180-degree phase difference switching and the like are realized. The ultra-wide-angle low-side-lobe high-speed switching device is applied to the special requirements of communication in long and narrow spaces (such as corridors, tunnels and building channels), and has the positive effects of ultra-wide-angle coverage, low side lobe, quick switching and low cost.

This invention discloses an in-situ polymer characterization method based on conductive two-dimensional materials. First, conductive two-dimensional material films and polymer films are prepared. Then, a composite material is constructed based on the conductive two-dimensional material films and the polymer films, such that the conductive two-dimensional material films act as electrical probes, uniformly and orderly dispersed within different polymer matrices, and forming continuous conductive pathways within the composite material. The composite material is used as a platform-based test unit to measure its resistance, obtaining resistance change curves. Analysis and processing of these resistance change curves reveal the structural changes of the polymer matrix during thermal transition and degradation processes, and the glass transition temperature and melting point of the polymer matrix are calculated. This method can be applied to important fields such as polymer thermal property characterization, polymer degradation process research, and polymer degradability evaluation.

The utility model discloses a battery detection device, which belongs to the technical field of battery detection, and comprises an installation assembly, a detection assembly and a bearing assembly, and the installation assembly is provided with the detection assembly and the bearing assembly; the detection assembly comprises a detection moving part and a connection detection part; the connection detection part comprises a detection part and a plurality of power connection parts, each power connection part comprises a power connection probe, an installation sleeve, a power connection head and a spring, the detection part is installed on the detection moving part, the power connection probe is located on the inner side of the installation sleeve and slides in a limiting mode with the installation sleeve, one end of the power connection probe is fixedly connected with the power connection head, and the spring is arranged on the outer side of the power connection probe in a sleeving mode. According to the mode, the power connection probe slides on the inner side of the mounting sleeve and the spring is arranged, so that the power connection head is tightly attached to the bearing assembly, the situation that a test result is wrong due to poor contact during power supply is avoided, current is transmitted only through the power connection probe and the power connection head, energy loss is reduced, detection precision is improved, meanwhile, the equipment size is reduced, and space is saved.