146 results about "Antenna surface" patented technology

The invention discloses a satellite communication terminal shared by a high-throughput satellite and a low-orbit constellation. The satellite communication terminal comprises a radio frequency cabin and a baseband cabin which are rotationally connected with each other, an active phased array transceiving antenna surface, a frequency converter, a power divider and a combiner are integrated in the radio frequency cabin; a high-throughput baseband, a low-orbit baseband, a carrier signal receiver, an upper computer, an inertial navigation unit and a Beidou antenna module are integrated in the baseband cabin; according to the invention, the base band of the high-throughput satellite and the base band of the low-orbit constellation are integrated and designed in the same terminal, the advantages of the two satellites are brought into full play, the coverage is wide, the delay is low, the burden of front business personnel is reduced, and network-free obstacles are eliminated; the problem that the use rate of a high-throughput satellite communication terminal is high is solved, and the communication cost is reduced by one order of magnitude in an area covered by a low-orbit satellite. The problems that low-orbit constellation networking construction is lagged and all areas cannot be covered are solved, and in the area without low-orbit constellation coverage, a user can be temporarily switched to a high-throughput satellite to keep in the network all the time.

For improved Ku band communications, an antenna system includes a planar antenna surface, at least one waveguide feed network, and a waveguide. The planar antenna surface is coupled to at least one port. The at least one waveguide feed network includes an H plane junction splitter and at least two E plane junction splitters. The H plane junction splitter is disposed on a channel septum in a channel. A splitter axis of the channel septum and the H plane junction splitter is rotated about a P axis. The at least two E plane junction splitters are each disposed on septum and coupled to the H plane junction splitter via the channel. The waveguide is coupled to the waveguide feed network.

The invention relates to the technical field of scatter communication, in particular to a narrow-edge traveling wave waveguide slot array antenna. Comprising an antenna housing which adopts a flanging design to protect an antenna surface; the slot radiation port is composed of a rectangular port array with horizontal short edges; the coupled feed port is composed of a rectangular port array with horizontal short edges; and the power division network is formed by cascading H-surface T-shaped power dividers and is formed by equally-divided and unequally-divided one-to-two power dividers. The problems that an existing panel antenna is low in gain, large in size and heavy in weight are solved.

The invention discloses a satellite stability control method based on servo motor control, and relates to the field of communication-in-motion systems, and the satellite stability control method based on servo motor control comprises the following steps: step 1, tracking the real-time attitude change of an antenna through an inertial navigation module, and outputting the real-time attitude change to a control panel; 2, calculating the theoretical angle of the antenna through Beidou data, and outputting the theoretical angle to a control panel; 3, the control panel controls a driver to control a servo motor of a transmission mechanism through a three-ring control algorithm, so that the axis of a real-time antenna surface is kept consistent with a theoretical angle obtained through Beidou data calculation; compared with the prior art, the method has the beneficial effects that based on three-ring superposition PID control logic of a current ring, a speed ring and a position ring, the limitation of single-ring PID control of a stepping motor can be effectively overcome, and stable pointing and communication performance of an antenna in various complex environments can be ensured; and under the condition of signal interruption, the direction to the target satellite can still be kept.

The invention relates to the technical field of defect detection, and discloses an electrically tunable antenna structure defect automatic detection method and system, and the method comprises the steps: collecting the multi-modal data of an electrically tunable antenna, and generating a three-dimensional model; mapping the three-dimensional model to a two-dimensional space, displacing pixels by analyzing the curvature distribution condition of the surface of the electrically tunable antenna, and filling a missing region in the two-dimensional space to obtain a two-dimensional model; identifying to obtain a first defect identification result; extracting a defect endpoint set from the first defect identification result, constructing a defect graph, and mapping the defect graph into the three-dimensional model to obtain a second defect identification result of the electrically tunable antenna; the method is suitable for geometric structures of a paraboloid and a cylindrical surface in the electrically-tunable antenna, image distortion and information loss caused by a curved surface structure of the electrically-tunable antenna are reduced, the quality of the constructed model is improved, the problems of local overheating, connecting piece loosening and the like caused by electrical faults in the electrically-tunable antenna can be found in time in combination with thermal image data, and the reliability of the electrically-tunable antenna is improved. And the accuracy of a defect identification result is improved.

The invention discloses a biplane tapered slot antenna, and belongs to the technical field of antennas. The antenna comprises a dielectric substrate, a metal radiation patch, a metal conduction band and a resistor. The radiation patch is arranged in a double-plane manner, so that the different-plane tapered slot line is constructed, and the impedance matching of the antenna is improved while the power capacity is improved. The metal radiation patch comprises an upper radiation patch and a lower radiation patch, the metal conduction band and the lower radiation patch form a microstrip line, and the resistor, the upper radiation patch and the lower radiation patch are connected in series into a whole, so that the effective suppression of the reflection voltage of the antenna is realized; therefore, resistance loading does not affect the radiation efficiency of the antenna. Technical index parameters such as power capacity, reflection voltage and radiation efficiency are considered at the same time, a technical scheme with excellent comprehensive performance is provided for ultra-wideband microwave pulse radiation, and the ultra-wideband microwave pulse radiation model can be used as an antenna basic model.

To provide an antenna snow melting device that can simplify the calculation of the power required to melt snow.SOLUTION: An antenna snow melting device 400 attached to an antenna reflector 500 includes an imaging unit 401 that images the antenna reflector 500, a measuring unit 402 that acquires imaging data of the antenna reflector 500 from the imaging unit 401 and measures the snow accretion rate, which indicates the rate of snow accretion per unit area of the antenna surface of the antenna reflector 500, on the basis of the acquired imaging data, and a control unit 403 that controls a heating unit 501 installed on the antenna reflector 500 on the basis of the snow accretion rate of the antenna surface of the antenna reflector 500.SELECTED DRAWING: Figure 13

The present invention discloses a rapid switching device for a Ku and Ka dual-frequency transceiver assembly, which includes a base, an azimuth electrical compartment arranged on the base, an external battery and an elevation electrical compartment arranged on the azimuth electrical compartment, and an antenna surface and a polarization rotation assembly arranged on the elevation electrical compartment. One end of a Ku circular waveguide extension passing through the antenna surface is provided with a Ku feed rod, and the other end is provided with a Ku transceiver. This rapid switching device for the Ku and Ka dual-frequency transceiver assembly facilitates the rapid replacement of the Ku / Ka frequency bands, while retaining the automatic polarization satellite alignment rotation, ensuring that the overall weight of the device is relatively light and it is convenient to use. If the polarization of the Ku frequency band needs to be manually adjusted, then each time it is necessary to log in to the device wirelessly or wired to view the current polarization angle; or manually switch after finding the polarization angle through the screen, and the device is very inconvenient to use.

The utility model relates to the technical field of antenna testing, in particular to a profiling supporting seat for antenna testing, which comprises a base, an accommodating groove is arranged on a supporting surface of the base, a plurality of sliding plates are vertically and slidably arranged in the accommodating groove, and the sliding plates are uniformly arranged in the accommodating groove. An air bag assembly is arranged between the sliding plate and the base. The air bag assembly comprises a main air bag and an auxiliary air bag, and air spaces of the main air bag and the auxiliary air bag are communicated together. The main air bag is located between the bottom end of the sliding plate and the containing groove. Gap spaces exist between the adjacent sliding plates, an auxiliary air bag is correspondingly arranged in each gap space, and the top ends of the auxiliary air bags are attached to the side walls of the top ends of the sliding plates. According to the utility model, the technical problem of self-adaptive profiling supporting of the profiling supporting seat on the surfaces of antennas of different models is solved.

The present disclosure relates to an antenna platform arrangement (1) comprising a movable antenna plate (2) having an antenna surface (3) and an opposing connection surface (4), a fixed base (5) and a connection means (6) connecting the connection surface (4) and the fixed base (5). Moreover, the movable antenna plate (2) being associated with an apex (c0′) of a conical space (c0) being in-between said fixed base (5) and said movable antenna plate (2), wherein said connection means (6) is configured to selectively control said movable antenna plate (2) about said conical space (c0), to a pre-determined maximum angle (α) relative a first plane (x1) being parallel with said fixed base (5).

The invention relates to a method for calibrating the normal azimuth of an antenna array surface of an interference system, which comprises the following steps of: arranging high-precision control points near an interference antenna of a certain type by introducing methods such as national geodetic point positioning and single-point positioning, and measuring coordinate information of required point positions by measuring equipment; spatial data fitting is carried out on an interference antenna surface of a certain type and a geometric center normal of the interference antenna surface by using SMN precision industrial measurement software, and center normal spatial pointing and azimuth information of an antenna array surface is solved. And enabling a geometric center normal of a horn antenna opening surface to reversely coincide with a center normal of an antenna array surface through a total station lofting method, and modulating the center phase direction of each frequency point main lobe beam of a certain type of interference antenna by using phase modulation software to be consistent with the azimuth direction of the geometric center normal of the antenna array surface. By means of the method, the normal orientation alignment precision of the geometric center of an antenna array surface of a certain type of interference system can be improved from 1 degree to 10 seconds, and therefore the precision of main lobe beam center phase pointing of the interference antenna array surface is indirectly improved.

The invention relates to a control unit (100) for receiving and processing radio signals in a vehicle (1300). The control unit (100) comprises a housing (103), a main circuit board (205) arranged in the housing (103) and having at least one contact surface (218), and an antenna (107). The antenna (107) has an antenna surface (119) arranged on a top surface (108) of the housing (103) and a connection contact (221) with at least one spring-elastic contact finger (223) that contacts a contact surface (218) of the main circuit board (205). The antenna surface (119) and the connection contact (221) are formed in one piece from a metal sheet.

The invention belongs to the field of antenna processing, and particularly relates to a reflector antenna surface precision measuring device which comprises a workbench and a laser scanning head. A first electric push rod is fixedly connected to the side face of the workbench, a top cover is fixedly connected to the output end of the first electric push rod, a bottom bin is fixedly connected to the position, corresponding to the top cover, of the bottom of the workbench, a negative pressure pipe is fixedly connected to the center of the bottom of the bottom bin, and a plurality of extraction openings are formed in the top end of the negative pressure pipe. A first electric push rod is controlled to drive a top cover to move downwards, the top cover covers the top of a bottom bin to form a relatively sealed space, then a draught fan is started, the air inlet end of the draught fan is connected with an air filter, and the draught fan sucks dust from the bottom of the antenna through a negative pressure pipe so as to suck the dust in the antenna, so that the antenna can be conveniently cleaned; therefore, errors caused by metal chippings and dust generated by processing adhered to the surface can be avoided, and a laser scanning head can conveniently acquire data of the reflecting surface of the antenna.

The application relates to a large-scale rope net antenna surface shape measurement and regulation method based on force-position fusion vision measurement, and relates to the field of antenna precision control and optimization. In order to solve the problems of high cost, high structural complexity and limited regulation precision of the existing technology, the application provides a high-efficiency regulation method. The method comprises the following steps: collecting displacement data of upper and lower rope net nodes and tensile spring marker points, and recording images; pre-processing the image data, and extracting actual coordinates of the marker points; comparing the actual coordinates with design coordinates, calculating node displacement errors, and obtaining root mean square error values of an antenna reflecting surface through a shape error formula; based on the root mean square error values, calculating deformation amounts of piezoelectric actuators and spring deformation variables, determining driving voltages and tensile force parameters; generating control instructions and optimizing regulation according to the calculation results. The method is suitable for design and maintenance of a spacecraft antenna, and has the advantages of high precision, low cost and easy operation.

The invention relates to a radar sensor (10) comprising a waveguide antenna (12) for transmitting and / or receiving radar waves (14) with respect to a sensor environment (16), with an antenna surface (20) facing the sensor environment (16) and comprising at least in sections an electrically conductive surface material (22), and with at least one antenna element (24) which is designed as at least one opening (26) in the antenna surface (20) and which lies opposite a protective component (34) arranged in the sensor environment (16), wherein the antenna surface (20) has structured reflection inhibiting means (36) which are designed to inhibit the reflection of scattered waves (38) as radar waves (14) reflected by the protective component (34) between the protective component (34) and the antenna surface (20) at least by wave interference of the scattered waves (38).

The invention relates to the technical field of mobile communication, and particularly discloses an optimization method and system for an IOT network assisted by a movable antenna unmanned aerial vehicle, which maximizes long-term uplink throughput under physical constraints and energy constraints by jointly optimizing the trajectory of the unmanned aerial vehicle and the discrete orientation of a movable antenna surface, and improves the network performance. And a future ground equipment motion track or a channel state does not need to be predicted. According to the method and the system, an optimization problem is decomposed into time slot level sub-problems, the position of the unmanned aerial vehicle is optimized through a discretization strategy of structure perception, and the orientation of a movable antenna surface is configured by adopting a projection-free conditional gradient method, so that the overall optimization problem is solved step by step. A simulation result shows that compared with a reference scheme, the method and the system provided by the invention have the advantages that the uplink throughput is remarkably improved in a dynamic IoT environment, and meanwhile, the long-term energy consumption of the UAV is always controlled within a budget range.

This invention provides an electronically scanning antenna system capable of communicating with communication equipment with high precision and continuous operation. [Solution] The electronic scanning antenna system (1) comprises a plurality of antenna surfaces (S), detection units (12, 131), a selection unit (132) that, based on the detection results of the detection units, selects one of the plurality of antenna surfaces as the main antenna surface and one of the other antenna surfaces as the sub-antenna surface, a receiving unit (134) that receives a received signal from a communication device via the main antenna surface and the sub-antenna surface, and a transmitting unit (135) that transmits a transmitted signal to a communication device via the main antenna surface. Each of the plurality of antenna surfaces is equipped with a plurality of units (U1 to U4) through which the received signal and the transmitted signal are transmitted. The detection unit detects the received signal value of the received signal transmitted to each of the plurality of units.

The invention relates to the technical field of RFID antenna reliability testing, in particular to an RFID antenna reliability testing device and method, and the testing device comprises a test board, an installation simulation mechanism, a conveying mechanism and static pressure load testing equipment. According to the invention, through the soil in the soil storage tank, the broken stones spread on the surface of the RFID antenna and the conveying belt for supporting the RFID antenna, and through introducing the gas with set temperature and humidity into the through hole, the installation environment of the RFID antenna during actual installation is simulated, and the compressive property of the RFID antenna is detected in cooperation with a static pressure load test device; therefore, a test result which is more practical can be obtained. The rubble is automatically spread on the surface of the RFID antenna through the rubble spreading part before each test, the rubble and soil are automatically separated from the RFID antenna after the test is finished, manual spreading and cleaning are not needed, and the complexity of test operation is not increased while it is guaranteed that the test condition conforms to the actual installation environment.

The invention provides a novel slot flat plate scattering portable antenna system, which is applied to the technical field of antenna scattering communication. Comprising an antenna surface subsystem, a servo turntable subsystem and a foldable tripod unit, wherein the servo turntable subsystem and the foldable tripod unit are mounted on a back plate of the antenna surface subsystem, and the foldable tripod unit supports the servo turntable subsystem; the antenna surface subsystem transmits and receives electromagnetic wave signals; the servo turntable subsystem bears and drives the antenna surface subsystem to perform azimuth and pitching rotation, and comprises an azimuth assembly, a pitching assembly, an ultrasonic sensor and a servo control system; the ultrasonic sensor measures the real-time distance from the back plate; the servo control system determines a current pitch angle according to the real-time distance; and under the condition that the current azimuth angle and the current pitch angle of the antenna surface subsystem meet the preset condition of the alignment target, the azimuth assembly and the pitch assembly are controlled to stop running. The problems that an existing portable antenna is large in size, tedious in erection, low in attitude adjustment intelligent degree, too large in weight and insufficient in modular design are solved.

The utility model discloses a satellite-ground communication terminal of a low-orbit satellite, relates to the field of satellite communication, and is used for solving the problems of high degree of freedom and shock resistance of the satellite-ground communication terminal. The terminal comprises a three-axis adjusting system, and the three-axis adjusting system is connected with the antenna surface so as to adjust the azimuth angle, the roll angle and the pitch angle of the antenna surface. The three-axis adjusting system is mounted on the antenna base; and a damping mechanism is arranged in the antenna base and is connected with the three-axis adjusting system. The designed terminal has three adjustment freedom degrees of azimuth angle, roll angle and pitch angle, and a damping mechanism is arranged under the three-axis adjustment system, so that vibration in the movement process can be effectively absorbed, and the operation stability of the terminal is improved.

This utility model discloses a hermetically sealed combination antenna for 4G and GPS in wellbore applications, relating to the field of combined antenna technology. It includes a screw sleeve fixedly mounted on a housing, through which the GPS antenna and 4G antenna pass and are electrically connected to the housing. A rubber post, encasing the GPS and 4G antennas, is fixedly mounted inside the screw sleeve. This hermetically sealed combination antenna for 4G and GPS in wellbore utilizes the rubber post encasing the two antennas within the screw sleeve to seal and enclose the inner side of the screw sleeve, thereby improving the sealing line between the inner side of the screw sleeve and the antennas. This prevents external moisture from entering the inner side of the housing along the inner side of the screw sleeve and the antenna surface, improving the protection of the internal circuitry.

The application provides a multi-frequency antenna and a communication device. The multi-frequency antenna comprises a reflecting plate, a first radiating unit and a second radiating unit, the first radiating unit and the second radiating unit are arranged on one side of the reflecting plate, and the first radiating unit is located between the reflecting plate and the second radiating unit. The first radiating unit comprises a first radiating part and a metal plate, and the metal plate is located between the first radiating part and the second radiating unit. The second radiating unit comprises a second radiating part and a metal ring, and the metal ring is located between the second radiating part and the metal plate. When the above structure is adopted, the size of the multi-frequency antenna as a whole can be reduced, and the first frequency band and the second frequency band have high isolation, so that the two frequency bands can work independently, the multi-frequency antenna can meet the miniaturization demand of the common antenna surface, the antenna works stably, and the efficiency is high.

The utility model discloses an asymmetric coupling type double-cage short-wave antenna device, and belongs to the technical field of radio short-wave communication. The antenna device comprises a self-supporting tower assembly, a coupling lower cage antenna surface assembly, a direct-feed lower cage antenna surface assembly, a distribution box assembly, a feed end insulator assembly, a direct-feed upper cage antenna surface assembly and a main lightning rod assembly. The asymmetric coupling type double-cage short-wave antenna device provided by the utility model has the characteristics of wider working bandwidth and low elevation radiation, and the antenna surface and the self-supporting tower assembly are designed in an integrated conformal manner, so that the influence of performance index reduction caused by the fact that the self-supporting tower assembly passes through the antenna surface is eliminated; the device not only can cover an ultra-wideband short-wave communication frequency band of nearly four times of frequency, but also can realize excellent performance of low return loss, high gain, low radiation elevation angle and omnidirectional radiation.

The invention discloses an irregular sub-array division design method for array antenna beamforming, which comprises the following steps: constructing an association mathematical model of an irregular sub-array division array plane based on a preset sub-array set and an array antenna array plane, the sub-array set comprising a plurality of irregular candidate sub-arrays, the association mathematical model is used for representing an affiliation relationship between the plurality of irregular candidate sub-arrays and all array elements in the antenna array plane; based on reference full-filling array excitation and a preset excitation matching criterion, excitation of each irregular candidate subarray is determined, and the reference full-filling array excitation is excitation required by target beam forming; based on the association mathematical model and excitation of each irregular candidate subarray, a convex optimization model is constructed, and the convex optimization model takes a main lobe forming wave number matching error and a peak side lobe level as a joint optimization target; and solving the convex optimization model to obtain an optimal irregular subarray division scheme and excitation of each subarray. According to the invention, good radiation characteristics of the antenna can be maintained while the cost of the antenna system is reduced.

The present invention discloses a radar test system adjustment method, comprising: placing a first laser line marker on a horizontal turntable, the first laser line marker emitting a first laser beam to a flat plate in front of an angular reflector to generate a first cross-shaped cursor, a second laser line marker near the turntable emitting a second laser beam to the flat plate to generate a second cross-shaped cursor; adjusting the first laser line marker so that the horizontal lines of the two cross-shaped cursors are parallel to each other; adjusting the pitch axis angle of the turntable so that the horizontal lines of the two cross-shaped cursors coincide, and adjusting the turntable or the angular reflector so that the first laser line marker and the angular reflector are aligned with each other. The technical solution provided by the present invention can solve the technical problem in the prior art that it is difficult for the angular reflector to align with the radar antenna when building a radar darkroom test environment. The present invention does not require the installation of a reflective device on the antenna surface and the angular reflector surface, and can solve the problem of large measurement errors caused by uneven force applied to the reflective mirror surface.

The present invention provides a method for reconstructing key features of a curved surface antenna with multi-modal visual data fusion, which relates to the field of vision-based feature extraction. The method includes the following steps: designing an artificial enhanced feature pattern and projecting it onto the surface of the curved surface antenna to be measured; using a structured light camera to collect surface images and three-dimensional point clouds of the curved surface antenna to be measured containing the artificial enhanced feature pattern at different viewpoints; establishing a feature vector of all the center points of the assembly holes in the viewpoints based on the surface images; obtaining the matching relationship of the assembly holes in the three-dimensional point cloud, mapping the matching results of the assembly holes to the three-dimensional point cloud, and stitching and fusing them at multiple different viewpoints to obtain the complete point cloud data of the curved surface antenna to be measured; performing semantic segmentation and feature fitting on the complete point cloud data to output the set of center points of the assembly holes and the set of center points of the pads. Through non-contact measurement with multi-modal visual data fusion, the present invention realizes high-precision measurement of the size of the curved surface antenna and feature reconstruction without reducing the resolution.

The utility model discloses an anti-interference data receiver based on dam displacement monitoring data transmission, which comprises a receiver structure, a control box is arranged on the front side of the receiver structure, an antenna assembly is arranged at the top of the control box, a track frame is bolted at the top of the control box, a fixed block is arranged at the top of the track frame, and a data transmission module is arranged at the top of the fixed block. The left side of the fixing block is in bolted connection with a protection assembly, and a sliding block is inserted into the inner wall of the protection assembly, so that the problems that when an existing anti-interference data receiver based on dam displacement monitoring data transmission is used, an antenna is prone to being damaged, a feeder line of the antenna is prone to being aged and damaged, and consequently signal transmission loss is increased, and the data transmission efficiency is improved are solved. Even signal transmission is interrupted, or the polarization mode of the antenna may be changed due to factors such as external force impact, the signal receiving effect is affected, and dust accumulated on the surface of the antenna can attenuate satellite signals, resulting in weakening of the strength of the signals reaching a receiver.

The invention relates to a patch antenna, wireless equipment and a polarization fingerprint authentication method and system of the wireless equipment. In the first aspect, the patch antenna is provided, the patch antenna is provided with injection grooves, the injection grooves are formed according to a set grooving scheme, the grooving schemes of different patch antennas are different, and the grooving schemes comprise the number of the injection grooves, the area where the injection grooves are located, the distance between the injection grooves and the center of the antenna and the length of the injection grooves. The second aspect provides a wireless device having the above patch antenna. The third aspect provides a polarization fingerprint authentication method for wireless equipment. The method comprises the following steps: sending a wireless signal through the wireless equipment; receiving the wireless signal and extracting a polarized fingerprint; matching the polarized fingerprint with a polarized fingerprint stored in a polarized fingerprint database; and authenticating the wireless equipment according to a matching result. By slotting the surface of the antenna and injecting the polarized fingerprint, the problem of insufficient fingerprint difference caused by hardware defects in the existing radio frequency fingerprint technology is solved.

The application provides a novel gap flat plate scattering portable antenna system, which is applied to the technical field of antenna scattering communication. The system comprises an antenna surface subsystem, a servo turntable subsystem installed on a backboard of the antenna surface subsystem and a foldable tripod unit, the foldable tripod unit supports the servo turntable subsystem; the antenna surface subsystem transmits and receives electromagnetic wave signals; the servo turntable subsystem carries and drives the antenna surface subsystem to rotate in azimuth and elevation, and comprises an azimuth component, an elevation component, an ultrasonic sensor and a servo control system; the ultrasonic sensor measures the real-time distance from the backboard; the servo control system determines the current elevation angle according to the real-time distance; in the case that the current azimuth angle and the current elevation angle of the antenna surface subsystem meet the preset conditions for aligning the target, the azimuth component and the elevation component are controlled to stop running. The problems of the prior art, such as large volume, complicated erection, low intelligent degree of attitude adjustment, excessive weight and insufficient modular design, are solved.

The present invention discloses an ultra-wideband notch antenna for a 5G millimeter wave communication system, comprising a first metal layer, a second metal layer and a third metal layer; the second metal layer is a metal ground, the third metal layer is a feeding part, and the first metal layer is a radiating part, comprising a radiating patch and a parasitic patch; the radiating patch is a dipole structure, comprising two dipole arms, and the end of each dipole arm is bent inward on the side away from the symmetry axis; the parasitic patch comprises a first parasitic patch and a second parasitic patch, the first parasitic patch is located outside the end of each dipole arm, and is used to excite a current in the same direction as the dipole arm within the working frequency band to improve the impedance matching of the antenna; the second parasitic patch is located between the ends of each dipole arm, and is equivalent to a half-wavelength resonator at the center frequency of the required filtering band. When the antenna operates within this frequency band, the surface current of the antenna will be concentrated on the parasitic patch, thereby causing impedance mismatch and achieving effective filtering of this frequency band.