104 results about "Radiation mode" patented technology

The invention discloses a broadband circularly polarized magnetoelectric dipole antenna with superposed Ka-band radiation modes, and belongs to the field of radio frequency front-end devices. The antenna is composed of an electric dipole patch composed of a rectangular patch and a stepped patch, a magnetic dipole radiator composed of four metal columns, an H-shaped slotted coupling floor, a feeder line, coaxial feed metal columns, an SIW structure, a metal ground backboard, an upper dielectric substrate, a lower dielectric substrate and a pp bonding layer, an antenna unit is subjected to 4 * 4 arraying, and the circularly polarized radiation performance of the antenna unit is verified. According to the invention, the circularly polarized wave beam range is wide, and the axial ratio bandwidth is 3GHz to cover the complete working frequency band. After the array is formed, the active S parameters of the array elements are well matched, and the excellent axial ratio performance is still achieved during beam scanning.

A GNSS active antenna with improved performance in the presence of interfering signals is described. The GNSS active antenna meets the requirements of DO-301 for Airborne GNSS antennas when in normal operation. The GNSS active antenna also generates a low elevation null steered to any azimuth angle when in an environment with an interfering signal. The null has minimal performance impacts at higher elevation angles near zenith. The GNSS active antenna includes a right-hand circular polarized microstrip antenna with a concentric vertically polarized monopole antenna. The GNSS active antenna also meets the requirements of ARINC 743 antenna outline and mounting hole pattern.

The invention discloses a 6DMA-assisted high-speed railway communication resource collaborative optimization method based on reinforcement learning, and belongs to the technical field of high-speed railway movable antenna communication resource scheduling. The 6DMA-assisted high-speed railway communication resource collaborative optimization method comprises the main steps of constructing a system model, designing a joint optimization problem, solving the joint optimization problem and the like. According to the invention, through a six-degree-of-freedom reconstruction radiation mode, compared with traditional MA / FAs, the spatial degree of freedom is further released, and blind area formation and double near-far effect can be significantly reduced; meanwhile, static precoding and step-by-step search are replaced by an active-passive beam + array surface motion linkage decision through the TTD3, end-to-end control is achieved, and the time delay requirement of the high-speed rail is met; in addition, the collaborative optimization mechanism gives consideration to exploration efficiency and convergence stability, so that the system can keep a link reliable, and the method has relatively high practical application value.

The invention discloses an ultra-wideband miniaturized vertical polarization horizontal omnidirectional radiation antenna, and belongs to the technical field of antenna engineering and wireless communication. The antenna comprises a vertical polarization radiator, a metal top cap, a parasitic metal column, a metal floor and a polarization surface, wherein the vertical polarization radiator is composed of four miniaturized Vivaldi antennas which are placed towards the end-fire direction; the metal top cap and the metal floor are respectively located above and below the radiator, the polarization surface surrounds the periphery of the radiator, and two ends of the parasitic metal column are respectively connected with the metal top cap and the metal floor. The miniature Vivaldi antenna is adopted to form the radiator, so that the problem of distortion of a high-frequency radiation pattern caused by the size of an ultra-wideband antenna is solved; a low-frequency magnetic dipole radiation mode is formed by using the parasitic metal columns, the metal top caps and the metal floor, and the low-frequency bandwidth is expanded. On the basis of miniaturization, the antenna provided by the invention can realize S11lt in 1-6GHz; and vertical polarization horizontal omnidirectional radiation of-10dB is realized, and the out-of-roundness of an omnidirectional radiation pattern is less than 3dB.

An apparatus, method and computer program product for: selecting (405), based on at least one first criterion, a set of antenna elements, determining (410) a radio beam codebook comprising a plurality of radio beam configurations for the set of antenna elements, determining (415) a radiation pattern obtainable based on the radio beam codebook, determining (420), based on the obtainable radiation pattern, a radio beam configuration that fulfills a second criterion, and applying (425) the radio beam configuration to a radio beam provided by the set of antenna elements.

The application provides a signal feed assembly, which comprises a substrate, a signal coupling unit, a switching unit and a transmission unit. The switching unit comprises a control terminal, a common terminal and at least two switching output terminals. The control terminal and the common terminal are electrically connected to the transmission unit, so as to transmit baseband signals and radio frequency signals through the transmission unit. The signal coupling unit is arranged apart from a radiating element, so as to transmit radio frequency signals through the radiating element to generate multiple radiation modes. The signal coupling unit comprises at least two coupling patches, each of which is electrically connected to a corresponding switching output terminal. The switching unit controls the switching of the coupling patches through the switching output terminals to switch the multiple radiation modes. The application comprises a modular signal feed assembly and a metal radiating element, so as to form a corresponding antenna module to cover multiple frequency bands, improve the frequency width and have the best antenna efficiency. The application also provides an antenna module and an electronic device.

A differential feed dual-polarization super-directivity array antenna comprises a plurality of array units, and each array unit comprises a supporting structure, a main radiator, a metal floor and a radiation parasitic structure. The metal floor is arranged below the supporting structure, the main radiator is arranged in the supporting structure, the radiation parasitic structure is arranged above the supporting structure, and the main radiator is connected with a metal coaxial connector arranged on the metal floor through the feeder line structure. According to the invention, a dual-polarization radiation mode is realized by adopting two pairs of differential port feed structures, and an array design scheme with a super-directivity characteristic can be realized under two polarizations, so that the directivity upper limit value of a traditional aperture antenna scheme is broken through, and the capacity and the performance of a communication system are remarkably improved.

The application discloses a blackbody-thermoelectric pile cooperative thermistor multi-temperature-point zero-point matching calibration method. The method utilizes the Seebeck effect of the thermoelectric pile, establishes the accurate corresponding relationship of the blackbody standard temperature-thermistor resistance value through zero-point matching, carries out dynamic temperature scanning on different calibration point temperatures of the cavity, and obtains the thermistor parameters of multiple temperature points. Finally, the accurate R-T curve is fitted through the least square method. The method innovatively calibrates the thermistor through the blackbody heat radiation mode. The method does not need to disassemble the instrument, does not damage the stability of the original system, can complete the rapid calibration of the instrument on site, effectively reduces the calibration cost, and guarantees the temperature calibration accuracy and the calibration effect.

Methods of arranging and designing antennas to optimize electromagnetic field distributions in the near-field region of an antenna to optimize parameters such as electric field (E-field), magnetic field (H-field), specific absorption rate (SAR), power density (PD), etc. while ensuring specific performance of the antenna in the far-field region in terms of gain, efficiency, radiation pattern, etc.

This invention provides a wideband airspace radiation device and a wideband anti-unmanned system. The wideband airspace radiation device includes a mounting plate; a first-band radiator is arranged at the center of the mounting surface to provide omnidirectional coverage of the first band; several parasitic elements are arranged circumferentially along the first-band radiator; the second-band radiator employs directional antenna elements, with at least two second-band radiators symmetrically arranged on both sides of the first-band radiator; wherein the parasitic elements are located between the first-band and second-band radiators, and the parasitic elements are used both to guide the electromagnetic field distribution of the first-band radiator and to reflect and guide the electromagnetic waves emitted by the second-band radiator; the several second-band radiators achieve omnidirectional coverage of the second band in a back-to-back configuration. The wideband airspace radiation device provided by this disclosure can eliminate the coverage blind spots of multi-band combined omnidirectional radiators, achieving effective protection of targets.

The present invention discloses a dielectric rod antenna based on a hybrid radiation mode and a design method thereof, comprising: a ceramic dielectric rod and a dielectric-filled rectangular open waveguide, wherein the dielectric-filled rectangular open waveguide comprises a rectangular metal open waveguide, the open waveguide is filled with a dielectric, and a matching section of the ceramic dielectric rod is embedded in the filling dielectric; an inner conductor portion of a coaxial probe is inserted into the filling dielectric, and the coaxial probe is perpendicular to the transmission surface of the rectangular metal open waveguide; in the antenna structure, the dielectric-filled rectangular open waveguide not only serves as a waveguide feeding structure, but also participates in radiation as an open waveguide antenna, and both the open waveguide antenna and the dielectric rod antenna are end-fire radiation modes; and in the low-frequency band, the antenna structure uses open waveguide radiation as the main radiation mode, and the ceramic dielectric rod is used to improve radiation directivity.

The application belongs to the technical field of wireless communication, and relates to the structural design of a broadband antenna, and specifically provides a low-profile broadband dual-polarized metasurface antenna which is composed of a microstrip feed network 5, a lower layer dielectric substrate 4, a metal floor 3, an upper layer dielectric substrate 2 and a metasurface radiation array 1 which are sequentially stacked from bottom to top. The structure of the metasurface radiation array is creatively designed through eigenmode analysis, so that the strongest current is regulated to the central rectangular patch, thereby enabling the microstrip feed structure to excite vertical and horizontal polarization radiation modes through the cross-shaped slot on the metal floor, realizing the dual-polarization and broadband characteristics of the antenna. Finally, the bandwidths of the two ports of the antenna cover 3.42-6.09 GHz and 3.56-6.24 GHz respectively, the relative bandwidths are 56.15% and 54.69% respectively, the maximum gains of the two ports in the passband can reach 10.4 dBi and 11.0 dBi respectively, and the profile height is only 0.085λ0. Moreover, the application has the advantages of simple structure, wide bandwidth, low profile, low processing and assembling difficulty and the like.

The application discloses a kind of super surface circularly polarized antennas, belong to wireless communication technical field, including: super surface, super surface includes a plurality of first super surface units and a plurality of second super surface units arranged in array, first super surface unit is located in the periphery of second super surface unit, and second super surface unit is the symmetrical structure formed by cutting first super surface unit;Dielectric substrate, dielectric substrate includes upper layer dielectric substrate and lower layer dielectric substrate;Driving patch, driving patch is located between upper layer dielectric substrate and lower layer dielectric substrate;Metal floor, metal bottom plate is arranged on the lower surface of lower layer dielectric substrate;Microstrip feed structure, through coupling gap and driving patch non-contact coupling;By unit array optimization, phase difference is generated in orthogonal radiation mode, and circularly polarized radiation is realized.50 ohm microstrip line feeding is used, and non-contact coupling excitation is realized by coupling gap and driving patch;Synergistic design realizes 31.5% impedance bandwidth, 20.4% axial ratio bandwidth, and full coverage WBAN5.15-5.825GHz frequency band.

The invention provides a hollow-core anti-resonance optical fiber with staggered ring structures, and relates to the technical field of special optical fibers, and the hollow-core anti-resonance optical fiber comprises a plurality of staggered ring structures which are uniformly attached to the inner surface of an outer cladding layer and form a hollow-core fiber core area in a surrounding manner; each staggered ring type structure comprises a plurality of circular rings, the circle center of each circular ring and the center of the hollow fiber core area are located on the same straight line, and the adjacent circular rings intersect. The beneficial effects are that phase matching between a fiber core mode field and a radiation mode is avoided through the design of a staggered ring structure, ultra-low limited loss (a typical value is lower than 0.001 dB / km) can be realized in a 1.55 [mu] m wave band, and limited loss is lower than 0.002 dB / km in a relatively wide wave band range of 1.38-1.7 [mu] m; the staggered ring structure can realize excellent single-mode transmission performance in a wide spectrum range.

The invention relates to a terahertz modulator based on change and BIC mode switching and a mode switching method thereof. The modulator comprises a silicon substrate, a metasurface and a VO2 patch. The silicon substrate provides structural support; the metasurface is arranged on the surface of the silicon substrate, is composed of a pair of metal split resonance notch rings in mirror symmetry, and can excite a anapore mode by forming a closed surface current loop, excite an A-BIC mode by structure parameter tuning, and excite an S-BIC mode by maintaining mirror symmetry. The VO2 patch is embedded into the gap of the gap on the surface of the metasurface, the conductivity is regulated and controlled by means of temperature so as to change the current distribution on the surface of the metasurface, and dynamic switching between a BIC mode and an apole mode is achieved. According to the invention, through excitation of non-radiation mode modulation, metal ohmic loss is avoided, the maximum modulation depth reaches 80% when the A-BIC is switched to the apole mode, and the modulation efficiency is significantly improved.

The invention provides an antenna assembly, electronic equipment and a control method, and relates to the technical field of electronic equipment. The antenna assembly comprises a first radiation branch knot and a second radiation branch knot which are vertically arranged, a first breaking joint is arranged between the radiation branch knots, and the first radiation branch knot and the second radiation branch knot are provided with a first feeding point and a second feeding point respectively; the feed power supply is electrically connected with the first feed point and the second feed point respectively; the switching device is arranged between the feed source and the second feed point and is used for switching a first switching state and a second switching state; in the first switch state, the length of the transmission line from the feed power supply to the second feed point is a first length; in the second switch state, the length of the transmission line from the feed power supply to the second feed point is a second length; the first length is different from the second length. The antenna assembly not only can support high-performance satellite communication, but also can reduce the performance loss of the antenna by optimizing the polarization radiation mode, thereby ensuring the stability and coverage range of communication.

The application is a high degree of freedom far-field customized compact circularly polarized planar lens antenna. The application relates to the technical field of radiative metasurface antennas. Due to the limitation of space feed, it is difficult for metasurfaces in the microwave band to be applied to integrated systems. Here, the application realizes precise far-field radiation mode manipulation. Two E-shaped unit superimpositions constitute a geometric phase-based metasurface unit, realizing 2pi range transmission phase coverage and high transmittance. The application method realizes highly customized far-field mode control. Several proof-of-concept RTM prototypes are designed and manufactured, realizing energy-controllable multi-beam, wide-angle deflection and customized beamforming. Simulation and experimental results verify that the proposed method and RTM structure can provide a compact wavefront modulation platform and realize highly accurate and customized far-field beamforming.

The present invention discloses a low-profile, high-gain, co-aperture, broadband dual-polarization antenna, comprising a dual-port feed network, a first metal patch, a second metal patch, a dielectric substrate, a ground plate, and a metal cavity. The antenna has dual input ports, each of which feeds circularly polarized signals. Vertical polarization and circular polarization are generated by independent radiators. The radiators and feed ports of the two ports are perpendicular to each other in space to reduce coupling effects, achieve independent and complete radiation, and ultimately achieve different operating modes in the same frequency band at the two ports. The dual-port feed network and the first metal patch are both printed on one side of the dielectric substrate, and the ground plate is printed on the other side of the dielectric substrate. The metal cavity is positioned parallel to the dielectric substrate below, with a preset distance between the two. The present invention can reduce the complexity of antenna integration and improve antenna utilization efficiency while minimizing the impact between the different radiation modes of the two ports. The antenna can be widely used in relay communications and high-altitude detection.

The invention discloses a high-isolation integrated optical array chip and a manufacturing method thereof. The manufacturing method comprises the following steps: dividing a substrate into a plurality of optical unit regions and isolation channel regions; forming an isolation groove in the isolation channel region on the substrate; photoetching a pattern of an optical isolation layer in the isolation channel region, and forming the optical isolation layer at the bottom and on the side wall of the isolation channel by adopting a proton exchange or metal ion diffusion process; and photoetching a pattern of an isolation metal layer in the isolation channel region, and forming the isolation metal layer on the optical isolation layer by depositing a metal film layer. According to the invention, the isolation channels formed by the optical isolation layers and the isolation metal layers can absorb radiation modes generated by the integrated optical waveguides in the adjacent integrated optical units, and absorb and attenuate radiation electric signals of the metal electrodes in the integrated optical units. Therefore, the crosstalk of optical signals and radiation electric signals among the integrated optical units in the integrated optical array chip is greatly reduced; a higher degree of isolation between integrated optical units is achieved.

The application discloses a compact four-mode four-port antenna, and belongs to the antenna field. The compact four-mode four-port antenna comprises a first dielectric substrate, a second dielectric substrate, a metal ground plate and a third dielectric substrate which are sequentially stacked, the upper surface of the first dielectric substrate is provided with a segmented annular metal patch, the upper surface of the second dielectric substrate is provided with a circular metal patch, and the lower surface of the third dielectric substrate is provided with a microstrip feed line and a solder pad. The four-mode four-port antenna further comprises a first metal column, a second metal column and a third metal column, the segmented annular metal patch is electrically connected with the microstrip feed line through the first metal column, the circular metal patch is electrically connected with the microstrip feed line through the second metal column, and the solder pad is electrically connected with the metal ground plate through the third metal column. The circular metal patch is used for realizing three polarized radiation modes, and the segmented annular metal patch is used for realizing a fourth polarized radiation mode, so that the manufacturing demand of miniaturization and integration of communication equipment can be met.

The invention relates to a dual-polarized dielectric patch antenna array suitable for being closely arranged at intervals, which comprises a lower dielectric substrate, a metal reflection floor, an upper dielectric substrate and two dielectric patches arranged in an array, which are sequentially stacked from bottom to top, and is characterized in that a metal sheet is attached to the vertical surface of each dielectric patch in the Y-axis direction; capacitive coupling generated by the metal sheets is used for counteracting strong inductive coupling of two working modes of the adjacent dielectric patches, so that the isolation degree between the first port and the third port is improved, and H-surface decoupling is realized; and the attenuation constant of the TM011 mode of the antenna in an IV region is maximized by adjusting parameters, E-plane decoupling is realized, and the IV region is a region of the dielectric patch on one side of the forward direction of the Y axis. On the basis that a section and a complex decoupling structure do not need to be added, an ideal isolation effect and a distortionless radiation mode can be achieved, and coupling of the E face and the H face is restrained at the same time.

The invention discloses a millimeter wave high-gain planar super-structure grating antenna, which structurally comprises an excitation waveguide with an electromagnetic wave incident port, a quasi-periodically arranged metal grating structure and a two-dimensional dielectric waveguide with a single-sided conductive layer at the bottom. The antenna adopts a quadruple rotational symmetry structure design, and ensures that radiation modes excited by four ports have consistency. The large-aperture antenna is excited based on a traveling wave mode, periodic modulation of a dielectric waveguide propagation mode is realized through grating loading, and energy is prompted to be radiated in a fast wave form; and meanwhile, a small number of grating units are non-uniformly arranged, so that the grating lobe effect of the antenna array is effectively reduced. Electrically large-size aperture excitation is realized through a low-complexity planar structure, and the antenna has the characteristics of high efficiency and high gain, and can be applied to a millimeter wave communication system.

The invention relates to a method for detecting weak exogenous errors of a synthetic aperture radiometer based on mode brightness temperature, and belongs to the technical field of space microwave remote sensing. According to the method, the following steps are respectively executed on horizontal polarization microwave signals and vertical polarization microwave signals: carrying out grid division on the surface of the earth; for each grid point, establishing an L-band multi-incidence-angle microwave radiation mode brightness temperature database; gridding the brightness temperature data measured by the synthetic aperture radiometer to obtain measured brightness temperature data corresponding to each grid point; establishing a differential data box of each grid point; based on the differential data box of each grid point, three-time Sigma abnormal value detection is carried out, and data detection of external error interference in each grid point is realized; and after data interfered by the external source error in the grid points are eliminated, neighborhood brightness temperature consistency deviation detection is carried out on residual data in the grid points, so that data detection interfered by the external source error by taking the grid points as units is realized.

For example, an apparatus may include an antenna array, which may be configured to include a plurality of configurable-radiation-pattern antenna elements. For example, a configurable-radiation-pattern antenna element of the plurality of configurable-radiation-pattern antenna elements may have a configurable element-radiation-pattern. For example, the apparatus may include control circuitry, which may be configured to control an array-radiation-pattern of the antenna array. For example, the control circuitry may be configured to control the array-radiation-pattern of the antenna array according to an array-radiation-pattern setting, for example, by configuring a plurality of element-radiation-patterns for the plurality of configurable-radiation-pattern antenna elements based on the array-radiation-pattern setting.

This invention discloses a mobile terminal antenna structure and its performance improvement method, belonging to the field of mobile terminal antenna technology. To address the problems of low antenna radiation efficiency due to electromagnetic shielding of the metal frame and limited internal space in existing mobile terminals, as well as the difficulty in simultaneously achieving miniaturization and multi-band compatibility, the core solution of this invention is: creating a breakpoint in the metal frame; through the coordinated arrangement of the breakpoint, feeding structure, and grounding structure, guiding the radio frequency current on the metal frame to form a co-directional differential mode current, exciting the radiation mode of the PCB board, and expanding the effective radiation area of ​​the antenna; lumped elements can be loaded at the breakpoint to achieve resonant frequency modulation and multi-band compatibility. This invention does not require additional increase in terminal volume, can significantly improve antenna radiation efficiency, reduce the required net space for the antenna, and is compatible with various mobile electronic terminals with metal frames.

The invention provides a silicon photon gyroscope with a film-coated mode filtering double-Y waveguide integrated structure. The silicon photon gyroscope comprises a laser, a detector, a symmetrical double-Y waveguide, a first filter, a second filter, a third filter, a fourth filter, a first phase modulator, a second phase modulator and a ring, symmetrical optimization design is adopted for the symmetrical double-Y waveguides, namely mode excitation is reduced by conducting collaborative optimization on the front Y waveguide and the rear Y waveguide, the bifurcation angle of the front Y waveguide and the rear Y waveguide is controlled to be 8-12 degrees, the high-order mode excitation rate is controlled to be within 1%, and therefore space radiation mode errors and zero drift are remarkably reduced. A high-order mode excited in the beam splitting process is suppressed through the first and second filters, and a new mode of temperature gradient or stress introduction is prevented through the third and fourth filters; selective suppression of a high-order spatial mode is realized by adopting the filter with a film-coated structure, and meanwhile, low-loss transmission of a fundamental mode is kept, so that the zero-bias stability and the measurement precision of the silicon photon gyroscope are remarkably improved.

The embodiment of the application discloses a low-profile small-size wideband omnidirectional vertical polarization slot antenna, which comprises a dielectric plate arranged on the top of a metal radiator and in contact with the metal radiator, the metal radiator is in contact with the metal layer of the dielectric plate, the side wall of the metal radiator is provided with a slot, and an omnidirectional vertical polarization radiation mode is formed through equivalent magnetic current radiation of the slot; the metal feeding probe comprises an inner conductor and an outer conductor in a coaxial structure; a circular truncated cone-shaped metal cavity is formed in the metal shell, the inner conductor is connected with the bottom of the metal shell, the antenna radiator is arranged in the metal cavity, the outer conductor penetrates through the metal radiator, and the top end is in abutting contact with the metal layer of the dielectric plate and is fixedly connected through the assembly surface of the dielectric plate and the circular truncated cone-shaped shell to form a radome. The technical scheme provided by the embodiment of the application solves the problem that the existing omnidirectional antenna form is relatively complex in structure and it is difficult to realize more functions in one structure.

The invention provides an air conditioner tail end system combining convection and radiation modes, and belongs to the technical field of air conditioner tail end systems.The air conditioner tail end system comprises a ceiling radiation refrigeration plate, a ground radiation heating plate, a humidifying and purifying fresh air fan, a fan coil and other tail end devices, a control chip is combined to establish a multi-area cooperative control module, and the multi-area cooperative control module is connected with the ceiling radiation refrigeration plate, the ground radiation heating plate, the humidifying and purifying fresh air fan and the fan coil. A double-layer game optimization model is adopted to realize coordination control of energy efficiency ratio maximization and comfort level optimization; a state matrix is constructed by collecting multi-region environment data, intelligent judgment is performed based on temperature and differential pressure threshold values, optimal operation parameters are solved by using a multi-objective optimization algorithm, the operation state of each device is dynamically adjusted, and a technical path of closed-loop feedback control is formed. The technical problem that intelligent cooperative control over convection and radiation modes cannot be achieved through a multi-area air conditioning system is solved.

The application discloses a fan-ring patch antenna with multiple radiation characteristics and a design method thereof, and belongs to the field of antennas and microwave technologies. A fan-ring patch is loaded on a ground plate as a radiation main oscillator, the fan-ring patch antenna is connected with the ground plate through a vertical short-circuit wall and a coaxial cable feeding structure, an inner and outer circumference short-circuit and a non-enclosed structure with a half radius open circuit are formed. The fan-ring patch adopts coaxial cable feeding, different radiation modes are excited and controlled by changing the feeding position to realize different radiation characteristics. The application has a series of advantages such as wide beam, large scanning range, small volume, low profile and simple structure, and has a wide application prospect in various wireless communications of the Internet of Things, satellite communications and anti-interference systems.

The application belongs to the field of antenna design, and relates to a metasurface antenna, and specifically provides a wideband high-gain metasurface antenna, which provides a beneficial reference method for the optimized design and performance improvement of the wideband high-gain metasurface antenna, so that the wideband high-gain metasurface antenna can be truly applied to a wireless communication system. The application comprises, from top to bottom, a metasurface structure 1, a first dielectric substrate 2, a metal ground layer 3, a second dielectric substrate 4 and a T-shaped microstrip feed line structure 5. The simple metasurface structure is combined with a microstrip double-slit coupling feed structure, the patch shape of the uniform metasurface structure is skillfully trimmed, the mode current gain is significantly improved, and then multiple lateral radiation modes with high gain are excited. Finally, the antenna has the advantages of wideband high-gain characteristics and low profile. In addition, the antenna structure is simple and convenient to process.