116 results about "Perpendicular polarization" patented technology

The invention discloses a frequency domain adaptive clutter suppression method and system for a dual-polarization weather radar, and relates to the technical field of weather radar processing. According to the invention, pulse-level quality control and ground feature identification marking are carried out on radar original echoes; calculating power spectrums of the marking units, performing dynamic noise measurement and data quality grading, and screening out effective processing units; constructing a Gaussian mixture model of a power spectrum of an effective unit, and iteratively estimating model parameters through an expectation maximization algorithm to realize complete separation of a ground feature spectrum and a meteorological spectrum in a frequency domain; inverting single-channel parameters based on the separated meteorological spectrum; a cooperative spectrum separation strategy is adopted for horizontal and vertical polarization channels, and dual-polarization parameters such as differential reflectivity, correlation coefficients and differential phases are inverted based on the filtered dual-channel signals; according to the invention, high-precision separation of clutters and meteorological echoes is realized, the loss of meteorological signals is significantly reduced while ground features are effectively suppressed, and the accuracy and reliability of dual-polarization parameter inversion are improved.

A system and method for determining an error vector magnitude (EVM) of a polarized transmission from a device-under-test (DUT). A first signal transmitted by the DUT is received via a horizontally polarized receiver antenna, and a second signal transmitted by the DUT is received via a vertically polarized receiver antenna. The second signal is coherent with the first signal. The EVM is calculated based at least in part on the first signal and the second signal and a reference signal.

The invention discloses a millimeter wave dual-polarization phased-array antenna beam forming method and device, and relates to the technical field of high-frequency communication, and the method comprises the following steps: obtaining a complex weight signal of each array element in an antenna array under a horizontal polarization channel and a vertical polarization channel, respectively carrying out amplitude response and phase response acquisition and calibration processing on the complex weight signal; performing dynamic extraction and modeling on amplitude errors and phase errors of each array element in different polarization channels; on the basis of error estimation, constructing a machine learning prediction module comprising a time sequence prediction model; performing joint estimation on a real-time error estimation result and a prediction error result; constructing a hardware-software collaborative calibration structure comprising a dynamic gain control module on the basis of the compensation weight; beam focusing of the target space area is realized; according to the invention, the hidden problems of beam offset, sidelobe lifting, gain loss and the like caused by inconsistency of polarization channels are solved.

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.

This application provides an identification device and method for soybean grain screening equipment in soybean milk production. The device scans and images the soybean surface. A polarization beam splitter in the camera's optical path separates the reflected light from the soybean surface into parallel polarized light and orthogonally polarized light with mutually perpendicular polarization directions, acquiring parallel and orthogonal polarized images. The parallel and orthogonal polarized images are adaptively fused to generate a polarization-fused image that suppresses surface reflection interference and enhances structural information. Texture periodic features characterizing the regularity of the soybean skin texture and distortion energy features characterizing the degree of surface undulation are extracted from the polarization-fused image. The texture periodic features and distortion energy features are input into a pre-constructed feature discrimination model for defect identification. Based on the defect identification results, it is determined whether defects exist on the soybean surface. Using the scheme of this application, polarization-fused imaging can suppress surface reflection interference, thereby improving the accuracy of soybean surface defect detection.

The invention relates to a dual-polarization 2bit transmission type metasurface unit working in a Ka wave band, which can realize four-state phase regulation and control of horizontal polarization and vertical polarization on a specified frequency band. And an implementation scheme with a better system integration advantage is provided for the high-frequency multi-polarization reconfigurable antenna system. The unit is composed of two groups of linearly polarized 2bit reconfigurable units which are orthogonally arranged, and each unit is composed of a pair of active receiving antennas at the bottom and a pair of active transmitting antennas at the top; a pair of PIN diodes are respectively integrated in a receiving antenna and a transmitting antenna, and four discrete phase states are realized through combination of switch states, so that 2-bit phase regulation and control are completed. The invention has the following advantages: 1, low transmission amplitude loss and precise phase gradient characteristic are shown in the dual-polarization Ka wave band, and high-precision wave beam regulation and control can be realized; 2, due to the fact that dual-line polarization adopts a synchronous regulation and control mode, the unit can complete phase control only through two feeder lines, and compared with an independent polarization control scheme, the complexity of a feed and bias network is remarkably reduced, so that interference of a bias circuit on electromagnetic radiation characteristics is effectively reduced; and 3, the emergent wave beam of the transmission type metasurface is located on the same side with the transmission type metasurface, so that the shielding of the feed source can be reduced, the interference of a reflection path is avoided, the aperture efficiency is improved, and the sidelobe is reduced.

The embodiment of the invention provides a dual-polarization indoor distribution antenna, and belongs to the antenna communication equipment technology, the dual-polarization indoor distribution antenna comprises a vertical polarization radiation unit and a horizontal polarization radiation unit, the vertical polarization radiation unit comprises a grounding plate and a conical radiation oscillator arranged on the grounding plate, the conical radiation oscillator is used for being excited to radiate vertical polarization electromagnetic waves; the horizontally polarized radiation unit comprises a plurality of radiation subunits, the plurality of radiation subunits are sequentially arranged around the peripheral side of the conical radiation oscillator, a radiation gap is formed between every two adjacent radiation subunits, and the radiation gaps are used for being excited to radiate horizontally polarized electromagnetic waves; the orthographic projection of the radiation subunit on the grounding plate is located in the grounding plate. According to the dual-polarization indoor distribution antenna provided by the embodiment of the invention, broadband coverage can be realized, and the multi-band requirement of an indoor communication system is met.

A millimeter wave end-fire dual-polarized antenna array disclosed by the present invention comprises two dual-polarized units, each dual-polarized unit comprises a vertical polarization unit and a horizontal polarization unit, the vertical polarization unit is composed of a substrate integrated waveguide, a first metal patch, a second metal patch and a first metal through hole, and the horizontal polarization unit is composed of a second metal patch and a second metal through hole. The horizontal polarization unit is composed of a substrate integrated coaxial line, a dipole and a third metal patch; the rear end of the vertical polarization unit is connected with the substrate integrated waveguide power divider; the substrate integrated waveguide power divider is connected with the substrate integrated waveguide grounding coplanar waveguide; the rear end of the horizontal polarization unit is connected with the substrate integrated coaxial line power divider; the substrate integrated coaxial line power divider is connected with the substrate integrated coaxial line grounding coplanar waveguide; the grounding coplanar waveguide is connected to the coaxial joint for antenna excitation. The antenna has the characteristics of wide working bandwidth, compact structure, stable radiation performance and the like, and has a wide application prospect in millimeter wave wireless communication.

The present application relates to radar signal processing technical field, specifically provide a kind of staggered pulse repetition interval time-frequency domain dual-polarized radar detection variable estimation method, comprising: in frequency domain, the estimation of echo signal-to-noise ratio, reflectivity factor, differential reflectivity of horizontal / vertical polarization based on power spectral density;And the estimation of average Doppler velocity and velocity spectrum width;In time domain, after ground clutter filtering based on odd-even pulse, respectively, odd-even pulse correlation parameter estimation is carried out, so that two detection variables of dual-polarized radar correlation coefficient and differential propagation phase shift of odd-even pulse are obtained respectively, then odd-even combination can obtain the estimation result of accurate correlation coefficient and differential propagation phase shift.The present application realizes the accurate estimation of dual-polarized radar multi-class detection variable, ensures that estimation result is not disturbed by ground clutter interference, simultaneously adapts single pulse repetition interval and staggered pulse repetition interval two working modes, improves the reliability and applicability of radar detection.

The invention provides a dual-polarization weather radar time domain echo simulation method based on Doppler spectrum reconstruction, and the method comprises the steps: constructing a scanning region and a resolution volume grid, dividing a sub-resolution volume grid, and carrying out the interpolation of the sub-resolution volume grid through a trilinear interpolation method; micro-physical information and a scattering matrix of each phase-state particle are calculated, echo intensity contributions are superposed along a speed coordinate axis of a Doppler spectrum and then are sequenced, a horizontal polarization channel Doppler spectrum of each sub-resolution volume grid is obtained, and an antenna pattern is taken as a weight and is superposed, so that a horizontal polarization channel Doppler spectrum of a resolution volume grid is obtained; and obtaining the power spectrum density of the horizontal polarization channel through coordinate transformation, obtaining the IQ echo sequence of the horizontal polarization channel through inverse Fourier transformation, and obtaining the IQ echo sequence of the vertical polarization channel in combination with the differential reflectivity factor, the differential propagation phase shift and the co-polarization correlation coefficient. According to the invention, reliable simulation of time domain echoes in the weather process of any shape spectrum can be realized.

This invention discloses a single-polarization broadband signal anti-reflection power-generating glass, an etching method, and an installation method, relating to the fields of communication and photovoltaic power generation technology. The power-generating glass includes an ultra-clear glass substrate and a plurality of single-segment thin-film solar cells connected in series within a layer of the ultra-clear glass substrate. Each single-segment thin-film solar cell includes a positive electrode, a power-generating thin film layer, and a back electrode. The positive electrode, power-generating thin film layer, and back electrode are sequentially stacked and bonded along the thickness direction of the ultra-clear glass substrate, and each is etched with periodically arranged rectangular patterns. The long side of each rectangular pattern is horizontal, forming a frequency-selective surface for the penetration of vertically polarized electromagnetic signals. This invention, by etching rectangular patterns on the power-generating glass, achieves efficient transmission of signals in the target frequency band while ensuring power generation functionality, solving the problem of traditional power-generating glass blocking communication signals and improving the quality of broadband signal transmission.

A dynamic 3D light scattering particle size distribution measurement device includes a polarization splitter for generating an s laser beam with perpendicular polarization and a p laser beam with parallel polarization that travels parallel to and spaced apart from the s laser beam. A lens is used to focus the s laser beam and the p laser beam onto a common focus area inside a sample holder holding a sample whose particle size is to be measured. An s light intensity detector measures a time-resolved s light intensity from s backscattered light from the focus area. An s-polarisation filter allows perpendicularly polarized light to pass, resulting in s measuring light, and includes a light detector for time-resolved intensity measurements of the s measuring light. A p light intensity detector measures a time-resolved p light intensity detects p backscattered light from the focus area, and includes a p polarization filter that allows parallel polarized light to pass. A light detector provides for time-resolved intensity measurement of the p measuring light, and an evaluation unit automatically calculates the particle size distribution from the time-resolved p light intensity and the time-resolved s light intensity.

This invention discloses a polarization state modulation method based on regular polyhedral constellation points, comprising: selecting the order of polarization modulation and the corresponding regular polyhedral class; dividing the original binary bitstream into a conventional modulation bitstream and a polarization state modulation bitstream, wherein the conventional modulation bitstream is used to generate conventional modulation symbols, and the polarization state modulation bitstream is used for polarization state mapping; obtaining the corresponding polarization state description parameters using the polarization state modulation bitstream and the order of polarization modulation, determining the polarization weighting factor and performing polarization weighted fusion to obtain dual-channel high-dimensional modulation symbols to be transmitted; transmitting the symbols through an orthogonal dual-polarization antenna after preprocessing; performing RF front-end processing on the received horizontal and vertical polarization components of the RF signal at the receiving end to obtain the Jones vector representation of the baseband received signal; recovering the polarization state information by combining the Stokes parameters, and recovering the original binary bitstream by combining the conventional modulation and demodulation results.

This utility model relates to the field of drone jamming technology and discloses a handheld drone jamming device that enhances jamming effect. The handheld drone jamming device that enhances jamming effect includes a mounting plate, on which a first antenna array and a second antenna array are disposed. The first antenna array and the second antenna array are arranged crosswise. This utility model overcomes the shortcomings of existing vertically polarized antennas in drone countermeasures by adopting cross-polarized antennas, and significantly improves the countermeasures effect of jamming guns.

The invention discloses a ferrite-loaded dual-polarization wing conformal Vivaldi ultra-wideband one-dimensional phased-array antenna, which comprises a wing carrier contour, a horizontal polarization Vivaldi conformal linear array, a vertical polarization Vivaldi conformal linear array, a vertical polarization embedded dielectric plate, a horizontal polarization embedded dielectric plate, a decoupling patch, a partitioned ferrite, a micro-strip power divider, a fixed substrate and a metal floor, according to the utility model, a conformal and embedded combined layout is adopted, dual-polarization efficient radiation is realized, and electromagnetic coupling interference between two polarization units is suppressed by slotting above horizontal polarization Vivaldi units at two sides, loading decoupling patches and adopting a cross layout; the block type ferrite is located at a specific position above the metal floor; according to the invention, the layout and the appearance of the dual-polarized Vivaldi antenna are designed to realize complete conformality, the end-on-fire gain of a wing carrier under the constraint of a limited space is remarkably improved by utilizing the characteristics of the Vivaldi antenna, and excellent performances such as ultra wide band, wide-angle scanning and low profile are realized by loading ferrite materials.

The application discloses a kind of methods and systems for calculating the rotation angle of spaceborne L-band microwave radiometer, method includes: obtaining the satellite orbit parameters and the brightness temperature data of ocean time of spaceborne L-band microwave radiometer;Simulate horizontal polarization, vertical polarization and cross-polarization radiation brightness temperature data;The stokes radiation brightness temperature data obtained by simulation is converted into the brightness temperature data under antenna coordinate system using rotation matrix;Using joint cost function, the above-mentioned simulation and conversion are carried out using nonlinear iteration until the rotation angle change is less than the first set threshold and the sea surface salinity change is less than the second set threshold, solve the rotation angle and sea surface salinity;According to the rotation angle, recalculate the rotation matrix;According to the new rotation matrix, the obtained brightness temperature data is converted into corresponding horizontal polarization TH, vertical polarization TV, cross-polarization T3 and T4, complete the accurate conversion of spaceborne L-band microwave radiometer brightness temperature.

The utility model discloses a laser radar receiving unit and a laser radar system, and the laser radar receiving unit comprises a bonding lens which is used for focusing a light beam entering a telescope; the reflecting mirror assembly comprises a plurality of reflecting mirrors and is used for enabling the focused light beams to enter the receiving light path assembly; the receiving light path assembly is arranged in the telescope space between the balsaming lens and the reflector assembly, and the receiving light path assembly is used for receiving the light beams reflected by the reflector assembly; the receiving light path assembly is arranged in the direction parallel to the central axis of the telescope and facing the inlet of the telescope to form a receiving main light path. A polarizing film is arranged on the receiving main light path; and the detection assembly comprises a first analog detector which is arranged in the polarization direction of the polaroid and is far away from the balsaming lens, and is used for receiving one beam of polarized light in the two vertical polarization directions of the polaroid. According to the invention, all the components are arranged and fixed in the telescope shell, so that the space can be effectively integrated, and the structural stability of the receiving unit can be ensured after the polarization detection channels are increased.

The invention discloses an indoor base station communication and sensing integrated antenna layout structure and system, and belongs to the technical field of wireless communication and sensing fusion. The structure comprises an annular substrate (1), M communication antenna units (2) and N sensing antenna units (3), and the M communication antenna units and the N sensing antenna units are alternately and sparsely arranged along the circle of the annular substrate. The communication unit adopts horizontal polarization, and the working frequency band is below 6GHz; the sensing unit adopts vertical polarization, and the working frequency band is 24-30 GHz; a signal processing module (4) is arranged in the center. Through triple mechanisms of spatial isolation, polarization orthogonality and frequency band dislocation, the coupling isolation degree of the inductive signals is larger than or equal to 28 dB, 180-degree blind-area-free coverage is achieved, the personnel positioning error is smaller than 0.3 m, and communication and sensing concurrency are supported. The system is compact in structure, can be directly integrated in an existing indoor pico base station, and is suitable for smart factories, shopping malls, hospitals and other scenes. Actual measurement data shows that the sensing refresh rate is increased to 120 Hz, and the communication error rate is reduced to 1e-6 magnitude.

The application discloses a kind of dual-frequency dual-polarized reinforced concrete quality detection device and its operating method, the device includes dual-frequency dual-polarized ultra-wideband antenna, dual-frequency acquisition control processing system and display control terminal, the dual-frequency dual-polarized ultra-wideband antenna is integrated together with dual-frequency acquisition control processing system, including a pair of horizontal polarization intermediate frequency transceiving ultra-wideband antenna and two pairs of vertical polarization high frequency transceiving ultra-wideband antenna, and dual-frequency acquisition control processing system is interacted with display control terminal by wireless communication mode.The device disclosed in the application adopts middle, high frequency antenna combination, solves the problem of mutual restriction of detection depth and resolution, greatly improves detection performance.Horizontal, vertical dual-polarized detection technology is used, the electromagnetic shielding effect of shallow reinforcement mesh is overcome, and the detection ability of deep target is improved.

The application provides a co-boresight dual-polarized indoor antenna and a communication device, the co-boresight dual-polarized indoor antenna comprising a vertical polarization antenna, a horizontal polarization antenna and a feeding structure, the vertical polarization antenna comprising a metal floor, a triangular metal plate, a plurality of grounded metal columns and a first copper cladding layer, the triangular metal plate and the plurality of grounded metal columns being arranged between the metal floor and the first copper cladding layer; the horizontal polarization antenna comprising a double-layer dielectric plate and a slot array, the bottom of the double-layer dielectric plate being covered with copper to form the first copper cladding layer, and the slot array being arranged on the top of the double-layer dielectric plate; the horizontal polarization antenna and the vertical polarization antenna are arranged in a co-boresight mode, the structure is simple, and the volume is small; the feeding structure comprises a first feeding structure and a second feeding structure, the first feeding structure being connected with the vertical polarization antenna, and the second feeding structure being connected with the horizontal polarization antenna; the first feeding structure and the second feeding structure are arranged in a non-overlapping mode on the metal floor, so that coupling interference is avoided.

The application relates to a wide-band circularly-polarized duplex feed network in the technical field of satellite communication, in particular to a wide-band circularly-polarized duplex feed network which comprises three layers of metal layers connected by screws, a first waveguide cavity and a second waveguide cavity formed in the inside, and horizontal polarization ports and vertical polarization ports arranged on the three layers of metal layers for entering electromagnetic waves; a low-frequency left-circularly-polarized port and a low-frequency right-circularly-polarized port are arranged on the first waveguide cavity for outputting low-frequency linearly-polarized signals; a high-frequency left-circularly-polarized port and a high-frequency right-circularly-polarized port are arranged on the second waveguide cavity for outputting high-frequency linearly-polarized signals; the application can realize the functions of simultaneous transmission and reception, time-sharing transmission and reception, and left and right circular polarization; when used for single circular polarization, the corresponding cross-polarization ports are connected with loads, and at this time, the application is used as a single-rotation-direction antenna feed source; when used for double circular polarization, all the ports are connected with corresponding radio frequency channels.

This application provides an antenna structure based on a slot gap waveguide, comprising a first cover plate, a second cover plate, and an intermediate conductive plate spaced between the first and second cover plates; a first slot is provided on the surface of the first cover plate adjacent to the intermediate conductive plate; a second slot is provided in the intermediate conductive plate extending along its thickness direction; a plurality of first conductive pins are periodically distributed on the surface of the intermediate conductive plate adjacent to the first cover plate, the first cover plate, the intermediate conductive plate, and the plurality of first conductive pins constituting a first antenna element; a plurality of second conductive pins are periodically distributed on the surface of the intermediate conductive plate adjacent to the second cover plate, the second cover plate, the intermediate conductive plate, and the plurality of second conductive pins constituting a second antenna element; the first antenna element transmits horizontally polarized waves when fed with a signal alone, and the second antenna element transmits vertically polarized waves when fed with a signal alone; the first slot and the second slot are configured to achieve circular polarization characteristics when the first antenna element and the second antenna element are simultaneously fed with signals of equal amplitude and a phase difference of 90°.

The application provides a small-size ultra-wideband wall-hanging antenna with high stability, and specifically relates to a single-polarization directional wall-hanging antenna, which is vertically polarized and comprises a first radiating vibrator, a second radiating vibrator, a first coupling sheet, a second coupling sheet, a third coupling sheet, an antenna cover, a cable feeder and a reflecting plate. The first radiating vibrator and the second radiating vibrator form an asymmetric antenna dipole radiator, and the first coupling sheet and the leftmost part of the second radiating vibrator form an asymmetric structure. The second coupling sheet and the third coupling sheet are separately arranged on the left and right sides of the included angle formed by the first radiating vibrator and the second radiating vibrator. The technical scheme improves the feeding mode and feeding process of the existing wall-hanging antenna on the market, greatly reduces the production cost of the antenna, has the characteristics of low intermodulation, ultra-wideband, simple structure, low cost, stable electrical performance and the like, and can be perfectly applied to a mobile communication system with directional coverage requirements.

The application discloses a kind of full duplex antennas based on slot coupling differential feed, including two pairs of butterfly dipole antennas, first dielectric plate, four groups of vertically placed signal transmission lines, metal floor, second dielectric plate, two U-shaped feed networks and third dielectric plate;The application is placed on the upper surface and lower surface of first dielectric plate by setting two pairs of butterfly dipole antennas, to radiate horizontal polarization and vertical polarization wave, in order to generate differential signal, four T-shaped slots with the same size are etched on the metal floor, then the differential signal at T-shaped slot is transmitted to the feed position of dipole antenna by four groups of vertically placed transmission lines, and the two U-shaped feed networks are placed vertically without dielectric layer, so as to obtain larger port isolation, which can be applied to simultaneous same frequency full duplex communication system, and wireless signals can be transmitted and received simultaneously at the same frequency, thereby improving spectrum utilization efficiency.

The invention discloses a high-precision electromagnetic detection device, which belongs to the technical field of radiation emission testing and comprises a movable base, a mast is arranged on the upper surface of the movable base, a linear module is vertically arranged in the mast, a fixing plate is mounted on the surface of a sliding table of the linear module, and an antenna assembly is mounted on the upper surface of the fixing plate. By arranging the antenna assembly, the physical length of the antenna can be dynamically adjusted, half-wavelength resonance conditions of different test frequency bands can be matched in real time, dynamic impedance matching is achieved in continuous scanning, polarization switching can be completed through electric control in the static state of the physical structure by arranging the horizontal polarization unit and the vertical polarization unit, and the test efficiency is improved. Cable abrasion, phase instability and vibration interference caused by mechanical rotation are avoided, the measurement consistency is guaranteed, rapid complete polarization scanning is supported, the test efficiency and precision are effectively improved, electromagnetic reflection interference can be restrained through annular scattering ribs arranged on the surface of the mast, and the measurement accuracy is further enhanced.

The invention discloses a multi-beam circularly-polarized phased-array antenna test system and calibration and test methods, and belongs to the technical field of antenna test, the system comprises a real-time clock controller, a dual-linear-polarization horn antenna, a single-polarization horn antenna, a switch matrix, a six-axis mechanical arm, a mechanical arm pulse trigger and a vector network analyzer. And the real-time clock controller is used as a core controller, generates multiple groups of time sequence signals according to the received test parameters, synchronously triggers the switch matrix to carry out beam switching when the six-axis mechanical arm moves to each test position, and controls the vector network analyzer to carry out data sampling. Amplitude and phase information of horizontal polarization and vertical polarization is collected at a time through the dual-linear polarization horn antenna, and the directional diagram, the axial ratio and the gain of the antenna can be synchronously calculated in combination with a calibration method. According to the invention, the problems of low efficiency and tedious operation of the traditional test method are solved, the full-automatic rapid test of the radiation performance of the multi-beam and multi-frequency-point circularly polarized antenna is realized, and the test efficiency and precision are significantly improved.

The invention discloses an ultra-wide beam antenna based on multi-magnetic-current superposition, and belongs to the field of microwave communication. The technical problems that an existing wide-beam antenna is limited in beam coverage range, and vertical polarization and end radiation cannot be considered at the same time are solved. The antenna comprises a top-layer metal structure, a dielectric substrate, a bottom-layer metal structure and a metalized through hole which are stacked in sequence, and the antenna is integrally in bilateral symmetry and integrates a single-ended short-circuit double-sided resonator, a double-ended open-circuit double-sided resonator, a pair of double-ended short-circuit double-sided strip-shaped resonators and a grounded coplanar waveguide transmission line. Through feed excitation of the grounding coplanar waveguide transmission line, the three resonators respectively generate clockwise semicircular magnetic current, front and back bidirectional semicircular magnetic current and vertical magnetic current, and superposing of multiple magnetic currents realizes ultra-wide wave beam vertical polarization end radiation. The antenna has the advantage of extremely wide beam width, and can give consideration to both vertical polarization and end radiation.

The invention discloses a mechanical arm adaptive dual-polarization miniaturized Vivaldi antenna which comprises a horizontal polarization antenna printed board, a vertical polarization antenna printed board and a reflection floor. A director, an index gradual change slot line and a decoupling extension branch knot are printed on the bottom layer of a polarized antenna printed board, a fan-shaped microstrip line and a gradual change microstrip line are printed on the top layer of the polarized antenna printed board, and an index contour slot, a circular resonant cavity and a circular slot line resonant cavity are formed in the index gradual change slot line; the substrate supporting structure is formed by extending two printed board substrates and used for forming an air gap between the antenna and the reflection floor, and the two printed boards are arranged in a staggered mode through slotting. The reflection floor is provided with a slot and a hole which are respectively used for fixing the substrate supporting structure, installing bolts and routing coaxial cables. High-frequency gain is improved through the director, low-frequency impedance matching is optimized through the slotting technology, coupling interference of the metal mechanical arm is restrained by combining an air gap and a decoupling extension branch knot, and the dual-polarization characteristic is adapted to a complex electromagnetic environment.

The utility model provides a polarized antenna, comprising a first antenna substrate on which a horizontal polarized antenna array is arranged; the first edge of the second antenna substrate is connected with the second edge of the first antenna substrate, and a preset angle is formed between the first antenna substrate and the second antenna substrate; and a dual-polarized antenna array is arranged on the second antenna substrate. The polarized antenna is installed on an antenna holding pole beside a track or a building, so that the second antenna substrate is right opposite to the track or the building, a wave beam formed by the dual-polarized antenna array correspondingly covers an area at a small incident angle, and a polarization diversity effect is reserved in an area where vertical polarized waves have good penetrability. The first antenna substrate is correspondingly arranged on the side face of the antenna holding pole, a wave beam formed by the horizontal polarization antenna array corresponds to a coverage area at a large incidence angle, and horizontal polarization has better projectability compared with vertical polarization, so that the problem that a part of energy is wasted due to the fact that vertical polarization components of the antenna are reflected is solved.

A vehicle unit installable and usable in a vehicle, includes, at least one vehicle antenna transmitting and receiving a high-frequency signal, which is a signal carried on a high-frequency radio wave, and the vehicle antenna includes, a vertically polarized wave antenna capable of transmitting and receiving a polarized wave orthogonal to a target surface, which is a metal surface at a predetermined part of the vehicle, and first and second horizontally polarized wave antennas each capable of transmitting and receiving polarized waves that are horizontal to the target surface and mutually orthogonally polarized.