75 results about "Antenna polarization" patented technology

The invention discloses an antenna control method and device and electronic equipment, and relates to the field of multimode cooperative communication, and the method comprises the steps: analyzing the characteristics of the environment around an antenna, generating an optimal polarization strategy in combination with a characteristic analysis result and a polarization switching prediction algorithm, transmitting a test signal through an antenna array controller, and recording a channel impulse response, time inversion processing is carried out on the channel impulse response, a time inversion signal and a phase compensation parameter are combined to generate a reverse emission signal, the reverse emission signal is reemitted, an optimal polarization strategy is combined to adjust the polarization state of each array element, a beam forming parameter set is generated, and the phase and amplitude of antenna equipment are adjusted through a controller. And monitoring signal strength and transmission efficiency, and generating a signal transmission performance data report. The antenna polarization switching method and device solve the technical problems that an antenna polarization switching algorithm cannot adapt to a dynamic electromagnetic environment and a multipath effect, the stability is insufficient, the signal strength is unstable, and the communication quality is affected in the related technology.

The invention discloses a reflective array antenna control method and system based on a broadband dual-polarization unit, and the method comprises the steps: obtaining a target wave beam pointing instruction, and carrying out the orthogonal decomposition of the target wave beam pointing instruction into a first polarization control vector and a second polarization control vector; calculating a theoretical phase frequency spectrum of each unit according to the polarization control vector; calling a preset database to extract a basic phase spectrum; quantitative mapping is carried out by calculating a matching error between a theory and a basic phase frequency spectrum, a phase control code containing the first polarization and the second polarization is obtained and loaded to a corresponding broadband dual-polarization unit to drive the switching of a physical state of the broadband dual-polarization unit, and real-time reconstruction of a wave beam is realized. Compared with the prior art, the antenna can overcome the defects that a traditional reflective array antenna is serious in polarization component coupling, low in phase matching degree in a broadband range and inaccurate in phase control code acquisition, and remarkably enhances the independent pointing precision and the full-band gain stability of dual-polarization beams. Therefore, flexible reconstruction of the wave beam in polarization and frequency dimensions is realized.

The invention relates to the technical field of communication, and provides an antenna polarization mode switching circuit, a switching method, a storage medium and a program product, the antenna polarization mode switching circuit comprises a control unit, a radio frequency system and a polarization switching module; one end of a first double-pole double-throw switch in the polarization switching module is connected with a single-pole three-throw switch, and the other end of the first double-pole double-throw switch is connected to an electric bridge; the other end of the bridge is connected to the second double-pole-double-throw switch; the other end of the second double-pole-double-throw switch is respectively connected to two feeding points of the dual-polarized antenna; the radio frequency system is connected to the first double-pole double-throw switch or any one of the two feeding points of the dual-polarized antenna through the single-pole three-throw switch, and is used for receiving an antenna signal or transmitting a radio frequency signal; and the control unit is used for outputting a control signal to the switch in the polarization switching module so as to realize polarization mode switching of the dual-polarized antenna by switching the connection state of the switch. Through the antenna polarization mode switching circuit, the communication effect between the two wireless communication devices can be guaranteed.

The invention provides a solar energy-radio frequency energy dual-driven low-altitude polarization switching dynamic power management system, and relates to the technical field of low-altitude flight. The system integrates a high-efficiency solar energy collection unit and a radio frequency energy collection unit with dynamic polarization adaptive switching capability, is assisted by a high-performance hybrid energy storage unit, and carries out unified coordination control through an intelligent power management unit. The radio frequency energy collection unit adopts a reconfigurable antenna technology, can sense the polarization characteristic of an environment radio frequency signal in real time, and dynamically switches the polarization state of an antenna to maximize the instantaneous energy capture efficiency; the intelligent power management unit executes a dynamic and collaborative energy flow scheduling strategy based on comprehensive analysis of solar irradiance, environment radio frequency spectrum and polarization characteristics, energy storage unit state, future energy income and expenditure prediction and real-time load demand; and the energy self-sustaining capability, the task endurance time and the working stability of low-altitude equipment in a complex and changeable environment are improved.

The invention relates to the technical field of antenna detection, and particularly discloses an antenna polarization performance test system, which comprises a dual circularly polarized antenna unit, a phase-adjustable polarization synthesis network unit, a control unit and electromagnetic wave measurement equipment which are connected in sequence, the electromagnetic wave measuring equipment serves as a signal source and a receiver and is connected with the phase-adjustable polarization synthesis network unit and the tested antenna respectively; the control unit controls the on-off or phase shift of the phase-adjustable polarization synthesis network unit to realize three-group state switching or polarization direction change of radio frequency signals, namely online polarization, left-hand circular polarization and right-hand circular polarization; and the electromagnetic wave measurement equipment measures the amplitude and phase of the radio frequency signal received by the measured antenna or the transmitted radio frequency signal to obtain the polarization performance of the measured antenna. When the antenna axial ratio polarization performance test is carried out, a turntable is not needed, so that the test error caused by rotation is reduced; and switching between linear polarization and circular polarization is realized, directional diagram, EI RP and G / T tests are realized, and the test efficiency is improved.

The invention belongs to the technical field of time modulation arrays, and relates to a direction and polarization joint estimation method based on a time modulation array, which comprises the following steps: establishing an alternating polarization time modulation array, obtaining a receiving signal of each array element, a time modulation function and a polarization vector of each array element, and further obtaining an actual receiving signal of each array element, establishing a linear relation among a harmonic component, a polarization parameter and an incident direction of a received signal of each sub-array; according to the linear relation, the relation between direction disturbance and direction function disturbance is obtained, a vector formed by subarray harmonic components is rewritten into a form containing a noise item, error disturbance between a truth value of a direction function and a corresponding estimator is obtained, and then a direction estimation value is obtained; according to the linear relation, the relation between the polarization matching coefficient of the array manifold vector estimation value and antenna polarization and radiation source polarization is obtained, and then the polarization estimation value is obtained. According to the invention, joint estimation of direction and polarization can be realized.

Example embodiments relate to frequency selective structures for automotive radar. A system may include a frequency selective structure that is coupled to a radome and configured to optimize a desired band-pass for specific performance by one or more antennas. The frequency selective structure may comprise arrays of micro-wires forming a plurality of intersections and one or more patches positioned at one or more intersections of the plurality of intersections. In some cases, at least one patch of the one or more patches may be positioned with an offset relative to a corresponding intersection of the one or more intersections and the frequency selective structure has a rotational angle with respect to an antenna polarization of the one or more antennas. The frequency selective structure may be connected to a current source that can modify the temperature of the structure to melt rain or snow off the radome.

The invention belongs to the field of antennas, and particularly relates to a polarization selection electromagnetic protection circularly polarized antenna and a use method thereof. The polarization selection electromagnetic protection circularly polarized antenna comprises an antenna radiation unit which comprises a main radiation body and a plurality of current coupling perturbation structures arranged on the main radiation body; the polarization control and protection unit comprises at least two groups of protection structures and control elements corresponding to the protection structures; the two groups of protection structures are respectively arranged corresponding to two orthogonal polarization directions of the antenna and are selectively connected with the main radiator through the control element; the multi-feed network comprises a plurality of feeds which are connected according to a preset phase difference relation and is used for exciting the antenna radiation unit to generate circularly polarized radiation waves; according to the circularly polarized antenna provided by the invention, the connection state of a protection structure is switched through a passive control element under high-power microwave incidence, and the polarization characteristic of the antenna is dynamically reconstructed, so that polarization selective protection is realized and the communication capability is kept under strong electromagnetic attack.

The present invention provides an Internet of Things wireless transmission method based on a dynamic arbitrary polarization antenna, which belongs to the field of wireless network technology and includes the following steps: a master station finds a slave station to be established for communication by adjusting the antenna polarization direction, and sends a handshake signal to establish communication; after communication is established, the master station periodically sends a judgment signal to the slave station, receives a feedback signal from the slave station, and judges whether the slave station needs to adjust the antenna polarization direction based on the polarization signal quality CQI result of the feedback signal; the slave station judges based on the judgment signal that when the antenna polarization direction needs to be adjusted, switches, and calculates CQI data and feeds it back to the master station. The present invention uses an antenna with adjustable polarization direction, combined with baseband processing and signaling protocol, to enable the master station and the slave station to perform adaptive polarization direction switching, thereby ensuring a reliable, stable and fast communication state.

This application provides an RFID tag, comprising an RFID chip and an antenna body. The antenna body includes an impedance matching network and a radiator, and the RFID chip is connected to the impedance matching network. The impedance matching network is formed by parallel impedance matching units and is connected to the radiator. The radiator has a hollow design. Based on the parallel impedance matching network and the gap between the impedance matching network and the radiator, the polarization direction of the RFID tag is vertical. This application's RFID tag, by changing the antenna structure, achieves a vertical antenna polarization direction, realizing a 90° polarization direction reversal compared to the conventional dipole antenna, thus improving the RFID tag's performance.

The application discloses a polarization-sensitive wide-angle matching structure and an ultra-wideband wide-scan-angle low-standing-wave tight-coupling antenna. The polarization-sensitive wide-angle matching structure comprises a first polarization-sensitive structure medium substrate, a first polarization-sensitive structure, a second polarization-sensitive structure medium substrate, a second polarization-sensitive structure, a third polarization-sensitive structure, an isolation layer and a wide-angle matching layer. The application adopts three layers of wide-angle matching structures with different shapes along the E plane and the H plane of the antenna, can improve the impedance matching conditions in two scanning directions according to different impedance change rules when the tight-coupling array is scanned along the E plane and the H plane, and realizes a lower active standing wave under a large scanning angle.

The invention provides an antenna feed control method and circuit, and belongs to the technical field of wireless communication, and the method comprises the steps: receiving a signal intensity ratio and a first phase difference between received signals of two feed points of an antenna, and enabling the two feed points to receive one vertical component of an external signal respectively; determining a power distribution proportion and a second phase difference between the transmitting signals of the two feeding points according to the signal strength proportion and the first phase difference, the power distribution proportion being the same as the signal strength proportion, and the first phase difference being opposite to the second phase difference; and using the feed network to control the transmitting power of the two feed points according to the power distribution proportion, and controlling the transmitting phases of the two feed points according to the second phase difference. According to the invention, the external signal is disassembled into the two vertical components, the transmission signals of the two antenna units are dynamically controlled by using the feed network according to the analysis result of the two vertical components, the signal matched with the external signal is synthesized, and the polarization loss of the antenna between the two devices is always kept to be the lowest.

The invention provides a performance optimization method of a rectangular horn antenna and the rectangular horn antenna, and the performance optimization method comprises the steps: firstly adding a matching section, designing the matching end of the horn antenna into a multi-step structure, achieving the effect of reducing the side lobe of an E surface, then adjusting the length of a third step to change the phase difference between a TM12 mode and a TM10 mode, and achieving the effect of reducing the side lobe of the E surface. The side lobe is further reduced, and the ridge of the inner circumferential wall of the field angle radiation section is chamfered to suppress cross polarization. On the premise of keeping the inherent advantages of simple structure, convenience in processing, broadband operation and the like to the greatest extent, the radiation characteristics of the antenna are optimized in a collaborative manner fundamentally, and particularly, troubling D-plane cross polarization is effectively inhibited, and the side lobe level is reduced; therefore, the extreme requirements of a next-generation high-performance communication system on antenna polarization purity and directional diagram quality are met.

The application provides an antenna feed control method and circuit, and belongs to the technical field of wireless communication. The method comprises the following steps: receiving a signal strength ratio and a first phase difference between received signals of two feed points of an antenna, wherein the two feed points respectively receive one vertical component of an external signal; determining a power distribution ratio and a second phase difference between transmitted signals of the two feed points according to the signal strength ratio and the first phase difference, wherein the power distribution ratio is the same as the signal strength ratio, and the first phase difference is opposite to the second phase difference; and controlling the transmission power of the two feed points according to the power distribution ratio and the transmission phase of the two feed points according to the second phase difference by using a feed network. The application decomposes the external signal into two vertical components, and dynamically controls the transmission signals of the two antenna units by using the feed network according to the analysis results of the two vertical components, so as to synthesize a signal matched with the external signal, and always keep the antenna polarization loss between the two devices at a minimum.

The application relates to a polarization reconfigurable antenna based on a substrate integrated waveguide and an artificial surface plasmon, and belongs to the technical field of antennas. The application aims to solve the problems of fixed polarization characteristics of a traditional antenna, low gain of an existing polarization reconfigurable antenna, and limited beam scanning angle of a leaky-wave antenna. The antenna comprises two groups of 45-degree linear polarization antenna units (SSPP units constructed based on a SIW resonant cavity and a periodic 45-degree rectangular slot) arranged orthogonally and a power divider with a 90-degree phase difference. The power divider is selectively driven to work by controlling the switching state of PIN diodes. By controlling the state of the diodes, dynamic switching of +45-degree linear polarization, -45-degree linear polarization and right-handed circular polarization can be realized. Meanwhile, the antenna has high gain (up to 14.7dBi) and a beam scanning capability of about 43 degrees within a frequency range of 11.5-14.5GHz, and is suitable for wireless communication, radar systems and unmanned aerial vehicle detection.

Disclosed in embodiments of the present disclosure is a communication method and device. The method performed by a terminal device includes: determining antenna polarization information, wherein the antenna polarization information is configured for indicating a time pattern corresponding to an antenna polarization mode of a network device; and determining a communication transmission mode according to the antenna polarization information and an antenna polarization mode of the terminal device.

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 invention discloses an anti-multipath interference compact constant beam GNSS antenna, which comprises a turbine cavity and a support medium arranged in the turbine cavity, and is characterized in that the support medium is provided with a radiation unit and a plurality of coupling feed sheets; wherein the turbine cavity comprises a metal mounting flange and a first reflection area and a second reflection area which are arranged on the metal mounting flange, the first reflection area is located in the second reflection area, the radiation unit and the plurality of coupling feed sheets are located in the first reflection area, the first reflection area is composed of a plurality of first spacers, and the second reflection area is composed of a plurality of second spacers. The second reflection area is composed of a plurality of second spacers, gaps exist between every two adjacent first spacers and between every two adjacent second spacers, the height of the second spacers is larger than that of the first spacers, a turbine structure is further arranged on one side of the second reflection area, and the rotation direction of the turbine structure is consistent with the polarization direction of the antenna. And a broadband power division phase shift network is arranged in the metal mounting flange. According to the invention, cross polarization of the antenna can be effectively suppressed, and the anti-multipath interference capability of the antenna is improved.

The invention discloses a wearable antenna, which relates to the technical field of antennas and comprises a low-frequency directional antenna. A carrier of the low-frequency directional antenna is a dielectric shell; the outer surface of the dielectric shell is provided with four lower vibrators which are tightly attached to the outer surface of the dielectric shell, the four lower vibrators are arrayed circumferentially along the center of the dielectric shell, and two opposite lower vibrators form a pair; a top cover and two soldering lugs are arranged at the top of the dielectric shell, and the soldering lugs are located in a cavity formed by the top cover and the dielectric shell; the two soldering lugs correspond to the two pairs of lower oscillators respectively; the shielding nets of the two radio frequency cables A are respectively connected with two adjacent lower oscillators; an inner conductor of the radio frequency cable A is connected with a soldering lug, and the other end of the soldering lug is connected with the other lower oscillator of the same pair of lower oscillators; the two soldering lugs are crossed and are isolated by a dielectric film A; a metal layer is attached to the top of the top cover. According to the invention, the application of the antenna polarization mode is increased, and the omnidirectional and directional antenna modes are switched, so that the application scene of the antenna can be expanded.

The present invention relates to a reflective ground satellite communication portable station, comprising: a housing, one side of which is provided with a component mounting cavity; a heat dissipation cold plate disposed in the component mounting cavity; an antenna control assembly disposed on a side of the heat dissipation cold plate adjacent to the housing; an antenna cover rotatably connected to the heat dissipation cold plate; a polarization cover disposed on a side surface of the antenna cover adjacent to the heat dissipation cold plate; a polarization grid disposed on the polarization cover; an antenna array disposed in the antenna array surface mounting cavity between the antenna cover and the heat dissipation cold plate, comprising a passive antenna array and a phase shifter; a feed assembly comprising a polarizer, a feed rod, and a feed source, the polarizer penetrating the antenna cover and being fixedly connected to the heat dissipation cold plate. The present invention enables switching of antenna polarization modes by rotating the antenna cover and the polarization cover; the antenna array and the phase shifter are integrally integrated on the heat dissipation cold plate within the housing, thereby achieving lightweight and integrated portable station, thereby improving the portability of the communication station.

The application belongs to the technical field of time modulation array, and relates to a direction and polarization joint estimation method based on a time modulation array, which comprises the following steps: establishing an alternating polarization time modulation array, obtaining the received signal of each array element, a time modulation function and the polarization vector of each array element, then obtaining the actual received signal of each array element, and establishing a linear relationship among the harmonic component of each subarray received signal, a polarization parameter and an incident direction; according to the linear relationship, obtaining the relationship between the direction disturbance and the direction function disturbance, rewriting the vector formed by the subarray harmonic component into a form containing a noise term, obtaining the error disturbance between the true value of the direction function and the corresponding estimation quantity, and then obtaining the estimation value of the direction; according to the linear relationship, obtaining the relationship between the polarization matching coefficient of the array manifold vector estimation value and the antenna polarization and the polarization of the radiation source, and then obtaining the estimation value of the polarization. The application can realize joint estimation of the direction and the polarization.

This invention relates to the field of RFID antenna system technology and discloses a planar RFID antenna, comprising a processor, a transceiver module, and an RFID tag module. The RFID tag module includes a second transceiver module, a first radiating module, and a signal integration module. The first transmitting module is used to output a radio frequency signal of a certain frequency to the RFID tag antenna via an RFID reader. The first radiating module is used to radiate the acquired radio frequency signal power in the form of electromagnetic waves. The conductors in the first radiating module are arranged with two conductors spread apart by 180°. A planar array of multi-radiating plates is provided in the first radiating module to spread the electric field in the surrounding space and enhance the radiation of electromagnetic waves. The antenna of this invention enhances and radiates the radio frequency signal, improves the received frequency ratio by using an attached enhancing antenna, and matches the antenna polarization function with the interrogation signal of the reader as much as possible.

The invention belongs to the technical field of new energy automobiles, and particularly relates to a new energy automobile energy collection and charging optimization system and a charging optimization method.The new energy automobile energy collection and charging optimization system comprises a radio frequency energy capture module, a hub electromagnetic power generation system, a vibration / waste heat recovery system, an intelligent charging system, a battery management system and a millimeter wave radar fusion module; a PTP protocol is adopted to realize time synchronization, DBSCAN clustering and a Kalman filtering algorithm are adopted to process radar point cloud data, a Q-learning reinforcement learning model is combined to optimize an antenna polarization angle, and a genetic algorithm is adopted to dynamically select a frequency band; by innovating key links such as energy collection, charging and battery management, efficient collection and utilization of energy of the new energy automobile are achieved, the charging efficiency and stability are improved, the battery state is accurately managed, the adaptability of the automobile in the complex electromagnetic environment is enhanced, and the overall performance and market competitiveness of the new energy automobile are improved.

The utility model discloses a radar antenna polarization switching device, which comprises a shell, a waveguide tube rotatably supported on the shell, a dielectric sheet fixedly connected in the waveguide tube, a single-phase asynchronous motor, a coupler, a worm and gear transmission assembly, a gear transmission assembly and a microswitch sensing assembly, the microswitch induction assembly comprises an induction sleeve arranged outside the waveguide tube in a sleeving mode, a first protrusion and a second protrusion are arranged on the periphery of the induction sleeve, the microswitch induction assembly further comprises a first microswitch and a second microswitch, and the first microswitch and the second microswitch are arranged on the shell. When the dielectric sheet in the waveguide tube rotates to a first corner position, the first protrusion triggers the first microswitch to send out a motor stop signal, and when the dielectric sheet in the waveguide tube rotates to a second corner position, the second microswitch is triggered to send out a motor stop signal. The device is low in cost, high in reliability and good in maintainability.

The present invention provides a broadband dual-polarization base station filter antenna with high-frequency out-of-band suppression characteristics, which is used to solve the technical problems of existing antennas, such as the increase in antenna size and the introduction of transmission loss due to the introduction of a filter-like structure in the feeder, and the single polarization type and narrow operating bandwidth of most antennas. In the antenna of the present invention, four first metal patches on a first dielectric substrate respectively form horizontal polarization and vertical polarization, and the metal coupling patch on the first dielectric substrate is used to generate coupling with the first metal patch; four second metal patches on a second dielectric substrate are respectively connected to the first metal patch to form four 1 / 4 wavelength three-dimensional folded dipole arms; the upper end of the metal column is connected to the corresponding metal coupling patch, and the lower end is suspended; the feeding structure is vertically connected between the metal substrate and the first metal patch, and is used to transmit microwave signals to the four 1 / 4 wavelength three-dimensional folded dipole arms.

A radio frequency identification (RFID) reader is disclosed. The RFID reader includes at least one antenna configured to transmit a plurality of radio frequency (RF) signals to at least one RFID tag. The RFID reader further comprises at least one processor and at least one non-transitory memory, the at least one non-transitory memory comprising computer program code, the at least one non-transitory memory and the computer program code are configured to, with the at least one processor, cause the RFID reader to: determine a plurality of parameters associated with the RFID reader based on the transmitted plurality of RF signals; determining an effective isotropic radiation power (EIRP) of the RFID reader based on the plurality of parameters; comparing the EIRP with a threshold value; and switching the polarization of the at least one antenna from the first polarization to the second polarization based on the comparison.

The invention belongs to the technical field of wireless communication, and particularly relates to a wireless communication system of a vehicle-mounted 5G Bluetooth antenna, which can effectively maintain the polarization direction and communication quality of the antenna by sensing tiny deformation of a vehicle body in real time and adjusting antenna parameters according to the deformation. And a stable wireless communication service can be provided even in a high-speed driving or complex environment. Therefore, the reliability and the user experience of the vehicle-mounted wireless communication system can be obviously improved. The system not only has traditional functions, but also particularly introduces an environment monitoring module, a deformation compensation module and a polarization adjustment module. By integrating the modules, the problem that the prior art is not fully paid attention to is solved, namely how to keep the stability of the polarization characteristic of the antenna in the running process of the vehicle, so that high-quality wireless communication is ensured. The improvement enables the system to maintain optimal communication performance under various driving conditions.

The present invention discloses an antenna control method and device, and electronic equipment, relating to the field of multi-mode cooperative communication. The method comprises: analyzing environmental characteristics around the antenna, combining the characteristic analysis results with a polarization switching prediction algorithm to generate an optimal polarization strategy, transmitting a test signal through an antenna array controller and recording a channel impulse response, performing time reversal processing on the channel impulse response, combining the time reversal signal and a phase compensation parameter to generate a reverse transmission signal, retransmitting the reverse transmission signal, and adjusting the polarization state of each array element in combination with the optimal polarization strategy to generate a beamforming parameter set, adjusting the phase and amplitude of the antenna device through a controller, monitoring the signal strength and transmission efficiency, and generating a signal transmission performance data report. The present invention solves the technical problem in the related art that the antenna polarization switching algorithm cannot adapt to dynamic electromagnetic environments and multipath effects, lacks stability, leads to unstable signal strength, and affects communication quality.

The application relates to the technical field of communication, and provides a detection device for the polarization mode of a base station antenna, which comprises a signal generator, a base station antenna radio frequency instrument electrically connected with the signal generator, at least one detection mechanism, the detection mechanism comprising a detection component and at least one radiation probe, the radiation probe being arranged opposite to a base station antenna radiation element along a polarization direction of the base station antenna radiation element, the detection component being electrically connected with the radiation probe and used for representing a detection result, and the working frequency band of the radiation probe being greater than or equal to the working frequency band of the base station antenna radiation element. The detection device for the polarization mode of the base station antenna can quickly judge whether the polarization direction of the base station antenna radiation element is correct, the testing principle is simple, the cost is low, the polarization mode of the antenna can be effectively controlled, the working strength of workers is reduced, and the production efficiency is improved.

The present invention relates to a gantry-frame gimbal for antenna testing and a control method thereof. The gimbal comprises a base, an azimuth control motor, a roll control motor, a gantry, a pitch control unit disposed below the gantry, and an antenna mounting unit disposed on the pitch control unit. The antenna mounting unit comprises an antenna polarization direction control motor, a central axis, and an antenna mounting base. The gimbal of the present invention utilizes an azimuth-pitch control mode during the ascent and descent phases of a drone's vertical semicircular flight, and a roll-pitch control mode during the overhead phase, with smooth switching of control modes during the transition phase. The present invention utilizes a gantry-frame gimbal to resolve the problem of existing drones' directional test antennas being unable to consistently align with a target during vertical semicircular flight. This allows the test antenna to more accurately point to the target being tested while maintaining its polarization direction. During the overhead phase, singularity issues can be avoided.