142 results about "Antenna gain" patented technology

The present disclosure relates to an antenna apparatus, and more particularly, to an antenna apparatus including a plurality of low-band elements that radiate an operating frequency in a first frequency band, and a plurality of mid-band elements that radiate an operating frequency higher than the operating frequency in the first frequency band. Among the plurality of mid-band elements, mid-band elements that interfere in a radiation direction in relation to the low-band elements are disposed to penetrate centers of the low-band elements, thereby providing an advantage of securing favorable antenna gain.

The application relates to the technical field of V2X antennas, in particular to a V2X antenna structure which comprises a first radiation unit, a second radiation unit and a radiation slot unit; the first radiation unit comprises a first radiation branch, a second radiation branch and a feeding branch; the second radiation unit comprises a third radiation branch and a fourth radiation branch; the radiation slot unit is formed by the first radiation branch, the second radiation branch and the fourth radiation branch; and a radio frequency coaxial line comprises an outer conductor and an inner conductor. Compared with the prior art, the application has the advantages that the antenna has good performance on metal surfaces and non-metal surfaces, has the characteristics of small size and low profile, can be applied to metal surfaces, has high antenna gain, is simple to manufacture, has excellent performance, is convenient to install and use, and is easy to popularize.

The invention provides a curved surface polarization torsion reflecting surface and an antenna using the same, and belongs to the technical field of antennas. The curved surface polarization torsion reflection surface comprises a curved surface dielectric plate, and a metal bottom plate and an electromagnetic metasurface which are respectively arranged on the outer side and the inner side of the curved surface dielectric plate; the electromagnetic metasurface is formed by periodically arranging a plurality of single-layer electromagnetic metasurface units. The single-layer metasurface unit with the polarization torsion function is conformal on the curved surface, so that the technical problems that a traditional multi-layer planar polarization torsion structure is complex to process, curved surface conformal is difficult, and the performance is deteriorated after conformal are solved. The reflecting surface is preferably a paraboloid, so that the incident wave polarization torsion is realized, and the spherical wave can be converted into the plane wave to improve the antenna gain. The metasurface unit keeps good cross polarization reflection performance within the wide incidence angle range of 0-40 degrees, is suitable for curved surface conformal design, can be integrally formed through 3D printing, and is easy and convenient to machine and stable in performance.

The present invention relates to the technical field of wireless communications, and specifically discloses an adaptive transmission method and user equipment for a CDD mode in a V2X communication technology, where the user equipment comprises an antenna module at least comprising a first antenna and a second antenna. The method comprises the following steps: user equipment acquires SNR values of two antennas, responds to the difference of the SNR values of the antennas, adaptively adjusts the transmitting power of the antennas according to a preset transmitting power allocation table, and realizes the comprehensive advantage characteristics of CDD and TxD modes even if only hardware supporting the CDD mode exists, thereby achieving the purpose of increasing the antenna gain in a specific scene.

The application provides a kind of satellite-borne GNSS phased array antenna gain stability on-orbit monitoring method, system, the method comprises: obtaining the real-time position information of detection equipment and the beacon position information of beacon source;According to real-time position information and beacon position information, it is judged whether beacon source enters the gain monitoring range of detection equipment;If yes, then the beacon signal sent by the beacon source is tracked by GNSS phased array antenna, and the tracking result is obtained, and GNSS phased array antenna is installed on detection equipment;Based on tracking result, real-time monitoring is carried out on GNSS phased array antenna.The problem that GNSS phased array antenna cannot be monitored in subsequent orbit after being installed on detection equipment and put into operation in the prior art is solved, and because the entire antenna gain monitoring process is carried out in the actual application environment, the gap between the ground darkroom environment and the actual application environment can be reduced, and the influence of the performance change of the receiving antenna on the measurement result is reduced, to ensure the reliability and accuracy of the measurement result.

This invention discloses an electric dipole Yagi antenna, comprising a dielectric substrate and a magnetically coupled metal structure. The top surface of the dielectric substrate is provided with an electric dipole driver, a reflector, and multiple parasitic antenna elements. The reflector is located on one side of the electric dipole driver, the magnetically coupled metal structure is located on the other side of the electric dipole driver, and the parasitic antenna elements are located on the side of the magnetically coupled metal structure away from the electric dipole driver. The electric dipole Yagi antenna has a novel structure, utilizing a magnetically coupled metal structure to replace the parasitic antenna elements closest to the electric dipole driver. This significantly improves the antenna gain without changing the original size of the electric dipole Yagi antenna, making it particularly suitable for applications with limited space.

The application discloses a wireless data communication terminal device of a power system and a Web terminal operation method, and relates to the technical field of terminal devices. The wireless data communication terminal device of the power system comprises a terminal machine, a support leg and an antenna assembly. The bottom of the terminal machine is provided with a frame body capable of fixing the terminal machine to a plane position. The support leg is arranged at the bottom of the terminal machine and forms support for the bottom of the terminal machine. The antenna assembly is installed at the top of the terminal machine and comprises two states of unfolding and shrinking. A heat dissipation module is arranged in the terminal machine. The opening and closing of the air inlet of the heat dissipation module are controlled by the unfolding and shrinking states of the antenna assembly. A wireless communication module is arranged in the terminal machine and connected to the terminal machine. The application adjusts the angle position of the antenna arranged in the communication terminal device, can realize antenna gain in a corresponding range, and can obtain more stable data transmission effect in the process of main data interaction.

The invention discloses an ultra-wideband small radio frequency antenna for PE pipe detection, and relates to the technical field of antennas. The antenna comprises an insulating medium substrate and a radiation structure arranged on the front surface of the insulating medium substrate. The radiation structure comprises a main radiation patch formed by an index gradual change slot line, an annular patch arranged at an interval with the tail end of the main radiation patch, and a strip-shaped patch arranged at an interval with the annular patch. The resistor element comprises a first resistor, a second resistor and a third resistor, and the main radiation patch is connected with the annular patch through the first resistor; a radiation part of the antenna forms a specific resistance loading network through a radiation structure and a resistance element, and a slot line feed structure feeds energy, so that resonance with lower frequency can be effectively excited, and the low-frequency cut-off frequency of the antenna is reduced, which is crucial for detecting a deep target; therefore, the input impedance of the antenna is very stable in the whole ultra-wideband, the energy transmission efficiency is ensured, and the gain and efficiency of the antenna are gradually increased.

A link reachability determining method to enable a multi-link device to determine whether a link is reachable in an uplink direction, includes: a multi-link STA receives a first frame sent by a multi-link AP on a first link, where the first frame includes transmit power and antenna gain information of each AP of the multi-link AP; and then, the multi-link STA determines, based on the first frame, whether each of M links supported by the multi-link STA is reachable in an uplink direction.

A high-gain millimeter wave antenna structure and a millimeter wave antenna module. The high-gain millimeter wave antenna structure includes a first reflective plate, a second reflective plate and a millimeter wave antenna module disposed between the first and the second reflective plates. When the millimeter wave antenna module is configured to provide an original millimeter wave signal, the original millimeter wave signal provided by the millimeter wave antenna module is reflected by the first and the second reflective plates in sequence to form an operating millimeter wave signal transmitted in a same predetermined direction. Therefore, an operating antenna gain of the operating millimeter wave signal provided by the cooperation of the millimeter wave antenna module, the first reflective plate and the second reflective plate is greater than an original antenna gain of the original millimeter wave signal provided by the millimeter wave antenna module.

This invention relates to the field of aircraft antenna technology, and discloses a low-tilt, wide-beam, high-gain, low-profile aircraft antenna, comprising a rectangular waveguide body, a radiating aperture, a beam modulation control, and a protective structure. The radiating aperture is the open end of the rectangular waveguide body, the beam modulation control is located at the radiating aperture, and the protective structure covers the rectangular waveguide body and the radiating aperture. The rectangular waveguide body is a highly compressed structure. This invention solves the problems of high beam tilt, narrow beamwidth, and low antenna gain commonly used in microstrip antennas for aircraft, and features low tilt, wide beam, high gain, and low profile, which can greatly improve the widespread use of low-tilt, wide-beam, high-gain, low-profile antennas in various aircraft.

The application discloses a kind of ultra-wideband small radio frequency antennas for PE pipe detection, it is related to antenna technical field;The application includes insulating dielectric substrate and the radiation structure of setting in insulating dielectric substrate front, the radiation structure includes the main radiation patch of being formed by exponential gradually changing slot line, ring patch is arranged at the end of main radiation patch interval, and strip patch is arranged at interval with ring patch;Resistance element includes first resistance, second resistance and third resistance, and main radiation patch is connected with ring patch by first resistance;The radiation part of the antenna of the application forms specific resistance loading network by radiation structure and resistance element, slot line feed structure feeds energy, and can effectively stimulate lower frequency resonance, reduce the low frequency cutoff frequency of antenna, which is crucial for detecting deep targets, so that the input impedance of the antenna is very stable throughout the ultra-wide frequency band, ensuring energy transmission efficiency, antenna gain and efficiency are gradually increased.

This invention provides a communication method, apparatus, program product, and storage medium, relating to the field of communication technology, to address the shortcomings of high system overhead in existing technologies. The method includes: receiving information from at least one serving terminal, the information of which includes the location information and receiving antenna gain of the serving terminal; receiving first information, the first information including information from at least one interfering terminal of a neighboring satellite, the information of which includes the location information and receiving antenna gain of the interfering terminal; generating precoding vectors corresponding to each serving terminal based on the satellite information, the information of the at least one serving terminal, and the first information; and transmitting signals to the corresponding serving terminals based on the precoding vectors.

The invention belongs to the technical field of low-altitude radar antenna gain, and discloses a low-altitude surveillance radar X-band antenna gain estimation method and system, and the method comprises the steps: collecting the phase distribution of a radiation unit, the standing-wave ratio of a feed network and other microscopic parameters, and building a correlation model of the microscopic parameters with a mesoscopic multipath signal and macroscopic scene complexity; a transition area correction factor iterator is introduced, temperature compensation, frequency compensation and a multi-level loss correction process are combined, and errors of temperature drift and frequency deviation of the 10-12 GHz frequency band are counteracted; the accuracy of gain estimation in a complex low-altitude environment is improved; constructing a three-dimensional adaptive matrix of the RCS, the maneuvering acceleration and the target type, and forming a three-dimensional correction system in combination with the environment complexity dimension; in a multi-target scene, computing resources are distributed according to the logic that the smaller the RCS is, the larger the maneuvering acceleration is and the higher the priority is, the targets are processed in batches by adopting a time division multiplexing architecture, and the contradiction between the gain response lag of the X-band antenna and the fast maneuvering of the targets is relieved.

Disclosed is a method and system for interference control and hybrid beamforming using multi-agent deep reinforcement learning for multiple users. The disclosed method includes performing multi-agent reinforcement learning using interference and antenna gain information that is expected based on a gain table designed using channel state information (CSI) of all user equipments; searching for an analog beamforming matrix pair corresponding to a link that maximizes antenna gain and minimizes interference between user equipments through multi-agent reinforcement learning; applying a signal-to-leakage plus noise ratio (SLNR) maximization technique that minimizes the interference between the user equipments based on the link; and optimizing transmission (Tx) power for each link based on iterative water-filling.

The application provides a communication device, relates to the technical field of antennas, and is used for solving the problem of how to improve the antenna gain without interfering with the antenna modularization. Specifically, the communication device comprises an antenna and a wave dense medium. The wave dense medium is arranged in the transmission direction of the antenna and is spaced apart from the antenna. The dielectric constant of the medium located on the side of the wave dense medium close to the antenna and the dielectric constant of the medium located on the side of the wave dense medium away from the antenna are both smaller than the dielectric constant of the wave dense medium. The thickness D of the wave dense medium from the surface close to the antenna to the surface away from the antenna satisfies: 0.5nλg(1-10%)≤D≤0.5nλg(1+10%), wherein n=1, 2, 3... and λg is the resonant wavelength of the antenna operating frequency band in the wave dense medium. The communication device provided by the application is used for realizing the transmission and reception of electromagnetic wave signals.

This subject provides an RFID device configured to improve the gain and directivity of an antenna. [Solution] The RFID device comprises an antenna, a metamaterial (MTM) array, and a substrate. The substrate has a first surface and a second surface, and the antenna has a bottom surface and an top surface. The bottom surface of the antenna and the MTM array are formed on the first surface of the substrate. The antenna and the MTM array are separated by a gap. The antenna is formed of a first conductive material defining a region enclosed by a first boundary line. The antenna has nested slots. The MTM array is formed of a second conductive material defining a region enclosed by a second boundary line.

The application relates to a method for quickly obtaining the gain of an incident signal based on an antenna directional diagram. The method comprises the following steps: setting an antenna pointing angle; constructing an antenna horizontal plane axial vector and an antenna vertical plane axial vector according to the antenna pointing angle; constructing a signal transmitting vector or a signal receiving vector according to a signal transmitting angle or a signal receiving angle; calculating the included angle between the signal transmitting or receiving angle and the antenna vertical plane axial vector to obtain the zenith angle of the signal transmission or reception; calculating the elevation angle of the signal transmission or reception relative to the original antenna directional diagram according to the zenith angle; calculating the included angle between the signal transmitting or receiving angle and the antenna horizontal plane axial vector to obtain the azimuth angle of the signal transmission or reception; and searching for the corresponding gain value in a pre-constructed antenna directional diagram two-dimensional data model according to the elevation angle of the signal transmission or reception relative to the original antenna directional diagram and the azimuth angle of the signal transmission or reception. The method can solve the problem of quickly obtaining the antenna gain in simulation.

The invention discloses a miniaturized double-slot Vivaldi sum-difference beam antenna for target positioning and tracking. The miniaturized double-slot Vivaldi sum-difference beam antenna comprises a double-slot radiation patch, a dielectric substrate and two sum-difference microstrip feed structures, when the phases of the incident signals of the two ports are consistent, a difference beam is generated; and when the difference is 180 degrees, a sum beam is generated. Furthermore, in order to reduce the mutual coupling effect between the two ports, a trapezoidal structure (flow repression groove) is dug out at the most front end of the radiation patch, and a small quadrangular prism is dug out at the corresponding position of the dielectric substrate. Furthermore, the front end part of the dielectric substrate is extended downwards by 0.8 mm and is equivalent to a director, so that the antenna gain is improved. The size of the final antenna is 61 * 48.6 * 1.6 (mm < 3 >), the working bandwidth of the wave beam is 2.85-21GHz, the gain in the frequency band of 6-21GHz is greater than 8dBi, and a directional diagram has high symmetry. The difference beam working bandwidth is 4.35-20.85 GHz, the sidelobe level is low, the anti-interference capability is high, and the directional diagram has high symmetry. The method has great application value in the field of target tracking and positioning.

The application discloses a modular high-gain circularly polarized Vivaldi array antenna, which comprises edge antennas, middle antennas and a mounting base; the mounting base comprises a square metal plate printed with a feeding layer, four edge antennas and / or middle antennas are inserted into the square metal plate, and two edge antennas and / or middle antennas form an X-direction plane and a Y-direction plane perpendicular to each other, and a feeding seat is arranged in the center of the square metal plate; the edge antennas and the middle antennas are in a sheet structure and are composed of a bottom insertion structure and a top antenna structure, the bottom insertion structure comprises an insertion column and a wiring passage; a feeding balun is connected to a feeding source, and then the edge antennas and / or middle antennas in the same plane are connected to each other through the wiring passage to form Vivaldi antennas; the mounting base arrays are arranged to mount the antennas to form a Vivaldi array antenna, and the edge antennas are all edge antennas, and the other antennas are all middle antennas. The application can realize a modular circularly polarized Vivaldi array antenna, has a compact structure, and has strong antenna gain and expansibility.

An array accommodated in a housing includes multiple antenna elements. The antenna elements face an inside surface of the housing and are arrayed in a first direction at least one-dimensionally. A waveguide is coupled to the antenna elements of the array antenna and extends from the array antenna toward the inside surface of the housing. The waveguide has a housing-side end face facing the inside surface of the housing and an antenna-side end face facing the array antenna. A length from one end to an opposite end of the housing-side end face in the first direction is greater than a length from one end to an opposite end of the antenna-side end face in the first direction. An antenna device that can improve antenna gain without increasing the size of the antenna module is provided.

The invention relates to a signal enhancement method and system of a wireless smoke sensing device and the wireless smoke sensing device. The method comprises the steps that when it is monitored that the intensity of a wireless communication signal of the environment where the wireless smoke sensing device is located is smaller than or equal to a preset first intensity threshold value, whether the change of the intensity of the monitored wireless communication signal meets a preset signal enhancement condition or not is judged; the preset first intensity threshold value represents the signal intensity required by the wireless smoke sensing device in a stable operation state; and when the monitored change of the intensity of the wireless communication signal meets a preset signal enhancement condition, enhancing the antenna gain of the wireless smoke sensing device until the detected intensity of the wireless communication signal is greater than or equal to a preset first intensity threshold. By adopting the method, the problem that the fire alarm information transmission is delayed or failed when the use environment of the existing wireless smoke sensing device is changed can be solved.

The invention discloses a 5G network ultra-far coverage method, system and device for marine economy and a medium, and belongs to the technical field of wireless communication, and the method comprises the steps: building a geometric propagation relation based on the earth curvature according to the hanging height of an antenna and the height of a terminal device, and calculating a sight distance coverage distance through a geometric figure formed by a base station antenna, a terminal and the earth center; adaptively selecting a working frequency band according to the sight distance coverage distance and the service bandwidth requirement, determining an antenna gain requirement and a beam width requirement according to the wavelength characteristic of the working frequency band, and selecting an antenna; when a time division duplex system is adopted, the cyclic prefix length and the guard interval length are configured according to the propagation time delay so as to expand the coverage distance; and when the frequency of the working frequency band is relatively high, a multi-cell joint receiving and uplink channel quality enhancement technology is configured. According to the method, the sight distance coverage range is accurately calculated by establishing the geometric propagation model based on the earth curvature, and ultra-long-distance coverage of the sea area is realized through frequency band antenna collaborative optimization and frame structure parameter configuration.

This invention provides a method and system for locating partial discharge in substations based on a directional sensor array, comprising: Step S1: using an array of N directional antennas to receive and sample partial discharge signals from the partial discharge source to obtain a signal sequence x1, x2, ..., x N Based on the signal sequence x1,x2,…,x N Obtain the measurement matrix X; Step S2: Calculate the noise matrix E of the signal based on the measurement matrix X. n Step S3: Based on the antenna gain pattern function g(θ), according to the signal noise matrix E n The spatial spectral function P was calculated. mu (θ); Step S4: P is adjusted from 0° to 360°. mu (θ) performs a maximum search, where the angle corresponding to the maximum value is the directional angle of the local discharge source. This invention is based solely on signal strength information, has a fast calculation speed, does not have high sampling requirements, and has high directional accuracy. Furthermore, the directional antenna used is small in size, resulting in low equipment cost.

A capability information reporting method, a communication method, and a related apparatus. The terminal device determines the N groups of capability information. Each of the N groups of capability information includes at least one of the following: a rated output power, a power back-off amount, an antenna gain, an output power density, a type of an antenna in the terminal device, a maximum output power, a minimum output power, or an antenna capability level, and Nis an integer greater than or equal to 1. The terminal device sends the N groups of capability information to the network device.

A wide-band wave-transmitting / filtering radiation unit, a shared-aperture antenna array, and a communication device are disclosed. The radiation unit includes a radiation structure and a feed structure, where the radiation structure and the feed structure are coupled for feeding, so that the radiation structure radiates low-frequency electromagnetic wave signals outward; the radiation structure includes a radiator, and the radiator is loaded with a plurality of layers of surface periodic structures; when the radiation structure operates in a first mode, electromagnetic waves excited by a high-frequency radiation unit irradiates the radiation structure, and the radiator and the plurality of layers of surface periodic structures collectively form a non-resonant node spatial band-pass filter circuit with K resonant points and K null points; and when the radiation structure operates in a second mode, low-frequency electromagnetic waves excite the radiation structure by means of the feed structure, and units of the plurality of layers of surface periodic structures are excited by the radiator in a parallel manner to form an equivalent filter circuit. The present disclosure can improve radiation pattern distortion of a multi-band antenna, and enhance indexes such as antenna gain, out-of-band suppression, and a cross-polarization ratio.

This disclosure provides an intelligent system and its antenna gain enhancement device. The antenna gain enhancement device includes several metal components and an insulating housing. Each metal component comprises an insulating main body and a metal layer and an insulating layer sequentially arranged from the inside out on the outer surface of the main body. Several independent metal components are arranged within the housing in a predetermined manner. The antenna gain enhancement device is matched with the antenna in the intelligent system. The metal components are used to generate polarization under the influence of an applied electromagnetic field to improve antenna gain. In this disclosure, by designing the antenna gain enhancement device to include several metal components and an insulating housing, these metal components do not require assembly and are directly installed into the housing in an ordered or disordered manner. This achieves polarization under the influence of an applied electromagnetic field, forming an enhanced electric field in the direction of electromagnetic wave propagation, thereby enhancing antenna gain and enabling wider communication range, smoother network speeds, and lower signal latency.

The present specification provides a satellite communication antenna and electronic equipment, the antenna comprises a first radiation branch and a parasitic unit, the parasitic unit is a ring branch, and at least part of the branch is close to the first radiation branch and is coupled, and the parasitic unit is connected to the ground through at least one ground point.The satellite communication antenna of the embodiment of the present specification forms circular polarization by using the coupling effect of the parasitic unit, greatly improves the antenna gain compared with linear polarization satellite antenna, and improves the actual experience of satellite communication.And the radiation direction of the satellite communication antenna is mainly towards the zenith region, so that the antenna efficiency is higher, the satellite searching and communication efficiency in the state of user handheld mobile phone is improved, and the user experience is improved.

This application discloses an antenna device and an electronic device. The antenna device includes a first antenna assembly and a second antenna assembly. The first antenna assembly includes a first antenna, a first feed circuit electrically connected to the first antenna, and a tuning module connected to the first antenna. The tuning module, in cooperation with the first feed circuit, enables the first antenna to have a first operating frequency band and a second operating frequency band. The second antenna assembly includes a second antenna insulated from the first antenna and a second feed circuit connected to the second antenna. The second feed circuit enables the second antenna to have a third operating frequency band, which does not overlap with the first operating frequency band. When the first antenna operates in the second operating frequency band, it can gain the second antenna. This antenna device improves the radiation performance of the other antenna by gaining the other antenna with one antenna, thereby improving the communication performance of the electronic device.

The utility model provides a high gain antenna, which comprises an antenna body and a metal baffle plate arranged around the antenna body, the antenna body comprises a feed pin, a dielectric substrate and a radiation electrode fixed on the surface of the dielectric substrate, the feed pin is electrically connected with the radiation electrode, and the height H of the metal baffle plate is not greater than the maximum height D of the antenna body. And the minimum distance L1 from the metal baffle plate to the center of the feed needle and the maximum side length L of the dielectric substrate meet the condition that L1 is greater than or equal to 1 / 2 * L. The unique structure that the metal baffle is arranged around the antenna is adopted, the electromagnetic environment around the antenna is effectively changed by means of the reflection, shielding and diversion effects of the metal baffle on electromagnetic waves, and the effect of remarkably improving the antenna gain in a limited space is successfully achieved. The dual requirements of modern electronic equipment for antenna miniaturization and high performance are fully considered, the bottleneck of gain improvement in a limited space in the traditional antenna design is broken through, and powerful support is provided for efficient and stable operation of a satellite navigation system in a complex environment.