110 results about "Horn antenna" patented technology

The invention provides an automatic assembling platform for a radar liquid level meter shell, and belongs to the technical field of liquid level meter shell assembling. The platform comprises an assembling table, an air suction cylinder, a jacking table and a driving column. A plurality of sets of mounting grooves are formed in the assembling table in a penetrating mode, a plurality of sets of air exhaust channels and clamping cavities are formed in the assembling table, and a plurality of sets of air exhaust fixing holes are formed in each set of air exhaust channel in a communicating mode; the multiple sets of air exhaust channels rotate along with the assembly table to alternately and correspondingly communicate with the air exhaust groove. The jacking table is located below the assembling table and is configured to rotate relative to the jacking table; when rotating along with the assembly table, the driving column is driven by the jacking table to slide and lift in the clamping cavity, and the clamping plate is driven by lifting linkage of the driving column to slide in the mounting groove and used for clamping the horn antenna. According to the automatic assembling platform for the radar liquid level meter shell, the liquid level sensor can be doubly fixed, the liquid level sensor can be fixedly installed conveniently, and the assembled radar liquid level meter can be disassembled.

To provide a dielectric constant measuring method for reducing an analysis error of a dielectric constant in measurement by a free space method.SOLUTION: The method includes a step of preparing a first complex electric field distribution on an incident plane P1 of a dielectric sample 33, a step of preparing a second complex electric field distribution on an emission plane P2 of an electromagnetic wave transmitted from a receiving horn antenna and assumed to be incident on the dielectric sample 33 in a direction opposite to an emission direction of the electromagnetic wave, a step of calculating an angular spectrum distribution on a wave number space by inverse Fourier transformation of the first complex electric field distribution, a step of measuring a thickness of the dielectric sample 33 in a direction along an electromagnetic wave transmission direction, a step of calculating a reference of a complex electric field distribution which is a complex electric field distribution when the electromagnetic wave propagates in a free space by a distance corresponding to the thickness, and a step of obtaining a third complex electric field distribution of the electromagnetic wave propagating in the emission direction on the emission plane P2.SELECTED DRAWING: Figure 2

The application discloses a waveguide type Ka-band horn antenna, which comprises a straight waveguide section, a feeding section, a rear feeding cover and an antenna electric connector; the inside of the straight waveguide section is a rectangular waveguide cavity without a spine structure, and a local slot is formed in the matching surface of the feeding section; a feeding structure is designed in the inside of the feeding section, and the feeding structure is a multilayer step with a local protrusion on the matching surface of the straight waveguide section; the straight waveguide section and the feeding section are combined through fasteners, and the matching end surfaces of the straight waveguide section and the feeding section are both designed with blind hole positioning pin holes; the groove of the straight waveguide section is tightly matched with the protrusion structure of the feeding section; the rear feeding cover is locally protruded, and the protrusion structure is tightly matched with the cavity of the feeding section; the antenna electric connector is fixed through double holes, and the fastener passes through the through hole of the rear feeding cover and the antenna electric connector to simultaneously fix the two on the feeding section. The scheme provided by the application can effectively guarantee the design requirements of the antenna cavity, and has low overall manufacturing difficulty and good processability.

The application discloses an ultra-wideband circularly polarized wide-beam four-ridged horn antenna, which comprises four ridges arranged in a circle and a bottom-closed and top-open metal horn side wall, the ridges are connected with the upper surface of the bottom of the metal horn side wall, the lower surface of the bottom of the metal horn side wall is connected with a power division and phase shift network, the power division and phase shift network is connected with metal probes respectively arranged between two adjacent ridges of the four ridges, and the other two ridges are in contact with the cladding part of the metal probes; the working frequency band and the beam width are improved under the premise of small size by loading a stepped radiation structure on the upper part of the metal horn side wall, the beam width is regulated by adjusting the height and width of each layer of the stepped radiation structure, the beam width is further improved by introducing a circular slot on the metal horn side wall, and meanwhile, the metal probes which are bent by 90 degrees are arranged in the probe baffle, the side-feeding form of the four-ridged horn antenna is changed into bottom-feeding, and the occupation of the lateral space can be reduced without changing the original performance of the antenna.

The invention discloses a quasi-single-mode circular waveguide conical horn antenna, a radar and a communication device. The quasi-single-mode circular waveguide conical horn antenna comprises a circular waveguide section and a conical horn section. Conductor loss is reduced by remarkably increasing the diameter of the circular waveguide, and axial periodic annular grooves are formed in the inner wall of the circular waveguide to form a spatial mode filter and a selective attenuation high-order mode, so that high radiation efficiency and high mode purity are realized at the same time in a millimeter wave frequency band. And the conical horn section adopts an index profile to realize high-directionality radiation. The antenna structure effectively solves the technical problems of large loss and impure mode in a millimeter wave high-frequency band in the traditional design.

The utility model relates to the technical field of horn antennas, and provides a miniaturized double-ridge horn antenna, which comprises a rectangular frame, an antenna body is movably inserted into the inner side of the rectangular frame, a rectangular block is fixed at one end of the antenna body, the rectangular block is movably inserted into the inner side of the rectangular frame, and limiting grooves are symmetrically formed in the side walls of the rectangular block. Through holes are symmetrically formed in the outer wall of the rectangular frame, the through holes are communicated with the inner side of the rectangular frame, and movable plates are symmetrically arranged on the outer side of the rectangular frame. The antenna body is installed and fixed in the mode that the rectangular block is movably inserted into the inner side of the rectangular frame, the limiting rods on the side walls of the movable plates are movably inserted into the inner sides of the limiting grooves in the side walls of the rectangular frame to be fixed, and the trapezoidal plates can move to push the two movable plates to move towards the two sides by pushing the push-pull blocks. The antenna body dismounting device is easy to operate and convenient to dismount, and dismounting and maintenance work of the antenna body can be rapidly completed.

The low-profile broadband open horn antenna comprises a rectangular metal waveguide, the top and the bottom of the rectangular metal waveguide are each provided with a V-shaped air cavity which faces the wide side of a rectangle and is connected with an external free space, and a V-shaped opening which faces the wide side of the rectangle and is connected with the external free space is formed in each V-shaped air cavity; the metal wall of the V-shaped opening is removed; and the coaxial feeder line longitudinally penetrates through the rectangular metal waveguide, and the top of the coaxial feeder line is connected with metal between the end point of the V-shaped air cavity and the end point of the V-shaped opening. The cross polarization suppression degree of electromagnetic waves passing through the rectangular metal waveguide is high; meanwhile, the width of the V-shaped opening is continuously expanded along the propagation direction, electromagnetic waves propagated in the structure of the V-shaped opening are TE10 modes in the metal waveguide, and the electromagnetic waves in the modes have the characteristic of high gain during radiation, so that the antenna has the characteristic of high gain radiation.

The application discloses a high-gain dual-polarized wideband horn antenna and relates to the technical field of horn antennas for communication. The horn antenna comprises an antenna body, a radiation aperture extension cylinder is fixed at a horn opening of the antenna body, a first conical cavity is formed in an inner cavity of the antenna body, a second conical cavity is formed in an inner cavity of the radiation aperture extension cylinder, a right end opening of the first conical cavity is matched with a left end opening of the second conical cavity, and an opening angle of the first conical cavity is consistent with an opening angle of the second conical cavity. The horn antenna has high radiation efficiency and can realize wideband and high gain in the smallest size.

The utility model discloses an easily detachable antenna fixing tool, including tool fixed end and antenna installation end. Tool fixed end is fixed in the top of elevating lever, contains bottom plate, side plate and installation panel, and the antenna installation end includes installation disc, extension column, fixed panel, waveguide coaxial adapter and gain horn antenna. The installation disc is fixed through the interference fit of adaptive hole and the adaptive column of installation panel, and the both ends of extension column are inserted into the first insertion hole of installation disc and the second insertion hole of fixed panel to realize detachable connection through interference fit, and the opening of fixed panel forms a channel with the limiting portion for the plug-in of waveguide coaxial adapter. The tool realizes quick disassembly and assembly through interference fit, the installation calibration hole guarantees accuracy, the structural design enhances stability, the opening design is convenient for maintenance, and effectively improves the disassembly and assembly efficiency and use reliability.

The present invention relates to a frequency steered phased array antenna which adjusts beam radiation angle according to frequency for broadband electromagnetic waves, and radiates beams of uniform intensity over a broad range of angles including directly forward. The frequency steered phased array antenna according to the present invention comprises: a directional coupler including a serial feed line that is stacked in n layers and has a plurality of coupling holes formed in one direction in each of the layers; and a radiating module including n horn antennas respectively connected in correspondence to the n layers of the serial feed line, wherein the plurality of coupling holes are formed in each of the layers of the serial feed line at intervals of ¼ of the wavelength (λ) of electromagnetic waves (radio waves) supplied to the serial feed line, and the horn antennas radiate the electromagnetic waves output through the coupling holes of the serial feed line.

The present application relates to a horn antenna element (100), comprising: a septum polarizer (110) configured to transform a linearly polarized input signal (102) into a circularly polarized output signal (104) at a common port (112); and a horn radiator (120) comprising: an inlet geometry formed as a four-crest waveguide (121) for receiving the circularly polarized output signal (104) at the common port (112); and an aperture grid (124) for radiating a grid-based circularly polarized output signal (106), wherein the septum polarizer (110) is embedded in the four-crest waveguide (121) at the common port (112).

This invention provides a high backlobe suppression horn antenna, comprising a horn antenna cavity with a choke slot. The horn antenna cavity is installed within a reflector cavity to form a high backlobe suppression horn antenna. This invention uses a simple cabin structure as the reflector cavity, which is more suitable for horn antennas compared to complex cavity structures, and can be assembled with an radome, exhibiting high installation adaptability.

A horn antenna device is disclosed that comprises: a plastic body comprising a top face, a bottom face opposing the top face and lateral faces adjoining the top face and the bottom face; and a cavity formed in the plastic body, wherein the cavity comprises a cavity opening formed at the top face of the plastic body, wherein the cavity is at least partially coated with a metal layer to form a horn antenna for radiating microwaves through the cavity opening, wherein the plastic body is partially coated with the metal layer, and wherein the metal layer being configured to define a radiation characteristic of the horn antenna.

The application discloses a beam reconfigurable horn antenna device and a use method thereof, and belongs to the technical field of antennas, and comprises: a wave module which is fixedly arranged at the tail end of the horn antenna device; a three-axis telescopic framework which is connected to the front end of the wave module, and is composed of at least a transverse electric control telescopic component, a longitudinal electric control telescopic component and a depth direction electric control telescopic component, and is used for changing the aperture and the longitudinal depth size of the horn antenna; a distance feedback device which is arranged at the aperture position of the three-axis telescopic framework, and is used for detecting the actual aperture size in real time and feeding back the actual aperture size to a control extension; and a control extension which is electrically connected with the transverse electric control telescopic component, the longitudinal electric control telescopic component, the depth direction electric control telescopic component and the distance feedback device. The beam reconfigurable horn antenna device has the advantages of simple structure, small size, high structural strength, and can expand horn antennas of various frequency bands and gains, and has high development and use potential.

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 discloses a satellite-borne wide-beam circularly polarized antenna with beam equalization and a satellite, and relates to the technical field of antennas.The antenna comprises a conical horn body, a partition type circular polarizer, a feeding port and an insulating base which are sequentially connected.The conical horn body is a conical structure with an umbrella-shaped metal radiation director, and the asymmetry of the traditional horn antenna directional diagram is effectively solved through multi-mode excitation of the circular polarizer, so that the beam equalization characteristic is realized.The loaded dielectric material is polytetrafluoroethylene, the mouth surface radius of the horn is equivalently reduced through dielectric loading, and the directional diagram beam width is widened.The partition type circular polarizer is adopted to realize good circular polarization effect.Through the joint action of the base and the umbrella-shaped metal radiation director, the interference of the antenna mounting surface on the wide-beam antenna radiation diagram is reduced, the requirement of the antenna on the mounting environment is lowered, the wide-beam circularly polarized radiation and reception of the antenna can be effectively realized, and the antenna has the advantages of wide beam, beam equalization and low axial ratio.

The embodiment of the present application provides a kind of excitation structure and microwave oven, excitation structure includes waveguide horn antenna and surface wave generating component, waveguide horn antenna has microwave transmission channel, surface wave generating component has surface wave generating cavity, the surface wave generating component is open along the circumferential side, to make the side of the surface wave generating cavity form the communication port that communicates with outside, the microwave transmission channel is communicated with the surface wave generating cavity by the communication port, and part of the area of the waveguide horn antenna is located outside the surface wave generating cavity, another part of the area of the waveguide horn antenna is located in the surface wave generating cavity.The excitation structure of the embodiment of the present application can improve the use volume rate.

The present application relates to the technical field of broadband antenna, in particular to a kind of broadband transverse electric and magnetic horn antenna that can be installed on the surface of metal cylinder, it is characterized in that, metal cylindrical carrier, four broadband transverse electric and magnetic horn antennas installed on the surface of metal cylinder, each transverse electric and magnetic horn antenna is mainly composed of radiation structure and ridge, to increase the bandwidth of antenna.Compared with prior art, the bandwidth of antenna is significantly improved by adding ridge structure.Transverse electric and magnetic horn antenna is connected with two nylon isolation columns and metal cylinder through a inverted L type structure.The antenna provided by the present application has the characteristics of wide operating frequency band, good directivity, etc., and is suitable for electromagnetic compatibility test, radar system, field measurement and ultra-wideband communication system.

The light-weighted horn body is used for a ridge-added horn antenna, the horn body is a right quadrangular pyramid component with one big head and one small head, the horn body is welded by four side plates, the inner wall of the side plate is vertically connected with a ridge piece extending along the length direction of the side plate, the inner wall of the ridge piece is an arc surface, any ridge piece does not contact with the rest ridge pieces, and the plane where any ridge piece is located passes through the axial line of the horn body, the side plate and the ridge piece are made of non-metal material, a plurality of parallel and spaced holes are arranged on the ridge piece, the holes on all the ridge pieces are one-to-one corresponding, and a metal conductive layer is plated on the surface of the side plate, the surface of the ridge piece and the inner wall surface of the hole, the light-weighted horn body can realize light weight by the material of the side plate and the ridge piece and the cavity formed by the holes, can optimize the disturbance of the ridge piece to the field by the cavity formed by the holes, and can improve the capacitive loading of the ridge piece in the length direction of the ridge piece, so that the performance adjustment has more means, and the adjustment of the parameters such as the reflection coefficient and the isolation can be considered.

The embodiment of the invention provides an excitation structure and a microwave oven, the excitation structure comprises a waveguide horn antenna and a surface wave generation assembly, the waveguide horn antenna is provided with a microwave transmission channel, the surface wave generation assembly is provided with a surface wave generation cavity, and one side of the surface wave generation assembly along the circumferential direction is open. The waveguide horn antenna is arranged in the surface wave generation cavity, so that a communication port communicated with the outside is formed in one side of the surface wave generation cavity, the microwave transmission channel is communicated with the surface wave generation cavity through the communication port, and a part of area of the waveguide horn antenna is located on the outer side of the surface wave generation cavity; and the other part of area of the waveguide horn antenna is located in the surface wave generation cavity. The excitation structure provided by the embodiment of the invention can improve the use plot ratio.

The invention relates to a system that implements a process for inspecting a tyre identified during retreading, characterized in that the system comprises a thickness measuring device (100) comprising an electromagnetic jet (106) having a horn antenna (106a), said antenna being extended by a cylinder comprising a cylindrical tip (106b). The invention also relates to a process for inspecting a tyre identified during retreading, the inspection process being implemented by the disclosed system. The invention further relates to a retreading method comprising the inspection process performed by the disclosed system.

The utility model discloses an angle adjusting device of a horn antenna, which comprises a supporting seat and an antenna mounting plate arranged above the supporting seat, the antenna mounting plate is connected with the supporting seat through two adjusting plates, fasteners are arranged on the adjusting plates, and the adjusting plates are connected with the supporting seat. The end portion of the fastening piece penetrates through a limiting groove formed in the adjusting plate and is connected with the supporting base, when the angle of the adjusting plate is adjusted, the fastening piece is rotated clockwise or anticlockwise, fastening or loosening of the adjusting plate is achieved, and therefore the angle of the adjusting plate is adjusted. According to the utility model, the structure is simple, through the cooperative arrangement of the adjusting plate, the fastener and the antenna mounting plate, the coplanar convenient installation of the horn antenna is realized, the synchronous adjustment of multiple horn angles is supported, the control complexity is simplified, the convenience of installation and debugging is improved, and the high efficiency and stability of the operation of an antenna system are ensured.

The application discloses a low-profile full-metal circularly polarized reflective array. The reflective array antenna comprises a circularly polarized horn antenna for feeding, a full-metal circularly polarized reflective array, and a support for fixing the circularly polarized horn antenna and the full-metal circularly polarized reflective array. The circularly polarized reflective array is composed of units with different reflection phases, and the units are adjusted by rotation to form a required radiation beam. The antenna has a full-metal structure, and has certain advantages over a reflective array realized by using a dielectric substrate in application scenarios such as high power and conformal. The antenna has the characteristics of simple structure, low profile, low cost and short design period, and is suitable for satellite communication and radar fields.

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 utility model discloses glue filling horn antenna, including fixed base, the middle part fixed setting of fixed base inboard has fixed block, the utility model discloses glue filling horn antenna, through four second air cylinders drive four moving blocks to contract, and further drive four clamping strips two two opposite movements to the shell stable clamping is convenient to, through first air cylinder promotes electric slide rail opposite movement, makes two clamping blocks place at the both sides of horn antenna body, again through two fourth air cylinders promote two clamping blocks opposite movement, and further convenient to the limiting clamping of horn antenna body, through first air cylinder drive electric slide rail reset, and through electric slide rail drive sliding seat moves to one side, makes horn antenna body place at the just above of shell, again through first air cylinder promotes electric slide rail downward movement, and through third air cylinder promotes the downward movement of auxiliary push plate, and further will horn antenna body accurate card into the installation groove of shell.

Systems for gradient surface electromagnetic wave generation and related methods are described. In some implementations, a first horn antenna may be configured to disrupt momentum conservation parallel to an interface between water and another material, enabling the generation of gradient surface electromagnetic waves. A second horn antenna, positioned in proximity to the first, may be adapted to generate anti-resonances in response to the gradient surface electromagnetic waves initiated by the first horn antenna. The presence of an object, which may be composed of metal or dielectric materials, near the interface may alter the anti-resonances generated by the horn antennas. This alteration in anti-resonances may indicate the presence of the object, thereby facilitating the detection of metallic and dielectric objects in close proximity to the water surface. This system and method may enhance biosensing and bioimaging applications by supplementing traditional x-ray and ultrasound techniques with gradient surface electromagnetic wave-based detection.

The present application relates to the technical field of communications, and in particular to a horn antenna. The horn antenna comprises a horn cavity and a dielectric protrusion, wherein along the axial direction of the horn cavity, two ends of the horn cavity are respectively a feed input end and a horn opening; and the dielectric protrusion is arranged at the horn opening, the dielectric protrusion and the horn cavity are coaxially arranged, the radial dimension of the dielectric protrusion is less than the diameter of the horn opening, and in the direction from the horn opening to the feed input end, the cross-sectional area of the dielectric protrusion gradually decreases.

The invention discloses a satellite-borne wide-beam circularly polarized antenna with equalized beams and a satellite, and relates to the technical field of antennae, the antenna comprises a conical horn body, a partition plate type circular polarizer, a feed port and an insulating base which are connected in sequence; the conical horn body is of a conical structure with an umbrella-shaped metal radiation director, the asymmetry of a traditional horn antenna directional diagram is effectively solved through multi-mode excitation of the circular polarizer, and the wave beam equalization characteristic is achieved; the loaded dielectric material is polytetrafluoroethylene, the aperture radius of the horn is equivalently reduced through dielectric loading, and the beam width of a directional diagram is broadened; a partition plate circular polarizer is adopted, so that a good circular polarization effect is achieved; through the combined action of the base lifting antenna and the umbrella-shaped metal radiation director, the interference of an antenna mounting surface on a wide-beam antenna radiation pattern is reduced, the requirement of the antenna on a mounting environment is reduced, wide-beam circular polarization radiation and receiving of the antenna can be effectively realized, and the antenna has the advantages of wide beam, beam equalization and low axial ratio.

The invention relates to the technical field of water level monitoring devices, and discloses a riverway water level intelligent monitoring device which comprises a support, a radar liquid level meter, a rotary drum and a telescopic plate. The radar liquid level meter is arranged on the supporting plate, a horn antenna is installed on the side, away from the radar liquid level meter, of the supporting plate, and the horn antenna is electrically connected with the radar liquid level meter. The rotating cylinder sleeve is arranged on the horn antenna and is rotationally connected with the horn antenna; the telescopic plates are installed on the outer side wall of the rotating cylinder, limiting shafts are fixed to the sides, away from the rotating cylinder, of the telescopic plates, path grooves are formed in the sides, facing the horn antenna, of the supporting plates, and one ends of the limiting shafts are inserted into the path grooves and can slide along the path grooves. The intelligent monitoring device for the water level of the river channel can solve the problem that an existing radar liquid level meter is prone to being affected by strong wind, so that the monitoring device is difficult to accurately measure the liquid level of the river channel.