61 results about "Antenna surface" patented technology

To provide an antenna snow melting device that can simplify the calculation of the power required to melt snow.SOLUTION: An antenna snow melting device 400 attached to an antenna reflector 500 includes an imaging unit 401 that images the antenna reflector 500, a measuring unit 402 that acquires imaging data of the antenna reflector 500 from the imaging unit 401 and measures the snow accretion rate, which indicates the rate of snow accretion per unit area of the antenna surface of the antenna reflector 500, on the basis of the acquired imaging data, and a control unit 403 that controls a heating unit 501 installed on the antenna reflector 500 on the basis of the snow accretion rate of the antenna surface of the antenna reflector 500.SELECTED DRAWING: Figure 13

The utility model relates to the technical field of antenna testing, in particular to a profiling supporting seat for antenna testing, which comprises a base, an accommodating groove is arranged on a supporting surface of the base, a plurality of sliding plates are vertically and slidably arranged in the accommodating groove, and the sliding plates are uniformly arranged in the accommodating groove. An air bag assembly is arranged between the sliding plate and the base. The air bag assembly comprises a main air bag and an auxiliary air bag, and air spaces of the main air bag and the auxiliary air bag are communicated together. The main air bag is located between the bottom end of the sliding plate and the containing groove. Gap spaces exist between the adjacent sliding plates, an auxiliary air bag is correspondingly arranged in each gap space, and the top ends of the auxiliary air bags are attached to the side walls of the top ends of the sliding plates. According to the utility model, the technical problem of self-adaptive profiling supporting of the profiling supporting seat on the surfaces of antennas of different models is solved.

The invention relates to a control unit (100) for receiving and processing radio signals in a vehicle (1300). The control unit (100) comprises a housing (103), a main circuit board (205) arranged in the housing (103) and having at least one contact surface (218), and an antenna (107). The antenna (107) has an antenna surface (119) arranged on a top surface (108) of the housing (103) and a connection contact (221) with at least one spring-elastic contact finger (223) that contacts a contact surface (218) of the main circuit board (205). The antenna surface (119) and the connection contact (221) are formed in one piece from a metal sheet.

This invention provides an electronically scanning antenna system capable of communicating with communication equipment with high precision and continuous operation. [Solution] The electronic scanning antenna system (1) comprises a plurality of antenna surfaces (S), detection units (12, 131), a selection unit (132) that, based on the detection results of the detection units, selects one of the plurality of antenna surfaces as the main antenna surface and one of the other antenna surfaces as the sub-antenna surface, a receiving unit (134) that receives a received signal from a communication device via the main antenna surface and the sub-antenna surface, and a transmitting unit (135) that transmits a transmitted signal to a communication device via the main antenna surface. Each of the plurality of antenna surfaces is equipped with a plurality of units (U1 to U4) through which the received signal and the transmitted signal are transmitted. The detection unit detects the received signal value of the received signal transmitted to each of the plurality of units.

The invention provides a novel slot flat plate scattering portable antenna system, which is applied to the technical field of antenna scattering communication. Comprising an antenna surface subsystem, a servo turntable subsystem and a foldable tripod unit, wherein the servo turntable subsystem and the foldable tripod unit are mounted on a back plate of the antenna surface subsystem, and the foldable tripod unit supports the servo turntable subsystem; the antenna surface subsystem transmits and receives electromagnetic wave signals; the servo turntable subsystem bears and drives the antenna surface subsystem to perform azimuth and pitching rotation, and comprises an azimuth assembly, a pitching assembly, an ultrasonic sensor and a servo control system; the ultrasonic sensor measures the real-time distance from the back plate; the servo control system determines a current pitch angle according to the real-time distance; and under the condition that the current azimuth angle and the current pitch angle of the antenna surface subsystem meet the preset condition of the alignment target, the azimuth assembly and the pitch assembly are controlled to stop running. The problems that an existing portable antenna is large in size, tedious in erection, low in attitude adjustment intelligent degree, too large in weight and insufficient in modular design are solved.

This utility model discloses a hermetically sealed combination antenna for 4G and GPS in wellbore applications, relating to the field of combined antenna technology. It includes a screw sleeve fixedly mounted on a housing, through which the GPS antenna and 4G antenna pass and are electrically connected to the housing. A rubber post, encasing the GPS and 4G antennas, is fixedly mounted inside the screw sleeve. This hermetically sealed combination antenna for 4G and GPS in wellbore utilizes the rubber post encasing the two antennas within the screw sleeve to seal and enclose the inner side of the screw sleeve, thereby improving the sealing line between the inner side of the screw sleeve and the antennas. This prevents external moisture from entering the inner side of the housing along the inner side of the screw sleeve and the antenna surface, improving the protection of the internal circuitry.

The application provides a multi-frequency antenna and a communication device. The multi-frequency antenna comprises a reflecting plate, a first radiating unit and a second radiating unit, the first radiating unit and the second radiating unit are arranged on one side of the reflecting plate, and the first radiating unit is located between the reflecting plate and the second radiating unit. The first radiating unit comprises a first radiating part and a metal plate, and the metal plate is located between the first radiating part and the second radiating unit. The second radiating unit comprises a second radiating part and a metal ring, and the metal ring is located between the second radiating part and the metal plate. When the above structure is adopted, the size of the multi-frequency antenna as a whole can be reduced, and the first frequency band and the second frequency band have high isolation, so that the two frequency bands can work independently, the multi-frequency antenna can meet the miniaturization demand of the common antenna surface, the antenna works stably, and the efficiency is high.

The utility model discloses an asymmetric coupling type double-cage short-wave antenna device, and belongs to the technical field of radio short-wave communication. The antenna device comprises a self-supporting tower assembly, a coupling lower cage antenna surface assembly, a direct-feed lower cage antenna surface assembly, a distribution box assembly, a feed end insulator assembly, a direct-feed upper cage antenna surface assembly and a main lightning rod assembly. The asymmetric coupling type double-cage short-wave antenna device provided by the utility model has the characteristics of wider working bandwidth and low elevation radiation, and the antenna surface and the self-supporting tower assembly are designed in an integrated conformal manner, so that the influence of performance index reduction caused by the fact that the self-supporting tower assembly passes through the antenna surface is eliminated; the device not only can cover an ultra-wideband short-wave communication frequency band of nearly four times of frequency, but also can realize excellent performance of low return loss, high gain, low radiation elevation angle and omnidirectional radiation.

The invention discloses an irregular sub-array division design method for array antenna beamforming, which comprises the following steps: constructing an association mathematical model of an irregular sub-array division array plane based on a preset sub-array set and an array antenna array plane, the sub-array set comprising a plurality of irregular candidate sub-arrays, the association mathematical model is used for representing an affiliation relationship between the plurality of irregular candidate sub-arrays and all array elements in the antenna array plane; based on reference full-filling array excitation and a preset excitation matching criterion, excitation of each irregular candidate subarray is determined, and the reference full-filling array excitation is excitation required by target beam forming; based on the association mathematical model and excitation of each irregular candidate subarray, a convex optimization model is constructed, and the convex optimization model takes a main lobe forming wave number matching error and a peak side lobe level as a joint optimization target; and solving the convex optimization model to obtain an optimal irregular subarray division scheme and excitation of each subarray. According to the invention, good radiation characteristics of the antenna can be maintained while the cost of the antenna system is reduced.

The application provides a novel gap flat plate scattering portable antenna system, which is applied to the technical field of antenna scattering communication. The system comprises an antenna surface subsystem, a servo turntable subsystem installed on a backboard of the antenna surface subsystem and a foldable tripod unit, the foldable tripod unit supports the servo turntable subsystem; the antenna surface subsystem transmits and receives electromagnetic wave signals; the servo turntable subsystem carries and drives the antenna surface subsystem to rotate in azimuth and elevation, and comprises an azimuth component, an elevation component, an ultrasonic sensor and a servo control system; the ultrasonic sensor measures the real-time distance from the backboard; the servo control system determines the current elevation angle according to the real-time distance; in the case that the current azimuth angle and the current elevation angle of the antenna surface subsystem meet the preset conditions for aligning the target, the azimuth component and the elevation component are controlled to stop running. The problems of the prior art, such as large volume, complicated erection, low intelligent degree of attitude adjustment, excessive weight and insufficient modular design, are solved.

The invention relates to a waveguide antenna (10) for a radar sensor (46), comprising a waveguide substrate (12) having cavity structures (14) for transmitting radar waves within the waveguide antenna (10), an antenna surface (18) facing surroundings (16) of the waveguide antenna (10), at least one emission element (20) for emitting radar waves into the surroundings (16) of the waveguide antenna (10), said radar waves being polarized in a first direction (22) perpendicular to a normal direction (24) of the antenna surface (18), wherein at least regions of the antenna surface (18) comprise polarization means (34) for rotating the polarization of radar waves that were reflected in the surroundings (16) and are incident on the polarization means (34). The invention also relates to a radar sensor (46).

This invention discloses an automatic anti-condensation purging system and method for ultrasonic / radar level gauges. The system includes an anti-vapor protection device and an automatic purging control air supply unit. The protection device is a double-sleeve structure fitted over the probe, forming an annular air duct, with a directional injection hole at its lower end. The control unit includes a solenoid valve and a pressure reducing valve controlled by a time relay. The method involves setting the purging cycle and duration, and the time relay periodically triggering the solenoid valve to open, allowing dry compressed air to be ejected at high speed through the injection hole in the annular air duct, directionally purging the antenna surface. After purging, the valve is closed, and the process is repeated. Preferably, an electric heating and temperature control system is installed inside the annular air duct. This invention achieves timed, directional, uniform, and low-energy purging of the level gauge antenna surface, effectively preventing water vapor condensation and dust adhesion, and significantly improving the measurement accuracy and operational reliability of the instrument in harsh environments.

The utility model discloses a flexible foldable structure antenna surface, which relates to the technical field of antenna surface materials and comprises an antenna surface main body, the antenna surface main body sequentially comprises a first TPU (thermoplastic polyurethane) layer, a conductive layer and a second TPU layer from inside to outside, and the conductive layer is carbon fiber woven cloth. According to the utility model, the antenna surface with the flexible foldable structure is arranged, so that the antenna surface is endowed with overall flexibility and can be smoothly unfolded and folded, the folding times are more than 100 times, and no crease is generated; wherein the first TPU layer and the second TPU layer are thermoplastic elastomers, and the first TPU layer is softer than the second TPU layer, so that better toughness is provided for the inner surface, and smooth unfolding and folding of the antenna surface are facilitated; the structure is reasonable and scientific, the manufacturing is simple, the sheet resistance of the conducting layer is 0.80 omega mm < 2 > / m, and the electromagnetic wave gain reflection requirement of the X-band antenna surface can be met.

The invention discloses an active tracking and covering method based on a channel knowledge map in a mobile antenna system, which aims to maximize the total spectrum efficiency in a service period by expressing an active tracking and covering task of mobile user equipment as a long-term trajectory optimization problem of a mobile antenna. Accurately modeling a dependency relationship of a channel on each surface freedom degree of the antenna by using a control parameter obtained based on a Rodrigues rotation matrix; key physical feasibility constraint conditions are systematically integrated, so that the feasibility of an optimization result in engineering is ensured; a channel knowledge map is introduced to realize proactive planning, and traditional reactive control is converted into active planning by utilizing prediction information, so that performance loss caused by channel information lag is reduced; on the basis of a manifold optimization framework, rotation parameters of the movable antenna system are mapped to a special orthogonal group manifold for optimization, rotation constraints are processed through Lie group operation, and singularity and calculation redundancy caused by traditional parameterization are avoided.

To provide a signal transmitter / receiver capable of achieving both target detection performance and reduction of erroneous detection.SOLUTION: A signal transceiver comprising: a control circuit; an antenna body including an antenna element group that is an assembly of a plurality of antenna elements; and an electromagnetic wave absorber, wherein the electromagnetic wave absorber and the antenna body have all of the following features 1 to 3. Feature 1: An angle φ formed between the electromagnetic wave absorber and the antenna body surface is π / 4 or more and 3 π / 4 or less. Feature 2: An electromagnetic wave absorber is installed toward an electromagnetic wave transmission direction of the antenna body surface. Feature 3: The following expressions 1 and 2 are satisfied, where A (k) is a return loss at a peak top when an electromagnetic wave is incident on the electromagnetic wave absorber from the antenna body at an incident angle k, and θ is an angle formed by a traveling direction of the electromagnetic wave transmitted by the antenna body and a direction of a main side lobe. A (π / 2 - θ)> A (2 π / 3 - θ) Expression 1 A (π / 2 - θ)> A (π / 3 - θ) Expression 2 SELECTED DRAWING: Figure 1

The present invention is a planar monopole loop composite multi-broadband antenna, which designs the ground wire into a loop shape, surrounding the asymmetric T-shaped monopole signal line to increase the path of the antenna surface current and create low-frequency resonant frequency band of the antenna. The antenna has the characteristics of a balanced antenna, and the radiation performance and bandwidth of the antenna are not affected when the ground plane changes Placing the signal line close to the ground line creates a coupling effect to increase the path of the antenna's surface current, thereby increasing the flatness of the antenna's high-frequency resonant frequency band impedance bandwidth.

Surface electromagnetic wave (SEW) antennas for maintaining resonance frequency in response to proximity to a conducting surface and related methods are described. In some implementations, an SEW antenna may include a tip with a spherical particle configured to maintain the antenna's resonance frequency when in proximity to a conductive surface. The antenna may feature a resonant helix that supports a strong electric field at the tip and a strong magnetic field within its core, facilitating efficient energy transfer to surface plasmon polaritons. The antenna may comprise one or more feed points located on the resonant helix, with each feed point corresponding to a specific operating frequency band, enabling the antenna to support multiband operation. This configuration may allow for enhanced bandwidth and reduced antenna dimensions, overcoming the Chu-Harrington limit and enabling compact design for applications where space is at a premium. Dimensions may be reduced through loading of the helix.

The application discloses a Ku / Ka dual-frequency shared automatic portable communication antenna and belongs to the technical field of antennas, which comprises a feed source, an antenna reflecting surface, a microwave network, an antenna seat frame, a supporting leg and the like. The application adopts a Ku / Ka integrated feed source, a microwave network and an antenna reflecting surface, and frequency band switching is realized through a dial lever type frequency band switching switch, so that the operation is simple and efficient. The high-precision split antenna surface is adopted, the split surface panels have high consistency, the panel interchanging can be realized, the positioning is realized through a pressing plate, the lock catch is locked, and the rapid assembly can be realized. The antenna seat frame adopts a novel integrated transmission mechanism, the transmission mechanism has the characteristics of small size and light weight, space is left out to realize the integrated design of the antenna seat frame and a terminal, and the antenna appearance design implements the industrial design concept and the hidden cable design, and the modeling is beautiful.

The invention relates to a large deployable parabolic cylinder antenna profile control method. The profile precision total error RMS0 is distributed to the structural design, assembly and manufacturing error RMS1, the deployable mechanism error RMS2 and the environment disturbance error RMS3; continuously distributing the RMS1 as the production error and the assembly error of the antenna, and carrying out antenna material selection, production process control and subassembly control; performing composite thermal control coating on the surface of the reflector antenna based on the RMS3; designing an unfolding mechanism based on RMS2; producing and assembling the deployable parabolic cylinder antenna, establishing a finite element model at the same time, and further establishing a rigid-flexible coupling dynamic model of the deployable parabolic cylinder antenna; revising the parameters of the rigid-flexible coupling dynamic model according to the actually measured temperature value after the antenna is unfolded until the error between the simulated temperature value and the actually measured temperature value meets the precision requirement; and according to the revised rigid-flexible coupling dynamic model, calculating the profile error indication of the full-array reflector antenna. According to the invention, the profile precision of the in-orbit reflector antenna is ensured.

The invention relates to the technical field of satellite signals, and discloses a satellite signal receiving device for outdoor mobile communication, which comprises a turbulent flow assembly arranged on one side of a bottom plate and an adjusting assembly arranged on one side of the bottom plate, the turbulent flow assembly comprises two sets of sliding grooves, sliding blocks are slidably embedded in the two sets of sliding grooves in the horizontal direction, supporting rods are fixedly connected to one sides of the outer surfaces of the two sets of sliding blocks, and flow guide plates are fixedly connected to one sides of the outer surfaces of the multiple supporting rods; the invention aims to solve the problems of signal intensity fluctuation, transmission interruption, signal loss and the like caused by high-frequency jittering of an antenna and damage to the alignment precision of a signal tracking mechanism due to direct action of head-on airflow on an antenna body and a mounting base and easy formation of eddy current on the surface of the antenna when a vehicle runs. And meanwhile, continuous load generated by airflow impact can intensively act on a base connecting part, so that bolts are easy to loosen, the base deforms, and the service life of equipment is shortened.

The invention relates to a waveguide antenna (10) for a radar sensor (46), comprising a waveguide substrate (12) with cavity structures (14) for transmitting radar waves within the waveguide antenna (10), an antenna surface (18) facing an environment (16) of the waveguide antenna (10), and at least one emitting element (20) for emitting radar waves polarized along a first direction (22) perpendicular to a normal direction (24) of the antenna surface (18) into the environment (16) of the waveguide antenna (10), wherein the antenna surface (18) has at least partially polarizing means (34) for rotating the polarization of radar waves reflected from the environment (16) and incident on the polarizing means (34). The invention further relates to a radar sensor (46).

The utility model relates to the technical field of antenna testing, in particular to a reference positioning assembly for antenna testing, which comprises a platform, the inside of the platform is hollow, an open slot penetrates through the middle of the platform, the open slot is provided with a bottom surface base station along the through direction of a notch, and the top surface of the base station abuts against the bottom surface of an antenna; flexible wrappers are hinged to the two sides of the bottom face base table respectively, each flexible wrapper is of a flexible structure, an elastic displacement assembly is arranged on the other face, away from the antenna, of each flexible wrapper, and during positioning, the elastic displacement assemblies drive the flexible wrappers to be subjected to deformation fitting on the surface of the antenna; clamping pieces are symmetrically arranged on the two sides of the bottom face base table respectively, the clamping ends of the clamping pieces are arranged to be profiling pieces, and the profiling ends of the profiling pieces are attached to the side faces of the antenna in a profiling mode; a side face positioning assembly is arranged on the platform, two positioning ends are arranged on the side face positioning assembly, and the positioning ends are symmetrically distributed on the side face of the antenna and abut against the side face of the antenna. According to the utility model, the technical problem of ensuring reference positioning when the antenna is tested is solved.

The invention relates to a satellite-borne radar high-precision near-field phase calibration method, and belongs to the technical field of space microwave remote sensing. Building a phase calibration system; the amplitude and phase value of each TR assembly channel are obtained, geometric profile data of the phased-array antenna are measured through a theodolite, and the three-dimensional geometric position (xn, yn, zn) of each TR assembly channel is obtained; calculating phase calibration data according to the three-dimensional geometric position (xn, yn, zn) of each TR assembly channel; performing phase calibration on the phase data measured by each TR assembly according to the phase calibration data and the antenna near-field measurement data to obtain calibrated antenna phase data, and measuring an antenna pattern according to the calibrated antenna phase data; according to the invention, high-precision extraction of the profile error of the phased-array antenna is realized, and the result of the profile error of the antenna is converted into the phase error value of the antenna, so that the phase error value is substituted into an antenna near-field calibration system, and the problem of high-precision trimming of the Ku-band satellite-borne phased-array antenna is solved.

This application relates to the field of communication technologies, and provides an antenna, an antenna feeder system, and a base station, to provide an antenna that can balance a beamforming capability and safety. The antenna includes a first antenna array and a second antenna array. The first antenna array and the second antenna array can rotate relative to each other. Therefore, the antenna provided in this application can balance the beamforming capability and safety in different wind force conditions by reducing an antenna surface area of the antenna.

This utility model discloses a carbon fiber antenna reflector surface processing device, relating to the field of antenna manufacturing technology. It aims to solve the technical problem that the special design of shark fin antenna reflectors often leads to incomplete polishing and damage to the antenna surface during polishing. The polishing device includes a mounting base, inside which a drive motor is fixedly installed. A rotating rod is fixedly installed at the output end of the drive motor. This utility model, through the spring seat in the mounting groove of the base, provides the polishing block with a telescopic function. When the polishing block contacts the shark fin edge reflector surface, it can automatically conform to the reflector surface at different positions. This utility model has the advantages of flexibly adjusting the contact position with the reflector surface, expanding the polishing range, and improving the polishing effect.

A method for accuracy simulation analysis of a multi-camera rapid surface measurement system effectively solves the problem of accuracy simulation analysis for such systems. It enables the planning, design, and evaluation of the measurement mesh for the system, using the optimal mesh parameters as a reference to guide the on-site construction of the system and ensure accurate measurement of antenna surfaces. The method involves first building simulation analysis software; then, combining the actual on-site measurement environment, the software simulates and analyzes different measurement meshes; next, the rapid surface measurement system is constructed; finally, data is collected and analyzed, and the simulation software is used to perform accuracy simulation analysis of the multi-camera rapid surface measurement system, ensuring accurate measurement. This invention offers low measurement cost, saves manpower and resources, has high measurement speed and accuracy, and has practical application and promotion value.

The invention discloses a double-frequency patch antenna, and belongs to the technical field of antennas. A radiation patch of the dual-frequency patch comprises a rectangular radiation patch and two rectangular radiation branches, wherein the rectangular radiation patch is provided with a second-order Hilbert fractal groove; the grounding plate is spliced on the lower surface of the dielectric substrate, one end close to the radiation patch is provided with symmetrical triangular cut corners, and the middle part is provided with a rectangular area cut corner; and one end of the T-shaped microstrip feeder line is connected with one end of the rectangular radiation patch close to the rectangular radiation branch knot. By introducing a second-order Hilbert fractal slot, two resonant frequencies of low frequency 2.4 GHz and high frequency 5.5 GHz can be generated; by introducing a defect structure into the grounding plate, the low-frequency bandwidth can be improved; a rectangular branch knot is introduced into the radiation patch, so that the high-frequency bandwidth is increased. On the basis of ensuring the bandwidth of the antenna, the introduced antenna meandering flow technology increases the current path on the surface of the antenna, and the bandwidth is increased under the condition that the area of the antenna is not increased.

The present disclosure relates to an antenna device and an electronic device. The antenna device includes an antenna module configured to communicate at a given communication frequency; a base body having an electrically conductive property, having a first surface, and having a first recess formed in the first surface and configured to accommodate the antenna module; a dielectric radome having a second surface opposite to the first surface of the base body, and having a second recess formed in the second surface and configured to be opposite to the first recess; and a waterproof structure disposed between the first surface of the base body and the second surface of the radome, and configured to waterproof the antenna module. The antenna module includes one or more antenna elements and an antenna surface on which the one or more antenna elements are formed. The antenna module is accommodated in the first recess such that the antenna surface protrudes from the first surface into the second recess.

The utility model discloses a waveguide slot antenna surface treatment device which comprises a base, a support, a cleaning assembly, a supporting plate and a driving assembly. The support and the driving assembly are fixed to the base. The cleaning assembly is arranged on the support. The supporting plate is provided with the antenna, connected with the driving assembly and driven by the driving assembly to move left and right. The processing assemblies include a first processing assembly and a second processing assembly. The first processing assembly comprises a first connecting shaft, a mounting box, a chain wheel and a chain, one end of the first connecting shaft is connected with the support, the other end of the first connecting shaft is connected with the mounting box, the chain wheel and the chain are arranged in the box and rotate to drive the chain, and a first brush on the chain processes the antenna surface. The second processing assembly comprises a second connecting shaft, one end of the second connecting shaft is rotationally connected with the support, and a lower-end rotating disc is provided with a second brush processing antenna side face. The device automatically moves the antenna, realizes omnibearing processing on the surface of the antenna, and ensures the processing quality.

An antenna device including: an antenna module for performing communication at a predetermined communication frequency; a base having conductivity, the base including a first surface and a first recess, the first recess accommodating the antenna module and being disposed on the first surface; a radome that is a dielectric, the radome including a second surface facing the first surface of the base and a second recess which faces the first recess and is disposed on the second surface; and a waterproof structure for waterproofing the antenna module, the waterproof structure being disposed between the first surface and the second surface. The antenna module includes one or a plurality of antenna elements, and an antenna surface on which the one or plurality of antenna elements are disposed. The antenna module is accommodated in the first recess to cause the antenna surface to project from the first surface into the second recess.