134 results about "Helical antenna" patented technology

An external TPMS sensor for heavy-duty trucks comprises a helical antenna and a 1225 cell, and is installed outside a tire of a vehicle; and system power consumption is reduced by increasing the communication rate of the TPMS sensor, and / or decreasing the sampling period, and / or decreasing the number of data frames transmitted every time, and / or decreasing RF output power, and / or disposing an LNA circuit at an input terminal of a corresponding receiver antenna. The requirement of the TPMS sensor for a long service life is met by reducing system power consumption; the helical antenna, the matching network, and the 5 dBm chip for outputting power are used to realize miniaturization of the TPMS sensor; and the 1225 cell is used, which, compared with traditional TPMS sensors, allows the diameter of the TPMS sensor to be reduced by about 8 mm and the weight of the TPMS sensor to be reduced by over ⅓, such that miniaturization of the TPMS sensor is further realized.

The invention provides a temperature-controlled shape memory alloy helical antenna capable of automatically unfolding and a control method, and belongs to the technical field of antennae, and the antenna comprises a helical radiation unit which is made of a shape memory alloy material and is of a multi-circle helical winding structure; the edge of the metal reflection unit is warped upwards to form an annular reflection cavity, and the metal reflection unit is used for enhancing the directivity and radiation gain of the spiral radiation unit; the supporting rod is of a multi-section coaxial nested structure, is vertically mounted in the center of the metal reflection unit and is used for providing stable axial support in the contraction and expansion process of the spiral radiation unit; the dielectric disc is mounted between the supporting rod and the spiral radiation unit; the metal via hole structure penetrates through the dielectric disc and is used for connecting a coaxial cable and the radiation structure to form a complete feed path; and the impedance matching arm structure is used for connecting the feed path and the spiral radiation unit and adjusting the impedance matching relation between the feed path and the spiral radiation unit so as to realize impedance continuity and radio frequency matching.

A helix antenna and methods of making and using helix antenna to concurrently or independently radiate pulses in a very high frequency (VHF) band in a range of about 240 MHz to about 270 MHz and / or in an ultrahigh frequency (UHF) band in a range of about 360 MHz to about 380 MHz which can be useful in space to ground data transmissions, subsurface radar, and measurement of ice and snow pack.

The invention discloses an ultra-wide beam broadband four-arm helical antenna based on parasitic loading. The ultra-wide beam broadband four-arm helical antenna comprises a circular dielectric substrate, an arc parasitic radiation arm, a cylindrical support, a flexible dielectric substrate, a stepped impedance winding helical arm, a floor and a coaxial feed. The antenna can realize wide axial ratio beam width and wide half-power beam width in a working frequency band range of 2-2.5 GHz, meanwhile, the antenna has a relatively small size, the stability, the anti-interference capability and the coverage range of a wireless communication system are improved, and the antenna can flexibly cope with various complex scenes. In addition, the antenna works in a wide frequency band and has a wide 3-dB axial ratio beam width in the wide frequency band, for example, the 3-dB axial ratio beam width at a 2.2 GHz frequency point reaches 235 degrees; the 3-dB axial ratio beam width at the 2.3 GHz frequency point reaches 252 degrees; and the 3-dB axial ratio beam width at a 2.4 GHz frequency point reaches 236 degrees.

The invention provides an AI-driven multi-wireless-signal candid photographing detection device which comprises a mounting shell, a hardware acquisition layer, an edge computing layer, a cloud federation layer and a man-machine interaction layer, and all the layers achieve signal interaction through PCIe4.0 and SPI hardware interface communication protocols. The broadband patch antenna, the ceramic antenna and the helical antenna are adopted to cover a full target frequency band, the millimeter wave radar chip is matched, the 16 * 16 metamaterial RIS panel is additionally configured, and the weak signal receiving power is improved by synchronously controlling a reflection phase focusing signal, so that the problem of missing detection is solved; the multi-signal tensor decomposition unit and the CNN-LSTM signal classification unit construct frequency, intensity, time and phase four-order tensors, and overlapped signals are separated through Khatri-Rao space-time coding; a three-layer CNN and a two-layer LSTM are combined, precise classification of candid photographing signals is realized, the misjudgment rate is reduced, millimeter wave assisted precise distance measurement is combined with millimeter wave flight time data and an RSSI attenuation model, a distance measurement error is controlled through a dynamic weighting algorithm, and the problem of positioning misalignment is solved.

The invention discloses a transmitting antenna, an antenna assembly and monitoring equipment, and relates to the technical field of antennae, the transmitting antenna comprises a feeder line, a helical antenna and a reflection column; the feeder line is provided with an inner-layer conductor and an outer-layer conductor which are coaxially arranged; one end of the spiral antenna is connected with the inner-layer conductor; the reflection column extends along the axis direction of the helical antenna; one end of the reflection column is connected with the outer conductor, and the reflection column is grounded. According to the scheme, a structure formed by combining the helical antenna and the reflection column is adopted, and the advantage that the cylindrical structure of the reflection column can provide a uniform reflection surface is fully utilized, so that electromagnetic waves are reflected in all directions in a balanced manner, the balance of signal reflection at all angle positions is improved, and a uniformly distributed electromagnetic field can be formed; therefore, most of energy is restrained near the signal receiving area of the transmitting antenna, so that the balance of signal strength in each direction is improved, the stability of signal transmission is improved, and a relatively ideal signal transmission effect can be obtained.

The application discloses a kind of wideband helical antenna auxiliary vibrating rod positioning method, and the position and time information are obtained by receiving the signal sent by reference station through master control box, and then positioning is realized after processing calculation;Worker's head coordinate is collected by wideband single helix positioning antenna, and the coil number in vibrating rod is obtained by flexible antenna;Euler angle is collected by attitude angle sensor inside master control box, and the grip point coordinate is obtained by head coordinate and Euler angle, the distance from grip point to vibrating rod insertion end point is calculated, the coordinate of grip point is obtained, finally the insertion point coordinate of vibrating rod is calculated by the coordinate of grip point, this method is simple and feasible, and wideband single helix antenna provides stable positioning performance in complex signal environment, with high accuracy and high stability.

This invention provides a method for simulating and analyzing antenna power deposition efficiency and magnetic field, relating to the field of plasma engineering technology. The method includes: constructing a simulation model based on a helical antenna and plasma; constructing control equations for the simulation model; obtaining configuration information of the helical antenna and calculating corresponding physical field components based on the configuration information; the physical field includes wave magnetic field, wave electric field, and current density field; calculating physical field information at different locations based on the physical field components using the control equations; identifying the magnetic field information to generate helical wave components and TG wave components; analyzing the physical field information to obtain the influence law of performance indicators; and filtering the configuration information of the helical antenna based on the influence law of performance indicators to obtain a design scheme for the helical antenna as a plasma source, which can provide an effective ICP source design scheme.

An antenna apparatus and method of operating the antenna apparatus, can include a helical antenna comprising a helical portion raised from a printed circuit board to optimize gain and bandwidth, wherein the helical portion incorporates a limited number of turns, which facilitate control over the dimensions of the helical antenna. An antenna support can be provided, which can maintain dimensional consistency with respect to the helical antenna. The antenna support can facilitate achievement of target performance parameters for the antenna apparatus. In addition, the elevated helical portion can be configured to enhance the gain and the bandwidth without compromising the overall dimensions of the helical antenna. In some embodiments, the helical antenna may be formed from plastic.

Transport networks, network elements, and transceivers are described herein, including an input interface configured to receive an input digital bitstream; circuitry configured to generate a transmission signal based on the input digital bitstream, wherein the transmission signal is a radio frequency (RF) signal having a frequency in a Terahertz (THz) frequency band; and a bifilar helix antenna configured to transmit the transmission signal.

A flexible RFID wire tag includes an RFID chip and an associated antenna formed of a deformable filament. The antenna may be helically shaped and deformable from an initial helical configuration to an expanded helical configuration having a greater diameter. An object or a portion of an object is positioned within an open interior of the helical antenna and then the antenna is returned from the expanded configuration to the initial configuration to cause the antenna to contact and grip the object. In another aspect, first and second ends of the antenna are secured to an object, with the filament being configured to deform and / or vibrate upon being subjected to a stimulus so as to modify at least one operational parameter of the antenna. Such a deformable filament may be helical or may be differently configured, such as to be incorporated into a cardboard ticket.

Transmitters, receivers, transceivers, transport networks, and methods of use are described herein, including a transmitter comprising a client-side input, transmitter circuitry, and antennas. The client-side input receives baseband signals having client data encoded therein. The transmitter circuitry receives the baseband signals from the client-side input and generates antenna feed signals based on the baseband signals. The antennas receive the antenna feed signals from the transmitter circuitry, generate radiated signals based on the antenna feed signals, and couple the radiated signals into hollow waveguides. The radiated signals are radiated electromagnetic waves configured for coherent detection and having one or more frequencies in a range between 300 Gigahertz (GHz) and 10 Terahertz (THz). The antennas include one of a helical antenna, a waveguide probe antenna, a tapered antenna, a patch antenna, and a slot antenna.

The application discloses a kind of based on double-sided spiral wiring and low profile ultra-wideband antenna device of lossy open resonant ring loading, including double-sided spiral antenna structure, lossy open resonant ring structure, metal back cavity and balun, wherein the upper and lower surfaces of double-sided spiral antenna structure are respectively provided with Archimedes spiral arm, and are provided with the metal via hole that is connected with different levels spiral arm;The lossy open resonant ring structure is provided with annular dielectric substrate, and a circle of open resonant ring loaded with resistance is arranged on the upper surface thereof;Double-sided spiral antenna structure is located above the lossy open resonant ring structure, and both are arranged in the metal back cavity;Balun is vertically arranged in the center of metal back cavity, and the top end is respectively connected with the two spiral arms on the upper surface of circular dielectric substrate, and the bottom end is arranged on the bottom surface of metal back cavity and connected with external antenna interface through through-hole.The antenna device with improved structure has ultra-wideband, low profile, high gain, unidirectional radiation and good circular polarization characteristics.

The radio frequency device is characterized in that the radio frequency device is provided with a spiral antenna and a radio frequency module, and the first end of the spiral antenna is electrically connected with a radio frequency interface of the radio frequency module; the spiral antenna structurally comprises a core material and a spiral conductor wound and fixed on the periphery of the core material. The spiral conductor is made of a single or a plurality of bundled metallized fibers, metal wires or carbon fiber wires, and the radius of each metallized fiber, metal wire or carbon fiber wire is 1t; the frequency of the radio-frequency signal is five times of the skin depth when the radio-frequency signal is transmitted on the metallized fiber, the metal wire or the carbon fiber wire; the helical antenna has an extremely high quality factor, so that a communication distance which is several times of that of a traditional helical antenna is obtained under the same power.

The invention provides a deep sea pressure-resistant antenna which comprises a hollow base composed of a conical part and a columnar part, a feed network plate arranged at the large head end of the conical part, an antenna assembly connected to the feed network plate and a radio frequency cable with one end connected with the feed network plate and the other end led out outwards. The large-head end of the conical part is provided with an inverted-L-shaped back-off ring which shrinks inwards, an epoxy resin rubber column is buckled on the back-off ring, the antenna assembly and the feed network board are wrapped by the epoxy resin rubber column, and the epoxy resin rubber column is filled into an inner cavity of the hollow base, so that the epoxy resin rubber column is coaxial with the large-head end of the conical part. The diameter of the epoxy resin rubber column is equal to the diameter of the large head end of the conical part, the pressure resistance of the antenna can be improved, the antenna can work for a long time at the depth of 3000 meters underwater, signal receiving and transmitting of an iridium frequency band and a GNSS frequency band can be achieved through the four-arm spiral antenna, and the manufacturing method of the deep sea pressure-resistant antenna is easy to operate and implement.

To provide a system and method that allows more antennas to be present on a spacecraft while minimizing the platform volume used for antennas. [Solution] The multiband concentric helical antenna system 100 includes bases 115, 125, a first helical antenna 110, and at least a second helical antenna 120, wherein the second helical antenna is located within the first helical antenna, the first helical antenna has a first frequency band, and the second helical antenna has a second frequency band that is not the same as the first frequency band, and the first and second helical antennas are connected to the base and located within an opening in the base. The multiband helical antenna system may further include N additional antennas, which can be used as a single radiating element or in an array of radiating elements.

The utility model relates to the technical field of antennas, and discloses a simple dual-frequency antenna, which comprises an antenna reflector, four feed probes are fixedly arranged at the center of the upper end surface of the antenna reflector, antenna radiators are arranged at the upper ends of the outer walls of the four feed probes, each antenna radiator comprises a four-arm helical antenna, and the four-arm helical antennas are arranged in parallel. A feed network is arranged in the antenna reflector, and antenna frequency modulation branches are fixedly arranged at the front end and the rear end of the two sides of the upper end face of the antenna reflector. According to the utility model, the overall structure is simple and novel, and the antenna has the characteristics of miniaturization and wide frequency band without reducing the antenna performance.

The embodiment of the utility model discloses an integrated broadband detecting and receiving direction finding array, and belongs to the technical field of radio direction finding. The direction finding array comprises a shell composed of a first bottom plate and an antenna cover covering the first bottom plate, and a plurality of planar helical antennas are installed on the first bottom plate. The plurality of planar helical antennas comprise a plurality of low-frequency antennas and a plurality of high-frequency antennas, the second bottom plate is arranged on the first bottom plate, the plurality of low-frequency antennas are mounted on the first bottom plate, and the plurality of high-frequency antennas are mounted on the second bottom plate; and the antenna pedestal is arranged in the shell, is arranged on the first bottom plate and is provided with prefabricated holes corresponding to the planar helical antennas, so that the planar helical antennas are accommodated in the corresponding prefabricated holes. The direction finding array is simple in overall structure, can be rapidly installed and used, and can be suitable for wide-frequency-band detection and receiving direction finding equipment in a complex electromagnetic environment.

The invention provides a handheld terminal supporting L + S dual-mode satellite communication and a communication system. The handheld terminal supporting L + S dual-mode satellite communication comprises a terminal body, a universal processing platform, a communication module, an antenna and a battery, the general processing platform provides signal processing, data storage and interaction capabilities and is used for extracting and analyzing signal quality indexes, realizing dynamic evaluation of signal quality and providing a basis for selection of communication signals; the communication module comprises an L-band communication module and an S-band communication module which are respectively used for receiving and processing a low-orbit satellite signal and a high-orbit satellite signal; the antenna comprises an L-band four-arm helical antenna and an S-band eight-arm helical antenna which are respectively used for receiving corresponding satellite signals; and the battery is used for supplying power to the universal processing platform and the communication module. Through the L + S dual-mode design, high-orbit satellite signals and low-orbit satellite signals can be received and processed at the same time, and communication signals can be automatically selected according to the signal quality.

The present invention provides a helical antenna device, comprising an extension rod, a base, an upper bracket, a flexible support tube, a helical antenna, and a locking device. The extension rod comprises a first connecting tube, a multi-stage retractable and deployable tubular structure, and a second connecting tube, connected sequentially from top to bottom. The multi-stage retractable and deployable tubular structure comprises multiple retractable and deployable tubes, adjacent retractable and deployable tubes being connected via a third connecting tube. The retractable and deployable tubes comprise multiple drive plates, which are arranged in a circle to form the drive tube. The drive plates are made of a shape memory polymer composite material. The extension rod has upper and lower ends connected to the upper bracket and the base, respectively. The flexible support tube is coaxial with the extension rod and has upper and lower ends connected to the upper bracket and the base, respectively. The helical antenna is wound around the flexible support tube. The locking device is used to lock and release the extension rod and the base. The device of the present invention can simultaneously achieve low impact, high controllability, and high reliability during the deployment process, as well as high rigidity after deployment.

Wireless audio receiver devices are described. In an embodiment, a wireless audio receiver device includes a first helical (helix wound) receive antenna and a second helical receive antenna, a printed circuit board (PCB) comprising receiver circuitry coupled to the first helical receive antenna and the second helical receive antenna, a first audio driver and a second audio driver, a first audio lead wire connected to the PCB and to the first audio driver and passing through the windings of the first helical antenna, and a second audio lead wire connected to the PCB and to the second audio driver and passing through the windings of the second helical antenna.

An antenna designed for receiving satellite signals (e.g., GNSS or SDARS) comprises a first dielectric substrate having a conductive ground plane layer on a lower surface. A second dielectric substrate is arranged opposite an upper surface of the first dielectric substrate, with a first and a second helical antenna element embedded on an upper surface of the second dielectric substrate, each having origin ends separated by a gap. A plurality of conductive spots are arranged on at least one of the first or the second dielectric substrates between the upper surface of the first dielectric substrate and a lower surface of the second dielectric substrate.A multitude of conductive vias extend through the first dielectric substrate, connecting the conductive areas to the ground plane. A first and a second RF transmission line are each coupled to the origin ends.

The application discloses a kind of inductively coupled plasma micro-propeller of double antenna structure, and its discharge system includes gas source, air inlet valve, antenna, discharge tube and radio frequency power supply.Gas source is directly connected with discharge tube by valve, wherein the valve can control the air intake during discharge;Then two identical helical antennas are connected in series at a certain distance and are wound on the same discharge tube, the output end of radio frequency power supply is connected to the end of antenna away from air inlet through impedance matcher, and the other end of radio frequency power supply and antenna is connected to the same ground.The application has simple structure, small space size and mass, and only needs to work stably at low power and low air intake, realizing micro-newton to millinewton level thrust.It is suitable for equipping in most of the current constellation micro-satellites without propulsion system of nanosatellite and cubic satellite.In addition, the length and spacing of the two antennas in the system are adjustable, and the size of the propeller can be adjusted according to the specific requirements of micro-satellite.

The present disclosure provides a helical antenna. The helical antenna includes a feeder board and four radiation components. The four radiation components are electrically coupled with the feeder board, respectively. A dielectric space is formed among the feeder board and the four radiation components. The four radiation components are circularly arranged at intervals, and any cross-section of the four radiation components parallel to a top surface of the feeder board is circular. Each of the four radiation components includes a feeding unit and a radiation portion. The feeding unit is electrically coupled between the radiation portion and the feeder board. The radiation portion is configured to transmit and receive a wireless signal in a first frequency band. An end of the radiation portion is in connection with the short circuit portion, and the other end of the radiation portion is in connection with the feeding portion.

The invention relates to the technical field of wireless communication, and particularly discloses a four-arm helical antenna. The antenna comprises a metal floor, a supporting medium and a radiation assembly which are sequentially arranged, wherein the radiation assembly is innovatively combined by a spiral arm structure and a top loading patch. The spiral arm is integrated on the surface of the supporting medium in a precise winding mode, the top end loading patches are printed on the upper surface and the lower surface of the circular medium substrate through a double-face copper-clad structure, and electrical connection is innovatively achieved through a three-dimensional interconnection structure. Four sets of metalized through holes in the outer side complete coupling connection of the patches and the spiral arm. The two groups of metalized through holes on the inner side are connected with an outer conductor of a coaxial feeder line, and the central metalized through hole is directly communicated with an inner conductor of the feeder line. According to the antenna, through unique spatial layout and impedance matching design, a complex feed network is not needed, the matching characteristic is good, the low-elevation radiation characteristic is good, the azimuth plane has the omnidirectional radiation characteristic, and the antenna is suitable for wireless systems needing full-space coverage such as satellite communication and navigation positioning.

A miniaturized four-arm spiral antenna for a portable UHF RFID device, comprising a dielectric cylinder, four groups of spiral arms and a one-to-four feed network. The four groups of spiral arms are wound around the outer surface of the dielectric cylinder along the axis. The one-to-four feed network has two layers of dielectric substrates. A one-to-two feed network is respectively arranged on the upper surface of the upper dielectric substrate and the lower surface of the lower dielectric substrate. A grounding line is arranged between the two layers of dielectric substrates. The spiral arm includes an L-shaped radiation branch and a short-circuit branch. The L-shaped radiation branches of two groups of spiral arms are connected to the upper one-to-two feed network, and the L-shaped radiation branches of the other two groups of spiral arms are connected to the lower one-to-two feed network. The short-circuit branch is connected to the grounding line. The one-to-four feed network sequentially provides phase differences of 0, -90, -180 and -270 degrees for the four groups of spiral arms, so as to form circular polarization. The miniaturized four-arm spiral antenna has the advantages of miniaturization, high gain and wide beamwidth.

This invention belongs to the field of metal additive manufacturing technology, specifically relating to an integrated, high-performance direct forming method for helical antenna metal support structures in communication and navigation equipment. Starting with the pretreatment of the substrate and powder, this invention utilizes a system based on Q-switching of a quasi-continuous-wave laser to achieve pulsed / continuous laser switching, combining continuous laser main forming with pulsed laser auxiliary control. Through precise timing and energy coordination, the process simultaneously optimizes microstructure, controls defects, and optimizes stress during forming, ultimately directly obtaining a high-quality helical antenna support without relying on post-heat treatment to adjust performance. This invention features a simple and controllable process, yields products with excellent performance, and is suitable for industrial application.

The invention provides a helical antenna device and a signal tracking method thereof, and the helical antenna device comprises a pedestal; the supporting rod is arranged on the base in a rotatable manner; the helical antenna is wound on the supporting rod, one end of the helical antenna is connected with the supporting rod, and the other end of the helical antenna is connected with the base; the spiral coil number and the spiral diameter of the spiral antenna can be changed along with rotation of the supporting rod. The device can change the spiral coil number and the spiral diameter of the spiral antenna by rotating the supporting rod so as to change the directional diagram of the spiral antenna, and is used for tracking the transit pitch angle of the aircraft, so that the maximum gain radiation direction of the spiral antenna can always point to the transit pitch angle of the aircraft; and the communication link quality between the helical antenna and the aircraft is ensured.

The invention provides a preparation method of a heating module, the heating module and an electronic smoking set, and the preparation method of the heating module comprises the steps: providing an insulating layer which is provided with a first surface and a second surface opposite to each other in the thickness direction; providing an electromagnetic wave radiation assembly, and arranging the electromagnetic wave radiation assembly on the first surface; and the insulating layer and the electromagnetic wave radiation assembly are wound together, so that the electromagnetic wave radiation assembly forms a spiral antenna structure, and the spiral antenna structure forms an electromagnetic resonant cavity. The preparation method of the heating module can effectively reduce the volume of the heating module and improve the mechanical reliability.

The leaky coaxial cable comprises a cable body and a three-dimensional spiral antenna arranged at the tail end of the cable body, the cable body comprises a sheath, an outer conductor, an insulating layer and an inner conductor, and the insulating layer, the outer conductor and the sheath are sequentially arranged on the outer side of the inner conductor; wherein the outer conductor is provided with a plurality of spiral slotted holes along the axial direction, and the spiral slotted holes are periodically arranged. According to the invention, the outer conductor is provided with the spiral slotted hole structure, so that the outer conductor has stronger radiation signal intensity and more uniform signal coverage, thereby reducing signal blind areas in a closed space, enabling the outer conductor to have stronger radiation signal intensity and more uniform signal coverage, reducing signal blind areas in the closed space, and improving the signal transmission efficiency. Meanwhile, the three-dimensional helical antenna is arranged at the tail end of the leaky coaxial cable of the cable body, thereby increasing the signal radiation distance and enlarging the signal radiation range.