40 results about "Dipole radiation" patented technology

A low-band radiator comprises: a radiation substrate; a first dipole radiation portion formed from a conductor line on one surface of the radiation substrate and comprising two first loop arms each having the length extending in a predetermined first direction and formed in a loop shape having one end open; a second dipole radiation portion formed from a conductor line on one surface of the radiation surface, comprising two second loop arms each having the length extending in a predetermined second direction and formed in a loop shape having one end open, and disposed so as to intersect the first dipole radiation portion; and a balun portion coupled to the other surface of the radiation substrate and applying power feeding signals, respectively corresponding to the first and second loop arms, to two open ends of the loops.A low-band radiator comprises: a radiation substrate; a first dipole radiation portion formed from a conductor line on one surface of the radiation substrate and comprising two first loop arms each having the length extending in a predetermined first direction and formed in a loop shape having one end open; a second dipole radiation portion formed from a conductor line on one surface of the radiation surface, comprising two second loop arms each having the length extending in a predetermined second direction and formed in a loop shape having one end open, and disposed so as to intersect the first dipole radiation portion; and a balun portion coupled to the other surface of the radiation substrate and applying power feeding signals, respectively corresponding to the first and second loop arms, to two open ends of the loops.

The invention relates to an ultra-wideband frequency reconfigurable tight coupling dipole array with wide beam scanning. The ultra-wideband frequency reconfigurable tight coupling dipole array comprises a plurality of antenna units, the antenna unit comprises a tight coupling dipole radiation unit, a reconfigurable layer, a wide-angle impedance matching structure, a feed structure and a metal floor; the wide-angle impedance matching structure, the tight coupling dipole radiation unit and the feed structure are sequentially located on the first dielectric plate from top to bottom, and the first dielectric plate is placed perpendicular to the horizontal plane. The reconfigurable layer, the metal floor and the first dielectric plate are vertically arranged in an intersecting mode, and the reconfigurable layer is located above the metal floor. The reconfigurable layer and the double-layer double-sided capacitor loading ring structure are used for achieving the frequency reconfigurable function of the ultra-wideband array, and meanwhile the high radiation efficiency and the large-angle scanning capacity of the ultra-wideband array are effectively guaranteed. In addition, the invention also designs a feed structure containing a capacitor loading short-circuit pin, so that no common-mode resonance in the working frequency band of the ultra wide band is ensured.

Base station antennas include a reflector; a first plurality of cross-dipole radiating elements that are arranged as a first array of cross-dipole radiating elements, each cross-dipole radiating element comprising a first dipole radiator having a first dipole arm and a second dipole arm and a second dipole radiator having a third dipole arm and a fourth dipole arm; and a plurality of parasitic monopole elements that are associated with a first of the cross-dipole radiating elements, each parasitic monopole element including a monopole radiator, wherein at least half of each monopole radiator is positioned within a footprint of the first and second dipole radiators of the first of the cross-dipole radiating elements when the first of the cross-dipole radiating elements is viewed from the front.

An antenna structure and an electronic device are provided. The antenna structure is disposed on a carrier of the electronic device and includes a first dipole radiating element perpendicular to a plane, a second dipole radiating element connected to the first dipole radiating element, and a third dipole radiating element connected to the first dipole radiating element and the second dipole radiating element. The first dipole radiating element is configured to generate a first radiation pattern, the second dipole radiating element is configured to generate a second radiation pattern, and the third radiating element is configured to generate a third radiation pattern. The first radiation pattern is omnidirectional radiation on the plane. A polarization direction of the second radiation pattern and a polarization direction of the third radiation pattern are respectively orthogonal to a polarization direction of the first radiation pattern.

Radiating elements comprise a first dipole radiator that includes a first dipole arm and a second dipole arm, a second dipole radiator that includes a third dipole arm and a fourth dipole arm and first through fourth electromagnetic bandgap structures that are coupled to distal end portions of the respective first through fourth dipole arms.

Radiating elements comprise a feed column, a first dipole radiator that includes a first dipole arm and a second dipole arm that are connected to the feed column, and a second dipole radiator that includes a third dipole arm and a fourth dipole arm that are connected to the feed column. The feed column, the first dipole radiator and the second dipole radiator are formed as a monolithic structure.

The invention belongs to the technical field of microwave antennas, and particularly provides an ultra-low-profile wide-angle scanning ultra-wideband tight coupling phased-array antenna based on double mountain-shaped dipoles. The ultra-wideband antenna comprises an ultra-low-profile wide-angle scanning ultra-wideband radiation structure (I) based on double-E-shaped dipoles, namely an improved double-E-shaped dipole radiation structure; a feed strip line and a balun structure (II), namely a strip line feeder using a gradually changed defected ground on a vertical plane and a balun structure at the tail end; and the feed microstrip line structure (III) is a microstrip line feeder line on a horizontal plane. According to the invention, the improved double-E-shaped radiation structure is applied to the tightly-coupled antenna, which is equivalent to the introduction of a plurality of LC parallel matching branches in a unit aperture, so that the impedance matching of an array can be greatly improved, especially the impedance matching of low frequency is improved, the low-frequency bandwidth is expanded, and the scanning capability is improved at the same time.

The invention relates to the technical field of antennas, in particular to a dual-circularly-polarized antenna unit and a satellite-borne phased-array antenna, and the dual-circularly-polarized antenna unit comprises a single-layer feed dielectric plate; and two feed ports. A four-feed-point power division network circuit; a 3dB bridge circuit; the dipole radiation unit comprises a radiation panel which is in a plate shape as a whole; the radiation arm is arranged at the edge of the radiation panel, and the radiation arm is arranged in a bending manner; the upper end of each feed pin is connected to the radiation panel, and the lower end of each feed pin is connected to the corresponding bonding pad outlet. According to the dipole antenna, the single-layer feed dielectric plate is arranged, the four-point feed power division network circuit and the first microstrip line and the feeder line of the 3dB bridge circuit are subjected to snakelike routing design and miniaturization processing, and the radiation arms of the dipole radiation units are also subjected to three-dimensional folding miniaturization arrangement, so that the height and the radiation aperture of the dipole antenna are reduced; the height of the antenna is only 0.125 wavelengths of a central frequency point.

A cross-polarized dipole radiating element includes: (i) a substrate having a quad-arrangement of radiating arms on a forward-facing surface thereof, and a radio-frequency (RF) coupled loop on a rear-facing surface thereof, and (ii) a feed stalk electrically coupled to the quad-arrangement of radiating arms. The RF coupled loop can include a quad-arrangement of rear-facing coupling elements, which extend opposite corresponding ones of the quad-arrangement of radiating arms, and a quad-arrangement of metal traces, which are configured to electrically couple the quad-arrangement of coupling elements together into a closed electrical loop.

The invention discloses a dual-port coaxial feed circular polarization magnetoelectric dipole antenna, and belongs to the technical field of millimeter wave satellite communication antennas. The antenna comprises a first metal patch layer, a dielectric substrate a, a second metal patch layer, a dielectric substrate b and a metal ground which are sequentially stacked from top to bottom, the second metal patch layer comprises four radiation patches which are arranged in a rectangular array, and each radiation patch is composed of a square patch and a circular ring patch at an inner corner; a metal through hole is formed in the dielectric substrate and is connected with the radiation patch and the metal ground, so that a magnetoelectric dipole radiation path is formed; the first metal patch layer is provided with a probe patch a, the center of the second metal patch layer is provided with a probe patch b, and the probe patch a and the probe patch b form two space orthogonal inverted L-shaped feed probes through a short column and a long column respectively; and the inner conductors of the two feed ports are respectively connected with the long columns of the two probes. The antenna has the advantages of wide impedance bandwidth, wide beam coverage, low profile and easy integration, and is suitable for a low-orbit satellite communication terminal.

The invention discloses a system-integrated dipole antenna and a manufacturing method thereof, and relates to the technical field of antenna design, and the system-integrated dipole antenna comprises a dipole radiation module which is used for achieving the energy conversion between a radio frequency signal and a space electromagnetic wave; an integrated balun module and a transceiver circuit module are arranged on the circuit board; the integrated balun module is connected with the two metal radiation arms of the dipole radiation module through feeding points. The transmit-receive circuit module is electrically connected with the integrated Balun module, and performs signal transmission with the dipole radiation module through the integrated Balun module. Compared with a traditional separated antenna and a system architecture of a radio frequency front end, the system integrated dipole antenna realizes balance feed and differential interface integration, energy loss and the size of the system integrated dipole antenna are remarkably reduced, and the integration level and reliability of the system integrated dipole antenna are remarkably improved.

The invention relates to the field of low-scattering array antennas, in particular to a conformal dual-polarization low-scattering array antenna. According to the scheme, the antenna comprises a dielectric substrate 1, a dipole radiation patch 2, a parasitic patch 3, a wave-absorbing material 4, a feed balun 5 and a metal floor 6, the dielectric substrate 1 and an outer skin of a platform are conformal, the dipole radiation patch 2 subjected to modification and hollowing treatment is printed on the upper surface of the dielectric substrate 1, the parasitic patch 3 is printed on the lower surface of the dielectric substrate 1, and the dielectric substrate 1 is printed on the dielectric substrate 1. The wave-absorbing material 4 is attached to the lower surface of the dielectric substrate 1 and is conformal with the dielectric substrate 1, and the feed balun 5 penetrates through the dielectric substrate 1, the wave-absorbing material 4 and the metal floor 6 and is connected with radiation arms on the two sides of the dipole radiation patch 2 respectively. According to the invention, the antenna scattering can be effectively reduced by shaping and hollowing out the dipole radiation patch, and the standing wave performance can be improved and the scattering can be reduced by loading the parasitic structure and the wave-absorbing material in the space below the dielectric substrate. The method is suitable for the stealth platform.

Antennas include a first radiating element that is configured to operate in a first operating frequency band, and a second radiating element that is configured to operate in a second operating frequency band that encompasses higher frequencies than the first operating frequency band. The first radiating element includes a first dipole radiator having first and second dipole arms and a second dipole radiator having third and fourth dipole arms. The first dipole arm includes a first metal region that substantially surrounds a first non-metal interior region, and the first non-metal interior region is configured so that currents induced on a first portion of the first metal region by RF energy emitted by the second radiating element substantially cancel currents induced on a second portion of the first metal region by the RF energy emitted by the second radiating element.

The application provides a high-gain dual-polarized dipole antenna, which comprises a first dielectric plate, a second dielectric plate, a reflecting plate, a first coaxial cable, a second coaxial cable, a first 1:2 power divider, a second 1:2 power divider, an antenna radiator and four feed baluns; the first dielectric plate is arranged in parallel above the middle part of the second dielectric plate, the reflecting plate is printed on the lower surface of the second dielectric plate, and the first 1:2 power divider and the second 1:2 power divider are printed on the upper surface of the second dielectric plate; the antenna radiator is printed on the upper surface of the first dielectric plate and comprises four dipole radiation arms; the four feed baluns are arranged between the first dielectric plate and the second dielectric plate, and one feed balun is arranged below every adjacent two dipole radiation arms in the circumferential direction. The application realizes wide bandwidth, high gain and good directional radiation performance through a simple and compact structure.

An antenna and a communication device are disclosed, and relate to the field of communication device technologies. The antenna includes a ground plane and at least one group of antenna elements disposed on the ground plane. One group of antenna elements include two dipole radiation arms and two monopole radiation arms. A feed point is provided on the dipole radiation arms and / or the monopole radiation arms. The dipole radiation arms are provided with a support structure. For a same group of antenna elements, both the two dipole radiation arms are disposed in parallel to the ground plane via the support structure; both the two monopole radiation arms are vertically disposed on the ground plane; and both the two dipole radiation arms are located between the two monopole radiation arms, and the two dipole radiation arms and the two monopole radiation arms are in a same plane.

The invention relates to an antenna structure of an automobile tire pressure sensor, and the antenna structure comprises a radiation section which is of a spiral coil structure and is configured to be in a normal mode radiation mode under the working frequency and generate an electric dipole radiation field and an equivalent magnetic dipole radiation field at the same time, and the phases of the two radiation components are the same. The limitation of a single radiation mode of a traditional loop antenna is broken through, the symmetrical spiral dipole structure is adopted, the antenna can excite electric dipole radiation and equivalent magnetic dipole radiation at the same time, the two radiation components are the same in phase, far fields are overlapped in the same phase, and the radiation gain of the antenna is remarkably higher than that of the traditional loop antenna. The radiation gain can be effectively improved, the TPMS signal transmission reliability is greatly improved, and the packet loss rate is reduced.

The tight coupling dipole antenna array comprises four metal layers and dielectric substrates among the metal layers, the first metal layer and the second metal layer are provided with tight coupling dipole radiation patches, each tight coupling dipole radiation patch is connected with an auxiliary log-periodic dipole oscillator arm, and the auxiliary log-periodic dipole oscillator arms are connected with the dielectric substrates. The radiation patches and the oscillator arms on the two metal layers are arranged in a manner of rotational symmetry about the center line of the antenna array element, the radiation patches of the adjacent antenna array elements are overlapped, and equivalent capacitance is introduced in a coupling manner; the third metal layer and the fourth metal layer are located between the first metal layer and the second metal layer and provided with a balanced feed balun, and impedance conversion and reverse feed direction are achieved through microstrip line-to-dielectric double lines with gradually-changed ground. According to the invention, the expected ultra-wideband radiation characteristic is realized through cooperation of the tight coupling dipole radiation patch and the auxiliary log-periodic dipole oscillator arms, additional structures such as a wide-angle matching layer or a frequency selection surface are prevented from being used, and the design cost and the implementation cost are reduced.

Base station antennas are provided that comprise a reflector and a first array of first frequency band radiating elements that are mounted to extend forwardly from the reflector. Each first frequency band radiating element includes first and second dipole radiators and a meta material lens that is mounted forwardly of the first and second dipole radiators.

Base station antennas include a reflector; a first plurality of cross-dipole radiating elements that are arranged as a first array of cross-dipole radiating elements, each cross-dipole radiating element comprising a first dipole radiator having a first dipole arm and a second dipole arm and a second dipole radiator having a third dipole arm and a fourth dipole arm; and a plurality of parasitic monopole elements that are associated with a first of the cross-dipole radiating elements, each parasitic monopole element including a monopole radiator, wherein at least half of each monopole radiator is positioned within a footprint of the first and second dipole radiators of the first of the cross-dipole radiating elements when the first of the cross-dipole radiating elements is viewed from the front.

The invention discloses a four-direction pattern reconfigurable antenna. The antenna is of a rotational symmetric structure composed of a single-layer dielectric substrate and a double-layer four-direction radiation structure. The antenna takes an electric dipole structure as a basic radiation structure, directional radiation of the antenna is realized by introducing a reflection structure, radiation gain of the antenna is improved by introducing a guide structure, impedance matching of the antenna is improved and bandwidth of the antenna is broadened by adding a U-shaped groove structure in the electric dipole radiation structure, and in order to realize reconfiguration of a directional diagram of the antenna, the antenna is provided with a U-shaped groove structure. An antenna structure is rotated, four pairs of PIN diodes and corresponding control circuits are added in parallel double lines of a feed structure, and the radiation direction of the antenna is controlled by controlling the opening and closing states of the PIN diode pairs. Due to introduction of the reflection structure and the guide structure, the directional radiation capability and the antenna gain of the antenna are improved, the communication distance is increased, and the working bandwidth of the antenna can be widened; the design of the direct-current feed structure enables the radiation direction of the antenna to be controlled more flexibly.

A radiating element comprises a feed stalk, a first dipole radiator that comprises a first dipole arm and a second dipole arm, and a second dipole radiator that comprises a third dipole arm and a fourth dipole arm. The first and second dipole radiators are mounted adjacent a forward end of the feed stalk, and the first dipole arm comprises a meandered conductive trace that overlaps a plurality of conductive patches in the forward direction.

The invention provides a broadband wide-angle tight coupling dipole array antenna working at a Ka wave band. The broadband wide-angle tight coupling dipole array antenna is composed of a plurality of antenna units arranged in a matrix mode. Each unit comprises a single-layer Rogers 5880 dielectric substrate, a bottom-layer metal floor, an upper-layer wide-angle matching layer and a tight dipole radiation layer; wherein the tail ends of vibration arms of the bow-tie-type dipole units are mutually overlapped to enhance coupling, the hyperbolic impedance transformers realize conversion from unbalance to balance and broadband matching, the short-circuit metal wires inhibit common-mode resonance, and the wide-angle matching layer is a frequency selective surface formed by rectangular metal patches. Passive edge units are additionally arranged on the two sides of the array, outer side short-circuit lines are removed to slow down the truncation effect, the metal wall and the floor are integrally machined, the active standing-wave ratio within 27.5-35 GHz is smaller than or equal to 2.1 when + / -50-degree scanning is supported, and the efficiency is larger than or equal to 80%. The antenna has the advantages of low profile, high integration, wide bandwidth angle and high radiation efficiency, and is suitable for a millimeter wave communication system.

The invention discloses a low-profile wide-angle scanning tight coupling array antenna loaded with resistive rings, and aims to solve the technical problem that the existing low-profile tight coupling array antenna cannot simultaneously realize the comprehensive performance of ultra wide band and wide-angle scanning. The upper surface of a dielectric block in the low-profile wide-angle scanning tight coupling array antenna is a metasurface, a first dielectric plate is inserted into the lower portion of the dielectric block, a dipole is printed on the upper surface of the first dielectric plate, resistive rings are arranged on the two sides of the dipole respectively, a parasitic patch is printed on the lower surface of the first dielectric plate, and the parasitic patch is printed on the lower surface of the dielectric block. The strip-shaped Marchand balun is arranged perpendicular to the floor, and the upper portion of the Marchand balun is connected with the dipole. The resistive ring is introduced into the dipole radiation array plane, so that the variation amplitude of input impedance in a broadband is slowed down, the maximum scanning angles of the E plane and the H plane of the formed phased-array antenna array reach + / -60 degrees, the active standing-wave ratio is smaller than 3, the unit profile height is only 0.062 lambda 1, and the low profile requirement is met.

The invention discloses an antenna structure and an electronic device. The antenna structure is arranged on a carrier of the electronic device; the antenna structure comprises a first dipole radiation part, a second dipole radiation part and a third dipole radiation part. The first dipole radiation part is perpendicular to a plane; the second dipole radiation part is connected to the first dipole radiation part; the third dipole radiation part is connected to the first dipole radiation part and the second dipole radiation part; the first dipole radiation part is used for generating a first radiation field pattern, the second dipole radiation part is used for generating a second radiation field pattern, and the third dipole radiation part is used for generating a third radiation field pattern; the first radiation field pattern is omnidirectional radiation on a plane; the polarization direction of the second radiation pattern is orthogonal to the polarization direction of the first radiation pattern, and the polarization direction of the third radiation pattern is orthogonal to the polarization direction of the first radiation pattern. According to the antenna structure and the electronic device provided by the invention, the first radiation field pattern generated by the first dipole radiation part cannot be influenced by the other two dipole radiation parts, and the omnidirectional radiation characteristic can be maintained.

The present application relates to the field of low scattering array antenna, and particularly relates to a conformal dual-polarized low scattering array antenna. The scheme comprises a dielectric substrate 1, a dipole radiation patch 2, a parasitic patch 3, a wave absorbing material 4, a feed balun 5, and a metal floor 6. The dielectric substrate 1 is conformal to the outer skin of a platform. The dipole radiation patch 2 is printed on the upper surface of the dielectric substrate 1 after being shaped and hollowed. The parasitic patch 3 is printed on the lower surface of the dielectric substrate 1. The wave absorbing material 4 is attached to the lower surface of the dielectric substrate 1 and is conformal to the dielectric substrate 1. The feed balun 5 penetrates the dielectric substrate 1, the wave absorbing material 4 and the metal floor 6 and is connected to the two side radiation arms of the dipole radiation patch 2 respectively. The present application can effectively reduce the antenna scattering by shaping and hollowing the dipole radiation patch. The space below the dielectric substrate is loaded with a parasitic structure and a wave absorbing material, which can improve the standing wave performance and reduce the scattering. The present application is suitable for stealth platforms.

A cross-dipole radiating element includes a feed stalk having a base and a distal end that is positioned forwardly of the base, a first dipole radiator mounted at the distal end of the feed stalk, the first dipole radiator including a first dipole arm and a second dipole arm, and a second dipole radiator mounted at the distal end of the feed stalk, the second dipole radiator including a third dipole arm and a fourth dipole arm. The feed stalk includes a first ground line, a first signal trace that at least partially overlaps the first ground line, and a transmission line segment that extends from the first ground line and / or the first signal trace, and the transmission line segment includes a transmission line signal trace that is short-circuited to a ground conductor of the transmission line segment.

The present disclosure relates to a micro-planar coil transformer with shielding. A micro-planar coil transformer including one or more shields is disclosed. The one or more shields can block most common mode currents from passing from one side of the transformer to the other side. Reducing the common mode current passing through the transformer can result in a reduction in dipole radiation, which is a major component of electromagnetic interference (EMI) in some transformers.

A radiating element includes a feed stalk printed circuit board that comprises first and second RF transmission lines, a first dipole radiator that is coupled to the first RF transmission line and a second dipole radiator that is coupled to the second RF transmission line. The first dipole radiator comprises first and second dipole arms, and the second dipole radiator comprises third and fourth dipole arms. A first amount of coupling between the first dipole arm and the third dipole arm exceeds a second amount of coupling between the first dipole arm and the fourth dipole arm.

The application discloses a Luneberg lens antenna array applied to high-speed rail 5G communication, which comprises a cylindrical multilayer dielectric Luneberg lens and a plurality of broadband dual-polarized dipole antennas from top to bottom. The broadband dual-polarized dipole antenna comprises an impedance matching layer, a dipole radiation structure, a feed balun, a fixed plate and an aluminum reflecting plate from top to bottom. The impedance matching layer is composed of an impedance matching layer dielectric substrate and a rectangular parasitic patch arranged on the lower surface of the impedance matching layer dielectric substrate. The application aims at the demand of high-speed rail 5G signal coverage application for antennas at present, and provides a Luneberg lens antenna array applied to high-speed rail 5G communication. The beam convergence characteristics of the cylindrical Luneberg lens are utilized in the structure to narrow the horizontal plane half-power beam width of the antenna without affecting the vertical beam width of the antenna, improve the gain of the antenna and reduce the intercell interference with other base stations.

The multiband antenna comprises a relative low-frequency-band cross dipole radiation element, wherein the relative low-frequency-band cross dipole radiation element comprises a first radiation arm, a second radiation arm, a third radiation arm and a fourth radiation arm; and first to fourth relative high-band cross-dipole radiation arms in respective first to fourth openings within the first to fourth radiation arms. The first to fourth relative high-band cross-dipole radiation arms and the first to fourth radiation arms of the relative low-band cross-dipole radiation element are coplanar. The first to fourth isolation frames are disposed in the first to fourth openings, respectively. The invention provides a dielectric substrate. On the dielectric substrate: (i) the first to the fourth relative high-band cross-dipole radiation arms, (ii) the first to the fourth radiation arms of the relative low-band cross-dipole radiation element, and (iii) the first to fourth isolation frames within the first to fourth openings are respectively patterned as metallization traces.