731 results about "Dipole antenna" patented technology

An aspect of the present invention is an antenna pattern used in a UHF-band RFID inlay. The antenna pattern includes a first element and a second element. The first element is formed to include a loop portion and an emission portion. The loop portion includes a pair of electric power supply portions. The emission portion is connected to the loop portion, and extends line-symmetrically from the loop portion. The emission portion operates as a dipole antenna to emit a radio wave whose half wavelength is a first length. The second element is formed apart from the first element. The second element operates as a dipole antenna by electromagnetic coupling with the first element to emit a radio wave whose half wavelength is a second length. The second length is different from the first length.

An RFID tag including an inlay that is thin and easy to manufacture. The above problem is solved by an RFID tag including an inlay in which an IC chip and an antenna are provided on a base material having a main surface, wherein the antenna includes a loop conductive portion having both end portions connected to the IC chip so as to form a loop shape through the IC chip, and a dipole antenna portion disposed to surround the loop conductive portion with an interval allowing inductive coupling, and the loop conductive portion and the dipole antenna portion are formed on the main surface to have same thickness based on the main surface, and the IC chip is disposed on both end portions of the loop conductive portion.

Aspects of this disclosure relate to an antenna array. An antenna array may include a first circularly polarized dipole antenna that includes a first pair of conductive elements. The antenna array may include a second circularly polarized dipole antenna that includes a second pair conductive elements, the second pair of conductive elements being geometrically orthogonal to the first pair of conductive elements. The antenna array may include a beamformer integrated circuit configured to drive the second circularly polarized dipole antenna such that the second circularly polarized dipole antenna transmits a first radio frequency signal while the first circularly polarized dipole antenna receives a second radio frequency signal. The first radio frequency signal can have a different polarization and be in a different frequency band than the second radio frequency signal.

The invention relates to a miniaturized millimeter wave filtering magnetoelectric dipole antenna with high out-of-band rejection, and relates to the technical field of communication antennae, and the miniaturized millimeter wave filtering magnetoelectric dipole antenna with the high out-of-band rejection effect comprises a strip line feed structure which is used for generating a lower stop band radiation zero point; the n-shaped feed structure is used for feeding the magnetoelectric dipole; according to the magnetoelectric dipole radiator, a U-shaped groove is etched in a dipole patch, so that the size of the antenna is reduced; the parasitic metal strips are used for enhancing the radiation suppression effect of the upper stop band; the folding split rings are folded to reduce the size of the split rings and enhance the radiation suppression effect of the lower stop band at the same time; the inverted L-shaped short circuit branch is used for enhancing the radiation suppression effect of the upper stop band, the absolute bandwidth of the antenna is 21.1 GHz to 31.0 GHz, the relative bandwidth is 37.0%, the lowest gain is 5.0 dBi, the highest gain can reach 7.8 dBi, the suppression level from the in-band highest gain to the radiation zero point of the upper stop band is larger than 40 dBi, and the suppression level from the in-band highest gain to the radiation zero point of the lower stop band is larger than 50.0 dBi.

The broadband dual-polarization magnetoelectric dipole antenna comprises a first dielectric layer and a second dielectric layer arranged below the first dielectric layer, and the first dielectric layer and the second dielectric layer are connected through a bonding layer to serve as an antenna substrate for supporting a magnetoelectric dipole unit. The magnetoelectric dipole unit comprises metal patches and magnetic dipoles, the metal patches and the magnetic dipoles are used as electric dipoles and magnetic dipoles, the magnetic dipoles penetrate through the first dielectric layer and are arranged on the lower side of the second dielectric layer, and the four metal patches are annularly and uniformly arranged on the upper side face of the first dielectric layer; the shape of the metal patch is a rectangle with semi-elliptical chamfers on two side edges of the outer edge; any metal patch is coupled with two gain patches arranged on the first dielectric layer, and the gain patches are circular. The problem that in the prior art, a magnetoelectric dipole antenna is poor in impedance bandwidth capacity, and therefore the requirement of people for the network information transmission speed cannot be met is solved.

Aspects of this disclosure relate to an antenna cell. An antenna cell may include a first circularly polarized dipole antenna that includes a first pair of differently fed conductive elements, the first circularly polarized dipole antenna being right hand circularly polarized. The antenna cell may include a second circularly polarized dipole antenna that includes a second pair of differently fed conductive elements, the second circularly polarized dipole antenna being left hand circularly polarized. The first circularly polarized dipole antenna and the second circularly polarized dipole antenna may be geometrically orthogonal and configured to radiate concurrently. The first circularly polarized dipole antenna may be positioned adjacent to the second circularly polarized dipole antenna.

The invention aims to provide a broadband circularly polarized antenna loaded with a novel coupling structure, and belongs to the technical field of circularly polarized antennas. The antenna comprises a radiation structure, a supporting structure, a coaxial feed structure and a reflecting plate, wherein the radiation structure comprises a parasitic radiation patch, a cross dipole antenna and a radiation dielectric substrate; by innovatively designing the parasitic radiation patch, the bandwidth of the circularly polarized antenna can reach 53.3% when the circularly polarized antenna is in the working frequency band of 1.046-1.846 GHz, and the maximum gain of the circularly polarized antenna can reach 7.3 dB.

The invention discloses a Ka-band four-tilt-beam magnetoelectric dipole antenna, and belongs to the technical field of millimeter wave radio frequency front-end devices. Based on a magnetoelectric dipole composite radiation structure, four centrosymmetric radiation units are integrated on a low-loss substrate. The antenna comprises a probe patch of a coaxial gamma-shaped feed probe, a radiation patch, a parasitic patch, an upper dielectric substrate, a lower dielectric substrate, a middle curing layer, a shorter metal through hole of the coaxial gamma-shaped feed probe, a longer metal through hole of the coaxial gamma-shaped feed probe, a metal through hole c of the radiation patch, a metal through hole d of the parasitic patch and a metal ground backboard, a probe patch, a radiation patch and a parasitic patch of the coaxial gamma-shaped feed probe are located on the upper surface of the upper-layer dielectric substrate, and a metal ground backboard is located on the lower surface of the lower-layer dielectric substrate; the antenna has ultra-wide impedance bandwidth, has the characteristics of low cost, miniaturization, low cross polarization and back lobe suppression, and is superior to a traditional inclined beam antenna and an antenna array scheme.

The invention belongs to the field of antennas, and discloses a millimeter wave broadband circularly polarized antenna array and a manufacturing method thereof. The fourth metal layer is used for receiving and transmitting electromagnetic waves based on the sequential rotation feed network; the fourth metal layer is also used for serving as a ground plane of the grounding coplanar waveguide; the third dielectric layer is used for transmitting the received electromagnetic waves to the third metal layer; metal via holes are introduced into the third dielectric layer to realize the performance of the grounding coplanar waveguide; the third metal layer is used for coupling electromagnetic waves to the first radiation layer and the second radiation layer based on slot coupling; the third metal layer is also used for serving as a ground plane of the grounded coplanar waveguide; the first radiation layer and the second radiation layer are respectively used for directionally radiating electromagnetic waves to a free space; metal via holes are introduced into the first radiation layer and the second radiation layer, so that the performance of the magnetoelectric dipole antenna is realized; the millimeter wave antenna meets the requirement of a millimeter wave mobile communication working frequency band, and has the characteristics of large axial ratio bandwidth, easiness in processing, low loss and stable directional diagram.

Dipole antenna structures are disclosed. In certain embodiments, a dipole antenna structure includes a first dipole, a second dipole, a third dipole, and a fourth dipole aligned in parallel. The dipole antenna structure further includes a signal delay line structure electrically connected to a common signal feed. The dipoles are electrically connected to the common signal feed through the signal delay line structure.

The invention belongs to the technical field of antenna engineering, provides a tight coupling dipole antenna parameter optimization method based on an equivalent circuit model, and is used for solving the problems that a tight coupling dipole antenna based on full-wave simulation is low in design efficiency and poor in effect, and an existing equivalent model is low in precision and incomplete. According to the method, equivalent circuit models of a matching layer, a radiator and a feeder line of the tight coupling dipole antenna are respectively established, and an analytic relationship between key structure parameters of the tight coupling dipole antenna and circuit parameters in the equivalent circuit models is established, so that a complete equivalent circuit model is established; by means of efficient parameter optimization of the complete equivalent circuit model, on one hand, collaborative optimization design of the bandwidth, standing wave, scanning range and other performance of the tight coupling dipole antenna is achieved, and the antenna performance is globally optimal; and on the other hand, the full-wave simulation frequency required by parameter optimization is greatly reduced, so that the parameter optimization time is shortened, and the design efficiency is improved.

The invention provides an antenna structure, which comprises a first radiation branch knot, a second radiation branch knot, a third radiation branch knot and a reflection branch knot, wherein the second radiation branch knot and the first radiation branch knot are adjacent to each other, are arranged at an interval and form a full-wave dipole antenna, and the full-wave dipole antenna supports receiving and transmitting of electromagnetic wave signals of a preset frequency band. The third radiation branch knot is in a ring shape with a gap, and the third radiation branch knot is connected between the first radiation branch knot and the second radiation branch knot. The reflection branch is located on the side, away from the first and second radiation branches, of the third radiation branch, and is spaced and coupled with the third radiation branch. The invention further provides antenna glass and equipment. According to the invention, directional radiation can be realized through a simple structure.

The invention discloses a broadband coherent signal source DOA estimation method based on three orthogonal dipoles. The method comprises the following steps: obtaining an array output matrix by using a single three orthogonal dipole antenna; carrying out FFT (Fast Fourier Transform) on the output matrixes of the three antennas to obtain an array frequency domain output matrix; if the signal is a frequency agility signal, taking out an amplitude-phase peak value, and accumulating frequency domain amplitude-phase peak values of a plurality of frequency points; if the signal is a linear frequency modulation signal, taking an amplitude-phase value in a certain range from a frequency spectrum; rearranging the frequency domain amplitude and phase values of the plurality of frequency points; forming a frequency shift data set; performing surface stacking on the frequency shift data set to obtain a third-order tensor; realizing third-order tensor decomposition by using a trilinear alternating least square method to obtain a steering vector matrix; and calculating an azimuth angle, a pitch angle, a polarization auxiliary angle and a polarization phase difference according to the steering vector matrix. According to the method, a small array aperture, a small number of array elements and low operation complexity are used, DOA estimation of a plurality of coherent signals is realized by using information of a plurality of frequency points, and polarization information estimation is given.

The invention discloses a compact broadband wide-beam dipole antenna array based on a high-order mode, which comprises two sub-arrays, the two sub-arrays share a dielectric substrate of which the upper surface and the lower surface are partially coated with copper, the equal-amplitude feed is carried out through a one-to-two power division feed structure, the two sub-arrays are bilaterally symmetrical about the central axis of the dielectric substrate, and the upper surface and the lower surface of the dielectric substrate are partially coated with copper. Each sub-array comprises a substrate integrated waveguide cavity and a plurality of pairs of side-by-side dipoles which are connected through a grounding coplanar waveguide, the substrate integrated waveguide cavity is formed by arranging metalized via holes at equal intervals and works in a TE510 high-order mode, the dipoles are placed in the center of the periphery of each electric field loop of the substrate integrated waveguide cavity, and the ground coplanar waveguide is connected with the substrate integrated waveguide cavity. High directivity of an H plane and unilateral radiation with 3dB beam width of an E plane can be obtained by placing the radiation arms of the dipoles according to a radiation field superposition and cancellation rule. The problems that an existing wide-beam antenna is complex in structure, and the technical scheme is difficult to achieve are solved.

A low-profile ultra-wideband wide-angle scanning phased-array antenna based on a tight coupling structure is composed of a metal floor and a plurality of antenna units, the antenna units extend in the X polarization direction and the Y polarization direction respectively to form a plane of any size, and an antenna array is formed; the antenna unit sequentially comprises an upper substrate, a dipole antenna and a lower substrate from top to bottom, the dipole antenna is vertically and crossly placed and comprises two layers of dielectric substrates and a layer of prepreg between the two layers of dielectric substrates, and a resistor-coated pattern is printed on the upper surface of the lower substrate.

The embodiment of the utility model provides a dual-polarization dielectric dipole antenna, the antenna comprises a cross-shaped radiation unit and a guide sheet, the cross-shaped radiation unit comprises a first dielectric plate and a second dielectric plate which are in cross-shaped vertical cross connection; the feed balun circuit on the second dielectric plate crosses the side edge of the top of the first dielectric plate and is connected with the radiation arm on the same side surface of the second dielectric plate; a through hole is formed in the position, at the crossed connection position of the first dielectric plate and the second dielectric plate, of the second dielectric plate and is flatly attached to the first dielectric plate, so that the feed balun circuit on the first dielectric plate is connected to the radiation arm on the same face of the first dielectric plate through the through hole along the penetrating plane. According to the embodiment of the invention, the number of holes in the cross-shaped radiation unit is reduced, so that the antenna is simple to manufacture, and the production cost and the intermodulation distortion risk are reduced. In order to further reduce radiation unit holes, the two groups of feed balun circuits can be wound and crossed from the top, or one group of radiation arms are optimized into slot coupling feed, and coupling perforation is canceled.

The invention discloses a dual-frequency broadband microwave and millimeter wave common-aperture antenna, particularly relates to the technical field of microwave and millimeter wave communication, and solves the technical problem that the performance of a microwave and millimeter wave common-aperture antenna in the prior art is deteriorated due to the fact that mutual restraint between antennas is difficult to overcome. According to the technical scheme, a microwave magnetoelectric dipole antenna and a millimeter wave phase control patch antenna array are integrated; according to the invention, the problems of performance deterioration, incapability of scanning and the like of a sub-antenna under common-caliber integration are avoided, and based on a partial structure multiplexing design strategy, the broadband millimeter wave patch antenna array is multiplexed as a parasitic radiation patch of the microwave antenna to expand the microwave frequency band bandwidth, the microwave antenna bandwidth improvement target is additionally achieved, and the dual-frequency broadband effect is realized.

A device housing is provided for wirelessly receiving electric power in order to supply electric power to a device with an excellent power-receiving efficiency, while suppressing an increase in its size as a whole. Also, a device having the same device housing and a device housing for constituting a main body of a device which is a sensor or an actuator are provided. The device housing is provided with a power-receiving device for mainly generating an electric field or a magnetic field for performing wireless power supply. The power-receiving device includes at least one of a dipole antenna, a slot antenna, a monopole antenna, a chip antenna and an inverted-F antenna. The device housing has a size in a three-dimensional space, and expansion of its size in the three-dimensional space due to the provision of the power-receiving devices is substantially limited to one axis direction (X-axis direction) at most.

The invention relates to an antenna module, a laminated assembly and a vehicle, currents on two feed branches of a dipole antenna in the antenna module go in and out respectively, so that the currents on the two feed branches of the same dipole antenna are in the same phase, and the currents on two radiation branches are in the same direction and in the same phase. The currents on the radiation branches of the plurality of dipole antennas are in the same phase and are transmitted along the same direction, an annularly distributed radiation branch is constructed, and when an excitation signal is accessed to the feed port, a current loop is formed on the plurality of radiation branches so as to support an annular current resonance mode at a target frequency band. The planar antenna can be arranged on any non-conductor planar substrate, when the antenna module is applied to a vehicle, metal arrangement such as a vehicle bumper can be avoided, a single antenna module can support omnidirectional radiation of a target frequency band, the number of the antenna modules is reduced, and the antenna cost is reduced.

The invention discloses a broadband and high-efficiency true time delay reflective array antenna, and belongs to the technical field of antenna engineering. Through the design of the broadband horn feed antenna, the broadband butterfly-shaped dipole antenna and the real-time-delay coaxial transmission line, high-efficiency directional radiation is realized. The gain bandwidth of the multi-layer patch type reflective array antenna is much larger than that of a traditional multi-layer patch type reflective array antenna; compared with a traditional transmission line phase modulation type reflective array antenna, due to stable time delay and shielding and no resonant structure, the antenna has better gain stability, and an in-band gain curve is increased approximately linearly. Finally, the antenna is simple in structure and can be realized only by a single-layer patch structure and a common coaxial transmission cable, and high-cost laminated patch processing is not needed.

The embodiment of the invention relates to the technical field of antennas, in particular to a dual-frequency high-gain dipole antenna and communication equipment. Comprising a long-strip-shaped substrate, symmetrical double-frequency radiation units are arranged on the two sides of a long-edge center line of the substrate, each double-frequency radiation unit comprises two parallel oscillators which are symmetrical along a short-edge center line of the substrate, each oscillator comprises a first branch knot and a second branch knot, the first branch knot is located on the first surface of the substrate, and the second branch knot is located on the second surface of the substrate. The first branch knot and the second branch knot are of coupling structures; the symmetrical double-frequency radiation unit is provided with a feeding point at the connection part of the intersection point of the long-side center line and the short-side center line, and the first branch knot is connected with the feeding point. According to the embodiment of the invention, dual-band coverage is realized by using the coupling structure, high gain can be provided at a higher band, and the problem that the gain of the high band is difficult to improve in the prior art is solved.

The invention discloses a broadband circularly polarized magnetoelectric dipole antenna with superposed Ka-band radiation modes, and belongs to the field of radio frequency front-end devices. The antenna is composed of an electric dipole patch composed of a rectangular patch and a stepped patch, a magnetic dipole radiator composed of four metal columns, an H-shaped slotted coupling floor, a feeder line, coaxial feed metal columns, an SIW structure, a metal ground backboard, an upper dielectric substrate, a lower dielectric substrate and a pp bonding layer, an antenna unit is subjected to 4 * 4 arraying, and the circularly polarized radiation performance of the antenna unit is verified. According to the invention, the circularly polarized wave beam range is wide, and the axial ratio bandwidth is 3GHz to cover the complete working frequency band. After the array is formed, the active S parameters of the array elements are well matched, and the excellent axial ratio performance is still achieved during beam scanning.

The invention relates to the technical field of wireless communication, and provides a filtering antenna structure, which comprises a first silicon-based dielectric layer, a first metal layer, a second silicon-based dielectric layer, a second metal layer, a third silicon-based dielectric layer, a third metal layer and a fourth silicon-based dielectric layer which are sequentially stacked and fixed, the first feed network structure is used for receiving externally transmitted energy in a first polarization direction and coupling the energy to the second silicon-based dielectric layer; the second feed network structure is used for receiving externally transmitted energy in a second polarization direction and coupling the energy in the first polarization direction and the energy in the second polarization direction to the third silicon-based dielectric layer; the third feed network structure receives energy excitation coupled by the first feed network structure and the second feed network structure; and the magnetoelectric dipole antenna structure on the fourth silicon-based dielectric layer is used for receiving energy coupled by the third feed network structure and performing filtering response. The filtering antenna structure has the characteristics of gain response adjustment and out-of-band filtering selection.

The invention discloses a broadband wide-beam microstrip dipole antenna and a processing method thereof, and relates to the technical field of antennas. Comprising an antenna substrate and a metal bottom plate, the antenna substrate is installed on the metal bottom plate and is mutually orthogonal to the metal bottom plate, a microstrip dipole and a folding oscillator arm are arranged on the front face of the antenna substrate, and a feed balun is arranged on the back face of the antenna substrate and penetrates through the metal bottom plate to be connected with a feed signal source. A feed signal source passes through the metal bottom plate and is connected with the microstrip dipole antenna; the feed balun and the microstrip dipole line are insulated from each other. The number of the folding oscillator arms is two, and the folding oscillator arms are symmetrical relative to the center of the microstrip dipole line. On the basis that the basic microstrip form of the microstrip dipole antenna is not changed, the problem that the E-plane beam width of a traditional dipole antenna is narrow is effectively solved through the mode that the annular parasitic branches are introduced into the tail ends of the two oscillator arms of the dipole antenna, and meanwhile it is guaranteed that the microstrip antenna is low in machining difficulty, low in cost and small in size.

The invention provides a broadband tight coupling polarization conversion transmission and reflection integrated array antenna unit. An array is formed by periodically arranging a plurality of antenna units integrating transmission and reflection structures; the transmission structure comprises a cross-shaped dual-polarization receiving dipole antenna and a single-polarization radiation dipole antenna, a middle floor and a phase shift line are arranged between the two antennas, and a receiving layer and a transmitting layer of the transmission structure are formed through parallel double-line connection; the reflection structure is composed of a dipole antenna orthogonal to the receiving direction of the transmission structure, and reflection is completed through parallel double-wire grounding. The middle three layers of floors and the phase shift lines respectively form transmission and reflection band-shaped phase transmission lines, the lengths of the phase shift lines are adjusted according to different positions of each unit in the array, and spherical electromagnetic waves are converted into planar electromagnetic waves. The broadband bidirectional beam communication antenna has the advantages of broadband, low cost, bidirectional beam transmission and the like, and can be used for broadband bidirectional beam communication antennas.

In a magneto-electric dipole antenna, first to third substrates are stacked from top to bottom. A ground layer is disposed between the second and third substrates. Four sector patches and a first feed-out line are disposed on the first substrate. Four ground plates and first and second feed-in lines are disposed below the third substrate. Each of four vias penetrates the second and third substrates and the ground layer. A second feed-out line is disposed between the first and second substrates. Each of first and second feed-out probes penetrates the first to third substrates and the ground layer. The nth feed-out probe is connected to the nth feed-in line and the nth feed-out line, where 1≤n≤2. When two signals are fed to the feed-in lines, the signals are transmitted to the feed-out lines through the feed-out probes, and two electromagnetic waves are radiated.

The hexagonal dual-polarization high-selectivity frequency selective surface comprises a middle filtering layer and two magnetoelectric dipole antennas, and the section of the hexagonal dual-polarization high-selectivity frequency selective surface is hexagonal; the two magnetoelectric dipole antennas have the same structure and are symmetrically arranged relative to the middle filtering layer, the middle filtering layer is a middle metal layer with a central slot, the appearance of the middle metal layer is a regular hexagon, the central slot is hollowed out by a hexagon located in the center, and the middle metal layer is a rectangular metal layer. The six edge grooves extend outwards from the six edges of the hexagonal hollowed-out part respectively, and each edge groove faces one end point of the regular hexagon appearance of the middle metal layer. The middle filtering layer serves as a band-pass filter, electromagnetic waves penetrate through the middle filtering layer during resonance, suppression of low-frequency and high-frequency stop bands is achieved, and meanwhile the middle filtering layer serves as a common ground plane of the two magnetoelectric dipole antennas. According to the invention, the problems of high insertion loss in a wave-transparent window, insufficient out-of-band suppression, over-wide transition zone, poor angle stability and the like of the existing frequency selective surface can be solved.

A system may include a loop antenna and a dipole antenna that includes at least two dipole arms. Each of the at least two dipole arms may be electrically connected to the loop antenna. Within the system, the loop antenna may be a balun for the dipole antenna. In some cases, the electrical connection between the loop antenna and the arms of the dipole antenna may create a combined loop-dipole, dual-wideband antenna. The combined antenna may be tunable using a tuner that is electrically connected to the combined antenna. Various other mobile electronic devices, apparatuses, and methods of manufacturing are also disclosed.

A magneto-electric dipole antenna includes a substrate module, a director, a reflector and a feeding module. The substrate module has an upper surface and a lower surface. The director is disposed on the upper surface of the substrate module. The reflector is disposed on the lower surface of the substrate module. The feeding module is disposed in the substrate module between the director and the reflector. When a to-be-outputted signal is fed to the feeding module, a forward radiation that transmits in a forward direction pointing from bottom to top is generated, a backward radiation that transmits in a backward direction reverse to the forward direction is generated and is reflected by the reflector, and the forward radiation and the backward radiation thus reflected are directed by the director so as to generate the electromagnetic wave.

The invention discloses a multi-beam reconfigurable antenna with multi-polarization and beam switching functions, and relates to the technical field of wireless communication antennas. Comprising a reconfigurable feed network and a plurality of electromagnetic dipole antenna units. Each antenna unit is composed of four square patches with arc-shaped grooves and two rectangular patches, the four square patches with the arc-shaped grooves are connected with the metal floor through four short circuit columns, the rectangular patches are connected with the feed network through copper columns, the two rectangular patches are printed on the front face and the back face of the dielectric plate respectively, the height difference of the two rectangular patches is 1 mm, and the two rectangular patches are orthogonal in position. Independent tuning of various polarization and wave beam states can be realized, and the antenna has the advantages of high integration level, large bandwidth, multiple polarization, convenient operation, low cost and the like, and is suitable for systems of multi-target detection, traffic communication and the like.