341 results about "Dipole antenna" patented technology

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.

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.

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 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 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.

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 present invention provides a dual-broadband co-aperture phased array antenna, which belongs to the field of array antenna technology. The antenna array is composed of a×b low-frequency antenna units and (2a×2b)n high-frequency antenna units. By reusing the high-frequency antenna structure as a low-frequency radiation structure, a compact layout is achieved. The high-frequency antenna unit adopts a broadband antenna such as a waveguide, horn or Vivaldi composed of a metal structure to achieve broadband radiation in the high-frequency band; the low-frequency antenna unit forms a broadband magnetoelectric dipole antenna radiation structure by reusing the metal structure of the high-frequency unit. The present invention improves space utilization efficiency and achieves dual-broadband characteristics through structural reuse. At the same time, by adjusting the high-frequency antenna unit structure and the low-frequency feeding method, multiple polarization forms can be achieved, thereby enhancing the adaptability of the antenna. In addition, the compact arrangement of the radiating units reduces the unit spacing and significantly improves the wide-angle scanning performance of the array.

The invention discloses a Ka-band broadband characteristic magnetoelectric dipole antenna, and belongs to the technical field of millimeter wave radio frequency front-end devices. The antenna comprises an upper-layer dielectric substrate, a semi-cured layer, a lower-layer dielectric substrate and a metal ground backboard which are stacked from top to bottom. The surface of the upper dielectric substrate is provided with four special hexagonal radiation patches, a central rectangular feed patch and four rectangular parasitic patches. A cross-shaped gap is defined by the four radiation patches, and the center feed patch and the specific metal through hole and the metal blind hole in the lower layer jointly form an inverted L-shaped feed probe. And each radiation patch and each parasitic patch are respectively connected to the metal ground backboard through metal through holes. The antenna has the advantages of wide bandwidth, stable performance and compact structure.

Disclosed is a novel dipole antenna design having symmetric poles, each pole having a half circle resonator and an oval resonator that are electrically connected by a straight choke section; the dipole shape permits a wideband dipole response with a transition frequency between a lower and upper frequency band. A cross bar and capacitively-coupled stubs tune at the transition frequency to create a continuous impedance and gain-bandwidth. The dipole and the crossbar and stubs are formed on opposite surface or sides of a substate. Data demonstrates the novel dipole antenna can exceed the gain-bandwidth of the state-of-the-art bowtie by approximately 5 times, that is, its gain-bandwidth is 10:1 versus the standard bowtie gain-bandwidth of 2:1 at broadside.

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.

A magneto-electric dipole antenna array includes a substrate and at least one antenna unit. Each of the at least one antenna unit includes an electric-dipole component, a magnetic-dipole component, a first feeding probe, a second feeding probe and a stripline. The electric-dipole component is disposed on an upper surface of the substrate. The magnetic-dipole component is disposed in the substrate and between the upper surface and a lower surface of the substrate, and is electrically connected to the electric-dipole component. The first feeding probe is disposed on the upper surface of the substrate for vertical polarization. The second feeding probe is disposed in the substrate and between the upper surface and the lower surface of the substrate for horizontal polarization. The stripline is disposed in the substrate and between the first feeding probe and the second feeding probe for capacitive coupling.

The invention provides an ultra-wideband four-arm dipole antenna for an unmanned aerial vehicle-mounted ground penetrating radar. The ultra-wideband four-arm dipole antenna comprises an antenna upper arm which comprises a first upper arm antenna and a second upper arm antenna which are symmetrically arranged; and the antenna lower arm is conducted with the first upper arm antenna and the second upper arm antenna through a first conductive connecting piece and a second conductive connecting piece respectively to form an equivalent parallel structure. The pair of upper arms introduced by the four-arm dipole antenna provided by the invention is coupled with the resistance-capacitance loading dipole antenna serving as an original antenna, and the antenna can generate a new resonance point under the coupling action, so that the bandwidth of the antenna is effectively expanded. Meanwhile, the input impedance imaginary part of the original antenna is obviously improved and is close to 0 in most frequency bands, the radiation characteristic of the antenna is effectively improved, and the antenna gain is finally improved.

The present invention provides an IC tag that can reduce the risk of deterioration in communication functionality even when subjected to external forces such as bending. [Solution] The IC tag comprises a substrate having a first surface and a second surface; an IC chip disposed on the first surface of the substrate; a dipole antenna disposed on the first surface of the substrate for electrically transmitting and receiving information stored in the IC chip; a cover bonded to the first surface of the substrate so as to cover the IC chip and the antenna; a first resin layer laminated on at least a portion of the surface of the cover opposite to the surface bonded to the first surface of the substrate; and a second resin layer laminated on at least a portion of the second surface of the substrate. The first resin layer and the second resin layer have a tensile modulus of 2.0 GPa or less.

A radio frequency coil device and array for ultrahigh field magnetic resonance imaging comprises a coaxial dipole antenna and a dielectric resonator antenna which work in a collaborative excitation mode, and the coaxial dipole antenna is in a circular ring shape or a rectangular ring shape and is provided with a first radio frequency port; the dielectric resonator antenna comprises a dielectric resonator and a coupling coil, the dielectric resonator, the coupling coil and the coaxial dipole antenna are sequentially distributed in parallel at intervals along the Y axis, the coupling coil is provided with a second radio frequency port, and the dielectric resonator forms a resonant cavity and realizes energy coupling with the coaxial dipole antenna through the coupling coil; excitation signals are respectively applied to the first radio frequency port and the second radio frequency port, so that the coaxial dipole antenna and the dielectric resonator antenna respectively generate orthogonal electromagnetic field distribution, and low-channel coupling is realized. Through the collaborative excitation mode and the orthogonal electromagnetic field distribution design, coupling between channels is effectively reduced, the B1 + field uniformity is improved, meanwhile, the peak SAR is reduced, and the imaging efficiency and safety are improved.

The utility model discloses a portable low -power detection electromagnetic radiation appearance, including radiation appearance body, the radiation appearance body top is equipped with detection probe, be equipped with display screen on the radiation appearance body, the radiation appearance body top installs the PCB board in, install the connecting post of the radiation appearance body top on the PCB board, be equipped with the mounting block that is screwed on the mounting column, the mounting block is fixed with dipole antenna, the utility model belongs to electromagnetic radiation appearance technical field, specifically refers to a kind of portable low -power detection electromagnetic radiation appearance.

The application belongs to the technical field of antennas, and discloses an S / Ka-band common-aperture antenna and communication equipment, which comprises a first dielectric plate and a second dielectric plate stacked from top to bottom; the top surface, the middle and the bottom surface of the first dielectric plate are respectively provided with a rectangular patch array, a first metal through hole and a first metal layer; wherein the rectangular patch array, the first metal through hole and the first metal layer form a magneto-electric dipole antenna array; the magneto-electric dipole antenna array works in the Ka-band and is used for realizing satellite communication; the top surface, the middle and the bottom surface of the second dielectric plate are respectively provided with a second metal layer, a second metal through hole and a third metal layer; wherein the second metal layer, the second metal through hole and the third metal layer form a low-profile monopole antenna; the low-profile monopole antenna works in the S-band and is used for realizing ground equipment communication; the application has a simple structure, can realize different beams and polarization characteristics, effectively improves the space utilization rate of the antenna and has high integration.

An antenna element for a transmitarray antenna, which includes a receiving antenna portion and a transmitting antenna portion which are spatially separated from each other. The transmitting antenna portion includes a first reconfigurable magneto-electrical (ME) dipole antenna adapted to provide a 0° or 180° phase shift, and the receiving antenna portion includes a second reconfigurable ME dipole antenna adapted to provide a 0° or a 90° phase shift, such that the antenna element is operable to provide a 90° transmission phase progression with 2-bit resolution. The proposed wideband 2-bit RTA element can achieve a reconfigurable 2-bit transmission phase with high transmission magnitude.

The application relates to the technical field of antennas and discloses a dipole antenna and a UAV. The dipole antenna comprises a body part and a winding structure. The winding structure is arranged on the body part, and a gap exists between the winding structure and the body part. The winding structure is formed by winding a winding sheet. The winding structure comprises a plurality of winding turns arranged coaxially. The length of the body part is greater than the length of the winding structure. According to the application, an asymmetric half-wave dipole antenna is formed by the body part and the winding structure, two resonance modes are excited in the VHF frequency band, a wider standing wave matching is obtained through double-mode resonance, the gain of the dipole antenna in the VHF frequency band is improved, and the detection range of the UAV is increased.

This utility model belongs to the field of radar antenna technology and relates to a quick-release triangular dipole antenna. The antenna includes a connecting wire, at least one triangular dipole, and several linear dipoles. The connecting wire includes a base and several parallel metal tubes. Each metal tube is connected to one end of the base. One end of each linear dipole is fixedly connected to a metal tube. The triangular dipole includes a first linear dipole, a second linear dipole, a bent dipole, a mounting base, a pressure block, and a wing screw. On the one hand, dividing the triangular dipole into three sections greatly reduces the packaging size, and the tubular structure of both the linear and bent dipoles reduces the overall antenna weight, making it very suitable for portable use. On the other hand, the mounting structure proposed in this utility model is stable and reliable, and easy to assemble and disassemble.

This invention provides a millimeter-wave isolation circuit and isolator with multiple receiving links. Its millimeter-wave receiving module includes two or more dipole antennas and receiving units connected one-to-one with each dipole antenna. Each dipole antenna and its corresponding receiving unit constitutes a receiving link. The two or more dipole antennas are arranged along their length, with the radiating elements of consecutive dipole antennas connected end-to-end, forming a millimeter-wave receiving antenna array. It is configured to receive the millimeter-wave signal through two or more receiving links and then output two or more identical pulse signals. This invention enables synchronous reception of multiple pulse signals based on a single structure, ensuring minimal time deviation at the receiving end and reducing system power consumption and cost.

According to the magnetoelectric dipole antenna, the coaxial feed communication bandwidth is larger than 100%, and the technical problems that broadband impedance matching and high-frequency mismatching are achieved, and the stability of a feed structure is poor are solved. According to the antenna, a meandering seam bending type electric dipole and a stepped flaring type magnetic dipole are cooperatively matched, and a feed structure and a U-shaped reflector are combined to integrally form the magnetoelectric dipole antenna. A meandering seam is etched on a horizontal rectangular patch, a vertical patch is welded on the outer side of the horizontal rectangular patch to form a three-dimensional radiator, and the three-dimensional radiator and a stepped flaring type cavity structure magnetic dipole form a closed structure. The feed structure comprises a coaxial line and two bent copper sheets, thereby realizing direct current grounding and providing mechanical reinforcement. 3.7 GHz and 4.2 GHz resonance points are introduced to realize 104.8% of relative bandwidth, while the compact structure is maintained, the broadband coverage and stable radiation characteristics are realized, the long-term reliability in an outdoor complex environment is ensured by a stable feed structure, part of 5G communication signals in a Sub-6G frequency band can be effectively covered, and the antenna is suitable for various wireless communication systems.

The embodiment of the present application provides a kind of single-layer planar dipole antenna, wherein the antenna is applied to intelligent vehicle technical field, wherein the single-layer planar dipole antenna includes: base material, planar dipole antenna, planar balun, differential double-wire transmission line and band ground coplanar waveguide;Wherein, planar dipole antenna, planar balun, differential double-wire transmission line and band ground coplanar waveguide are arranged on the same layer of base material surface;Band ground coplanar waveguide includes center signal conductor and left and right two side reference ground, two metal arms of planar balun are connected to left and right two side reference ground of band ground coplanar waveguide respectively, and the upper end of differential double-wire transmission line is respectively connected to two radiation arms of planar dipole antenna, while the lower end of differential double-wire transmission line two transmission lines are respectively connected to one of center signal conductor and left and right two side reference ground of band ground coplanar waveguide.The embodiment of the present application can realize the integrated molding of antenna by the structure of single surface arrangement antenna, and reduce the integration difficulty of antenna.

The application relates to the technical field of mobile communication, and discloses a dual-polarization dipole antenna based on odd mode and even mode fusion, which comprises a dielectric plate, a first dipole and a second dipole, the first dipole is printed on the upper surface of the dielectric plate, the second dipole is printed on the lower surface of the dielectric plate, and the first dipole is perpendicular to the second dipole. The application solves the problems that the existing dual-polarization dipole antenna cannot simultaneously meet the requirements of miniaturization and wide bandwidth.

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 present invention discloses a broadband magnetoelectric dipole antenna with second harmonic suppression. The antenna comprises: an antenna feed structure comprising a bottom dielectric substrate, a rod-shaped stripline, and an H-shaped slot. The bottom dielectric substrate is provided with an upper floor and a lower floor, respectively, on both surfaces thereof. The H-shaped slot is etched into the upper floor, and the rod-shaped stripline is disposed within the bottom dielectric substrate. An antenna radiator structure comprises a top dielectric substrate, a main patch disposed on the top surface of the top dielectric substrate, and the main patch is connected to the upper floor via a grounded metal post. An antenna filter structure comprises an open resonant ring, a grounded metal branch, and a feeder branch. The open resonant ring is printed on the top surface of the top dielectric substrate. The grounded metal branch is located within the top dielectric substrate and connected to the upper floor. The feeder branch is printed on the top surface of the bottom dielectric substrate and connected to the rod-shaped stripline. This antenna can achieve second harmonic suppression without increasing the antenna volume and without affecting in-band matching.

This application provides an RFID tag, comprising an RFID chip and an antenna body. The antenna body includes an impedance matching network and a radiator, and the RFID chip is connected to the impedance matching network. The impedance matching network is formed by parallel impedance matching units and is connected to the radiator. The radiator has a hollow design. Based on the parallel impedance matching network and the gap between the impedance matching network and the radiator, the polarization direction of the RFID tag is vertical. This application's RFID tag, by changing the antenna structure, achieves a vertical antenna polarization direction, realizing a 90° polarization direction reversal compared to the conventional dipole antenna, thus improving the RFID tag's performance.

An radio frequency antenna includes a substrate having a first surface and a second surface opposite the first surface, an I / O port configured to transmit and receive radio frequency signals, and a first radiator structure defined by a conductive material coupled to the first surface. The first radiator structure includes an elongated main antenna portion connected to the I / O port and having an antenna length of one-quarter wavelength of an electromagnetic wave under a resonance frequency, at least one first antenna crossing portion that intersects the elongated main antenna portion at a first intersection node, and at least one second antenna crossing portion that intersects the at least one first antenna crossing portion at a second intersection node. A ground plane is coupled to the second surface and to the first radiator structure, the ground plane having attached thereto a mirror image of the first radiator structure. The first radiator structure and mirror image form a dipole antenna.

The invention belongs to the related technical field of microwave antennas, and discloses a dual-polarized broadband oscillator antenna, which comprises an antenna cavity, a feed support structure, a radiator and a metal floor, and is characterized in that the antenna cavity is of a rectangular metal cavity structure and is used for accommodating the feed support structure and the radiator; symmetrical rectangular protrusions protruding inwards are machined in the center line positions of the four side walls of the box body. The feed support structure comprises two groups of hollow and solid metal tubes which form a mutually orthogonal arrangement form, and each hollow metal tube is internally provided with a radio frequency cable; the radiator comprises two pairs of half-wave oscillators and four parasitic branches, each pair of half-wave oscillators is provided with oscillator arms vertically installed at the top end of the feed supporting structure, and the parasitic branches are arranged on diagonal lines of the adjacent oscillator arms respectively. Compared with an existing product, the antenna has the advantages of being wide in frequency band, high in isolation degree, dual-polarized, stable in radiation performance and the like, and meanwhile the environmental adaptability of the antenna is improved.

The application discloses a P-waveband broadband characteristic planar dipole antenna and belongs to the technical field of decimeter wave radio frequency front-end devices. A pair of printed planar dipoles composed of a half-elliptical part and a rectangular part and respectively located on the upper and lower surfaces of a dielectric substrate form the main radiation structure of the antenna. A metal base is composed of a metal side wall and a metal ground back plate, the metal side wall plays a role of supporting the dielectric substrate and also plays a role of a parasitic element, the current of the dipole is coupled to the parasitic element metal side wall, the current is avoided from being concentrated in the center of the dipole patch, and therefore the impedance bandwidth of the antenna is improved. The antenna has good radiation performance at 0.4 GHz, 0.5 GHz, 0.6 GHz, 0.7 GHz and 0.8 GHz, and the antenna can be widely applied to P-waveband wireless communication systems with requirements of broadband, low profile and stable performance.

The application belongs to the technical field of antennas and relates to a cross-dipole antenna which comprises a metasurface layer, a radiation layer and a ground layer; the metasurface layer is connected with the ground layer and forms a containing space between the metasurface layer and the ground layer; the radiation layer is arranged in the containing space, is connected with the ground layer and is arranged in a spaced mode with the metasurface layer; the radiation layer comprises two pairs of cross-dipoles; two feeding structures are arranged on the ground layer and are connected with the two pairs of cross-dipoles respectively; the radiation layer comprises a dielectric plate and four radiation patches which are arranged in a spaced center-symmetrical mode about the center of the dielectric plate; the dielectric plate and the radiation patches are square structures, one side of the radiation patch is parallel to one side of the dielectric plate; two radiation patches are adjacently arranged on the top surface of the dielectric plate, and the other two radiation patches are adjacently arranged on the bottom surface of the dielectric plate; two opposite radiation patches are connected to serve as a dipole. The application can reduce the profile of the antenna.