978results about "Particular array feeding systems" patented technology

The invention belongs to the technical field of antenna engineering, and particularly relates to an ultra-wide-band low-profile phased-array antenna, which realizes broadband impedance matching characteristics and effectively expands the working bandwidth of the antenna by optimizing a dipole arm structure and introducing a matching branch knot and linear tapered slot composite structure on a radiation unit layer; on the array architecture level, an electromagnetic metasurface technology is adopted, array current distribution is improved through a periodic artificial electromagnetic structure, the active standing-wave ratio is remarkably reduced, the scanning angle of an array is widened, and meanwhile high compression of a system profile is achieved; on the structural design level, a three-dimensional composite structure of a transverse metal floor, a longitudinal radiation layer and a transverse metasurface layer is innovatively constructed, and the overall section height is reduced to 0.137 lambda Low (lambda Low is the lowest working frequency wavelength) through electromagnetic coupling and space folding technologies; in conclusion, the ultra wide band (the relative bandwidth is greater than or equal to 90%) and the low profile (lt; and the method is suitable for a new generation of broadband phased array radar system.

Disclosed are a wide-angle beam-scanning phased array based on near-field coupling and port self-decoupling and a design method thereof. This design method is different from traditional methods that require introduction of additional beam-broadening and decoupling structures, but aims to obtain wide-beam active element pattern by cleverly utilizing a near-field coupling effect between elements. Meanwhile, port self-decoupling technology is introduced into the phased array to achieve high port isolation and improve beam gain at large scanning angle. Therefore, a phased array with an extremely simple structure and an excellent beam-scanning performance, can be constructed based on typical narrow-beam antenna elements, without requiring additional beam broadening and decoupling structures.

The embodiment of the invention provides a ka and k waveband dual-frequency dual-polarization broadband wide-angle scanning common-aperture antenna unit and an antenna array, and relates to the technical field of common-aperture antenna arrays, the antenna unit comprises an antenna unit substrate, a low-frequency antenna, a high-frequency antenna and a wide-angle matching layer; the low-frequency antenna and the high-frequency antenna are arranged in the antenna unit substrate, and the high-frequency antenna comprises a shielding enclosure frame which is located between the low-frequency antenna and the high-frequency horizontal polarization L-shaped feed probe and between the low-frequency antenna and the high-frequency vertical polarization L-shaped feed probe; the wide-angle matching layer is arranged on the front surface of the antenna unit substrate and is positioned above the low-frequency antenna and the high-frequency antenna; wherein the low-frequency antenna is an L-shaped probe coupling microstrip patch antenna with a shielding enclosure frame, and the high-frequency antenna is a slot antenna. The antenna is simple in structure, employs a printed board technology, is very low in processing difficulty, is lower in cost, and is easy to be interconnected with rear-end equipment.

The invention discloses a dual-beam dual-circularly-polarized wide-angle scanning phased-array antenna, and belongs to the field of wireless communication. The antenna is composed of an antenna unit group. The antenna unit comprises a bottom metal floor, a fifth substrate, a 3dB bridge, a fourth substrate, an antenna metal floor, a third substrate, a second rectangular feeder line, a second substrate, a first rectangular feeder line, a first substrate and a radiation patch layer which are arranged from bottom to top; wherein the 3dB bridge is used for realizing signal transmission, and the two rectangular feeder lines have the same size and are orthogonally arranged; the radiation patch layer comprises four square metal patches and two feed discs; the square metal patches are separated through the L-shaped gaps and are connected with the antenna metal floor through the short circuit columns respectively, and the feed disc is connected with the rectangular feed line through the metal probe and connected to the output end of the 3dB bridge. The antenna unit adopts an equivalent magnetoelectric dipole form, the wide-angle scanning characteristic of the phased-array antenna is achieved, communication with two satellites can be achieved at the same time, and the overall communication efficiency is improved.

A method for manufacturing a nozzle cap, the method including attaching an antenna printed circuit board (“PCB”) strip to an inner cover surface of an antenna cover; and inserting the antenna cover into a scallop defined by a circumferential wall of a cap body to position the antenna PCB strip between the antenna cover and the circumferential wall, the circumferential wall defining an outer wall surface, the antenna cover covering the scallop, the scallop extending radially inward into the circumferential wall relative to a first portion and a second portion of the outer wall surface, the scallop circumferentially positioned between the first portion and the second portion of the outer wall surface.

The invention discloses a linear polarization scattering reconfigurable array antenna, which belongs to the technical field of antenna manufacturing and comprises an antenna unit, an extension socket, a transmission type phase shifter and an inductor. The antenna unit comprises a radiation patch, a first dielectric substrate, a metal via hole, a metal patch, a second dielectric substrate, a perforated metal floor, a third dielectric substrate, a feed metal column and a radio frequency coaxial connector, the radio frequency coaxial connector is connected with the radiation patch through the feed metal column, and a variable capacitance diode and a capacitor are arranged on the transmission type phase shifter. The transmission type phase shifter is connected with the radiation patch through the feed metal column, the variable capacitance diode is connected with the punching metal floor, the bottom of the third dielectric substrate is provided with a direct current bias line, the direct current bias line is connected with the transmission type phase shifter through the inductor, and the transmission type phase shifter is connected with the radiation patch through the feed metal column. According to the invention, flexible regulation and control of antenna scattering beams can be realized, and the antenna has the characteristics of flexible control, fast response speed and high radiation efficiency.

A vertically-polarized omnidirectional antenna, including: a body including: a host printed circuit board (PCB) including: first and second slots, and a metal flooded ground plane, first and second antenna PCBs forming four dipole pairs, the first and second antenna PCBs mounted to the host PCB, respective first to third ground connection fillet tabs, the first and second tabs being on an opposite side of the host PCB from the third tab, the first to third tabs being on a same side of its antenna PCB, an amplitude taper on each antenna PCB at transitions between the host and antenna PCBs, including: a first transmission line splitting off into a second transmission line and a third transmission line, the second transmission line feeding two antennas to form one dipole pair, the third transmission line stepping down using a quarter-wave transformer, and a radio frequency (RF) connector to receive a power supply.

An antenna device and a radar wherein the antenna device comprises a decoupling network and at least two antenna units. Each antenna unit comprises a radiating body and a feeder line, one end of the feeder line is connected with the radiating body, and the feeder line is used for feeding a radio frequency signal into the radiating body; and a preset distance is formed between the feeder lines of two adjacent antenna units. The decoupling network is arranged between the feeder lines of the two adjacent antenna units and is in indirect coupling connection with the feeder lines, and the decoupling network is used for enabling the phases of currents transmitted to the decoupling network from the feeder lines of the two adjacent antenna units to be opposite. According to the invention, the decoupling network is arranged, so that the coupling current generated by the feeder lines of the two adjacent antenna units can be introduced into the decoupling network, and two paths of coupling current from different feeder lines can be offset on the decoupling network, thereby achieving the purpose of decoupling. Meanwhile, by arranging the decoupling network, decoupling of the two adjacent antenna units with the distance smaller than 0.5 lambda can be achieved, and the isolation degree of the high-density array antenna is improved.

This application provides a base station antenna and a base station. The base station antenna includes a first antenna array, a frequency selective surface, a second antenna array, and an antenna conductive component. The frequency selective surface is located between a first radiator of a radiating element of the first antenna array and the second antenna array. The frequency selective surface is configured to reflect a radiation signal of the first antenna array and transmit a radiation signal of the second antenna array. The antenna conductive component and the first antenna array are located on a same side of an array surface of the second antenna array. The antenna conductive component includes a conductive substrate, a first structural unit, and a second structural unit. Both the first structural unit and the second structural unit encircle the conductive substrate once, and the first structural unit and the second structural unit are spaced apart and adjacent to each other, to form a capacitor. The base station includes a pole and the base station antenna, and the base station antenna is fastened to the pole. In this application, a problem of an electromagnetic shadow caused by blocking of a metal component can be mitigated.

The invention discloses a low-profile and high-integration broadband dual-circularly-polarized transceiving common-aperture phased-array antenna, which adopts a multi-layer PCB (Printed Circuit Board) laminated structure, comprises a radiation patch layer, a quasi-rectangular patch layer, a metal reflection ground layer and a feed layer from top to bottom, and is combined with a metalized blind hole and a buried hole to form a complete coupling path. A U-shaped groove, a U-shaped metal strip and a C-shaped groove are integrated on a metal reflection ground, and a staggered groove is loaded on a quasi-rectangular patch, so that a K / Ka dual-band separated dual-coupled feed structure is realized, and dual circularly polarized radiation is obtained under the same aperture. The antenna is further provided with outer ring and inner ring plated-through hole arrays, the outer ring plated-through hole arrays are used for constructing an isolation area to improve the isolation degree between wavebands, and the inner ring plated-through hole arrays introduce a horizontal electric field component to improve the circular polarization purity and expand the axial ratio bandwidth. Wide impedance bandwidth and wide axial ratio bandwidth are realized in the K wave band and the Ka wave band, the isolation degree is high, the profile is low, the structure is compact, and the broadband phased array antenna is suitable for broadband phased array systems such as satellite communication terminals and mobile platforms.

An antenna structure, an electronic device, and a wireless network system are provided, and relate to the field of antenna technologies. A patch antenna array includes four patch antennas. The four patch antennas are arranged in two rows and two columns. One of the feeding structures is included between two of the patch antennas in each row. One of the feeding structures is included between two of the patch antennas in each column. The feeding structure located between the two patch antennas in each column is connected to the first feeding port, so that the four patch antennas all generate polarization in a first direction. The feeding structure located between the two patch antennas in each row is connected to the second feeding port, so that the four patch antennas all generate polarization in a second direction.

The invention belongs to the technical field of wireless communication, and particularly relates to a low-profile broadband transmission array antenna based on a multi-resonant structure. The antenna comprises a multi-resonant-structure transmission array surface and a polarization torsion reflection surface. The multi-resonant structure transmission array surface is arranged above the polarization torsion reflection surface through a support frame; the multi-resonant structure transmission array surface comprises a plurality of multi-resonant structure antenna units which are periodically arranged; the multi-resonant-structure antenna unit is of a multi-layer stacked structure, sequentially comprises an upper-layer metasurface layer, an upper-layer dielectric substrate, a middle metal ground layer, a bonding layer, a lower-layer dielectric substrate, a lower-layer metasurface layer and a coaxial structure from top to bottom, and is used for conducting electromagnetic energy; a circular through hole is etched in the center of the middle metal ground layer; the polarization torsion reflection surface comprises a plurality of polarization torsion reflection surface units which are arranged periodically, and the middle of the polarization torsion reflection surface is hollowed out and used for placing a feed source horn.

A mobile terminal includes: a casing including a metal frame and a rear cover, wherein the metal frame is provided with a plurality of slots to divide the metal frame into a plurality of metal parts arranged at intervals; an antenna bracket being provided with a plurality of wirings; a first antenna assembly including a plurality of antenna structures, wherein the plurality of antenna structures are formed based on a plurality of metal parts arranged at intervals and a plurality of wirings, and a working frequency band of the plurality of antenna structures is a sub-6G frequency band; and a second antenna assembly including a plurality of millimeter-wave antenna modules, wherein a working frequency band of the plurality of millimeter-wave antenna modules is a millimeter-wave frequency band.

The invention discloses a broadband wide-angle scanning array antenna based on a metasurface lens, belongs to the technical field of phased-array antennas, solves the problem of how to improve the scanning range and gain of the phased-array antennae, and is characterized in that the metasurface lens with phase gradient is loaded above the phased-array antenna on the basis of not changing the structure of the original phased-array antenna. The beam scanning range of the phased-array antenna is expanded, and the performance such as gain is improved; according to the invention, an original phased-array antenna does not need to be modified and redesigned, additional active devices do not need to be added, new components do not need to be introduced into an original system, the system cost is effectively reduced, the system size is reduced, and the antenna is suitable for scenes, such as unmanned aerial vehicles and low-altitude aircrafts, which have strict requirements on the size and the weight.

The present invention discloses a general-purpose low-profile active array antenna system, which includes an antenna module, a multi-functional structural frame, a power divider module, a beam control module, a radio frequency connector, and a low-frequency connector. The multi-functional structural frame includes at least two cavities, and the partition between the two cavities includes a plurality of radio frequency connection holes and a plurality of low-frequency connection holes. The antenna module is connected to one of the cavities, the power divider module and the beam control module are connected to the other cavity. The radio frequency connector is located in the radio frequency connection hole, and the radio frequency connector connects the antenna module and the power divider module. The low-frequency connector is located in the low-frequency connection hole, and the low-frequency connector connects the antenna module and the beam control module. The beneficial effects of the present invention are as follows: the system composition is simplified, which is beneficial to the generalization, serialization, and standardization design of modules, and is more conducive to the realization of low-cost design of active array antennas.

An antenna device comprises: a first antenna; a second antenna; and a plurality of single decoupling network circuits DN_1-DN_n which electromagnetically connect the first antenna and second antenna and remove a self-interference signal, wherein a multi-stage decoupling network circuit in which the DN_1-DN_n are dependent-connected can be configured such that a Y21 parameter of the multi-stage decoupling network circuit becomes equal to or lower than a predetermined value on frequencies f_1-f_n, respectively.

Omni-directional, horizontally polarized antennas are provided. According to one aspect, an omni-directional, horizontally polarized antenna includes a first reflector and a second reflector separated from the first reflector. Disposed between the first and second reflectors are a planar array of radially directed horizontally polarized antenna elements and a planar feed network configured to feed the antenna elements of the planar array. A coaxial feed structure configured to communicate electrical signals to or from the feed network is provided.

A vehicle includes a window having an antenna assembly. The window includes a glass surface, a metal frame around the glass surface, and a set of defroster wires in the glass surface. A top wire of the set of defroster wires is separated from a top edge of the metal frame by an antenna region. The antenna is disposed in the antenna region. The antenna has a first end and a second end opposite the first end. The first end intersects a horizontal cover line of the metal frame tangentially. A feed line connects to the first end at the horizontal cover line. A ground line electrically couples the second end of the antenna to the metal frame.

The invention discloses a broadband circularly polarized scattering reconfigurable array antenna based on variable capacitance diode loading, and the broadband circularly polarized scattering reconfigurable array antenna is composed of a plurality of scattering reconfigurable antenna units. The scattering reconfigurable antenna unit comprises a resonance structure used for radiating or receiving signals and a feed and phase shift structure arranged on the lower surface of the resonance structure. The feed and phase shift structure comprises a broadband directional coupler and a reflection type broadband phase shifter. When the scattering reconfigurable antenna unit is in a radiation working state, the broadband directional coupler radiates energy to the resonant structure; when the scattering reconfigurable antenna unit is in a scattering working state, the broadband directional coupler transmits energy to the reflection type broadband phase shifter, and the reflection type broadband phase shifter regulates energy of secondary radiation of the reflection type broadband phase shifter according to bias voltage applied to an internal variable capacitance diode. The array antenna provided by the invention is wide in working frequency band, and the radiation performance can be ensured while the scattering characteristic is reconfigurable.

An antenna assembly includes a metasurface antenna unit including a radiating structure, a feeding structure, and a grounding structure therebetween. The radiating structure includes radiating elements arranged in an m×n grid of m rows of radiating elements and n columns of radiating elements, where n is greater than m. The radiating elements are separated by radiating slots with edges of the radiating elements facing each other across the radiating slots. The grounding structure includes a ground plane having a coupling aperture therethrough. The feeding structure includes a single strip feedline for feeding the radiating elements. The strip feedline passes across the coupling aperture and feeds the radiating structure through the coupling aperture. At least one of the radiating elements is fed through at least one other radiating element across the corresponding radiating slot.

The invention discloses a millimeter wave end-fire horizontal polarization broadband wide-angle scanning phased antenna array and equipment. The array comprises a lower-layer metal surface, a middle metal surface, an upper-layer metal surface, metal through holes, metal blind holes and a feed port, a radiator of the antenna array is composed of rectangular annular patches which are arranged at the front ends of an upper-layer metal surface and a lower-layer metal surface and are provided with concave U-shaped structures, and opening gaps which are etched at the central positions of the front ends of the upper-layer metal surface and the lower-layer metal surface of the substrate integrated waveguide; a plurality of antenna units in the antenna array feed independently through a plurality of feed ports and regulate and control an excitation phase; the metal blind hole is connected with the substrate integrated coaxial line; the substrate integrated coaxial line is composed of a substrate integrated waveguide and a transmission line located on a middle metal face. The substrate integrated waveguide is composed of two layers of dielectric substrates, a bonding layer, an upper-layer metal surface, a lower-layer metal surface and metal through holes. According to the invention, the broadband and wide-angle phase control scanning performance of the array beam in the plane where the array is located is realized.

Antenna arrays with high isolation between antenna elements are disclosed herein. In certain embodiments, an antenna array includes at least one primary antenna element and at least one secondary antenna element. The primary antenna element includes a first port of a first signal polarization type (for instance, horizontal) and a second port of a second signal polarization type (for instance, vertical), which are connected to a first signal feed and a second signal feed, respectively. The secondary antenna element includes a first port of the first signal polarization type connected to the first port of the primary antenna element by way of a first signal delay line, and a second port of the second signal polarization type connected to the second port of the primary antenna element by way of a second signal delay line.

A unit cell of an array antenna includes an integrated dilation and feed circuit and an associated radiator assembly. The integrated dilation and feed circuit includes an asymmetric dilation layer, an asymmetric combiner layer, a symmetric feed layer and a symmetric slot layer. Feed circuits on the feed layer are configured to couple radio frequency (RF) signals to / from a pair of orthogonally disposed slot elements symmetrically disposed on the slot layer of the integrated dilation-feed circuit. The slot layer couples signals to and from the radiator assembly. Such unit cell may be used to provide an array antenna including an active electronically scanned array (AESA) antenna.

The invention belongs to the technical field of antennas, and relates to a common-caliber dual-polarization tight coupling array antenna capable of wide-angle scanning, which comprises a low-frequency antenna array surface, a low-frequency vertical branch knot, a low-frequency feed balun, a high-frequency antenna array surface, a low-frequency feed network and a coaxial connector. According to the invention, a traditional ultra-wideband tight coupling array antenna is decomposed into two antennas with small bandwidths, and loading of resistive materials is avoided through common-caliber configuration. Wherein an upper-layer low-frequency antenna unit is divided into a plurality of sub-units, electromagnetic transparency of a lower-layer high-frequency antenna is realized by adopting a winding line design, mutual interference of high and low frequencies is further inhibited by loading a vertical branch knot, and the fractal low-frequency sub-units are synthesized into a large unit through a power divider. According to the dual-polarization ultra-wideband antenna, the average efficiency reaches 85% in the working frequency bands of 2-6GHz and 7-18GHz, the active standing-wave ratio is smaller than 4 in the scanning range of + / -60 degrees, and the problem that in a traditional design, ultra-wideband, high efficiency, wide-angle scanning and dual polarization cannot be achieved at the same time is solved.

The present disclosure relates to a base station antenna; the base station antenna comprises: a radio; a feed board and a radiating element array mounted on the feed board, where the radiating element array comprises a plurality of radiating elements, and each radiating element extends forward from the feed board; a radome arranged in front of the radiating element array; and a plurality of radome supporting members mounted on the radio and extending forward from the radio to the radome for supporting the radome.

The invention provides a base station antenna and a base station. The base station antenna comprises a first antenna array, a frequency selection surface, a second antenna array and an antenna conductive part. The frequency selection surface is located between the first radiator of the radiation unit of the first antenna array and the second antenna array, and the frequency selection surface is used for reflecting a radiation signal of the first antenna array and transmitting a radiation signal of the second antenna array; the antenna conductive part and the first antenna array are positioned on the same side of the array surface of the second antenna array; the antenna conductive part comprises a conductive substrate, a first structure unit and a second structure unit. The first structure unit and the second structure unit surround the conductive substrate by one circle, and the first structure unit and the second structure unit are arranged adjacently at intervals and form a capacitor. The base station comprises a holding pole and the base station antenna, and the base station antenna is fixed on the holding pole. According to the invention, the problem of electromagnetic shadow caused by shielding of the metal part can be improved.

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.

This application provides a terminal antenna and a mobile terminal device. The terminal antenna includes a frame, a first feed, and a second feed. A part of the frame on a side of the first gap away from the second gap forms the first conductor, a part of the frame on a side of the second gap away from the first gap forms the second conductor, and the frame between the first gap and the second gap forms the third conductor. The first feed is electrically connected to the first conductor, so that the first conductor radiates a signal, and the second feed is electrically connected to the second conductor, so that the second conductor radiates a signal in a low band.

Methods, systems, and devices for wireless communications are described. The described techniques provide for an energy harvesting (EH)-capable device to indicate, to a reader wireless device, capabilities of the EH-capable device to use a frequency scanning antenna (FSA) array. In some examples, the capability report may indicate one or more modes supported by the EH-capable device, where a mode may indicate one or more operations supported by the EH-capable device using one or more antenna ports associated with the FSA array. For example, the EH-capable device may indicate a capability to communicate using two different antenna ports and may indicate a capability to perform concurrent operations using the two different antenna ports. In some examples, the mode of the EH-capable device may indicate which operations are performable using each antenna port, and the EH-capable device may communicate with the reader wireless device to determine a mode for communications.

A three-dimensional (3D) antenna array system in the form of a phased array antenna having a first antenna array and a second antenna array, a calibration circuit including an external signal generator, and a hinged power transformer is described. The external signal generator is electrically connected to the first antenna array, and the first antenna array is electrically coupled to the second antenna array via the hinged power transformer. The hinged power transformer mechanically joins the first antenna array to the second antenna array in one of a first position and a second position, with the first antenna array being disposed at an angle in relation to the second antenna array when the hinged power transformer is disposed in the first position.