1390results about "Particular array feeding systems" patented technology

The invention discloses an ultra-wideband low-profile dual-polarization curved surface phased-array antenna, and belongs to the field of antenna engineering technology and wireless communication. The phased-array antenna comprises a plurality of pitching surface sub-arrays which are arranged along the axial direction; the pitching surface subarray is composed of a plurality of curved surface antenna units which are uniformly distributed along the circumference, and the whole pitching surface subarray is fan-shaped; the curved antenna unit comprises a curved dielectric block, a metasurface matching layer, a radiator layer, a vertical feed balun, a wave-absorbing resistance layer and a metal floor layer, wherein the metasurface matching layer and the radiator layer are conformally arranged on the upper surface and the lower surface of the curved dielectric block. According to the antenna, the flexible dielectric plate is used as a carrier of a radiation dipole and is matched with the PCB metal floor, so that the normal active standing-wave ratio of the antenna is smaller than 3.0 in ten octaves in two linear polarization directions of horizontal polarization and vertical polarization, and + / -60-degree scanning is realized in an azimuth plane.

The invention relates to the technical field of antenna equipment, in particular to a multi-frequency resonant circularly polarized antenna array and a communication performance test method thereof, and solves the problem that an antenna cannot communicate through different frequencies at the same time. The antenna array comprises an antenna substrate, a circular antenna assembly and a radio frequency signal line; the circular antenna assembly comprises a feeding point, a feeder line and a radiation unit; when the circular antenna assembly works in a low-frequency working frequency band, the first branch knot and the second branch knot in the radiation unit form a first equivalent resonance length, and when the circular antenna assembly works in a high-frequency working frequency band, the part, close to the feeder line, of the second branch knot in the radiation unit and the third branch knot form a second equivalent resonance length. And when the circular antenna assembly works in a working frequency band with higher frequency, the part, close to the feeder line, of the second branch knot in the radiation unit and the fourth branch knot form a third equivalent resonance length. According to the invention, multi-band radiation and receiving can be realized, and the flexibility of the antenna is improved.

This application provides a foldable electronic device, including two main bodies that are capable of being relatively folded or unfolded and a main antenna unit and a parasitic antenna unit that are respectively disposed on the two main bodies. The main antenna unit includes a radiation stub and a ground port disposed between two ends of the radiation stub. The parasitic antenna unit includes a parasitic stub and a ground return port, and the ground return port is disposed on the parasitic stub and is close to or located at one of end portions of the parasitic stub. When the electronic device is in a folded state, the parasitic stub overlaps the radiation stub.

An antenna assembly can include a base portion and a cover, the cover configured to be removably coupled to the base portion. The antenna assembly can include a modem positioned on or above the base portion, a ground plane, and a multi-band antenna.

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.

Systems and methods relating to multi-beam forming networks using an antenna array. A matrix circuit for feeding elements of an antenna array to produce multiple beams is provided. To address beam squint issues, beam squint is mitigated by using a series of phase shifters with specific phase-delay performances between the matrix circuit and the antenna array elements. A linearly increasing or decreasing phase difference in the signals fed into adjacent antenna array elements across the array mitigates or eliminates beam squint in the resulting multiple beams. The phase shifters are programmed to provide this increasing or decreasing phase differences.

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 phase shifter and a base station antenna. The phase shifter comprises a fixed frame, a phase shifting strip line and a sliding medium. The fixed frame comprises a guide rail. The phase shift strip line is fixed on the guide rail. The sliding medium is in sliding connection with the guide rail and is separated from the phase-shifting strip line through the guide rail. The guide rail can guide the movement of the sliding medium relative to the phase-shifting strip line, thereby facilitating the improvement of the smoothness of the movement of the sliding medium relative to the phase-shifting strip line. As the sliding medium is separated from the phase-shifting strip line through the guide rail, and the sliding medium is not contacted with the phase-shifting strip line, friction between the sliding medium and the phase-shifting strip line is avoided in the process that the sliding medium moves relative to the phase-shifting strip line, the resistance of the sliding medium in the process of moving relative to the phase-shifting strip line is reduced, and the service life of the phase-shifting strip line is prolonged. The smoothness of the sliding medium relative to the phase-shifting strip line movement is further improved, the pulling force for driving the sliding medium relative to the phase-shifting strip line movement is reduced, and the requirement for a driving piece for driving the sliding medium relative to the phase-shifting strip line movement is lowered.

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.

An electronic device is provided. The electronic device includes an antenna substrate and an antenna array comprising a sub array, the sub array includes a plurality of antenna elements, feeding network circuitry including a first power divider for first polarization and a second power divider for second polarization, which differs from the first polarization, and network circuitry for decoupling of a first signal of the first power divider and a second signal of the second power divider, wherein the sub array is disposed on a first surface of the antenna substrate, and wherein the feeding network circuitry disposed on the first side or a second side opposite to the first side of the antenna substrate, and wherein the network circuitry for decoupling is disposed in a region between the first power divider and the second power divider in the first side or the second side of the antenna substrate.

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.

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.

The invention provides an active antenna unit which can be applied to communication equipment with a transmitting-receiving common antenna. The active antenna unit comprises N radio frequency antenna links and L self-interference cancellers, N is an integer greater than 1, and L is an integer less than or equal to N, for example, L is equal to N. Each radio frequency antenna link comprises a transmitting channel, a receiving channel, a feed network and an antenna subarray. The N radio frequency antenna links meet at least one of the following conditions: the routing of the feed networks of at least two radio frequency antenna links is different; or, the N antenna sub-arrays are provided with isolation assemblies which are used for isolating signals among the N antenna sub-arrays. In addition, a self-interference canceller is connected between the transmitting channel and the receiving channel of at least one link and used for cancelling signals from the transmitting channel in the receiving channel of the link where the self-interference canceller is located. Therefore, the self-interference cancellers do not need to be connected between the transmitting channels and the receiving channels of different links in the N links, the number of the self-interference cancellers can be reduced, and the circuit complexity is reduced.

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 dual circularly polarized common aperture phased array antenna applied to low orbit satellite communication, comprising M * N antenna array sub-arrays, the M * N antenna array sub-arrays are uniformly distributed in M rows and N columns, each antenna array sub-array comprises four antenna units, the four antenna units are uniformly distributed in 2 rows and 2 columns, any antenna unit can completely coincide with the other three antenna units when rotating by a certain angle with the central axis of the antenna array sub-array as the rotating axis, and the first antenna unit comprises a combined radiation layer, a first copper plate, a coupler layer and a second copper plate which are arranged from top to bottom. The coupler layer adopts an orthogonal coupler realized based on a short-circuit three-branch structure to convert an external radio-frequency signal into two radio-frequency signals with a phase difference of 90 degrees, and the two radio-frequency signals are transmitted to the combined radiation layer; the combined radiation layer adopts a linear dipole radiator with separated upper and lower parts to realize broadband design; the broadband wide-angle scanning device has the advantages of being capable of achieving wide-angle scanning, wide in frequency band, simple in overall structure and low in manufacturing cost.

This application describes multi-band antenna systems and base stations. An example multi-band antenna system includes: a plurality of radiating element arrays, feeding networks separately corresponding to the plurality of radiating element arrays, at least one layer of a frequency selective surface (FSS), and a reflection panel. The plurality of radiating element arrays are located above the reflection panel. All or some of the plurality of radiating element arrays are stacked. The at least one layer of the FSS is located between the stacked radiating element arrays. A feeding network corresponding to at least one radiating element array in the stacked radiating element arrays is electrically connected to the at least one layer of the FSS, or the feeding network corresponding to the at least one radiating element array is integrated on the at least one layer of the FSS.

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.

The embodiment of the invention provides an antenna structure and communication equipment, relates to the technical field of radio communication, and is used for reducing the transmission loss of a feeder line in the antenna structure. The antenna structure comprises a radome, an antenna array assembly, a mounting seat and a connector, the radome is provided with a first accommodating cavity, the antenna array assembly and the mounting seat are both arranged in the first accommodating cavity, and the antenna array assembly is provided with a radiating surface and a back surface deviating from the radiating surface and is provided with a preset port; the mounting base comprises a mounting base body, the mounting base is located on the side where the back face of the antenna array assembly is located, and a second containing cavity is formed in the mounting base body; the connector is arranged in the second accommodating cavity, and the connector is electrically connected with the preset port.

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 present disclosure relates to the technical field of antennas, and provides a circularly polarized antenna, an array antenna, and a communication terminal. The circularly polarized antenna comprises a radiation patch, a grounding layer, a dielectric layer, and a power division module; the radiation patch and the grounding layer are oppositely arranged, and the dielectric layer is located between the radiation patch and the grounding layer; the power division module comprises an input end and two output ends, and the phase difference between output signals of the two output ends is 90°; the radiation patch comprises a first feed point and a second feed point, the first feed point is electrically connected to one output end, and the second feed point is electrically connected to the other output end; the virtual connection line between the first feed point and the center of the radiation patch is a first line, the virtual connection line between the second feed point and the center of the radiation patch is a second line, and the included angle between the first line and the second line is less than 90°. The circularly polarized antenna has a small size and a compact structure.

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.

Systems and methods for differential antenna driving are provided. In one aspect, a front end system includes at least one power amplifier configured to receive a first transmit radio frequency signal from a baseband processor, amplify the first transmit radio frequency signal, and output the amplified first transmit radio frequency signal. The front end system further includes at least one balun configured to receive the amplified first transmit radio frequency signal. The at least one balun includes a positive output coupled to a first monopole of at least one antenna and a negative output coupled to a second monopole of the at least one antenna.

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.

The invention relates to a feed network, an antenna device and a base station system, the feed network comprises a floor, a main line and a coupling line, the main line is in coupling connection with the floor, the main line comprises an input port and at least one main line output port, along a first direction of the main line, the coupling line is in coupling connection with the main line through an open end, and the coupling line and the main line are arranged at intervals; the coupling line includes an open end and at least one coupling line output port. The feed network is simple in structure, good in manufacturability and high in design freedom degree, the layout occupied space of the feed network can be reduced, and the layout of the feed network in the antenna device is facilitated. And the phase slope of the signal at the main line output ports and the coupling line output ports is easier to adjust, so that the phase slope difference of the signal at each main line output port and each coupling line output port is reduced, and the antenna gain can be effectively improved.

The present invention discloses a circular polarization switching phased array antenna and a polarization switching method, and relates to the field of phased array antennas. The phased array antenna includes N 2*2 TR subarrays and N 4-channel multifunctional chips, each TR subarray includes four circular polarization antenna units, each antenna unit includes a patch and a feeding point located on the patch, and each antenna unit is fed by a single feeding point; the two diagonal circular polarization antenna units in the TR subarray respectively constitute a left-handed circular polarization antenna unit group and a right-handed circular polarization antenna unit group; the feeding points on each antenna unit group are independent and orthogonal to each other, and the four pins of each 4-channel multifunctional chip are connected to the four feeding points on the TR subarray in a one-to-one correspondence. The present invention adopts two independent orthogonal single-feed circular polarization antenna units, and two sets of circular polarization antenna units are independently triangularly grid-arranged and fused. By closing half of the active antenna channels, the polarization switching function of the circular polarization antenna is achieved, thereby forming a complete circularly polarized switchable phased array antenna.

The present disclosure provides an electronic device. The electronic device includes a circuit structure, an interconnection structure disposed over the circuit structure, and an antenna element disposed over the interconnection structure. The antenna element defines a first recess having a sidewall, and the sidewall of the first recess of the antenna element is configured to feed a signal to the antenna element and is electrically connected to the interconnection structure.

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.