2795results about "Antenna arrays" patented technology

The invention relates to the technical field of electronic information, in particular to a multi-band cooperative interference gallium nitride phased-array antenna control method and system. The method comprises the steps of extracting key parameters of electromagnetic signals, and generating a cooperative interference strategy combination; mapping the frequency band optimization weight to a dynamic working mode of the gallium nitride power amplifier unit, adjusting the radiation pattern characteristics of the reconfigurable dipole array according to the power distribution parameters, and constructing a composite beam forming framework; phase weighting and spatial multiplexing are carried out on the interference signals of all the frequency bands based on the composite beam forming architecture, and a multi-beam interference cluster is generated; thermodynamic state data of the gallium nitride power amplifier module in the multi-beam interference cluster generation process are collected in real time, and heat dissipation parameters of the liquid cooling system are regulated and controlled according to the thermodynamic state data. Intelligent collaboration and accurate pointing of multi-band interference signals are realized, the interference coverage range and the energy utilization rate are improved, and an efficient interference system integrating electromagnetic sensing, multi-beam collaboration and thermal management is formed.

A horizontally polarized omnidirectional multi-band antenna structure includes a substrate and two structurally-symmetric radiators, each being provided on a layout area on one of the two opposite sides of the substrate, and including a X-shaped primary microstrip line, four secondary microstrip lines, four primary stubs, four secondary stubs and four resonators. The primary microstrip line has four end points arranged with the secondary microstrip lines along different extending directions. The primary stubs extend along different directions from four sections of the primary microstrip line. Each secondary microstrip line is provided with one of the secondary stubs. Resonators are provided between four end points of the primary microstrip line and the primary stubs. The antenna structure supports WiFi 6E / WiFi 7 frequency bands including the 2 GHz, 5 GHz and 6 GHz bands, has characteristics of horizontal polarization and omnidirectionality, and effectively satisfies the needs for miniaturized multi-band and wide band antennas.

The invention discloses a linear polarization in-band scattering reconfigurable radiation time-sharing regulation array antenna, which belongs to the technical field of antenna engineering, and comprises an antenna unit and a one-to-sixteen power divider, the antenna unit is connected with the one-to-sixteen power divider, and the antenna unit is connected with the one-to-sixteen power divider. The antenna unit comprises a first radiation patch, a first dielectric substrate, a second radiation patch, a second dielectric substrate, a feed coupling branch knot, a feed metal column, a third dielectric substrate, a perforated metal floor and a fourth dielectric substrate, and a first PIN tube, a second PIN tube, a feed transmission line, a direct current bias device, a reflective phase shifter and a low-pass filter are arranged at the bottom of the fourth dielectric substrate; the direct-current bias device is connected with the reflection type phase shifter and the feed transmission line through the low-pass filter, and the feed metal column sequentially penetrates through the third dielectric substrate, the perforated metal floor and the fourth dielectric substrate and is connected with the feed transmission line. According to the invention, the normal radiation efficiency of the antenna can be ensured, and the reconfigurability of antenna scattering can be effectively improved.

The present invention discloses a high polarization isolation dual-polarization tightly coupled ultra-wideband phased array antenna. It includes a dipole unit, a coaxial feed line, a metal reflective floor, a fishbone cross-shaped patch and a cross-shaped metal wall; the dipole unit includes a horizontal and two vertical dielectric substrates, and the vertical dielectric substrates are orthogonal to each other; two groups of coplanar and mutually perpendicular butterfly-shaped dipole units are printed on the lower surface of the horizontal dielectric substrate; a fishbone cross-shaped patch is embedded at the intersection of the ends of the dipole units, and there is a gap between the patch and the end of the dipole; a patch with an etched groove line is printed on one side of the vertical dielectric substrate; the patch is connected to the dipole; the microstrip line on the upper surface of the horizontal dielectric substrate is connected to the inner conductor of the coaxial feed line, and the dipole is connected to the outer conductor of the coaxial feed line; the fishbone cross-shaped patch is in contact with the cross-shaped metal wall. The present invention realizes high polarization isolation and low cross-polarization of the dual-polarization tightly coupled ultra-wideband phased array in a lower frequency band without the need for a complex feeding network.

The wireless RF semiconductor system is described for use in wireless communication devices that operate in frequency range from 6 GHz to 100 GHz. The system comprises of at least one RF antenna and at least one active RF component fabricated (or built) on the same semiconductor substrate inside a one single packaged module. The wireless RF semiconductor system is described in a variety of different configurations with its functionality divided up over several single chip circuits. The system simplifies assembly, reduces size and cost, and allows for a quick time to market, while maximizing the RF performance demanded by fixed and mobile 4G, 5G and other wireless standards.

The invention discloses a reciprocity theorem-based array antenna multi-beam pattern synthesis method, which comprises the following steps of: establishing an array antenna model in electromagnetic simulation software, and extracting a radiation pattern of each antenna unit; defining the number and direction of to-be-formed beams and the gain ratio between the beams; establishing an array antenna energy transmission efficiency transfer function, calculating scattering parameters of each antenna unit of the array antenna through a reciprocal theorem and coordinate transformation, and constructing a scattering parameter matrix of a multi-antenna system; automatically adjusting parameters by using a particle swarm algorithm, and dynamically regulating and controlling the gain proportion between the beams; the optimal excitation value of each antenna unit is obtained, and a target beam is generated after actual loading. According to the invention, the multi-beam synthesis result of the array antenna is more convenient, more stable and more flexible.

The invention discloses a large-scale phased array multi-channel partition beam control method and device based on an FPGA and a storage medium. The method comprises the steps that a control instruction of an antenna control unit is acquired; analyzing the control instruction which is verified to be correct, judging an instruction type according to an analysis result, when the instruction type is a beam switching instruction, determining a beam control parameter in the instruction, and calculating a base code of the phased-array antenna according to the beam control parameter; the array elements of the phased-array antenna are divided into a plurality of areas, according to the base codes and the position coordinates of the array elements, the wave control codes of the array elements are calculated in parallel by adopting a multi-channel partitioning method, and the wave control codes are normalized and then written into a beam forming chip in parallel; and after the operation is completed, a corresponding response instruction is sent to the antenna control unit. The method has the advantages of being high in beam switching speed, small in resource consumption and good in universality, an array can form a sparse array in the mode of sending a control instruction, and therefore side lobes are restrained, and power consumption is reduced.

An antenna is provided. The antenna includes a feed line structure; a first low dielectric constant layer on the feed line structure; a first flexible layer on a side of the first low dielectric constant layer away from the feed line structure; a phase shifter on a side of the first flexible layer away from the first low dielectric constant layer; a first ground plate on a side of the phase shifter away from the first flexible layer; and a radiating plate on a side of the first ground plate away from the phase shifter. The first low dielectric constant layer has a dielectric constant in a range of 1.5 to 3. The first flexible layer has a Flexural modulus in a range of 0.01 to 10.0.

A metasurface array comprises a plurality of electronic control metasurface units, and each electronic control metasurface unit comprises a patch layer, a first dielectric substrate layer, a floor layer, a bonding layer, a second dielectric substrate layer and a bias line layer from top to bottom; the patch layer comprises four square double-ring metal patch structures and a dipole arm structure provided with a pin diode, a central metal through hole penetrating downwards to be connected with the offset line layer is formed in the crossed position, and corresponding to the diameter of the central metal through hole, only the diameter of an opening in the floor layer is large, and the other layers are the same; a peripheral metal blind hole penetrating through the first dielectric substrate layer is downwards formed in the central point of each square double-ring metal patch structure; the bias line layer is of a fan-shaped branch knot structure; under the cooperation of the feed source antenna, the electric control metasurface unit realizes the on-off of a pin diode through phase distribution coding under the control of the direct current control circuit board and the ARDUINO microprocessor, and realizes beam scanning in a specified direction. The antenna is wide in frequency band and low in cost.

The invention relates to the technical field of wireless communication and sensing, and particularly discloses a holographic amplitude weighting-based two-dimensional antenna array multi-beam scanning method, which comprises the following steps of: determining the position information of each radiation unit in a two-dimensional antenna array, including calculating the interval and the arrangement mode of the units; an amplitude weighted value of each radiation unit is generated according to the target wave direction, a two-dimensional multi-beam holographic amplitude weighting technology is used, and the radiation unit amplitude weighted values are determined through the two-dimensional multi-beam holographic amplitude weighting technology; generating a corresponding binary discretization coding sequence based on the amplitude weighted value so as to control the excitation amplitude of each radiation unit; and designing a liquid crystal-based Ka-band two-dimensional holographic beam scanning leaky-wave antenna square array, and regulating and controlling a radiation pattern of a two-dimensional antenna array through the coding sequence to realize multi-beam scanning.

The invention relates to a circularly polarized quasi-absorption filtering phased-array antenna. A unit of the antenna comprises a multi-layer dielectric substrate, a semi-cured layer, a metal floor, a stacked patch and an orthogonal H-shaped gap, the first dielectric substrate is provided with a parasitic square loop, the second dielectric substrate is provided with a cross-shaped strip, and radiation zero points are introduced to the upper and lower edges of a passband respectively; the 3dB orthogonal directional coupler and the L-shaped feeder form a feed network, circularly polarized radiation is realized through slot coupling, and an isolation port of the 3dB orthogonal directional coupler is connected with a 50-ohm resistor, so that the energy of a lower stop band is absorbed, the energy of an upper stop band is reflected, and a quasi-absorption filtering characteristic is presented; the antenna is compact in structure and easy to process, has wide axial ratio bandwidth and good filtering performance, and when array scanning is 0-45 degrees, the overlapping impedance bandwidth is 12%, the axial ratio bandwidth is 15.8%, and the maximum scanning loss is 2.3 dB; the antenna is compact in structure and easy to process, has wide axial ratio bandwidth and good quasi-absorption filtering performance, and has huge potential in millimeter wave satellite communication application.

A hybrid antenna substrate of an embodiment comprises: a core part including a core layer and a core wiring layer laminated in the vertical direction; and an antenna part disposed on the core part, wherein: the antenna part comprises a plurality of antenna wiring layers successively laminated on the core part and antenna insulating layers disposed between the plurality of antenna wiring layers; and the core layer has a greater dielectric constant than the antenna insulating layers.

Embodiments generally relate to small satellites. Example small satellites may include a satellite body having a rectangular tile shape, with a substantially flat front side having a length and width and being separated from a substantially parallel back side by a depth, wherein the depth is equal to or less than a third of the length and the width. A patch antenna array may be positioned on the front side and / or a large patch antenna may be positioned centrally on the front side. A solar panel may be positioned on or coupled to the back side.

The invention relates to the technical field of antennas, in particular to a multi-level intelligent overheating protection system and method based on a gallium nitride module antenna. According to the method, a thermal load optimal migration path is analyzed based on a virtual thermal capacity network model, and an input impedance matching network of a target unit is synchronously tuned according to the thermal load optimal migration path to compensate beam phase distortion caused by thermal migration; and according to the boundary constraint condition of the real-time threat scene feature injection virtual thermal capacity network model, dynamically solving a game equilibrium solution of a thermal load migration path and a beam parameter tuning amount, and generating a thermal-radio frequency combined control instruction set. According to the method, full-process closed-loop control from thermal inertia characteristic analysis, thermal network modeling to thermal-radio frequency collaborative optimization is realized, so that the gallium nitride antenna system can intelligently plan an optimal thermal migration path and compensate thermally induced performance distortion in real time in a complex thermal environment and a threat scene, and finally dual optimization of heat dissipation efficiency and radio frequency indexes is achieved.

An antenna apparatus includes a multi-layer printed circuit board, an antenna, and a floating patch group. The multi-layer printed circuit board includes a first metal layer, a first dielectric layer, a second metal layer, a second dielectric layer, and a third metal layer. The antenna is formed from at least one of the first metal layer, the second metal layer, and the third metal layer. The floating patch group is located in the multi-layer printed circuit board and includes a plurality of floating patches. The floating patch has a width. There is a gap between the floating patch and an adjacent floating patch. The floating patches have the same or similar width and the same or similar gap. The floating patch group is arranged in a metal layer where the antenna is located. There is a spacing between the floating patch group and the antenna.

The embodiment of the invention provides a feed network, an antenna device, an active antenna unit and communication equipment, and the feed network controls the phase state of a phase shifter through light, does not need to use a control line, enables the feed network comprising the phase shifter to adopt an inverted microstrip structure, and reduces the insertion loss between a radio frequency channel and an antenna.

Wireless devices are commonly carried in fabric-based apparel. Printing metamaterial structures on fabric substrates allows for the ability to create fabric metamaterial layers. A reconfigurable RF based fabric system simply by physically removing or adding different fabric-based metamaterial layers to different regions of the apparel. The fabric-based metamaterial can be used in various filtering applications where the control of phase, reflection angle, refraction angle, polarization, absorption, and transmission of the impinged electromagnetic wave can all be manipulated. Additionally, sophisticated metamaterial systems can be created by combining different metamaterial layers separated above each other. A controllable absorber metamaterial system can be made consisting of two layers. The first layer an electronically controllable that can controllably change between a band-pass and band-reject filter in a relevant frequency band and a second absorptive layer. Vehicles with adjustable metamaterial absorber systems, integrated on the outside or inside of the RF transparent fuselage, have the ability to control their radar cross section dynamically for the purposes of evading detection or spoofing their size by looking larger or similar to vehicles of different radar cross section.

The invention relates to a decoupling radiation unit, an antenna device, an antenna array and communication equipment, a radiation line segment is concavely arranged in a direction deviating from the center of an oscillator arm to form a concave part, that is, the radiation line segment is arranged to be a curve, and an opening faces the center of the oscillator arm, so that the current path of the oscillator arm can be optimized, the antenna aperture is relatively larger under the same size, and the antenna efficiency is improved. The gain is higher; besides, the arrangement mode of the coupling structures on the oscillator arms can realize mutual reduction of interference current coupled by the coupling structures and interference current coupled by the radiation line segments, thereby achieving the purpose of reducing the interference current, and reducing the radiation of the antenna to the interference current. Therefore, the decoupling radiation unit in the embodiment is larger in aperture, high in gain and excellent in decoupling effect, so that the influence of the low-frequency radiation unit on the arrangement of the high-frequency radiation unit in the multi-frequency antenna array is reduced, and the multi-system common antenna with miniaturization, low cost, high gain and low grating lobe has obvious advantages.

The utility model provides a dual-frequency common-aperture antenna structure and an antenna array, and relates to the technical field of microwave communication. Through the combination of the high-frequency side-fire structure and the low-frequency end-fire structure, the problem of high and low-frequency crosstalk is effectively solved, a filtering branch knot or a filter does not need to be additionally arranged, and it is ensured that the corresponding common-caliber antenna structure has the broadband characteristic and high radiation efficiency; meanwhile, the low-frequency end-fire structure is slotted on the high-frequency side-fire structure adopting a multilayer circuit board lamination design, so that the low-frequency end-fire structure can realize an accurate alignment effect and an efficient assembly welding effect on the high-frequency side-fire structure based on a slot position; the assembling efficiency, the product qualification rate, the antenna integration degree and the product reliability of the common-caliber antenna structure are further improved.

The invention provides a functional composite one-dimensional metal cavity slot array antenna, which belongs to the field of antennae, and comprises a feed cavity and a cover plate located at the top of the feed cavity, a plurality of groups of periodic intermediate-frequency anti-interference metal blocks and high-frequency anti-interference metal blocks are arranged in the feed cavity, and a radiation slot is formed in the cover plate. The polarization conversion structures are arranged on the two sides of the radiation slot in a stepped and open manner to form an undulating shape; an antenna array is also provided. An anti-interference periodic structure is embedded in the feed cavity, the antenna is endowed with anti-interference capacity in multiple different frequency bands, the polarization conversion structures are arranged on the two sides of the radiation slot in a stepped and open mode to form an undulating shape, an electromagnetic signal is input into the feed cavity, linearly polarized electromagnetic waves are radiated outwards through the radiation slot, and the antenna is formed. Linear polarization electromagnetic waves are decomposed into a group of orthogonal components with the same amplitude after passing through the polarization conversion structure, a 90-degree phase difference exists between the two components, circular polarization is formed to radiate towards the space, the polarization conversion structure is simple in structure and convenient to process, and the scattering characteristic of the antenna is improved.

The present invention discloses a broadband 1-bit reconfigurable circularly polarized reflectarray antenna based on a multi-resonant structure, which includes a reconfigurable circularly polarized reflection functional layer, a circularly polarized horn antenna, and an acrylic bracket. The reconfigurable circularly polarized reflection functional layer is composed of M×N circularly polarized reflectarray antenna elements with the same structure, which are periodically arranged at an interval of 0.4125λ0. The circularly polarized reflectarray antenna element consists of a radiation layer and a DC bias layer. The radiation layer includes a circuit pattern designed based on a multi-resonant structure, PIN diodes, a radiation dielectric layer, and a reflection bottom plate. The DC bias structure includes a DC bias dielectric layer and a DC bias circuit. By controlling the on-off states of four PIN diodes, 1-bit regulation of the unit reflection phase can be achieved. By adjusting the states of each circularly polarized reflectarray antenna element, a beam scanning function of ±60° can be realized, and it can be applied in wireless communication and satellite communication systems.

Disclosed is a radar antenna which has a shielding space corresponding to each antenna of an antenna body by using an accommodation hole of a shielding member to prevent mutual coupling between antennas. The disclosed radar antenna comprises an antenna body which has a first surface and a second surface and in which a plurality first slot groups are formed to be spaced apart from each other on the first surface, and a shielding member which is stacked on the first surface of the antenna body and in which a plurality of accommodation holes are formed to respectively overlap the plurality of first slot groups.

The invention relates to the technical field of array antennas, in particular to a sparse linear array beam forming method and system with unit rotation and mutual coupling considered. Array elements are obtained, Euler angle derivation is carried out on rotation of the array elements around the z axis, and a radiation electric field after rotation is obtained; setting a beam forming target according to the electric field of the radiation field; according to a beam forming target, optimizing the position, the rotation angle and the excitation phase of an array element by adopting a random optimization algorithm, and generating an initial beam scheme; an active directional diagram is extracted from the initial beam scheme according to full-wave simulation, the active directional diagram is combined with a CAL-SAPSO algorithm to optimize the array element position, the rotation angle and the excitation phase, and a final array element directional diagram is generated; according to the invention, by introducing array element rotation and considering a mutual coupling effect, efficient beamforming of the sparse wiring array is realized, the radiation characteristic of the antenna array can be adjusted more finely, the peak side lobe level and the cross polarization level are effectively reduced, and the overall performance of the system is improved.

The invention discloses a microwave and millimeter wave common-aperture antenna with millimeter wave two-dimensional beam scanning capability, and a 4 * 4 millimeter wave phase control patch antenna array is embedded into a microwave hollow patch antenna and is coplanar and shares the same aperture. The millimeter wave antenna array can support two-dimensional beam scanning in a 5G millimeter wave n257 frequency band, and impedance matching of the microwave patch antenna can be improved. The microwave hollowed-out patch antenna adopts a split patch form, a square groove structure for hollowing reserves a position for embedding of a millimeter wave antenna array, a current path is added, and the working mode of the microwave antenna is moved to a low frequency, so that the microwave antenna can work in a frequency band of 4.7-5.6 GHz. According to the invention, microwave / millimeter wave dual-band coverage is realized, the problems of low space utilization rate, incapability of realizing millimeter wave two-dimensional beam scanning capability and the like of a common-aperture antenna in the prior art are solved, and the antenna is compact in size.

According to one embodiment, electronic circuitry, includes a first radiating element; a second radiating element; a first circuit element including a first end and a second end, the first end being connected to one end of one of the first radiating element or the second radiating element; and a second circuit element connected between the second end of the first circuit element and one end of another of the first radiating element or the second radiating element.

The invention discloses a novel metasurface matching layer for an ultra wide band curved surface array antenna, which comprises a curved surface supporting material layer, a dielectric substrate and a metasurface metal layer, and is characterized in that the dielectric substrate is bent and conformal on the curved surface supporting material layer, and the metasurface metal layer is arranged on the dielectric substrate; and a plurality of metasurface units are uniformly distributed on the metasurface metal layer. According to the novel metasurface matching layer, curved surface conformal can be realized, and the broadband impedance matching capability and the large-angle scanning performance of the ultra-wideband curved surface array antenna can be improved. According to the equivalent model theory of the novel metasurface matching layer, the novel metasurface matching layer provided by the embodiment of the invention can be equivalent to a dielectric layer with a high dielectric constant, the impedance matching of the antenna is improved, and compared with a common dielectric layer, the novel metasurface matching layer for the ultra-wideband curved surface array antenna provided by the embodiment of the invention has the advantages of light weight, low cost and the like. The cost is low, the processing is easy, and the development prospect is great.

A transparent antenna unit, comprising: a phase modulation layer, wherein the phase modulation layer comprises a first dielectric plate, a tunable dielectric layer and a second dielectric plate which are stacked in sequence, a first functional electrode located between the first dielectric plate and the tunable dielectric layer, and a second functional electrode located between the tunable dielectric layer and the second dielectric plate, and the orthographic projections of the first functional electrode and the second functional electrode on the first dielectric plate overlap with each other; and a transparent feed layer located on the layer of the first dielectric plate away from the first functional electrode, and connected to the first functional electrode or the second functional electrode.

The invention belongs to the technical field of antennas, discloses a double-frequency common-caliber high-isolation phased-array antenna in a sparse array distribution mode, and mainly solves the problems that an existing double-frequency common-caliber array antenna sparse distribution optimization algorithm is large in calculation amount and low in design efficiency. According to the invention, through the thirteen-sided Einstein pattern, aperiodic tiling of an infinite plane can be realized through a certain splicing rule. A Ka-band high-frequency antenna and a K-band low-frequency antenna are placed at the gravity center of the Einstein pattern, and the high-frequency antenna and the low-frequency antenna are distributed in a staggered mode in a translation mode. The antenna unit adopts a cross symmetric array antenna, and high isolation of the dual-frequency antenna unit is realized by loading a coaxial filter at the bottom of the antenna unit. The rear end of each antenna unit is connected with a T / R assembly, and array beam scanning is realized by controlling the amplitude and phase of an input signal. The method is low in arrangement cost and high in design efficiency, and can be used for radar, communication, navigation and information confrontation.

The application discloses a Ka dual-circular polarization antenna unit and a flat plate array antenna, which comprises, from top to bottom, a radiation patch layer, a slot coupling layer, a waveguide transmission layer and a feed network layer; a plurality of microstrip line structures are arranged on the radiation patch layer, the microstrip line structure comprises a first microstrip line and a second microstrip line, and the first microstrip line and the second microstrip line form a 90-degree phase difference of electric field orthogonal components; the slot coupling layer comprises a second substrate, the second substrate is provided with a source collapse groove corresponding to the microstrip line structure, and the slot coupling layer and the radiation patch layer are relatively displaced under the action of an external force; the microstrip line structure corresponding to the source collapse groove is switched between a left-handed circular polarization microstrip line and a right-handed circular polarization microstrip line through the relative displacement; and the source collapse groove and the first substrate form a linear polarization feed source. According to the application, each dual-circular polarization feed source is used to form dual-circular polarization, and a polarization partition plate of a feed source waveguide is not relied on, so that the thickness of the antenna structure is reduced.

The invention relates to the technical field of dual circularly polarized antennas, and discloses a dual circularly polarized antenna, a sub-array, a one-dimensional phased array and a planar phased array. The antenna comprises a direct dual-circularly-polarized radiation structure layer, a circularly-polarized electromagnetic metasurface coupling layer and a circularly-polarized electromagnetic metasurface parasitic layer which are sequentially stacked from bottom to top. The broadband wide-angle scanning dual-circularly polarized phased array provided by the invention has the advantages of low cost, low profile, high radiation efficiency, broadband, dual-circularly polarized wide-angle beam scanning and the like, and is suitable for advanced satellite internet communication and navigation application.