69results about How to "Implement beam scanning" patented technology

The invention discloses a half-mode substrate integrated waveguide leaky-wave antenna for variable polarization and frequency scanning, and belongs to the technical field of wireless communication. The antenna comprises a medium substrate with metal patches arranged on two faces, a half-mode substrate integrated waveguide antenna array A, a half-mode substrate integrated waveguide antenna array B, four micro-strip feeder lines, a 3dB directional coupler and two micro-strip connecting lines are arranged on one metal patch, an interdigital groove inclined by -45 degrees and a metal through hole A are etched in the half-mode substrate integrated waveguide antenna array A, and an interdigital groove inclined by 45 degrees and a metal through hole A are etched in the half-mode substrate integrated waveguide antenna array B. Compared with the prior art, the half-mode substrate integrated waveguide leaky-wave antenna is low in loss, low in cost, small in size and capable of achieving multiple kinds of polarization simply and effectively and achieving beam scanning economically and practically.

The invention discloses a dual-band dual-polarization wave-beam-controllable microstrip reflective array antenna. The dual-band dual-polarization wave-beam-controllable microstrip reflective array antenna comprises a dielectric substrate, a reflective structure and an antenna feed source, wherein M*N periodically-arranged metal patch units are etched on the upper surface of the dielectric substrate; M and N are integers, wherein M is greater than 1 and less than 50; N is greater than 1 and less than 50; the reflective structure is positioned on the lower surface of the dielectric substrate; a metal floor structure is adopted; and the antenna feed source is positioned in the upper half space of a radiation structure. By adoption of the dual-band dual-polarization wave-beam-controllable microstrip reflective array antenna, the problem that continuous wave-beam scanning cannot be realized by a conventional microstrip reflective array antenna which can only work in a single-band or single-polarization mode is solved; by employing the metal patch units and variable capacitance diodes, the dual-band dual-polarization wave-beam-controllable microstrip reflective array antenna realizes reconfigurable frequency, reconfigurable polarization and wave-beam continuous scanning, thereby satisfying requirements of a radar and a communication system on multifunctional caliber multiplexing; and therefore, the dual-band dual-polarization wave-beam-controllable microstrip reflective array antenna can be applied to the wireless communication field.

The invention discloses a phased array radar monopulse high-resolution angle measurement system and method. The system includes at least one transmitting antenna for transmitting monopulse signals, atleast two receiving antennas with the same configuration for receiving the monopulse echo signals reflected by the target to form a beam scanning angle, a signal processor for processing the monopulse echo signals received by the receiving antennas, calculating information of the target and the echo power sum value of the receiving antennas under the action of the target, and also for weighting of received / transmitted monopulse signals, correction of amplitude and phase and storage or loading of working parameters, and an upper computer for receiving the information transmitted by the signalprocessor through a network interface. The system has the advantages that the system adopts a mode that the transmitting antenna and the receiving antenna are separated, formation of low sidelobe transmitting and receiving beams is easy to realize, the scanning range is increased, the problem that the traditional monopulse angle measurement cannot be detected when the difference between two targetangles is very small is solved by the method, and the super-resolution of targets with adjacent angles is realized.

The invention discloses a low-cost and low-profile broadband Massive MIMO antenna unit, comprising a conductor parasitic patch, a conductor coupling sheet, an antenna radiator and a conductor grounding layer which are arranged in turn and at intervals from top to bottom along a vertical straight line, wherein dielectric layers are arranged between adjacent parts. A vertical slot and a horizontal slot are symmetrically arranged at the center position of the conductor coupling sheet, and the vertical slot and the horizontal slot are orthogonal to each other and are used to expand the frequency bandwidth of the antenna. The antenna radiator is provided with a horizontal polarization feed point and a vertical polarization feed point with the feed directions orthogonal to each other. A first isolation slot is arranged at the center position between the horizontal polarization feed point and the vertical polarization feed point. Second isolation slots are arranged on the two sides of the horizontal polarization feed point and on the two sides of the vertical polarization feed point. The first isolation slot and the second isolation slots are used to improve the isolation between the horizontal polarization feed point and the vertical polarization feed point. The low-cost and low-profile broadband Massive MIMO antenna unit has the technical features of wide frequency bandwidth, high degree of isolation, high single-antenna gain, low cost and low profile.

The invention discloses a two-dimensional wave beam scanning antenna array based on SIW (Substrate Integrated Waveguide). The two-dimensional wave beam scanning antenna array comprises structures including an SIW slot antenna, a first medium substrate, a second medium substrate and the like. Compared with a common two-dimensional wave beam scanning antenna array, the two-dimensional wave beam scanning antenna array improves a logic diagram of a two-dimensional wave beam scanning network and further usesmultiple groups of phase shifters with different phase shifting values, so that wave beam scanning of any angle can be realized on both two dimensions, and the gain of each wave beam can be above 11dBi. In addition, the structure is realized by an LTCC (Low Temperature Co-fired Ceramic) technology, an integral structure is designed into a multilayer structure by the multilayer characteristics of the LTCC, energy transmission is carried out among layers through slots, and the dimension of the integral structure is effectively reduced.

The invention provides a broadband two-dimensional beam scanning dielectric resonant antenna and a wireless communication system. The antenna comprises a first dielectric resonator, a second dielectric resonator, a third dielectric resonator, a dielectric substrate, a feed line and a ground plate. The feed line and the ground plate are arranged on both sides of the dielectric substrate. The groundplate is provided with at least two intersecting rectangular slits. The feed line is centered on the intersection of at least two intersecting rectangular slits, and is arranged on one side, which isaway from the ground plate, of the dielectric substrate in a circular arc shape. The first dielectric resonator is arranged between the ground plate and the second dielectric resonator. The second dielectric resonator is arranged between the first dielectric resonator and the third dielectric resonator. The center of the first dielectric resonator, the center of the second dielectric resonator and the center of the third dielectric resonator are in line with the circle center. The feed of the feed line is coupled to the ground plate by the slits and excited, so that the third dielectric resonator rotates to achieve beam scanning. A receiving end can receive a signal.

The invention discloses a high-gain phased array microstrip antenna, which comprises a microstrip antenna array and a microwave lens covering the microstrip antenna array. The gain of the antenna array is improved by using the refraction and convergence characteristics of the microwave lens to electromagnetic waves, and further through controlling the amplitude and the phase of each excitation port in the antenna array, beam scanning is realized, the high gain and the beam control capability of a large-scale phased array antenna can be achieved by using a small-scale phased array antenna finally, and a new solution is provided for realization of a 5G base station based on a large-scale phased array antenna in a low structure complexity and low cost mode.

The invention discloses a phased array circular array antenna system which comprises a circular array antenna. The circular array antenna comprises a circular metal reflector and an antenna unit fixedon the circular metal reflector. Multiple antenna unit groups are distributed along the circumference of the circular metal reflector. A row of antenna elements in the horizontal direction of the circular array antenna is connected to different RF switches according to a certain order, output ends of all RF switch in a row are connected the same secondary power splitter, and an output end of thesecondary power splitter is connected to a phase shifter to form a horizontal antenna array. According to the invention, the non-mechanical signal search and tracking is realized, the directional diagram scanning and tracking of 360 degrees in a horizontal direction and 90 degrees in a vertical direction are carried out on a signal in movement, the search and tracking of the signal are achieved through electric scanning, the reliability is good, the capture time of an electric scanning signal can be calculated in milliseconds, a beam can be changed, different directions can be pointed in scanning and tracking, and complex networking such as relaying can be achieved.

The invention discloses an intelligent skin antenna capable of self-adaptively changing radiation and scattering characteristics, and aims to provide an intelligent skin antenna, which is capable of perceiving an external electromagnetic environment, and adjusting and controlling radiation / scattering characteristics in real time. The scheme in the invention is as follows: a Wearable sensor sends the fact that a radar wave monitoring result exists or not to a single chip microcomputer control unit through a multifunctional device; the single chip microcomputer control unit judges the radiation / scattering mode according to the TTL high and low levels of the address code corresponding to each channel of the multifunctional device; the radiation / scattering performances of the antenna are re-distributed according to requirements; furthermore, a power supply is controlled to apply different voltage values on a polyaniline conductive polymer, so that grading absorption of wave-transmitting radiation or radar wave of the intelligent skin antenna is obtained; in the radiation mode, a weight value obtained through a cloud genetic algorithm in advance is calculated into an amplitude / phase control code, and sent to an active antenna array, so that the low-sidelobe needle beam is realized; in the scattering mode, different voltage values are applied on an electrochromic skin wave-transmitting layer, so that wave absorption is realized; and the low interception probability and the low observable characteristic can be realized self-adaptively.

The invention discloses a medium-frequency simulated RoF (radio over fiber) type phase control active integrated antenna, which comprises a simulated light module, a medium-frequency transceiver module, radio transceiver modules and antenna units, wherein the simulated light module connected with a near-end machine is connected with the radio transceiver modules through the medium-frequency transceiver module; and each radio transceiver module is connected with one antenna unit. Different from the conventional array antenna, the medium-frequency simulated RoF type phase control active integrated antenna has the characteristics that each antenna unit in the active integrated antenna array is directly connected with one complete radio transceiver module, and a signal of each unit is subjected to power distribution / combination on the medium frequency, passes through the medium-frequency transceiver module and is connected with the light module and finally converted into a light signal through the light module for long-distance low-loss transmission; and the phase of the radio transceiver module behind each antenna unit is controllable, so that the wave beam of the whole array can be scanned in the perpendicular direction.

The present invention provides an interdigital slot unit loaded with capacitance variable diodes and a reconfigurable reflection array antenna. The interdigital slot unit comprises a metal patch layer, a dielectric layer and a metal grounding layer which are sequentially stacked from top to bottom; a transverse slot, a first longitudinal slot, a third longitudinal slot and a second longitudinal slot are formed in the metal patch layer; the first longitudinal slot and the third longitudinal slot have the same length and are symmetrically distributed at two sides of the second longitudinal slot, and the second longitudinal slot has the other length; the first longitudinal slot, the second longitudinal slot and the third longitudinal slot are parallel to one another; the first transverse slot vertically passes through the center of the first longitudinal slot, the center of the second longitudinal slot and the center of the third longitudinal slot; two ends of the transverse slot are respectively loaded with two capacitance variable diodes; and the length setting of the three longitudinal slots satisfies a condition that the resonance frequency of the first longitudinal slot and the third longitudinal slot is 1.2 times to 1.5 times of the resonance frequency of the second longitudinal slot. The aperture efficiency of the reconfigurable reflection array antenna designed on the basis of the interdigital slot unit can reach 74%.

The invention discloses a two-dimensional millimeter wave circularly-polarized wide-angle scanning phased-array antenna, and relates to the technical field of millimeter wave antennas. According to the technical scheme, an antenna radiation patch is connected with a rectangular parasitic patch through a high impedance matching microstrip line which is provided with a cross-carved equal length in the center and is used for carrying out impedance matching on the antenna, and a windmill-shaped microstrip radiation patch excitation equal-amplitude in-phase polarization orthogonal degenerate mode is manufactured on the symmetric center of a diagonal bisector of the corner of the antenna radiation patch; feed probes penetrate through the antenna dielectric layer and are connected with the antenna radiation patch through the four rectangular parasitic patches, the four feed probes 4 of each antenna unit feed through rotary feed structures which are equal in amplitude and sequentially differ by 90 degrees, and the windmill-shaped microstrip radiation patch is connected with rectangular blocks of the four rectangular parasitic patches of the four metallized probes for feed. feeding in equal-amplitude excitation with the phase difference of 90 degrees is performed in sequence to form circular polarization radiation, and the antenna arrays are arranged in a rectangular manner at equal intervals according to unit intervals to form an antenna array surface.

The invention relates to an array antenna wave beam shaping system and a wave beam scanning method thereof. The system comprises at least two antenna arrays, each antenna array comprises two antenna subarrays in anti-phase coupling, signals of the antenna arrays are weighted, vector composition is carried out on the weighted signals, and an antenna wave beam is obtained. The signal weighted values of the antenna arrays are changed to realize antenna wave beam scanning.

The invention particularly relates to a liquid crystal-based electric control scanning waveguide leaky wave antenna, which comprises N unit arrays, wherein N is larger than or equal to 2; the N unit arrays are embedded into a dielectric substrate, and is characterized in that the unit array sequentially comprises a micro-strip line, a dielectric substrate, a lower-layer metal floor, a liquid crystal layer, an upper-layer metal floor and a metal patch from bottom to top. The micro-strip line is located in the middle of the lower surface of the unit arrays; a gap is formed in the middle of the upper-layer metal floor, and the gap is H-shaped when viewed from the side face. Liquid crystal material is filled between the two metal floors and the H-shaped gap; and at least one rectangular gap isformed in the middle of the metal patch. According to the antenna, no phase shifter can be realized, and the target radiation characteristic of the antenna can be realized only by using an amplitude-weighted beam control method to change the amplitude of an array element without changing the phase and the antenna parameters.

The invention provides a dual-waveband common-caliber antenna. The dual-waveband common-caliber antenna comprises a C-band horizontally-polarized antenna, a C-band vertically-polarized antenna and an L-band vertically-polarized antenna, wherein the C-band horizontally-polarized antenna and the C-band vertically-polarized antenna are waveguide slot antennas, the L-band vertically-polarized antenna is a long slot antenna, the C-band horizontally-polarized antenna and the C-band vertically-polarized antenna employ waveguide end feed, and the L-band vertically-polarized antenna employs coaxial feed. The dual-waveband common-caliber antenna has advantages of compact structure, flexible feed, high isolation level, high caliber efficiency, light weight, electrical scanning, double bands and multi-polarization property and is convenient for large-scale array plane establishment.

The invention discloses a wide-angle beam scanning reflector antenna which has the advantages of low power consumption, high transmission efficiency and unlimited polarization mode. According to the technical scheme of the invention, an azimuth servo mechanism is connected with a pitch servo mechanism to form a combined two-dimensional servo mechanism; the two-dimensional servo mechanism is connected with a sputter plate (3); a feed source (4) is fixed at the center of the sputter plate through a waveguide feed line (10); a reflector (2) connected by a bent structural member (9) fixedly arranged on an antenna platform (1) is arranged below the sputter plate; the azimuth servo mechanism drives the pitch servo mechanism to drive the sputter plate to rotate around an azimuth rotation axis (7)and a pitch rotation axis (8), so as to realize limited scanning of the pitch plane of an antenna beam and wide angle scanning of the azimuth plane; after an electromagnetic wave is transmitted by the feed source to the reflector, the electromagnetic wave is reflected, defocused and projected onto the sputter plate; and after being reflected by the mirror image of the sputter plate, the electromagnetic wave is emitted.

A Massive MIMO electrical adjusting antenna comprises a physical phase shift portion and a digital phase shift portion. The physical phase shift portion comprises a radiation unit module, a power division network module, a phase shifter module, a connection structure module, a driving device and an RET control portion which are successively connected from top to bottom. The radiation unit module comprises a plurality of groups of radiation units arranged in parallel. The power division network module comprises a plurality of groups of power division networks arranged in parallel. The phase shift module comprises a plurality of phase shifters arranged in parallel, and the connecting structure module comprises a plurality of connecting structures arranged in parallel. The plurality of radiation units in a single group are connected in parallel and are correspondingly connected with a group of power division networks. The single-group power dividing network is connected to one phase shifter, the phase shifter is correspondingly connected with the connecting structure respectively, the connecting structures are connected to the driving device together, the driving device is electrically connected with the RET control portion, and the connecting structures are connected with the driving device and the phase shifters respectively and drive the phase shifters to move. In the invention, the number of ports of the antenna is prevented from being increased, and a beam scanning function can be covered more widely.

The invention provides a circularly polarized scanning array antenna based on a Rotman lens. The circularly polarized scanning array antenna comprises a phase shift network layer, a feed network layerand an antenna array layer. The phase shift network layer comprises a feed SMA connector 10 and a Rotman lens network, and the feed SMA connector 10 is electrically connected with the Rotman lens network. The feed network layer comprises a feed network 5 for feeding the antenna array layer. The antenna array layer comprises a plurality of patch antenna units 1 which are arranged in an array structure. Good circular polarization can be formed in the wave beam scanning direction, and circular polarization wave beam scanning of the array antenna is achieved.

The invention provides a circularly polarized antenna comprising a linearly polarized antenna source, a circularly polarized lens and a medium lens, wherein the linearly polarized antenna source is used for radiating linearly polarized waves; the circularly polarized lens includes a circular polarization device which is located above the linearly polarized antenna source and used for converting the linearly polarized waves into circularly polarized waves, the circular polarization device comprises a plurality of dielectric grids which are vertically and parallelly arranged, the plurality of dielectric grids are arranged in sequence along the horizontal direction at equal intervals; and the medium lens is connected above the circular polarization device and is used for refracting and converging the circularly polarized waves. The antenna can be used for 5G mobile communication, so that the wider axial ratio bandwidth is achieved, meanwhile, the gain of the antenna is improved, moreover,the wave beam scanning of the antenna is realized, and the antenna is suitable for the scene of mobile communication such as the fifth generation in the future.

The invention discloses a beam scanning method for beam width through superposition design of a plurality of sub-beams. The beam scanning method comprises the following steps: when a base station broadcasts a pilot signal in a cell discovery stage, establishing an expression of cell search delay and the minimum number of scanning beams, and covering the whole area through K times of beam scanning;dividing NT array antennas into M sub-arrays by utilizing a one-dimensional uniform linear array, establishing a sub-array model, giving a total array response, analyzing a relationship between the number M of the sub-arrays and the minimum number K of scanning beams, and adjusting the direction of each sub-beam to realize flexible beam width scanning; and analyzing the relationship between the beamforming gain and the number of array antennas in the expected coverage area, and designing and optimizing the number K of beams with flexible widths to maximize the system capacity. According to the beam scanning method, the scanning number of the beams with the flexible width is optimized, and the expenditure of user discovery is reduced by designing the number of the beams with the optimal flexible width, and the system capacity is greatly improved, and the problem of a coverage gap between user discovery and data transmission is solved.

The invention discloses a monopulse VICTS phased array antenna, which comprises a radiation layer, a parallel plate waveguide layer and a feed network layer arranged from top to bottom, wherein the feed network layer is used for accessing four paths of same TE mode wave signals and carrying out feed processing on the four paths of same TE mode wave signals; four paths of different TEM mode wave signals including a sum beam, a pitch difference beam, an azimuth difference wave velocity and a matched load are obtained and output to a parallel plate waveguide layer, the parallel plate waveguide layer is used for transmitting the four paths of different TEM mode wave signals input into the parallel plate waveguide layer to a radiation layer, and the radiation layer is used for radiating the four paths of different TEM mode wave signals input into the radiation layer to a free space. The antenna has the advantages that the measurement precision of the monopulse technology and the flexibility of the VICTS phased array antenna are effectively combined, beam scanning of the upper half space of the antenna can be rapidly and flexibly achieved at the same time, and meanwhile the tracking speed and the tracking precision are high.

The invention relates to a dual-polarization CTS (Continuous Transverse Stub) beam scanning antenna array. The dual-polarization CTS beam scanning antenna array comprises two orthogonal waveguide power distribution feed structures and a dual-polarization CTS antenna array, wherein the waveguide power distribution structures are connected to the side surface of the CTS antenna array and are used for generating a plane wave; the dual-polarization CTS antenna array achieves H-side scanning along with frequency change. The antenna array achieves H-side beam scanning through the change of the frequency at a port, and can achieve beam scanning of -22 degrees to 9 degrees in the change range of 5.1.6-12.8GHz.

The invention provides a phased array front end based on a nonlinear active antenna. A frequency source generates a transmission baseband signal which is distributed to a transmitting-receiving arrayby a power division network; the transmission baseband signal is filtered by a band-pass filter in the transmitting-receiving array; then the filtered transmission baseband signal is subjected to mixing with a local oscillator signal generated by an injection phase-locking array; the mixed signal is filtered by the band-pass filter to generate a transmission signal, and the transmission signal isamplified by a power amplifier after being selected by a transmitting-receiving switch; and finally the amplified signal is transmitted to an antenna through a circulator and radiated to the space. According to the invention, the phase of the local oscillator signal is controlled to realize beam pointing control. On one hand, the transmission loss of the array plane is reduced, and the efficiencyof the array plane is improved; and on the other hand, a microwave integrated chip or a micro microwave integrated chip is adopted to realize the chip design of the injection phase-locking array, theintegration level of the array plane is improved, the cost of the system is reduced, and the characteristics of high integration level and low cost are achieved.

The invention discloses a RoF (radio over fiber) phased active integral antenna array applicable to an FDD (frequency division duplexing) system. The RoF antenna array comprises an optical module, an intermediate-frequency transmitting and receiving module, a plurality of radiofrequency transmitting and receiving modules and antenna units; and the optical module connected with a near-end machine is connected with the radiofrequency transmitting and receiving modules by the intermediate-frequency transmitting and receiving module, and each radiofrequency transmitting and receiving module is connected with the corresponding antenna unit. Compared with the traditional array antenna, the RoF phased active integral antenna array has the advantages that each antenna unit in the active integral antenna array is directly connected with the corresponding complete radiofrequency transmitting and receiving module, signals of each unit are subjected to power division / combination in intermediate frequencies, are connected with the optical module after being processed by the intermediate-frequency transmitting and receiving module, and finally can be converted into optical signals by the optical module, and the optical signals can be transmitted at low loss over long distances; and the phase of each radiofrequency transmitting and receiving module behind the corresponding antenna unit is controllable, and accordingly beams of the integral array can be scanned in the vertical direction.

The invention discloses a low-profile broadband dual-circularly-polarized phased-array antenna system, which belongs to the field of antennae, and comprises an antenna array, a radio frequency module and a control module; the antenna array comprises a plurality of antenna units, each antenna unit comprises a dielectric layer and a radiation layer, and a 90-degree bridge is arranged in each dielectric layer; double feeding points are arranged on the radiation layer and are connected with the 90-degree bridge through feeder lines; the radio frequency module is a tile type radio frequency module, and the radio frequency module comprises a plurality of radio frequency channels correspondingly connected with the antenna units; and the control module is used for controlling transceiving switching and polarization selection of the radio frequency module. The tile type radio frequency module is adopted, the connection structure is simple, and cost increase and system loss increase caused by a complex inter-board interconnection mode are avoided; the array is rotated to optimize the axial ratio characteristic; and the 90-degree bridge improves polarization isolation of the antennas when the left-hand circular polarization and the right-hand circular polarization are implemented at the same time, the influence between the two kinds of polarization is reduced, and the formed phased array antenna system is high in integration level, low in profile and low in loss.

The invention discloses a highly-integrated dual-polarized base station array antenna suitable for 2 / 3 / 4 / 5G communication. The antenna is characterized by comprising a dielectric substrate; the frontsurface of the dielectric substrate is a reflecting surface; a low-frequency feed network and a high-frequency feed network are printed on the back surface of the dielectric substrate; n*n low-frequency array antenna units and N*N high-frequency array antenna units are arranged on the reflecting surface; and the low-frequency array antenna units and the high-frequency array antenna units are of up-down layered nested structures. The array antenna disclosed by the invention has the advantages of wide frequency band, double frequency bands and high integration; and the directional diagram, the gain and the lobe width of the array antenna are stable. Due to the fact that different array elements are designed in an up-down layered nesting mode, the structure of the array antenna is compact, and the size and profile of the array antenna are greatly reduced.

The invention discloses a metasurface-based heterogeneous integrated terahertz front end and a manufacturing method thereof. The metasurface-based heterogeneous integrated terahertz front end comprises a shell; a fourth cover plate of an n-shaped structure is arranged at the top of the shell; a cavity is formed by the fourth cover plate and the shell; a metasurface and a reflecting face are arranged in the cavity; the metasurface is made of an insulating medium material with electromagnetic parameters; a metal film coats the insulating medium material; a terahertz circuit, a power source paneland a control panel are arranged in the shell, wherein the power source panel is connected with the terahertz circuit, the control panel and the metasurface, and the control panel is connected with the terahertz circuit and the metasurface; a feed source is further arranged in the shell; and electromagnetic waves generated by the terahertz circuit can be radiated to the reflecting face through the feed source. Beam scanning is realized without adding an external mechanical device so that the size, weight and cost advantages of the metasurface-based heterogeneous integrated terahertz front endcan be further expanded, and the requirement of engineering application of terahertz front-end products can be met.

The invention discloses a dual polarized metal gradient slot antenna of an L-shaped connector. The dual polarized metal gradient slot antenna comprises a metal antenna oscillator, a metal reflector and an L-shaped connector; the metal antenna oscillator is connected with the metal reflector, the wall penetrating part of the L-shaped connector is embedded into the cavity of one arm of the metal antenna oscillator, and the metal core of the L-shaped connector is in feed connection with the other arm of the metal antenna oscillator; the invention also provides an antenna array and a processing method of the antenna. The dual polarized metal gradient slot antenna of the L-shaped connector, the array antenna and method provided by the invention have the beneficial effects that the two polarization ports of the antenna can be arranged on a straight line that is the same as one polarization direction through adjusting the positions of the two polarization ports of the antenna, the problem ofT / R component installation at the rear end under the condition that the space between the dual polarization antenna units is relatively small is solved, and thus the antenna achieves the impedance bandwidth of 9:1 under the condition that the active standing-wave ratio is less than 3:1, and has extremely high engineer application value.

The invention provides a broadband low-sidelobe luneberg lens antenna based on a gradient refractive index metamaterial, and mainly solves the problems of high processing cost and low accuracy of an existing luneberg lens and the problems of low gain and poor beam scanning effect of a planar lens antenna. The broadband low-sidelobe luneberg lens antenna comprises a metamaterial lens (1) and a feedsource (2), and the feed source is placed on the outer surface of the metamaterial lens. The metamaterial lens is composed of N photonic crystal cells (12) with different effective dielectric constants, wherein the crystal cells are periodically arranged into a sphere in space by taking a lattice constant a as a period, each crystal cell is composed of dielectric cylinders (121) of a diamond structure or a wood block stacking structure, the dielectric cylinders of the adjacent crystal cells are connected with each other, and the dielectric cylinders of the crystal cells are different in radius so as to achieve a required equivalent dielectric constant. The antenna is wide in frequency band, high in gain, low in side lobe, low in cost, convenient to process and manufacture, capable of achieving 360-degree beam scanning and capable of being used for satellite communication, automobile anti-collision radar and microwave remote sensing.

The invention discloses a micro-strip printed ultra-wideband log periodic antenna. The antenna comprises an antenna layer micro-strip plate, a feeder line layer micro-strip plate, a metal reflection plate and a radio frequency connector; a log periodic antenna is printed on the antenna layer micro-strip plate; the antenna layer micro-strip plate is vertically mounted on the metal reflection plate;the feeder line layer micro-strip plate is adhered to one side of the antenna layer micro-strip plate; the log periodic antenna and the feeder line layer micro-strip plate are mounted on the same side; the feeder line layer micro-strip plate is in feed connection with the log periodic antenna; the radio frequency connector is connected with the bottom end of the feeder line layer micro-strip plate; and a feed point is arranged at a near-ground end. The invention further discloses an antenna array. The micro-strip printed ultra-wideband log periodic antenna has the beneficial effects that thefeed point is arranged at the near-ground end of the log periodic antenna, so that the feed problem of the micro-strip printed ultra-wideband log periodic antenna during working at a relatively high frequency is solved; traditional far-ground end feed is converted into near-ground end feed, so that the influence of feeder lines on the log periodic antenna is reduced as much as possible; and the micro-strip printed ultra-wideband log periodic antenna has relatively good electrical performance and radiation performance.