85 results about "Impedance bandwidth" patented technology

The invention provides a wide-angle scanning dual-circularly-polarized phased-array antenna unit, which belongs to the field of dual-circularly-polarized antennas and comprises a first dielectric layer, a second dielectric layer and a third dielectric layer which are sequentially stacked, the antenna radiator is arranged on the side, away from the second dielectric layer, of the first dielectric layer, the antenna radiator comprises four radiation patches, each radiation patch comprises a metal patch and a loading branch knot, and each metal patch is provided with a slotted structure; the first metal ground layer is clamped between the first dielectric layer and the second dielectric layer, and a cross coupling gap and a first coupling gap and a second coupling gap which are perpendicular to each other are formed in the first metal ground layer; the U-shaped feeder line is clamped between the second dielectric layer and the third dielectric layer, and two ends of the U-shaped feeder line are respectively connected with a coaxial feed column penetrating through the third dielectric layer; the second metal ground layer is arranged on the side, away from the second dielectric layer, of the third dielectric layer; an array is also provided; the problem that a traditional circularly polarized antenna is narrow in impedance bandwidth and limited in polarization is solved.

The invention discloses a broadband dual-circularly-polarized low-cost phased-array antenna array element, which comprises an antenna radiation structure and a slot feed structure which are arranged independently from each other, and is characterized in that the antenna radiation structure comprises a parasitic radiation layer, a first dielectric substrate, an excitation radiation layer and a second dielectric substrate which are arranged in a laminated manner; the slot feed structure comprises a slot layer, a third dielectric substrate, a strip-shaped transmission line and a fourth dielectric substrate; the antenna layer structure and the slot feed structure realize electromagnetic coupling transmission through the slot layer; a hollow symmetrical structure is arranged in the middle of the first dielectric substrate, and the hollow part is used as an air medium to reduce dielectric loss; the gap layer is provided with a multidirectional coupling gap structure; the strip-shaped transmission line is provided with at least two feed ports, and dual circularly polarized radiation is formed in the antenna layer structure through excitation of different feed ports. The antenna radiation layer has no metal through hole or blind hole, can be processed in a layered manner, has the advantages of low processing cost and high yield, and ensures impedance bandwidth while realizing dual circular polarization.

The invention discloses a dual-port coaxial feed circular polarization magnetoelectric dipole antenna, and belongs to the technical field of millimeter wave satellite communication antennas. The antenna comprises a first metal patch layer, a dielectric substrate a, a second metal patch layer, a dielectric substrate b and a metal ground which are sequentially stacked from top to bottom, the second metal patch layer comprises four radiation patches which are arranged in a rectangular array, and each radiation patch is composed of a square patch and a circular ring patch at an inner corner; a metal through hole is formed in the dielectric substrate and is connected with the radiation patch and the metal ground, so that a magnetoelectric dipole radiation path is formed; the first metal patch layer is provided with a probe patch a, the center of the second metal patch layer is provided with a probe patch b, and the probe patch a and the probe patch b form two space orthogonal inverted L-shaped feed probes through a short column and a long column respectively; and the inner conductors of the two feed ports are respectively connected with the long columns of the two probes. The antenna has the advantages of wide impedance bandwidth, wide beam coverage, low profile and easy integration, and is suitable for a low-orbit satellite communication terminal.

A dual-resonant antenna device is provided, exhibiting improved impedance bandwidth, cross-polarization, and isolation, and is less susceptible to spurious surface wave excitation. More specifically, at least one antenna element and a resonant structure are provided on a non-conductive substrate, such that at least one continuous conductive sidewall of the resonant structure surrounds the one or more antenna elements, forming a resonant cavity filled with a dielectric material covering the one or more antenna elements. Each antenna element is used to excite a TM mode, while the dielectric material and size of the resonant cavity are selected such that the resonant structure is used to excite a TE mode. In a preferred embodiment, the TM mode is a TM 01 mode, and the TE mode is a TE 111 mode.

This invention relates to a broadband high-gain radar antenna based on a metasurface and its applications, belonging to the field of antenna design. From top to bottom, it consists of a metasurface layer (Rogers RO3003C substrate + periodic ideal electrical conductor rectangular elements), an air cavity, a radiating layer (ideal electrical conductor patch with rectangular slots), a ground plane with rectangular slots, and a feed layer (microstrip line), operating near 12.4 GHz. The metasurface elements are optimized through characteristic mode analysis, the air cavity improves impedance matching, and the microstrip line is fed through the rectangular slots of the ground plane and the slots of the radiating layer. CST simulations show that the antenna has an impedance bandwidth of 1800 MHz in the 11.6–13.4 GHz range, a peak gain of 8.37 dBi, and a radiation efficiency of nearly 100%, making it suitable for millimeter-wave radar and providing new ideas for its miniaturization and high performance.

The application discloses a kind of millimeter wave broadband filtering antennas with wide-angle beam scanning function and array, from top to bottom include broadband radiator, metal ground layer and microstrip line feed layer in sequence, the broadband radiator includes first rectangular patch, second rectangular patch and driving patch;By controlling the size of first metal patch, second metal patch and driving patch, the resonant frequency of broadband radiator is regulated;By adjusting the distance between first rectangular patch, second rectangular patch and driving patch, and the spacing of adjacent first metal patch and adjacent second metal patch, the coupling amount of broadband radiator is regulated, and the bandwidth of broadband radiator is further regulated.The application has simple and compact structure, wide impedance bandwidth, and can cover four millimeter wave frequency bands.

This application discloses a wide-beam cavity antenna element and its phased array antenna. The cavity antenna element includes a first radiating patch, a first dielectric layer, a second radiating patch, an adhesive layer, a second dielectric layer, and a metal ground layer arranged sequentially. The first radiating patch has a first chamfer on each diagonal and a first U-shaped slot in its center. The second radiating patch has a second chamfer on each diagonal and a second U-shaped slot in its center. This application adopts a dual-radiating patch structure, with the first and second radiating patches located in different dielectric layers, effectively expanding the antenna bandwidth and improving radiation efficiency. The double-layer square microstrip patch design is compact and facilitates miniaturization and integration. The first radiating patch incorporates the first chamfer and the first U-shaped slot, while the second radiating patch incorporates the second chamfer and the second U-shaped slot, increasing the current path and transforming the original single resonant point into three resonant points within the frequency band, significantly widening the antenna's impedance bandwidth.

The application discloses a circularly polarized logarithmic-periodic antenna based on rotation of radiating oscillators, and belongs to the technical field of antenna engineering, and aims at solving the problem of how to design a circularly polarized logarithmic-periodic antenna with wide bandwidth, low profile and simple structure. The application forms corresponding circularly polarized characteristics by rotating a plurality of groups of radiating oscillators by a certain angle with parallel assembly lines as the shaft. The antenna only has a plurality of radiating oscillators which change according to the logarithmic-periodic antenna rule, and does not have a main oscillator and a sub-oscillator, so that the structure is simpler and easier to realize. Meanwhile, the circularly polarized effect is formed by rotating the radiating oscillators to a certain phase and the phase difference between the electromagnetic waves of each oscillator and the zero point of the antenna, so that the logarithmic-periodic antenna can obtain good impedance bandwidth and 3dB axial ratio bandwidth in the working frequency band.

The application discloses a kind of super surface circularly polarized antennas, belong to wireless communication technical field, including: super surface, super surface includes a plurality of first super surface units and a plurality of second super surface units arranged in array, first super surface unit is located in the periphery of second super surface unit, and second super surface unit is the symmetrical structure formed by cutting first super surface unit;Dielectric substrate, dielectric substrate includes upper layer dielectric substrate and lower layer dielectric substrate;Driving patch, driving patch is located between upper layer dielectric substrate and lower layer dielectric substrate;Metal floor, metal bottom plate is arranged on the lower surface of lower layer dielectric substrate;Microstrip feed structure, through coupling gap and driving patch non-contact coupling;By unit array optimization, phase difference is generated in orthogonal radiation mode, and circularly polarized radiation is realized.50 ohm microstrip line feeding is used, and non-contact coupling excitation is realized by coupling gap and driving patch;Synergistic design realizes 31.5% impedance bandwidth, 20.4% axial ratio bandwidth, and full coverage WBAN5.15-5.825GHz frequency band.

Wideband antenna elements exhibit strong coupling when formed into an array, which normally degrades the impedance bandwidth, radiation pattern, and efficiency of the feed antennas. Various methods are provided herein to mitigate or reduce this coupling. For example, designing an array such that not all antennas support the lower frequency operation mitigates coupling at low frequencies where coupling is most significant. Alternatively, embedding the feeds into a high-refractive-index medium increases the electrical distance between feeds while the physical separation is kept constant.

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

This invention relates to the field of phased array antenna technology, specifically disclosing a low-profile broadband circularly polarized phased array antenna element, antenna array, and fabrication method. The antenna includes a body and interconnected feed layers disposed at the bottom of the body. The body comprises, from top to bottom, a parasitic patch, a first dielectric layer, a radiating patch, and a second dielectric layer. A metallized via, coaxial with the body and interconnected with the radiating patch, is disposed on the second dielectric layer. The feed layer is interconnected with the metallized via. A U-shaped slot is disposed on the radiating patch. The metallized via is located within the U-shaped region formed by the U-shaped slot. Compared with the traditional eccentric feeding method, this invention reduces the antenna profile height, lowers fabrication costs, broadens the impedance bandwidth and axial ratio bandwidth, and optimizes the antenna's axial ratio performance.

This invention discloses a dual-substrate circularly polarized reconfigurable omnidirectional antenna based on PIN diode control. The antenna comprises a first substrate and a second substrate. The second substrate has a ground plane printed on it, and the first substrate has a radiating patch printed on it. The radiating patch includes a central square patch, a Γ-shaped stub, a loop antenna, PIN diodes, and via shorting posts. Seamless switching between left-hand and right-hand circular polarization is achieved through the on / off combinations of 16 PIN diodes, with a simple switching logic. High polarization purity is achieved in both polarization modes, and the via shorting posts effectively reduce mutual interference between modes, resulting in strong switching reliability. In both circular polarization modes, the relative impedance bandwidth and axial ratio bandwidth are wide. In the left-hand circular polarization mode, the relative impedance bandwidth reaches 19.38%, covering 2.33-2.83GHz with |S11|<-10dB, and the axial ratio bandwidth reaches 26.3%, covering 2.08-2.71GHz with AR<3dB. In the right-hand circular polarization mode, the relative impedance bandwidth reaches 19.8%, covering 2.32-2.83GHz with |S11|<-10dB, and the axial ratio bandwidth reaches 23.43%, covering 2.11-2.67GHz with AR<3dB, which is significantly better than existing narrowband designs of the same type.

The invention provides a broadband wide-axial-ratio circularly polarized antenna based on a tight coupling principle, and relates to the technical field of microstrip antenna structure design, the broadband wide-axial-ratio circularly polarized antenna comprises a first dielectric plate as a substrate, and a feed network capable of realizing one-to-four power division and 90-degree phase shift is printed on the lower bottom surface of the first dielectric plate; a second dielectric plate is arranged above the first dielectric plate in parallel, four arc-shaped metal patches are arranged on the lower bottom surface of the second dielectric plate to form a radiation unit, and the adjacent patches are tightly coupled through an interdigital capacitor; and a strip-shaped microstrip line is arranged on the upper top surface of the second dielectric plate. And the four coaxial feeder lines are vertically connected with the output end of the feed network and each metal patch, so that high-efficiency transmission of signals is realized. The upper surface of the first dielectric plate is provided with an annular metal cavity which is connected with the metal ground and is used for improving the axial ratio at a low elevation angle. According to the invention, wide impedance bandwidth and wide axial ratio bandwidth are realized, and the antenna has wide axial ratio beam width and high radiation efficiency.

The invention provides a broadband wave-transparent base station antenna based on multi-technology mixing, relates to the technical field of microwave and millimeter wave communication, and solves the technical problems that most of staggered base station antenna design schemes in the prior art are relatively narrow in wave-transparent bandwidth, and broadband work is difficult to realize. According to the technical scheme, an L-shaped filtering branch knot is added to an annular dipole arm, and a narrow-band wave-transparent frequency point located near 2.6 GHz is introduced; on the basis, a 2 * 2 patch type frequency selective surface is introduced, and a second wave-transparent frequency point located at 2.18 GHz is introduced; a parasitic band is added, and a third wave-transparent frequency point located at 1.8 GHz is introduced; according to the broadband low-frequency antenna, the wave-transparent effect in the broadband band of 1.7 GHz to 2.7 GHz is achieved, meanwhile, the-15 dB broadband impedance bandwidth of the low-frequency antenna itself in the range of 690 MHz to 960 MHz is kept, and the three wave-transparent structures are mutually independent, do not interfere with one another and are convenient to regulate and control.

This invention discloses a circularly polarized scanning grating array based on a broadband 90° balun, belonging to the field of microwave antenna technology. The array consists of a grating array of circularly polarized antenna elements. Each circularly polarized antenna element includes, from top to bottom, a radiating patch layer, a first dielectric substrate, an air gap layer, a metal ground layer, a second dielectric substrate, and a feed network layer. This circularly polarized antenna element uses a rotated microstrip patch as the radiator and employs a metal back cavity to achieve stable unidirectional radiation. This structure effectively reduces coupling between elements after antenna array assembly. The lower-layer feed network uses a 180° power divider phase shifter combined with an ultra-wideband phase shifter, which can greatly achieve broadband phase shifting, thereby widening the impedance bandwidth and axial ratio bandwidth of the circularly polarized antenna.

The utility model discloses a millimeter wave antenna coupling slot structure with wide impedance bandwidth, which comprises a coupling slot arranged on the surface of a radiation patch, telescopic pieces used for changing the effective area of the coupling slot are arranged on the inner walls of the two sides of the coupling slot, and an antenna base is connected below the radiation patch through an adjustable assembly. Through the arrangement of the adjustable assembly and the telescopic pieces, the adjustable assembly can flexibly adjust the height of the radiation patch, so that the performance parameters of the antenna can be optimized, different working environments and application requirements can be met, meanwhile, the effective area of the coupling gap can be changed through the coupling gap and the telescopic pieces on the inner walls of the two sides, and the antenna is more compact. Therefore, the impedance matching and radiation characteristics of the antenna are adjusted, and the working efficiency and bandwidth of the antenna are improved.

A dual-polarized or circularly polarized microstrip antenna employs a multi-layer stacked structure, comprising a feed layer, an upper dielectric substrate, a radiating layer, a prepreg layer, a lower dielectric substrate, and a ground layer connected sequentially from top to bottom. The upper dielectric substrate, radiating layer, prepreg layer, lower dielectric substrate, and ground layer are all square structures with chamfered corners. Rectangular slots are formed at the center edges of the four sides of the squares in the upper dielectric substrate, radiating layer, and prepreg layer. This invention introduces differential feeding, forming a ring structure with openings in the radiating layer and slots along ±45° directions. Radiation through these slots excites higher-order modes, resulting in higher gain. This antenna has a simple structure, is easy to manufacture, and offers significantly improved performance. It exhibits good impedance and gain bandwidth within the operating frequency band, low sidelobes, strong directivity, and high polarization purity. Furthermore, depending on the power divider applied, it can achieve either dual-polarized or circularly polarized operating modes.

An antenna radiation arm, an antenna radiation unit and a multi-frequency array antenna, each pair of dipoles of the antenna radiation unit comprises two oppositely arranged antenna radiation arms, the antenna radiation arms have a ring-shaped conductive structure, and an inductive circuit structure is arranged on the conductive structure to extend the electrical length of the conductive structure, which realizes the miniaturization of the physical size on the one hand, and enables the antenna to pass through the first frequency band signal and filter out the second frequency band signal on the other hand, reduces the mutual coupling between the array elements in the design environment with limited array height and space, and reduces the influence of the low-frequency antenna on the high-frequency antenna radiation performance. The antenna radiation arm comprises a driving arm and a parasitic arm, the driving arm is connected to a feed balun and has two radiation branches; the two ends of the parasitic arm are opposite to the two radiation branches of the driving arm, and enclose the ring-shaped conductive structure; the two radiation branches of the driving arm are coupled to the two ends of the parasitic arm through a capacitive structure, and form a resonance to the first frequency band signal, thereby widening the impedance bandwidth.

The application relates to the technical field of ground penetrating radar antennas, and discloses an ultra-wideband high-gain Vivaldi antenna loaded with wave-absorbing materials, which comprises a dielectric substrate with a feeding end and a radiating end arranged oppositely and comprising a first plate surface and a second plate surface arranged oppositely; an antenna radiator arranged on the first plate surface and having two radiation arms, the two radiation arms each having a first radiation arm surface facing each other, the two first radiation arm surfaces extending in a direction away from each other from the feeding end to the radiating end so that a gradually expanding groove is formed between the two first radiation arm surfaces; a circular matching groove is arranged on the antenna radiator and close to the feeding end; a wave-absorbing module is arranged on each side end of the two radiation arms away from each other; a metal director is arranged on the first plate surface and located at the radiating end; a reflector is internally provided with a reflection cavity, at least part of the feeding end is inserted into the reflection cavity, and a spacing is formed between the feeding end and the side wall of the reflection cavity. The Vivaldi antenna can alleviate the defects of low gain at low frequency, insufficient impedance bandwidth and low front-to-back ratio of the conventional Vivaldi antenna.

The invention provides a decoupling structure of a millimeter wave circularly polarized antenna array and wireless communication equipment, the decoupling structure is used for carrying out resonance decoupling on the millimeter wave circularly polarized antenna array, and the decoupling structure is provided with an upper decoupling dielectric substrate and a lower decoupling dielectric substrate from top to bottom in sequence, an upper-layer metal decoupling structure is arranged on the upper end face of the upper-layer decoupling dielectric substrate, a lower-layer metal decoupling structure is arranged on the upper end face of the lower-layer decoupling dielectric substrate, and the upper-layer metal decoupling structure comprises a transverse trunk and a plurality of longitudinal branch strips; the lower-layer metal decoupling structure comprises a plurality of longitudinal metal branch strips, and the lengths of the transverse trunk, the longitudinal branch strips and the longitudinal metal branch strips are gradually reduced in sequence; millimeter wave circularly polarized antenna arrays are arranged at the bottom of a lower decoupling dielectric substrate of the decoupling structure at intervals to form wireless communication equipment. According to the resonance decoupling structure, while mutual coupling of ports between the antenna units is suppressed, the impedance bandwidth and the bandwidth expansion are realized.

The invention discloses a low-profile broadband circularly polarized array antenna based on traveling wave slot coupling feeding. The array adopts a multi-layer structure and comprises a feed microstrip line layer, a first dielectric substrate, a metal plate with a cross recess, second to fifth dielectric substrate layers, a first metal sheet layer and a second metal sheet layer from top to bottom. The feed network realizes energy equal-amplitude in-phase and unequal-phase transmission through the first-stage T-shaped microstrip line and the second-stage unequal-length T-shaped microstrip line. The cross recess on the metal plate and the metalized through hole in the dielectric substrate work cooperatively to guide electromagnetic waves to radiate upwards and suppress transverse loss. The multiple layers of dielectric plates and the metal sheets are mixed and stacked and are arranged in a sequential rotation mode, so that the impedance bandwidth and the axial ratio bandwidth are effectively widened, and the antenna gain is improved. The antenna realizes the characteristics of high gain, wide bandwidth and low profile of 0.056 working wavelength under the center frequency of 7GHz.

The invention discloses a millimeter wave miniaturized dual-frequency dual-polarization filtering antenna. The antenna comprises a miniaturized SIW resonant cavity and two strip-shaped parasitic patches. The dual-frequency work is realized by simultaneously exciting a TE110 mode and a TE210 mode of the SIW resonant cavity, and a half-mode structure and a meandering flow technology are adopted, so that the antenna size is effectively reduced, and the miniaturization design is realized. The four radiation zero points are introduced to the two sides of the passband by using electromagnetic hybrid coupling between the cavities and a cross coupling mechanism between the patch and the cavities, so that the antenna has excellent frequency selectivity under the condition that an independent filter circuit is not added. The antenna is compact in structure and high in integration level, has the characteristics of wide impedance bandwidth, high out-of-band rejection, miniaturization, simple feed structure and dual-frequency and dual-polarization, and is suitable for a millimeter wave integrated wireless system with strict requirements on size and performance.

The application discloses an antenna unit based on a stepped metasurface, which comprises a first metal plate, a lower dielectric substrate, a second metal plate and an upper dielectric substrate which are sequentially stacked; a substrate integrated waveguide feed line is arranged between the first metal plate and the second metal plate; the metal plate is etched with a feed gap; the upper dielectric substrate is provided with a single-sided stepped metasurface structure or a double-sided stepped metasurface structure; the feed gap is excited by the substrate integrated waveguide feed line, and then the single-sided stepped metasurface structure or the double-sided stepped metasurface structure on the upper side is excited to generate linearly polarized radiation; the beam deflection and wide beam performance are realized while a relatively wide impedance bandwidth is ensured.

The application provides a novel ultra-wideband low-profile microstrip array antenna based on a gradient slot coupling, and relates to the technical field of antenna engineering. The novel ultra-wideband low-profile microstrip array antenna based on the gradient slot coupling comprises a ground plate, a lower dielectric, a gradient feed line, an upper dielectric and a radiation unit. The ground plate is provided with a gradient slot. The lower dielectric is arranged on one side of the ground plate. The gradient feed line is arranged on the side of the lower dielectric away from the ground plate. The upper dielectric is arranged on the side of the ground plate provided with the gradient slot. The radiation unit is arranged on the side of the upper dielectric away from the ground plate. In the application, the grid radiation unit is matched with the gradient slot coupling structure to reduce the circuit Q value and realize continuous impedance transformation. The impedance bandwidth is significantly widened while the low profile and miniaturization are maintained. The units are periodically arranged to form a surface array, the high gain and anti-interference requirements are met, and the application range of the antenna is effectively expanded.

The dual-polarization broadband bending dipole radiator comprises four metal dipole arms, the four metal dipole arms are distributed in a central symmetry mode, a coaxial cable outer core is connected to the lower portion of each metal dipole arm, and a coaxial cable outer core is connected to the lower portion of each metal dipole arm. A coaxial cable inner core is arranged in two adjacent coaxial cable outer cores; a butterfly-shaped hollow groove is formed in the inner side of each metal dipole arm, a capacitive load is arranged in each butterfly-shaped hollow groove, and a bending load which is bent downwards is arranged at the tail end of each metal dipole arm; one end of the first metal load is connected with the top end of one coaxial cable inner core, and the other end is connected with the coaxial cable outer core opposite to the first metal load; one end of the second metal load is connected with the top end of the other coaxial cable inner core, and the other end is connected with the coaxial cable outer core. Therefore, wide impedance bandwidth and high and stable gain performance are realized.

Disclosed is an ultra-wideband H-plane waveguide T-junction power divider, comprising an input rectangular waveguide, a matched rectangular waveguide, a matching post, a rectangular septum, two output rectangular waveguides, and two tuning cavities; a center line of the matching post coincides with a center line where a vertical cross section and a longitudinal cross section of the output rectangular waveguides intersect, and a bottom surface of the matching post is flush with a bottom surface of the output rectangular waveguides; the rectangular septum is located on a side opposite the input rectangular waveguide and is inserted in a direction from the top toward the input rectangular waveguide; the two tuning cavities are located on the side opposite the input rectangular waveguide and are respectively arranged on either side of the rectangular septum. The described structure allows for a very simple and compact power divider structure that is easy to fabricate. Moreover, in a frequency band of 4.44 GHz-8.71 GHz, an impedance bandwidth of an input port of the power divider, defined by S11≤ -20 dB, is greater than 64.9%, and two signals output by the power divider exhibit good amplitude and phase consistency within the aforementioned frequency band, thereby resulting in good potential for wide application.

The application discloses a broadband dual-polarized magnetoelectric dipole antenna, which comprises a first dielectric layer and a second dielectric layer arranged below the first dielectric layer, the first dielectric layer and the second dielectric layer are connected through an adhesive layer to serve as an antenna base supporting a magnetoelectric dipole unit, the magnetoelectric dipole unit comprises metal patches and a magnetic dipole column serving as electric dipoles and magnetic dipoles, the magnetic dipole column is arranged below the second dielectric layer through the first dielectric layer, the metal patches are arranged in four and in a ring shape on the upper side of the first dielectric layer, the shape of the metal patches is a rectangle with half-elliptical cut corners arranged on both sides of the outer edge, and any one of the metal patches is coupled with two gain patches arranged on the first dielectric layer, and the gain patches are circular. The application solves the problem of poor impedance bandwidth capacity of the magnetoelectric dipole antenna in the prior art, thereby meeting the demand of people for network information transmission speed.

The application discloses a miniaturized metasurface antenna, which comprises three layers, namely a radiation layer, an air layer and a feed layer from top to bottom, wherein the radiation layer is provided with a metasurface radiation structure, and the feed layer is a microstrip line slot coupling feed structure; the metasurface radiation structure is composed of 16 square patches arranged in a 4*4 array, wherein a rectangular slot is loaded at the center of each square patch, and a branch is loaded at four corners; the metasurface radiation structure adjusts the equivalent capacitance of the metasurface antenna by changing the length and width of the loaded branch extending into the square patch; and the length of the current of the metasurface antenna is adjusted by changing the length and width of the rectangular slot. Compared with the existing conventional metasurface antenna, the metasurface antenna has the advantages of ensuring a wide impedance bandwidth and high gain of the metasurface antenna in the process of miniaturization.