113 results about "Antenna miniaturization" patented technology

The invention relates to a Ka-band dual-frequency dual-polarization common-caliber millimeter wave antenna system which comprises an antenna unit. The antenna unit comprises a metal floor, a first dielectric layer, a second dielectric layer, a third dielectric layer, a first radiation unit, a first feed patch, a fourth dielectric layer, a fifth dielectric layer, a second radiation unit and a second feed patch which are sequentially stacked from bottom to top, and the first radiation unit and the first feed patch are located on the same layer. The second radiation unit and the second feed patch are located on the same layer; the first feed patch and the second feed patch are different in shape and size. According to the Ka-band dual-frequency dual-polarization common-caliber millimeter wave antenna system, the antennas working in different frequency bands are highly concentrated in a physical space, the problem of serious mutual coupling between the antennas in a compact space is solved, antenna miniaturization is achieved, meanwhile, signal loss is reduced, and therefore the applicability of the antennas is improved.

The utility model discloses a balun-integrated full-wave oscillator radiation unit, and aims to solve the problems that a low-frequency bowl-shaped oscillator and a high-frequency die-cast half-wave oscillator are used in the conventional high-low frequency nesting scheme, so that the requirements of miniaturization and light weight of an antenna are difficult to meet, the processing cost is extremely high, and the cost is low. And meanwhile, the high-frequency oscillator is arranged in the bowl-shaped oscillator, so that the horizontal plane wave width deformation of the high-frequency oscillator is caused, the gain is influenced, and the market demand cannot be met. The Balun-integrated full-wave oscillator radiation unit comprises a fixed support and a PCB radiation plate installed on the fixed support. The structure of the full-wave oscillator is relatively simple, assembly can be completed only by installing the single-balun integrated feed sheet in the fixing support and welding and fixing the single-balun integrated feed sheet and the PCB radiation plate, miniaturization design can be achieved through the microstrip technology, the printed circuit technology and the like due to the fact that single-face embedded coupling is adopted, the requirement of miniaturization equipment is met, machining is easy, and cost is low. The production efficiency can be greatly improved, and the production cost is reduced.

The invention discloses a single-layer wide-beam sky-pass antenna, and the antenna comprises a polygonal geometric body, and the upper surface of the polygonal geometric body is provided with a plane. The single-layer dielectric substrate is located on the plane of the polygonal geometry, and the single-layer dielectric substrate is fixedly connected to the polygonal geometry; an annular radiation patch is attached to the central position of the upper surface of the single-layer dielectric substrate, a plurality of feeding points are arranged on the annular radiation patch, each feeding point is connected with a feeding branch knot, and each feeding branch knot is connected with a lead; wherein a claw-type coupling patch is attached to each corner of the polygonal geometry. According to the invention, on the premise that the miniaturization and the structure simplification of the antenna are maintained, the wide wave beam, the high bandwidth and the high reliability are realized.

The invention relates to the technical field of communication, and provides a miniaturized indoor distribution antenna. The miniaturized indoor distribution antenna comprises a grounding plate, a high dielectric constant medium, a radiation patch and a coupling patch which are stacked in sequence. The coupling patch comprises a first coupling patch and a second coupling patch, the center of the first coupling patch corresponds to the center of the radiation patch, and the second coupling patch and the first coupling patch are arranged at an interval. One end of the first probe is connected with the first feed port, and the other end of the first probe sequentially penetrates through the grounding plate, the high-dielectric-constant medium and the radiation patch to be electrically contacted with the first coupling patch; and one end of the second probe is connected with the second feed port, and the other end of the second probe sequentially penetrates through the grounding plate, the high-dielectric-constant medium and the radiation patch to be electrically contacted with the second coupling patch. The miniaturized indoor distribution antenna can realize directional and omnidirectional radiation switching in a broadband range, has the advantages of miniaturization, broadband and easiness in processing and integration, and can be used for various communication application scenes.

The invention discloses a circularly polarized array antenna and electronic equipment. The circularly polarized array antenna comprises a feed network layer, a signal radiation layer and a reflection metal layer. The feed network layer is used for generating a radiation signal based on an input signal. The signal radiation layer is connected with the feed network layer, and the signal radiation layer is used for transmitting radiation signals. The reflection metal layer is arranged between the feed network layer and the signal radiation layer, and the reflection metal layer is used for reflecting radiation signals radiated towards the feed network layer. The feed network layer and the signal radiation layer are separated and located in different layers through the reflection metal layer, the axial ratio bandwidth and the circular polarization gain of the circular polarization array antenna can be improved under the condition that the thickness of the circular polarization array antenna is reduced, the impedance bandwidth is improved, and the antenna performance is improved. The problem that miniaturization low profile, broadband and high gain of the existing circularly polarized array antenna cannot be considered at the same time is solved.

This application provides an antenna decoupling structure, a MIMO antenna, and a terminal. The antenna decoupling structure includes a grounding stub and a capacitor structure, where a first end of the grounding stub is connected to an antenna floor, to form an equivalent inductor; and a first end of the capacitor structure is connected to the antenna floor, and a second end of the capacitor structure is connected to a second end of the grounding stub, so that the equivalent inductor and the capacitor structure form an LC resonant structure, where a parameter corresponding to the LC resonant structure meets a decoupling requirement for at least one target decoupling frequency band. Because the resonant frequency depends on the inductance and the capacitance that correspond to the LC resonant structure, antenna miniaturization can be realized by reducing a size of each portion of the decoupling structure.

The invention provides a self-biased very-low-frequency mechanical transmitting antenna driven by piezoelectricity and a preparation method of the self-biased very-low-frequency mechanical transmitting antenna. The preparation method comprises the following steps: step 1, preparing a piezoelectric ceramic material; step 2, cutting and slotting; thirdly, resin is poured; step 4, cutting the layer sheets; step 5, packaging; step 6, polarization treatment; step 7, preparing a bonding layer; and 8, hot-pressing and compounding. Compared with an existing magnetoelectric antenna, the self-biased very-low-frequency mechanical transmitting antenna has the advantages of being self-biased, high in piezoelectric property, miniaturized, free of extra noise sources and electromagnetic interference and the like, has the advantages of being high in stress transmission efficiency, small in ohmic loss and the like, can meet the requirement for miniaturization of the magnetoelectric mechanical antenna, is easy to form a large-scale array, and is suitable for large-scale popularization and application. The magnetic emission performance under zero bias is improved, and the low-frequency communication effect is achieved.

The invention discloses a folding transmission array antenna, a communication module and electronic equipment, and belongs to the technical field of antennae, the antenna comprises a transmission surface, a reflection polarization conversion surface, a feed source and a plurality of support pillars, the transmission surface is provided with a plurality of transmission array units, the reflection polarization conversion surface is provided with a plurality of reflection polarization conversion metasurface units, and the support pillars are arranged on the transmission array units. The reflective polarization conversion metasurface unit is made of a near-zero refractive index metamaterial; the transmission array unit is composed of a first dielectric plate, a second dielectric plate, a first metal layer, a second metal layer and a third metal layer; the reflection polarization conversion metasurface unit comprises a third dielectric plate and a metal plate, and a fourth metal layer and a fifth metal layer are arranged on the two faces of the third dielectric plate respectively; the communication module adopts the antenna; the electronic equipment adopts the antenna. The antenna profile is further compressed under the condition that the geometric position of the feed source is not changed, meanwhile, feed source blocking is avoided, high gain can be kept in a specific frequency band, and the dual requirements of a modern communication system for antenna miniaturization and high performance are met.

The invention relates to an antenna assembly and a vehicle. The antenna assembly comprises a dielectric body, a first antenna structure, a second antenna structure and a metal frame body. The projections of the plurality of second antenna structures on the dielectric body along the thickness direction of the dielectric body are arranged around the circumferential direction of the first antenna structure, the plurality of second antenna structures are rotationally symmetrical about the center of the first antenna structure, and each second antenna structure is coupled with the first antenna structure. The metal frame body is arranged around the periphery of the first antenna structure, and the metal frame body is connected with the dielectric body. The low-profile antenna structure is realized, the influence caused by the surface wave effect of the dielectric body is improved, the mutual coupling interference between double frequencies is reduced, and the antenna gain and the antenna bandwidth are improved. Besides, the metal frame body can restrain back lobe level energy, capacitance coupling is formed between the first antenna structure and the metal frame body, capacitance coupling is formed between the second antenna structure and the metal frame body, the antenna miniaturization design is further achieved, the overall size is reduced, and the installation space can be prevented from being limited.

The present invention discloses a miniaturized transceiver integrated antenna in the field of antennas and its application. The antenna includes three layers of printed circuit boards. A hollow structure is provided in the middle of the first layer of printed circuit boards. Transmitting radiation patches and receiving radiation patches are provided at opposite ends of the hollow structure, respectively. A number of metallized vias and blind holes are provided around the radiation patches. The lower surfaces of the second layer of printed circuit boards and the third layer of printed circuit boards are provided with metal grounds, and the metal grounds on the lower surface of the second layer of printed circuit boards serve as the grounding surface of the antenna, and a cavity-like body is formed between the two metal grounds. The antenna adopts a structure combining metallized vias and blind holes, which helps to miniaturize the antenna. The hollow structure of the printed circuit board, the special distribution of metallized vias and blind holes, and the principle of energy cancellation between metal ground layers help to improve the isolation of the antenna. The above design can achieve antenna miniaturization, high isolation, transceiver integration and other performances, so that the antenna can be applied to miniaturized transceiver integrated microsystems.

The invention relates to a miniaturized Vivaldi antenna, in particular to an ultra-wideband miniaturized Vivaldi antenna. The invention aims to solve the problems that the miniaturization of the antenna cannot be realized fundamentally by using a high-dielectric-constant dielectric substrate, the antenna depends on the property of the dielectric substrate, and the radiation performance of the antenna is influenced by the dispersion effect in a millimeter wave frequency band. The antenna comprises a feed structure and two radiation structures. The two radiation structures are arranged in a herringbone shape, the feed structure is horizontally arranged on the lower portions of the two radiation structures, and the two ends of the feed structure are connected with the lower portions of the two radiation structures in an inserted mode respectively. The invention belongs to the technical field of communication.

The invention relates to the technical field of mobile communication antennas, and discloses a phase shifter cavity structure which comprises two cavities which are integrally extruded, formed and laminated, power division networks and phase shifting media are arranged in the two cavities, and the two laminated cavities are arranged in a staggered mode. The power division networks and the phase shifting media arranged in the two cavities are correspondingly arranged in a staggered manner; lateral outgoing of the connecting cable can be realized, so that the phase shifter can be arranged on a wide side surface, namely the top wall is vertical to the reflecting plate during antenna layout, and interference is not easy to occur during miniaturized layout of a multi-frequency antenna.

The present disclosure relates to an antenna assembly and an electronic device, the antenna assembly comprising: a first antenna stub, the first antenna stub comprising a first feed point and a second feed point; the first feed point is used for connecting a first feed source to excite the first antenna branch to transmit and receive a first GPS frequency band signal and a first wifi frequency band signal; and the second feed point is used for connecting a second feed source to excite the first antenna branch to transmit and receive a second GPS frequency band signal and a second wifi frequency band signal. According to the embodiment of the invention, the first GPS frequency band signal and the first wifi frequency band signal as well as the second GPS frequency band signal and the second wifi frequency band signal are combined in the first antenna branch, multi-frequency-band fusion is realized in the same antenna branch, and antenna miniaturization and multi-frequency-band design are realized.

The utility model relates to a miniaturized, light, portable and motorized structural design of an outdoor antenna and a use method thereof. When the antenna is used, the reflecting plate is automatically unfolded through the spring hinge to enter a working state, the reflecting plate is folded, so that the antenna is miniaturized, the antenna is convenient to carry and transport, the antenna is suitable for a severe field environment and can be quickly erected, and the workload of a user is greatly reduced; the reflecting plates are rebounded to an unfolded working state through the spring hinges in an unconstrained state, so that signal radiation of the antenna is ensured, the antenna can be quickly erected through the antenna suspension part when the antenna suspension part is used for erecting the antenna, and when the antenna needs to be folded to enter a transportation and storage state, only the reflecting plates on the two sides need to be closed, and the antenna can be quickly erected through the antenna suspension part. Therefore, the folded reflecting plate enables the appearance size of the antenna to be reduced, thereby facilitating the transportation, and further improving the use convenience of the antenna.

This invention relates to the field of antenna technology, and particularly to a miniaturized circularly polarized antenna with a wide axial ratio and wide beamwidth. The antenna includes a dielectric substrate, a circular radiating patch unit, metal shorting posts, a coaxial differential feed structure, and a metal ground plane. The circular radiating patch unit consists of a pair of orthogonal fan-shaped cross-printed dipoles. A slot structure is added in the middle along the X-axis to divide the radiator into left and right parts, and three metal shorting posts are added to the end of each fan-shaped cross-printed dipole structure. The feed structure is a differential-feed coaxial cable, with its inner and outer conductors contacting the left and right halves of the circular radiating patch unit, respectively. Simultaneously, due to the slight difference in curvature between the two orthogonal fan-shaped printed dipoles, a phase difference is formed between the pair of orthogonal modes of the circular radiating patch unit, ultimately achieving circularly polarized radiation of the antenna. A metal short-circuit post is applied to the electric field zero of a conventional printed dipole, forming a new half-mode operating mode at low frequencies. Simultaneously, the slot structure improves the impedance characteristics of the half-mode, enabling antenna miniaturization. Due to the radiation contribution of the metal short-circuit post in the horizontal direction, the axial ratio beamwidth of this circularly polarized antenna is significantly extended. This application exhibits excellent forward radiation characteristics, along with miniaturization, a wide axial ratio beamwidth, simple structure, low cost, and ease of fabrication.

The embodiment of the present application provides a high-gain multi-frequency miniaturized omnidirectional antenna, comprising: a PCB board, a ground-feeding antenna trace, a feed surface antenna trace and a feed line; the ground-feeding antenna trace and the feed surface antenna trace are respectively arranged on two sides of the PCB board, and the ground-feeding antenna trace and the feed surface antenna trace each include N antenna units, wherein N is greater than or equal to 1; each of the antenna units includes a multi-frequency dipole arm, and the multi-frequency dipole arm includes a plurality of pairs of dipole arms, and part of the dipole arms of each antenna unit are arranged on the reverse side of the PCB board surface where the antenna unit is located, and are symmetrical with the dipole arm structure of the same frequency located on the PCB board surface where the antenna unit is located; the feed line is electrically connected to the ground-feeding antenna trace and the feed surface antenna trace, respectively. The antenna provided by the embodiment of the present application improves the gain effect of the multi-frequency antenna while meeting the miniaturization of the antenna, and ensures that the antenna has good omnidirectional characteristics.

The invention relates to the technical field of antennas, and discloses an antenna structure, a generation method thereof, a radio frequency device and equipment. The antenna structure comprises a dielectric substrate which comprises a first surface and a second surface opposite to the first surface; the first surface comprises ground; the second surface comprises a radiation patch; the feeder line is used for feeding power to the radiation patch; wherein the radiation patch comprises at least one grounding area, and the radiation patch adjusts the electromagnetic field distribution on the surface of the radiation patch through the grounding area. According to the antenna, through arrangement of the grounding area and adjustment of electromagnetic field distribution on the surface of the radiation patch, adjustment of a directional diagram is achieved, the radiation effect of the antenna is improved, the antenna structure is simple, design and deployment implementation difficulty is low, and miniaturization of the antenna size is facilitated.

The application relates to a single-layer multi-frequency GNSS antenna, which comprises a patch antenna body, the patch antenna body comprises a dielectric substrate and a ground plane, the center of the upper surface of the dielectric substrate is provided with a clover-shaped high-frequency radiation metal plate, the periphery of the high-frequency radiation metal plate is provided with a low-frequency radiation metal plate, a first non-metal gap is arranged between the high-frequency radiation metal plate and the low-frequency radiation metal plate, four edges of the low-frequency radiation metal plate are provided with accommodation grooves, long-strip-shaped radiation metal patches are arranged in the accommodation grooves, and rectifier radiation parts are arranged between four corners of the low-frequency radiation metal plate and adjacent two accommodation grooves, and the four rectifier radiation parts correspond to four sharp corners of the clover-shaped high-frequency radiation metal plate. The application belongs to the technical field of antennas, the radiation performance of the antenna is optimized through a special geometric layout, the foundation of antenna miniaturization and low cost is laid, and the dual-band coverage and good radiation characteristics are preliminarily ensured.

The application provides a piezoelectric driving self-biased very low frequency mechanical transmitting antenna and a preparation method thereof. The preparation method comprises the following steps: step one, preparing piezoelectric ceramic material; step two, cutting and slotting; step three, pouring resin; step four, cutting layer sheet; step five, packaging; step six, polarization treatment; step seven, preparing adhesive layer; and step eight, hot-pressing compounding. Compared with the existing magnetoelectric antenna, the self-biased very low frequency mechanical transmitting antenna has the characteristics of self-bias, high piezoelectricity, miniaturization, no additional noise source and electromagnetic interference, and the like, has the advantages of high stress transmission efficiency and small ohmic loss, can realize the miniaturization requirement of the magnetoelectric mechanical antenna, is easy to form a large-scale array, improves the magnetic transmitting performance under zero bias, and achieves the low frequency communication effect.

A low-loss hexagonal ferrite material in S and C bands and its preparation method, belonging to the technical field of ferrite material preparation. The hexagonal ferrite material includes a main phase and an additive. The main phase is Ba5Cu 2‑x Ni x Ti3Fe 12 O 31 , where x = 0.5 to 1, and the additive is SiO2; the additive accounts for 0.5 to 1.5 wt% of the mass of the main phase; by changing the ratios of Cu 2+ , Ni 2+ , the magnetocrystalline anisotropy, magnetic permeability and natural resonance frequency are regulated, and the real part of the magnetic permeability μ' ≥ 1.8, the magnetic loss tangent tanδ m ≤ 0.08, the real part of the dielectric constant ε' ≥ 10, and the dielectric loss tangent tanδ d ≤ 0.01 are achieved in the S and C bands. It can be used for the miniaturization of Sub-6GHz antennas, improving the antenna bandwidth and reducing the impedance mismatch.

The invention provides a low-profile miniaturized dual-band antenna based on LC resonance loading, and relates to the technical field of microstrip antenna structure design, the low-profile miniaturized dual-band antenna comprises a metal floor, a dielectric plate, a radiation structure, an LC resonance structure and a feed structure, the dielectric plate is fixedly arranged right above the metal floor; the radiation structure is arranged right above the dielectric plate, the radiation structure is composed of a plurality of coaxial metal circular patches, and a plurality of through holes are formed in the radiation structure; the LC resonance structure is arranged in the through hole of the radiation structure; the feed structure is arranged on the center line of the radiation structure, and the top end of the feed structure passes through the dielectric plate and is connected with the radiation structure. The problems of miniaturization and low profile of a traditional low-frequency antenna are solved, the size is remarkably reduced, and meanwhile the dual-band working capacity and good radiation performance are maintained.

The invention discloses a multi-cross-slot coupled feed OAM antenna based on a dielectric resonator, and the antenna comprises four parts: the dielectric resonator, a reflection plate, a dielectric substrate, and a feed network which are stacked together from top to bottom. The dielectric resonator is integrally cylindrical, a cylindrical counter bore structure is arranged in the center of the interior of a cylindrical main body, and a cross recess structure extends to the periphery by taking a cylindrical counter bore as the center; and the surface of the reflecting plate is rotationally and periodically provided with etched cross-shaped grooves. Vortex waves are generated by combining the single-dielectric resonator with multi-cross-slot coupling feeding, the feed network generates excitation phase difference by using different structures, and meanwhile, distribution of current on the surface of the antenna can be changed by combining the cross slots, so that miniaturization design of the antenna is facilitated.

The application relates to the technical field of communication devices, and provides a phase shifter and a base station antenna. The phase shifter comprises a substrate, a rotating piece and a driving assembly. The rotating piece is arranged to rotate on the substrate. The side of the rotating piece facing the substrate is provided with a coupling line. The side of the substrate facing the coupling line is provided with an input line and an output line. The coupling line is coupled and connected with the input line and the output line. The driving assembly is in transmission connection with the rotating piece. Under the driving of the driving assembly, the rotating piece rotates relative to the substrate, and the length of the transmission line of the phase shifter changes correspondingly. Under the condition that the driving assembly drives the rotating piece to rotate relative to the substrate, the length of the transmission line of the phase shifter can change correspondingly, so that the purpose of phase adjustment is achieved. In addition, the substrate and the rotating piece are arranged in a stacked mode, the structure is simple, the occupied space is small, and the antenna can be designed to be small in size and light in weight.

The invention relates to the technical field of wireless communication, in particular to a miniaturized six-high multi-port base station antenna which comprises a reflecting plate, high-frequency radiation elements and four paths of high-frequency radiation antenna arrays composed of the high-frequency radiation elements, and isolating bars I arranged in the length direction of the arrays are arranged among the four paths of high-frequency radiation antenna arrays. The periphery of each high-frequency radiation element is provided with a second isolation strip, a third isolation strip is arranged between the adjacent high-frequency radiation elements in the same array, the third isolation strip is arranged between the second isolation strips on the periphery of the adjacent high-frequency radiation elements, and the first high-frequency radiation antenna array and the fourth high-frequency radiation antenna array are arranged on the two sides of the reflecting plate. The second high-frequency radiation antenna array and the third high-frequency radiation antenna array are arranged in the middle of the reflecting plate, and the four high-frequency radiation antenna arrays are arranged in a staggered mode. According to the six-high multi-port base station antenna, the requirement of a six-path high-frequency radiation antenna array is met by utilizing the four-path high-frequency radiation antenna array, the size of the antenna is effectively reduced, and the miniaturization of the antenna is realized.

The invention relates to the technical field of antennas, in particular to a miniaturized low-profile circularly polarized microstrip antenna with double axial ratio points. A circular radiation patch unit is adopted, and the circular radiation patch unit comprises a cross dipole, a rectangular feed strip, a fan-shaped NFRP unit and an L-shaped NFRP radiation unit. The cross dipole patch is symmetrical along the X axis on the whole and is formed by crossing a pair of printed dipoles of which the tail ends are of fan-shaped structures, metal short circuit columns are loaded at the tail ends of the fan-shaped structures so as to realize the miniaturization of the antenna size, the coaxial feed structure feeds a rectangular strip extending from the cross dipoles in the + X axis direction, and the Left-hand polarization (LHCP) of the antenna is realized. The NFRP patch comprises a fan-shaped NFRP patch and two L-shaped NFRP patches, the fan-shaped NFRP patch is embedded in the-X axis direction of the crossed dipole, and a new resonance mode is introduced for the antenna so as to generate a second axial ratio point; the two L-shaped NFRP patches are respectively embedded in the-Y-axis direction and the + Y-axis direction of the crossed dipole and are used for reducing the frequency division ratio of two axial ratio points, and at the moment, the axial ratio bandwidth of the original crossed dipole circularly polarized antenna is effectively expanded.

The utility model discloses a calibration network component, a calibration network and an antenna. The calibration network assembly comprises a dielectric plate, and a first power division network group, a second power division network group and a directional coupler which are arranged on the dielectric plate, wherein the first power division network group is arranged on the first surface of the dielectric plate, and the second power division network group and the directional coupler are arranged on the second surface of the dielectric plate; the output end of the first power division network group is connected with the input end of the second power division network group, and the output end of the second power division network group is connected with the directional coupler. The antenna has the technical characteristics of being convenient to produce and assemble, good in component visibility and beneficial to antenna miniaturization.

The invention discloses a miniaturized broadband microstrip antenna, which is suitable for indoor positioning systems such as Bluetooth beacons and the like, and comprises a dielectric substrate, a patch layer arranged on the upper surface of the substrate, and a metal grounding plate positioned on the lower surface of the substrate, the patch layer comprises a radiation patch and a microstrip line connected with the radiation patch; the radiation patch is of a rectangular structure, and the radiation patch is provided with a cross-shaped parting slotting structure. A staggered parallel multi-strip-shaped defected ground structure is introduced to the metal grounding plate, and the staggered parallel multi-strip-shaped defected ground structure is a structure of five rectangular grooves which are arranged in a staggered parallel mode. According to the structure provided by the invention, the miniaturization and broadband performance of the antenna can be considered, and a new technical path is provided for the design of a small wireless terminal antenna.

The utility model provides a high gain antenna, which comprises an antenna body and a metal baffle plate arranged around the antenna body, the antenna body comprises a feed pin, a dielectric substrate and a radiation electrode fixed on the surface of the dielectric substrate, the feed pin is electrically connected with the radiation electrode, and the height H of the metal baffle plate is not greater than the maximum height D of the antenna body. And the minimum distance L1 from the metal baffle plate to the center of the feed needle and the maximum side length L of the dielectric substrate meet the condition that L1 is greater than or equal to 1 / 2 * L. The unique structure that the metal baffle is arranged around the antenna is adopted, the electromagnetic environment around the antenna is effectively changed by means of the reflection, shielding and diversion effects of the metal baffle on electromagnetic waves, and the effect of remarkably improving the antenna gain in a limited space is successfully achieved. The dual requirements of modern electronic equipment for antenna miniaturization and high performance are fully considered, the bottleneck of gain improvement in a limited space in the traditional antenna design is broken through, and powerful support is provided for efficient and stable operation of a satellite navigation system in a complex environment.

The present invention discloses an ultra-wideband (UWB) antenna, which relates to the technical field of antennas. The ultra-wideband (UWB) antenna includes a printed circuit board (PCB). A patch antenna is surface-mounted on the surface of the PCB. The patch antenna includes a dielectric substrate. A first conductor and a coupling portion are disposed on the upper surface of the dielectric substrate. A second conductor and a third conductor are disposed on the surface of the PCB. The first conductor is connected to the second conductor, and the end of the second conductor is connected to the reference ground plane of the PCB. The coupling portion is directly connected to the third conductor. In the patch antenna of the present invention, the dielectric substrate of the patch antenna uses a high dielectric constant material to miniaturize the antenna, which is convenient for integration into wireless devices, facilitating integration by designers and wireless device modules. While miniaturizing, high performance is also achieved, saving space for wireless device manufacturers, providing an antenna solution for the miniaturization of devices, and also saving costs, providing a highly integrated antenna solution for the commercialization of ultra-wideband (UWB) technology.

The invention discloses a miniaturized metasurface broadband wide-angle scanning circularly polarized antenna, and belongs to the technical field of antennas. A wide-angle scanning phased-array antenna can be formed by using the miniaturized metasurface broadband wide-angle scanning circularly polarized antenna as a unit. The miniaturized metasurface broadband wide-angle scanning circularly polarized antenna comprises three layers of dielectric plates, four metal layers and a group of metalized via holes. And by utilizing the non-linear characteristic of a metasurface dispersion curve, the first-order resonant frequency and the second-order resonant frequency are fused to realize broadband radiation. The metasurface antenna is miniaturized by increasing the propagation constant, so that the array element spacing in the array is reduced, and wide-angle scanning is realized. The invention has the characteristics of few layers, small size, large bandwidth, wide-angle scanning and the like.