315 results about "Microstrip antenna" patented technology

The invention provides a frequency, polarization and directional diagram reconfigurable antenna unit and array. The antenna unit comprises a tuning microstrip antenna unit and a reconfigurable feed phase-shift network which are stacked, the tuning microstrip antenna unit comprises a circular radiation patch etched with a circular gap and four variable capacitance diodes bridged on the circular gap; two output ports of a Wilkinson power division network in the reconfigurable feed phase shift network are respectively connected with two feed point micro-strips through PIN diodes, and four feed points form a structure which is in space symmetry and asymmetric in impedance. The circular radiation patch and the annular radiation patch in the antenna unit have continuity in structure, only four variable capacitance diodes are loaded on the annular gap, gain fluctuation is reduced, and the antenna unit is fed through four feed points which are symmetrical in space and asymmetric in impedance, so that the antenna unit is more stable in performance. Good matching can be kept between the feed phase-shifting network and the antenna unit in a broadband range, and the tuning bandwidth of the antenna is widened.

The invention relates to a coaxial microstrip antenna sensor for measuring the water holdup of an oil-water two-phase flow, which comprises an insertion body and an annular microstrip antenna arranged in a pipeline in the insertion body and used for transmitting a microwave signal; the pipeline outer annular microstrip antenna is arranged outside the measuring pipeline and is used for receiving microwave signals; wherein the insertion body is an insulator and is embedded into the center of the measuring pipeline, the axis of the insertion body is coaxial with the measuring pipeline, and a pipeline annular space is formed between the insertion body and the measuring pipeline; the annular microstrip antenna in the pipeline comprises an annular grounding polar plate, an annular radiation polar plate and a coaxial feeder line which are coaxially arranged, the annular grounding polar plate is embedded into the insert body and located on the inner layer, and the annular radiation polar plate is embedded into the insert body and located on the outer layer; the pipeline outer annular microstrip antenna used for receiving microwave signals is coaxially installed on the outer side of the pipe wall and comprises an annular radiation polar plate arranged on the outer wall of the pipeline, an annular shielding layer located on the periphery of the annular radiation polar plate and a coaxial feeder line.

The invention discloses an antenna unit radiator, a circularly polarized phased-array antenna unit and an antenna array, and belongs to the technical field of antennas. The circularly polarized phased-array antenna unit comprises an antenna unit radiator, a first dielectric layer, a metal patch, a second dielectric layer, a third dielectric layer and a metal ground layer which are arranged in sequence; two L-shaped microstrip probes which are orthogonally arranged are laid on the top of the third dielectric layer; the third dielectric layer is internally provided with feed metal columns in one-to-one correspondence with the L-shaped microstrip probes, the top ends of the feed metal columns are connected with the corresponding L-shaped microstrip probes, and the bottom ends of the feed metal columns are provided with feed ports. The antenna array is formed by the antenna unit array. The working bandwidth of the antenna can be expanded, the defect of the narrow-band characteristic of the microstrip antenna is overcome, the degree of freedom of design of the phased-array antenna is improved, impedance matching is facilitated, and the circular polarization performance of the phased-array antenna array is greatly improved.

The invention discloses a broadband miniaturized microstrip antenna applied to wireless terminal equipment, and the structure of the antenna comprises double layers of dielectric substrates, a coupling metal patch layer disposed on the upper surface of the first layer of first dielectric substrate, and a second layer of second dielectric substrate stacked on the first layer of first dielectric substrate. The radiation metal patch layer is arranged on the upper surface of the second dielectric substrate on the second layer and is etched with a U-shaped groove which is nested inside and outside, the grounding metal plate layer is arranged below the air layer on the first layer and is etched with an L-shaped groove, and a feed source point connected to the coupling metal patch layer is arranged on a grounding metal patch. The microstrip antenna provided by the invention is compact in structure and small in size, is easy to be integrated in a small wireless terminal device, can work in two working frequency bands of 2.45 GHz-2. 76 GHz and 3.22 GHz-4. 56 GHz at the same time, and can cover N41 / N77 / N78 and other core communication frequency bands in 5G Sub-6.

The invention provides a low-cost dual-polarization electric scanning base station antenna applied to 5G communication, and provides an effective method for the design of a low-cost electric control scanning base station antenna. According to the invention, an antenna array surface is formed based on 2-bit dual-polarized microstrip antenna units, the antenna array surface and a feed network are in plug-in connection, and the feed phase of each antenna unit is controlled through an external wave control circuit board, so that phased wave beam scanning is realized. The base station antenna has the beneficial effects that compared with a traditional fixed beam base station antenna, the coverage range of the base station antenna can be effectively expanded; according to the invention, the microstrip antenna units are separated from each other and are not printed on a whole dielectric plate, so that the array scale can be flexibly controlled according to actual requirements; the antenna unit integrates two functions of radiation and phase shift, so that an external phase shifter is omitted, and the processing, assembling and maintenance costs are greatly reduced.

A differential feed dual-frequency dual-polarization microstrip filtering antenna comprises three layers of dielectric substrates which are arranged at intervals from top to bottom, and an octagonal annular coupling parasitic structure is loaded on the lower surface of the first layer of dielectric substrate; a rectangular radiation patch is printed on the upper surface of the second dielectric substrate and is loaded with four non-closed rectangular gaps which are distributed in a square shape and are mutually rotationally symmetrical. A cross-shaped parasitic branch knot and four L-shaped symmetrical open-circuit branch knots which are distributed in a rhombus shape and extend outwards along the diagonal direction of the rhombus are printed on the lower surface of the second dielectric substrate layer; the lower surface of the third dielectric substrate is a metal floor; the second layer of dielectric substrate and the third layer of dielectric substrate are connected through a coaxial feeder line; according to the dual-frequency dual-polarization filtering antenna, the mode of combining the differential feed technology and the microstrip antenna is adopted, the design of the dual-frequency dual-polarization filtering antenna with four radiation zero points is achieved, the antenna has good edge selectivity and good out-of-band rejection capacity, in-band gain is stable, and a directional diagram has good symmetry and directionality.

The invention relates to the technical field of power grid measurement, in particular to a miniaturized wireless self-powered alternating current electric field measurement method and system. Comprising the following steps: acquiring radio frequency energy in an electric field environment, and converting the radio frequency energy into direct current electric energy through a radio frequency energy acquisition system consisting of a microstrip antenna, a voltage doubling rectifying circuit and an energy management circuit; an alternating current electric field signal is collected through a differential dual-electrode sensor structure, and an electric field voltage signal is generated; amplifying the voltage signal through an instrument amplifier, and obtaining a digital signal of the electric field signal through an analog-to-digital conversion circuit; and processing and analyzing the alternating current electric field information according to the digital signal. By combining a radio frequency energy acquisition technology with a differential dual-electrode sensing structure, the electric field sensor has the performance characteristics of self energy supply, miniaturization, high precision, wide frequency response and low power consumption. The system can measure various types of electric field signals, including sine wave, triangular wave and square wave electric field signals, has a wide frequency range and a wide measuring range, and is excellent in linearity.

The application discloses an antenna device and an antenna system. The antenna device is an antenna array composed of multiple microstrip antenna units. Each microstrip antenna unit comprises a dielectric substrate, a radiation patch, a metal back plate, a feed probe and a shorting post. The radiation patch is located on the upper surface of the dielectric substrate, the metal back plate is located on the lower surface of the dielectric substrate, the feed probe penetrates the dielectric substrate to connect one end of the radiation patch with the metal back plate, and the shorting post penetrates the dielectric substrate to connect the other end of the radiation patch with the metal back plate. By configuring the shorting post on the radiation patch and simultaneously exciting the first-order mode and the second-order mode, the radiation power of the microstrip antenna unit in a preset area can be suppressed to generate a radiation zero point, so that the signal radiated by the microstrip antenna unit has asymmetry, and the asymmetry of the antenna array is realized. The antenna system composed of the antenna array can realize the coupling suppression of the transmitting and receiving arrays of the antenna system, and further improve the isolation of the transmitting and receiving arrays.

The invention provides a curved-surface conformal wireless passive heat flow sensor and a preparation method thereof, and belongs to the technical field of high-temperature sensors. The heat flow sensor comprises a metal wire, a silicon carbide substrate, a sensitive layer and a thermal resistance layer which are sequentially arranged from bottom to top; the sensitive layer comprises a thermopile, an inductor, a capacitor and a microstrip antenna which adopt an ink direct writing process and are made of metal, one end of the thermopile is connected with the capacitor, and the microstrip antenna and the inductor are connected with the other end of the thermopile; the thermal resistance layer is provided with at least one opening to expose a thermal junction of the thermopile; the metal wire connects the inductor and the capacitor to form a resonant circuit. The whole heat flow sensor is flexible, can be adaptively attached to the surface of a curved part, has the characteristic of high temperature resistance, realizes wireless and passive transmission of heat flow signals, and solves the problems that the lead is difficult to lead and the lead is easy to break in a high-temperature and high-rotation environment.

The invention belongs to the field of satellite mobile communication, and particularly provides a three-frequency-band circularly polarized flexible microstrip antenna and wearable equipment, used radiation patches are superconducting fabrics, a dielectric substrate is made of flexible felt materials and has the overall flexibility characteristic, so that the wearing comfort is ensured, the mode that two layers of radiation patches are stacked is adopted, and the antenna is more flexible. The upper-layer patch is subjected to special treatment such as branch knot loading and slotting to obtain a dual-band right-handed circularly polarized radiation characteristic, the parasitic patch is introduced to the upper surface of the upper-layer dielectric substrate to enhance the axial ratio bandwidth of the upper-layer patch, and the lower-layer patch is subjected to corner cutting treatment to obtain a left-handed circularly polarized radiation characteristic. And the isolation degree between the two ports is enhanced by introducing the metal short-circuit through hole. And the upper-layer patch and the lower-layer patch are fed by using a coaxial cable. Finally, the section of the antenna is only 0.05 lambda0, and the antenna is simple in structure, convenient to manufacture, good in performance and more convenient to wear on a human body, and meets the performance requirements of a Beidou navigation system.

The invention discloses a two-dimensional adjustable radar cross section enhanced surface. The enhanced surface is formed by adding a one-dimensional Van atta array of a phase shifter into a feeder line and copying the one-dimensional Van atta array on the other dimension. The one-dimensional Van atta array has a low profile, and under the condition that the incoming wave direction is known, electromagnetic waves are made to backtrack along the incoming wave direction by regulating and controlling the phase of a phase shifter in the array. The unit structure of the one-dimensional Van atta array is composed of an antenna and a phase shifter. The antenna is a slot-coupled feed microstrip antenna, the radiation patch is rectangular, the dielectric substrate is arranged below the radiation patch, the antenna grounding plane with a slot is arranged below the dielectric substrate, the slot is I-shaped, the second dielectric substrate is arranged, and the T-shaped antenna feed microstrip line is arranged below the second dielectric substrate. The antenna feed microstrip line is connected with the phase shifter, and the units of the array at equal intervals are connected in pairs through microstrip lines with the same length to form a one-dimensional Van atta array.

Disclosed is a curable composition which contains: a curable component that is radically polymerizable and contains an ethylenically unsaturated double bond; and an inorganic filler that is at least one substance which is selected from the group consisting of titanium oxide, calcium titanate and strontium titanate.

A microstrip antenna which includes a substrate, a ground on a second side of the substrate, a first patch on a first side of the substrate, and a second patch on the first side of the substrate. The first patch is connected to a first port. The second patch is separated from the first patch and connected to a second port. Each of the first and second patches is further formed with a plurality of shorting vias connected to the ground. The radiation patterns of each element also feature the RPD characteristic, which is promising for large-scale MIMO or array antennas.

The invention discloses an anti-interference array antenna of a satellite navigation receiver, which relates to the technical field of satellite navigation and comprises a radiation element, a ceramic substrate, an array element base and a metal bottom plate, a threaded hole is formed in the upper portion of the array element base, and a first slotted pan head screw is arranged in the threaded hole. The array element base is provided with a ceramic substrate and a radiation element through a slotted pan head screw I; the radiation element is positioned above the ceramic substrate; a central antenna array element is mounted at the central position of the top of the metal bottom plate, and a choke ring is arranged on the outer side of the central antenna array element; and an SMA connector is mounted below the slotted pan head screw I. Hardware-level mutual coupling suppression is realized by combining the multilayer microstrip antenna with the EBG choke ring and optimizing the arrangement of the antenna array elements, and by optimizing the hardware structure, the mutual coupling interference between the array elements is reduced from the source, the performance of the antenna is improved, and the interference positioning problem in an unknown mutual coupling environment is solved. Interference can be accurately and quickly positioned and suppressed, and the anti-interference capability of the antenna is improved.

The invention provides a microstrip antenna and electronic equipment, and relates to the technical field of antennae, and the microstrip antenna comprises a microstrip antenna body, a first liquid crystal phase shifter arranged at the horizontal polarization feed position of the microstrip antenna, and a second liquid crystal phase shifter arranged at the vertical polarization feed position of the microstrip antenna. The first liquid crystal phase shifter and the second liquid crystal phase shifter are configured to respond to the bias voltage signal to control the phase difference between the horizontal polarization wave and the vertical polarization wave of the microstrip antenna so as to control the microstrip antenna to be switched between the first circular polarization mode and the second circular polarization mode. According to the scheme, the first liquid crystal phase shifter and the second liquid crystal phase shifter are integrated in the microstrip antenna to control the microstrip antenna to be switched between the first circular polarization mode and the second circular polarization mode, so that the integration level of the microstrip antenna is effectively improved, the miniaturization design of the antenna can be realized, and the cost can be reduced.

A microstrip antenna, an antenna array, a radar, and a vehicle are provided. The microstrip antenna includes: a dielectric layer, and a metal layer and a ground plane layer disposed at two sides of the dielectric layer, wherein the metal layer includes a first radiation patch and a feeding portion; a length of a long side edge of the first radiation patch is determined based on an operating wavelength of the microstrip antenna, and a length of a short side edge of the first radiation patch is smaller than the length of the long side edge; the feeding portion is coupled between a center position of the long side edge of the first radiation patch and a short side edge, and the feeding portion is configured to transmit a high frequency signal to the first radiation patch or to transmit a space radiation signal received by the first radiation patch.

The invention provides a temperature-controlled shape memory alloy flexible microstrip antenna capable of automatically unfolding and a working method, and relates to the technical field of communication equipment, and the antenna comprises a plurality of microstrip antenna units, a flexible dielectric substrate, a grounding layer, and a metal via hole structure. Each microstrip antenna unit comprises a radiation patch, and the radiation patch comprises a patch matching layer and a patch radiation layer; the flexible dielectric substrate is arranged between the radiation patches and the grounding layer, the radiation patches of each microstrip antenna unit are arranged on the flexible dielectric substrate at equal intervals, and the grounding layer is located at the bottommost layer and is made of a shape memory alloy material; the metal via hole structure comprises a plurality of metal via holes arranged among the microstrip antenna units, an external coaxial cable penetrates through the metal via holes to connect the flexible dielectric substrate and the grounding layer, and the shape memory alloy material of the grounding layer can be stored at a set first temperature. And the device can be automatically unfolded to recover the original shape at the set second temperature.

The invention provides an integrated antenna integrating Beidou, low-orbit and Tiantong satellite communication and high-precision navigation positioning. A low-orbit satellite microstrip antenna, a GNSS high-precision microstrip antenna, a Tiantong microstrip antenna and a Beidou short message microstrip antenna are sequentially stacked on the upper surface of a PCB in a conical mode. A shielding cover is arranged on the lower side of the PCB; antenna radiation patches of the low-orbit satellite microstrip antenna are arranged on the outer edges of the upper surface and the lower surface of the low-orbit satellite antenna substrate and are not covered by the GNSS high-precision microstrip antenna; circuits of the low-orbit satellite microstrip antenna and the sky-pass microstrip antenna are arranged on the upper surface of the PCB circuit substrate. And circuits of the GNSS high-precision microstrip antenna and the Beidou short message microstrip antenna are arranged on the lower surface of the PCB. According to the invention, the four-in-one combined design of the antenna, the low-orbit satellite antenna, the Beidou short message antenna and the high-precision navigation antenna is adopted, so that the problem of performance insufficiency when each antenna is used independently is solved, complementation among the antenna, the low-orbit satellite antenna, the Beidou short message antenna and the high-precision navigation antenna is realized, and the cost is reduced; the electromagnetic compatibility between the antennas is improved through frequency band and polarization isolation design, and the stability of a communication link is guaranteed through interference resistance of the peripheral low-orbit satellite antenna.

The present invention provides an L-band small-size stacked microstrip antenna for missile-borne applications, belonging to the technical field of microwave communication. It solves the technical problems of relatively high profile height and too large planar size existing in the design of existing microstrip antennas applied to missiles. The technical solution is as follows: It includes a thin substrate and a thick substrate, a circular metal main patch located on the thin substrate respectively, U-shaped parasitic metal patches arranged in a distributed manner and U-shaped parasitic metal patches, rectangular parasitic metal patches and rectangular parasitic metal patches respectively arranged on the top of the thick substrate. The circular metal main patch is close to one side of the U-shaped parasitic metal patch, and a coaxial probe feed is provided on the lower surface of the thin substrate, and a metal floor is provided on the lower surface of the thin substrate. The beneficial effect of the present invention is that the present invention is applicable to an L-band small-size stacked microstrip antenna for missile-borne applications covering the L-band of 1.45 GHz - 1.55 GHz.

A GNSS active antenna with improved performance in the presence of interfering signals is described. The GNSS active antenna meets the requirements of DO-301 for Airborne GNSS antennas when in normal operation. The GNSS active antenna also generates a low elevation null steered to any azimuth angle when in an environment with an interfering signal. The null has minimal performance impacts at higher elevation angles near zenith. The GNSS active antenna includes a right-hand circular polarized microstrip antenna with a concentric vertically polarized monopole antenna. The GNSS active antenna also meets the requirements of ARINC 743 antenna outline and mounting hole pattern.

A microstrip antenna includes a dielectric substrate, a ground electrode provided on a first surface of the substrate, an antenna element including a plurality of radiating elements on a second surface of the substrate opposite the first surface so as to extend parallel to one another and a connecting element provided on the second surface to extend in a direction intersecting with the radiating elements and connect the radiating elements, a feed line including a first end portion connected to a portion of the endmost radiating element in plan view, where the portion is located on an extension of the connecting element, and a second end portion provided on a side surface of the substrate between the first and second surfaces to receive power, and a connection line including a section located on the side surface along the feed line and connecting the endmost radiating element to the ground electrode.

A microstrip antenna which includes a substrate, a microstrip patch configured on a first side of the substrate, a ground configured on a second side of the substrate which is opposite to the first side, and a first shorting wall extending from a side of the microstrip patch toward the ground. The first shorting wall substantially overlaps with the substrate on a direction that is perpendicular to the microstrip patch. The first shorting wall is located at a first non-radiating edge of the microstrip antenna. Dummy elements are no longer needed in this design, which makes it compact.

A microstrip antenna (10), comprising: a metal ground layer (1), a first dielectric substrate (2) located on one side of the metal ground layer (1), a microstrip line (3) located on the side of the first dielectric substrate (2) facing away from the metal ground layer (1), a second dielectric substrate (4) located on the side of the microstrip line (3) facing away from the metal ground layer (1), a radiation patch (5) located on the side of the second dielectric substrate (4) facing away from the metal ground layer (1) and connected to the metal ground layer (1), a support layer (6) located on the side of the radiation patch (5) facing away from the metal ground layer (1), and a parasitic patch (7) supported on the side of the support layer (6) facing away from the metal ground layer (1). In embodiments of the present disclosure, the parasitic patch (7) and the metal ground layer (1) are provided on two sides of the radiation patch (5), so as to effectively increase the radiation area of the microstrip antenna (10), thereby increasing the gain, and reducing the power consumption of the microstrip antenna (10) while expanding a signal coverage range.

The invention relates to a single-person installation tool for a conical surface product microstrip antenna, and solves the problems of low efficiency and insufficient reliability of the existing tool and method. The tool comprises a tool main body block, the tool main body block is provided with a positioning pin, one side of the tool main body block is fixedly connected with an elastic bridle, the two sides of the elastic bridle are respectively provided with a non-elastic bridle fixedly connected to the tool main body block, and a buckle matched with the elastic bridle and a ratchet tensioner matched with the non-elastic bridle are fixedly connected to the other side of the tool main body block. A wave-absorbing sponge is fixed on the surface of the tool main body block, and the tool main body block is provided with a signal line interface which is respectively connected with the microstrip antenna and the signal simulator. The front end and the rear end of the tool are fixed through the inelastic bridle and the ratchet tensioner, the consistency of installation of the test tool every time is improved, the stability of installation is improved, interference of human factors is reduced, the possibility of electromagnetic leakage is reduced, and the testing accuracy of the radio altimeter is improved.

The utility model provides an integrated dual-system telemetering signal receiving and processing system, which comprises a tripod, a telemetering receiving device arranged on the tripod and a telemetering data processing terminal electrically connected with the telemetering receiving device, the telemetering receiving device comprises a case, and a first microstrip antenna, a second microstrip antenna, a lithium battery, a data processing module, an S-band low-noise amplifier and a C-band cavity filter which are arranged in the case; the cabinet is provided with an antenna signal output port, a network interface, a power socket and a power switch. The integrated double-system telemetry signal receiving and processing system is high in integration level, simple in structure and convenient to operate, the unfolding time is about 3 minutes, the system can be used after being started, no preparation time is needed, the device can be deployed outdoors, field operators can carry out data monitoring and processing through the telemetry data processing terminal indoors or in a vehicle, and the system is suitable for popularization and application. Therefore, the workload of operators is effectively reduced, and the testing efficiency is improved.

The invention relates to a wide-angular-domain low-scattering omnidirectional microstrip antenna, which comprises a first dielectric substrate, wherein an upper radiation patch and an annular wave-absorbing structure are etched on the upper surface of the first dielectric substrate, and a lower radiation patch is etched on the lower surface of the first dielectric substrate; the upper radiation patch is located on the inner side of the annular wave-absorbing structure and is connected with the lower radiation patch through the first metal via hole; a plurality of first chip resistors distributed along the circumference are arranged on the annular wave-absorbing structure; the second dielectric substrate is located below the lower radiation patch, and a metal floor is etched on the lower surface of the second dielectric substrate; the metal floor is connected with the upper radiation patch through the second metal via hole and is connected with the annular wave-absorbing structure through the third metal via hole; the upper surface of the metal floor is provided with a plurality of second chip resistors, and the upper radiation patch is connected with the second chip resistors through fourth metal through holes. The triple wave absorbing paths are directly integrated on the antenna body, the low scattering performance is achieved, the original profile height is kept, and the dual-polarization single-station and dual-station RCS in the upper half space of the antenna is effectively reduced.

The invention discloses a solid-state spin quantum nondestructive detector, which comprises a laser module used for outputting excitation light, and an NV color center generates photoluminescence under the irradiation of the excitation light; the microwave module is used for outputting and modulating a microwave signal; the sensor is used for detecting an external leakage magnetic field and comprises an optical fiber with one side end face being an inclined plane and a diamond which is arranged below the inclined plane and contains an NV color center, and the excitation light is transmitted through the optical fiber and then forms reflection excitation light and transmission excitation light through the inclined plane; according to the invention, a part of split excitation light is used as reference light to carry out differential noise reduction processing, so that the measurement precision is improved, and the surface crack of the to-be-measured object can be accurately measured; the beveled optical fiber is combined with the diamond containing the ensemble NV color center, the beveled optical fiber is used for replacing a traditional optical prism or an optical fiber beam splitter to achieve laser beam splitting, and the beveled optical fiber beam splitter has the advantage of being small and exquisite and can be conveniently integrated on a microstrip antenna.

The application provides a microwave millimeter wave three-frequency co-aperture antenna combining a monopole array and a transmission array, comprising a plurality of layers of PCB boards, the plurality of layers of PCB boards comprising a first dielectric plate, a second dielectric plate, a third dielectric plate, a fourth dielectric plate, a fifth dielectric plate and a sixth dielectric plate, the surfaces of the first dielectric plate, the second dielectric plate, the third dielectric plate, the fourth dielectric plate, the fifth dielectric plate and the sixth dielectric plate are provided with metal layers, the metal layers on the first dielectric plate, the second dielectric plate, the third dielectric plate and the fourth dielectric plate are provided with rectangular patches, the peripheries of the rectangular patches are provided with annular slots, the annular slots are connected with the rectangular slots, the metal layers are further provided with a first slot and a second slot, and the metal layer of the fourth dielectric plate is further provided with a microwave frequency band feed network; the metal layer of the fifth dielectric plate is provided with an I-shaped slot; and the metal layer of the sixth dielectric plate is provided with a microstrip antenna. The application can effectively realize high aperture utilization, high structural multiplexing rate and miniaturization of the overall antenna.

The embodiment of the present application relates to the technical field of antenna, and discloses a microstrip antenna, the microstrip antenna includes dielectric substrate, radiation patch and ground sheet, the dielectric substrate is provided with first surface and second surface, the first surface and the second surface are oppositely arranged;The radiation patch is arranged on the first surface, and the radiation patch is provided with a plurality of first slits;The ground sheet is arranged on the second surface, and the ground sheet is provided with a plurality of second slits, wherein, in the direction from the first surface to the second surface, the radiation patch and the ground sheet overlap, and the vertical distance between the radiation patch and the ground sheet is less than 0.01 lambda. Through the above mode, the embodiment of the present application can realize the end-fire of the microstrip antenna.

The present invention discloses a beam-broadening microstrip antenna structure, comprising a base, a metal cover, and an antenna body. The base is mounted with the metal cover, which is a hollow structure. The top of the metal cover defines a first radiation port, and the periphery of the metal cover defines a second radiation port. The antenna body is fixedly mounted between the metal cover and the base. The present invention effectively broadens the beam width of a microstrip antenna and is applicable not only to linearly polarized microstrip antennas but also to circularly polarized microstrip antennas, offering improved adaptability.