203 results about "Microstrip antenna" patented technology

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.

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.

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 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.

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.

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 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.

This invention relates to a microwave multi-mode flow measurement method for horizontal oil-water two-phase flow, employing a combination of a coplanar waveguide-excited helical microwave sensor and a dual-coaxial microstrip antenna sensing unit. The method includes: constructing a relationship between the mixing dielectric constant and water holdup of the horizontal oil-water two-phase flow based on the phase output signal of the coplanar waveguide-excited helical microwave sensor, thereby obtaining formulas for predicting water holdup and oil holdup using the dielectric constant of the oil-water mixture in a horizontal pipe; utilizing the upstream and downstream phase output signals of the dual-coaxial microstrip antenna sensing unit; constructing a correlation velocity model for the horizontal oil-water two-phase flow under different operating conditions based on experimental data, obtaining the functional relationship between the correlation velocity of the mixed fluid in the pipe and the mixing velocity and the phase-separated apparent velocity; and constructing a drift model for the horizontal oil-water two-phase flow under different flow patterns, obtaining functions relating the mixing velocity, the oil phase apparent velocity, and the oil holdup. This invention offers high measurement accuracy.

The invention relates to the field of unmanned aerial vehicle early warning, and provides a helmet-type lightweight individual unmanned aerial vehicle early warning interference system, which comprises a helmet, uniformly distributed microstrip antennas are attached to the outer wall of the helmet, the microstrip antennas provide an unmanned aerial vehicle data transmission communication link, and a signal processor is fixedly connected to the rear side of the outer wall of the helmet. The input end of the signal processor is electrically connected with the output end of an elastic cable, the input end of the elastic cable is electrically connected with a battery, the battery is used for supplying power to the signal processor, the bottom ends of the left side and the right side of the outer wall of the helmet are fixedly connected with alarm devices, and the alarm devices are used for giving an alarm. And the carrier is prompted of abnormal danger. Based on the radio reconnaissance interference technology, in the marching or sightseeing process of an individual soldier, a helmet is worn to be powered on, when a suspicious unmanned aerial vehicle signal is detected, alarm equipment gives an alarm, and soldiers in ground combat and armored vehicles can rapidly recognize and discover the small unmanned aerial vehicle.

This invention relates to the field of aircraft antenna technology, and discloses a low-tilt, wide-beam, high-gain, low-profile aircraft antenna, comprising a rectangular waveguide body, a radiating aperture, a beam modulation control, and a protective structure. The radiating aperture is the open end of the rectangular waveguide body, the beam modulation control is located at the radiating aperture, and the protective structure covers the rectangular waveguide body and the radiating aperture. The rectangular waveguide body is a highly compressed structure. This invention solves the problems of high beam tilt, narrow beamwidth, and low antenna gain commonly used in microstrip antennas for aircraft, and features low tilt, wide beam, high gain, and low profile, which can greatly improve the widespread use of low-tilt, wide-beam, high-gain, low-profile antennas in various aircraft.

The utility model provides a four-array microstrip antenna applied to a high-frequency wireless charging technology, which comprises patch antennas arranged in a 2 * 2 array and a feed network connecting the four patch antennas, and the feed network comprises two identical T-shaped power dividers. Four output ports of the two T-shaped power dividers are respectively connected with a patch antenna through a first microstrip line, and input ports of the two T-shaped power dividers are connected through a second microstrip line. The four-array microstrip antenna provided by the utility model has a good transmission characteristic, and the radiation gain of the antenna array is improved.

The invention discloses a passive current measuring device which comprises a first loop and a second loop, wherein the first loop is composed of a microstrip antenna, an RF switch, a rectifying circuit and a micro-power-consumption oscillator and used for intermittently reflecting or absorbing environment radio-frequency signals, and the second loop is composed of a magneto-dependent resistor, the rectifying circuit and the micro-power-consumption oscillator and used for converting a magnetic induction intensity value into a magneto-dependent resistor value. An innovative magneto-resistor technology is adopted and fused with a back scattering technology, passive non-contact measurement of current is achieved, an FPC board is tightly attached to the surface of a measured conductor, errors caused by different position angles of the measurement device are greatly reduced, the weight of the measurement device is reduced through the back scattering technology and radio frequency energy collection, and the measurement precision is improved. And the problem of unstable energy supply is solved.

This invention discloses a surface waveguide microstrip antenna for solid-state color center spin. The surface waveguide microstrip antenna includes an outer antenna, a middle antenna, and an inner antenna on a diamond substrate. Blind holes are formed on the substrate, and the diamond is nested within these holes, with the upper surface of the diamond flush with the upper surface of the substrate. The outer, middle, and inner antennas are all square ring-shaped and nested sequentially from the outside to the inside. Each of the outer and middle antennas has an opening on its side, located on opposite sides of their respective antennas. The outer, middle, and inner antennas together form the surface waveguide microstrip antenna with a resonant frequency of 2.87 GHz. Electromagnetic waves are transmitted between the surface waveguide microstrip antennas via radiation, generating resonance. This invention not only offers high power and high uniformity of the microwave magnetic field but also eliminates the need for additional flying wires, simplifying the installation process.

Even when mounted on a dielectric panel, it reduces the non-uniformity of the radiation pattern compared to conventional methods. [Solution] The antenna device 1 comprises an antenna module 10 configured as a microstrip antenna including planar feeding elements 14, 16 and a ground conductor 12, and strip-shaped parasitic elements 22, 23. The parasitic elements 22, 23 have a length of 3 / 4 or more of the operating wavelength λ of the antenna device 1. At least a portion of the parasitic elements 22, 23 is at a distance of 1 / 4 to 3 / 4 of the operating wavelength λ of the antenna device 1 from the ground conductor 12.

The utility model belongs to the technical field of phased array radar antennas, and relates to a broadband wide-angle scanning matching structure based on a microstrip antenna, which comprises a metal floor, a feed layer dielectric substrate, a copper layer and a radiation layer dielectric substrate, the lower surface of the feed layer dielectric substrate is fixedly connected with the metal floor, copper layers are etched on the upper surface and the lower surface of the feed layer dielectric substrate, metal isolation electric walls are arranged on the edge and the interior of the feed layer dielectric substrate, and the metal isolation electric walls are connected with the copper layers; the radiation layer dielectric substrate is adhered to the upper surface of the feed layer dielectric substrate; a metal isolation electric wall is introduced into a feed medium substrate, and the metal isolation electric wall surrounding the edge of the feed medium substrate forms an integrated back cavity structure, so that high-Q-value resonance excited by a parallel plate mode is suppressed; therefore, in-band resonance of the microstrip antenna is effectively suppressed, and broadband wide-angle scanning of the microstrip antenna is realized.

The present invention provides a thermosetting resin composition that yields a cured product (dielectric substrate) with excellent high dielectric constant and low dielectric loss tangent, a dielectric substrate made from the resin composition, and a microstrip antenna equipped with the dielectric substrate. [Solution] The thermosetting resin composition of the present invention comprises (A) a thermosetting resin, (B) a high dielectric constant filler, and (C) a coupling agent represented by the following general formula (1), wherein the high dielectric constant filler (B) comprises at least one selected from calcium titanate, strontium titanate, barium titanate, magnesium titanate, and titanium oxide. TIFF2026111704000022.tif16153

The application discloses a high-isolation low-cross-polarization dual-linear-polarization microstrip antenna, belonging to the field of microwave radio frequency antennas, and containing a parasitic patch, a main radiation patch, an integrated differential feeding network and a metal cavity. The main radiation patch adopts four-point central symmetric differential feeding, and two groups of orthogonal feeding points are excited through a multilayer PCB built-in 3dB / 180° differential feeding network to cancel common-mode current and polarization coupling field from a radiation source. The main radiation patch and the bottom feeding network are physically separated by an independent non-contact metal ground layer to prevent direct current conduction coupling. A continuous metal ground isolation belt is arranged between the two groups of polarization feeding networks, and a dense array of metalized ground holes is arranged to form a virtual electric wall to block the coupling of the feed line and the horizontal propagation of the substrate surface wave. The antenna retains the low profile and miniaturization characteristics of the microstrip antenna, and has high isolation, low cross-polarization and wideband characteristics in the full frequency band. The structure is simple and easy to produce, and is suitable for wireless communication, radar and satellite communication scenes.

The application discloses a kind of millimeter wave MIMO antennas based on current cancellation model E / H plane decoupling, including metal floor, dielectric substrate, microstrip antenna unit, drainage metal branch, parasitic metal branch and coaxial feed port group composition.Metal floor is printed in the lower surface of dielectric substrate;Multiple microstrip antenna units are printed on the upper surface of dielectric substrate, and are connected with multiple coaxial feed ports respectively;E-plane microstrip antenna unit is respectively loaded with drainage metal branch to realize E-plane decoupling;H-plane microstrip antenna unit is respectively loaded with parasitic metal branch to realize H-plane decoupling.The application can realize MIMO antenna E / H plane simultaneous decoupling, and structure is simple and easy to process, can be applied to millimeter wave MIMO antenna system needing high isolation, and asymmetric millimeter wave MIMO antenna array.

To provide a microstrip antenna that can improve the efficiency of energy conversion from an electric signal to a radio wave.SOLUTION: A microstrip antenna includes a radiating element. The radiating element has a first radiating region having a first major axis parallel to a first direction and a first minor axis perpendicular to the first major axis, and a second radiating region having a second major axis parallel to the first direction and longer than the first major axis, and a second minor axis perpendicular to the second major axis. The length of the second minor axis is shorter than the length of the first minor axis.SELECTED DRAWING: Figure 1

The application provides a device and method of fusing radar radio frequency induction and heterogeneous interface coupling technology, through an electromagnetic super surface pattern array antenna with metal characteristics on the inner surface of the heterogeneous interface, a fixed module is bonded around the electromagnetic super surface pattern array antenna, the fixed module and the electromagnetic super surface pattern array antenna jointly form a closed electromagnetic wave resonance cavity region, a high polymer medium material for radiating and conducting electromagnetic waves is built-in, and a radar radio frequency induction control system; electromagnetic waves emitted by a radar microstrip antenna are repeatedly reflected, superimposed and enhanced in the electromagnetic wave resonance cavity region through the high polymer medium material, and then radiated to an external space induction area of the heterogeneous interface through the electromagnetic super surface pattern array antenna, so that activities or micro-motion targets in the induction area range are detected, and a double threshold control logic output control instruction is adopted to improve the induction and control precision of the radar induction system.