379 results about "Dipole" patented technology

The invention relates to the technical field of dam leakage detection, in particular to a high-precision three-dimensional dam leakage detection method and system, and the method comprises the steps: laying a first measurement line and a second measurement line at the top of a dam, laying a third measurement line at an upstream slope of the dam, and laying a fourth measurement line at a downstream slope of the dam; the first measuring line, the second measuring line, the third measuring line and the fourth measuring line are respectively arranged in parallel; the method comprises the following steps: obtaining dipole-dipole data, tripolar data and gradient data respectively tested by a first test line, a second test line, a third test line and a fourth test line; according to the structural data, the dipole-dipole data, the three-pole data and the gradient data of the dam, constructing a joint resistivity inversion model of the dam; and positioning a leakage risk area of the dam according to the structural data of the dam and the combined resistivity inversion model. According to the invention, an accurate leakage detection result of the dam body is formed, so that leakage fault pre-diagnosis of the dam is realized.

A transparent wideband microwave absorber unit cell, a transparent wideband microwave absorber and a method of forming a transparent wideband microwave absorber, include a metal substrate, a first layer of glass attached to the metal substrate and having a first pattern of indium tin oxide (ITO) configured as a square loop centered about a central vertical axis and a second pattern of ITO including four equidistant square patches, a second layer of glass attached to the first layer of glass and having a third pattern of ITO configured as a dipole having a cross shape with a center axis coaxial with the central vertical axis, and a third layer of glass attached to the second layer of glass and having a fourth pattern of ITO configured as five circular patches, with a first circular patch located coaxially with the central vertical axis and four equidistant circular patches.

The invention relates to a p-type niobium oxide dipole-based metal-oxide-semiconductor device and a manufacturing method thereof, and belongs to the technical field of semiconductor device manufacturing. According to the technical scheme, the MOS device is provided. A gate dielectric stack of the MOS device sequentially comprises an interface layer, a high-k dielectric layer and a p-type electric dipole layer containing niobium oxide from bottom to top. According to the preparation method, the dipole layer is deposited by adopting an atomic layer deposition process, and then atoms in the dipole layer are driven to be diffused to the interface of the high-k dielectric layer and the interface layer through high-temperature rapid annealing treatment so as to form effective electric dipoles. Compared with the prior art, the high dielectric constant characteristic is utilized, the threshold voltage can be positively regulated and controlled to a larger extent, meanwhile, the increase of EOT is remarkably inhibited, and good interface quality is kept.

Disclosed is a decoupling dipole structure that renders a midband dipole effectively transparent to a nearby lowband dipole. This not only improves the beam quality in the lowband without sacrificing beam quality in the midband, it also enables different lowband dipoles to be employed to customize the lowband performance of the multiband antenna without requiring a redesign of the midband dipoles or of the array face.

A low band dipole for a dense multiband antenna array has a plurality of dipole arms. The dipole arms have a coupling plate disposed on a first side of a PCB and a conductive trace pattern disposed on a second side of the PCB. The conductive trace pattern has a plurality of resonator block structures that are coupled together by a phase shifting trace along a first edge of the conductive trace pattern and a bandwidth compensating disposed along a second edge of the conductive trace pattern.

The utility model provides an ultra-wide-band high-performance array antenna, which comprises a plurality of ultra-wide-band oscillator units arranged on a reflecting substrate in an array form, the ultra-wideband oscillator unit comprises a plurality of radiation parts arranged on the dielectric plate at intervals, and the radiation arm of any radiation part and the radiation arm of the adjacent radiation part are collinear to form a dipole; in one radiation piece, any two adjacent radiation arms are perpendicular to each other to form a dual-polarized oscillator; the ultra-wideband oscillator unit further comprises a parasitic branch knot. The parasitic branches are arranged between every two radiation pieces, and the parasitic branches are arranged on the dielectric plate in the horizontal direction and the vertical direction; the radiation part and the parasitic branch knot are coupled and connected to form a frequency expanding structure. According to the utility model, the S parameter of the oscillator unit is optimized by arranging the coupling frequency-broadening structure and the parasitic branch knot, electromagnetic waves are guided through the cooperation of the reflecting strip, the isolating strip and the director, the interference of high frequency to low frequency is reduced, the standing-wave ratio of the antenna is further reduced, and the directivity of the antenna is improved.

The invention provides a heart model calibration method and system, electronic equipment and a medium. The heart model calibration method comprises the following steps: acquiring to-be-calibrated magnetocardiogram data by utilizing a sensor array; processing the to-be-calibrated magnetocardiogram data by using a time sequence so as to identify an R moment corresponding to a ventricular depolarization peak value; calculating based on the spatial distribution of the sensor array to obtain the direction of an equivalent current dipole at the R moment; and constructing a rotation matrix according to the long axis direction of the general heart model and the direction of the equivalent current dipole at the R moment, and calibrating the heart model corresponding to the to-be-calibrated magnetocardiogram data by using the rotation matrix. According to the heart model calibration method, the magnetocardiogram data can be automatically calibrated, and an accurate personalized heart model can be generated without depending on individual historical physiological data.

This application provides a multi-band shared-aperture antenna. The multi-band shared-aperture antenna includes a first antenna array, a second antenna array, and a reflection panel, where the first antenna array includes four first dielectric plates perpendicular, two adjacent first dielectric plates are perpendicular to each other, the first antenna array includes four hollowed butterfly dipole units, the dipole unit includes two radiation arms, the two radiation arms are respectively printed on two adjacent first dielectric plates, the radiation arm includes a first part and a second part, a first feeding stub is disposed on the first dielectric plate, the second part has a specified width in a direction perpendicular to the reflection panel, the second antenna array includes a plurality of second dielectric plates, four ring-shaped coils are disposed on any one of the second dielectric plates, and the ring-shaped coil is connected to a second feeding stub.

A midband dipole for a multiband antenna has a plurality of decoupler circuits; a plurality of dipole arms, each having a first region, a second region, and a connecting trace coupling the first region to the second region, wherein the first region is coupled to one of the plurality of decoupler circuits, and the second region is coupled to an adjacent decoupler circuit; and a plurality of suppressor plates, wherein each of the plurality of suppressor plates is coupled to a corresponding first region of a corresponding dipole arm, and each of the plurality of suppressor plates covers a gap between the corresponding dipole arm and an adjacent dipole arm. The midband dipole mitigates resonance from nearby lowband dipoles by suppressing resonance where hot spots might occur in gaps between adjacent dipole arms.

Disclosed herein is a stellarator comprising two sets of coils, namely a set of encircling coils which encircle the plasma axis, and a set of shaping coils which do not encircle any other coil or the plasma. In some embodiments, the encircling coils include a structural element to maintain their shape under magnetic forces. In some embodiments, the shaping coils are mounted onto one or more structural elements which, together with the shaping coils, constitute a field shaping unit. Also disclosed is a controller which may modify the electrical current flowing in one or more subsets of the coils in order to achieve target plasma parameters. Also disclosed is a method of designing a set of shaping coils by discretizing a surface dipole or current potential distribution.

A semiconductor device includes a substrate, an interfacial layer formed on the semiconductor substrate, and a high-k dielectric layer formed on the interfacial layer. At least one of the high-k dielectric layer and the interfacial layer is doped with: a first dopant species, a second dopant species, and a third dopant species. The first dopant species and the second dopant species form a plurality of first dipole elements having a first polarity. The third dopant species forms a plurality of second dipole elements having a second polarity. A first concentration ratio of the first concentration of the first dopant species to the second concentration of the second dopant species of the p-type transistor is different from a second concentration ratio of the first concentration of the first dopant species to the second concentration of the second dopant species of the n-type transistor.

The invention belongs to the technical field of microwave antennas, and particularly provides a tight coupling phased array with a tail end unit loaded with asymmetric dipoles. The main structure of the antenna comprises a radiation structure (I) which is composed of frequency selection surfaces which are arranged above folded dipoles and are periodically arranged, dipoles which are symmetrically arranged in a central unit and dipoles which are asymmetrically arranged in an edge unit; and the feed structure II is composed of a gradient microstrip feeder line, a metal floor and a coaxial line. According to the invention, a frequency selective surface is loaded above a folded dipole, a traditional tight coupling phased array is replaced, a heavy dielectric layer is loaded above the dipole, and a 1 * 8 one-dimensional linear array is designed. Besides, by prolonging the length of the folded dipole on the tail end array element, compared with a traditional structure, extra capacitance is introduced under the condition that the height of the array section is not changed, and the problem that the array is difficult to match at low frequency is effectively relieved.

The application discloses a kind of based on ensemble rare earth ions double quantum bit controlled gate construction method, it is related to quantum control technical field, it includes to double quantum bit frequency site selection, and respectively as control bit, target bit;Utilize the blocking effect generated by the dipole-dipole interaction between double quantum bits to construct controlled gate, including: to control bit apply light pulse driving control bit is from ground state transition to excited state;To target bit apply single quantum gate to drive its evolution, and apply compensation pulse;To control bit apply light pulse driving control bit from excited state de-excitation to ground state.The application utilizes the interaction of the light pulse and quantum system medium that can be optimized to produce arbitrary geometric quantum logic gate on target quantum bit, and simultaneously by using the blocking effect caused by dipole-dipole interaction, the evolution of target bit quantum bit can be constrained by control bit.

A dipole including a flexible end configured for being plugged into a socket in an antenna structure. The flexible end includes two plastic parts hingedly connected to each other. The dipole provides a pluggable and adjustable connection with the antenna structure.

The present invention discloses a bowl-shaped die-cast vibrator, which is applicable to the technical field of wireless communication equipment; it includes a low-frequency dipole component, a disassembly assembly and an adjustment assembly, wherein the low-frequency dipole component is composed of a hinged mounting body and a low-frequency dipole, and the four low-frequency dipole bodies are orthogonally distributed and provided with a feeding balun and a radiation arm. The disassembly assembly realizes rapid locking and separation of adjacent dipole bodies by plugging the positioning column into the positioning hole and clamping the auxiliary mechanism into the locking mechanism; the adjustment assembly utilizes the screw rod in the cross groove of the bearing plate to connect the dipole threaded seat, and the driving assembly drives the screw rod synchronously through the transmission of the ring gear and the gear, so as to realize synchronous adjustment of the dipole angle to change the signal radiation intensity. In addition, the mounting mechanism can dynamically adapt to transmitters of different specifications according to the dipole angle through the elastic bearing tube and the clamping piece. The present invention significantly improves the equipment assembly efficiency, adjustment accuracy and transmitter adaptability, and effectively optimizes the signal radiation quality.

This utility model belongs to the field of radar antenna technology and relates to a quick-release triangular dipole antenna. The antenna includes a connecting wire, at least one triangular dipole, and several linear dipoles. The connecting wire includes a base and several parallel metal tubes. Each metal tube is connected to one end of the base. One end of each linear dipole is fixedly connected to a metal tube. The triangular dipole includes a first linear dipole, a second linear dipole, a bent dipole, a mounting base, a pressure block, and a wing screw. On the one hand, dividing the triangular dipole into three sections greatly reduces the packaging size, and the tubular structure of both the linear and bent dipoles reduces the overall antenna weight, making it very suitable for portable use. On the other hand, the mounting structure proposed in this utility model is stable and reliable, and easy to assemble and disassemble.

The invention relates to a flow polarization process for improving the polarization efficiency of a ceramic / polymer-based piezoelectric composite material, and belongs to the technical field of flexible piezoelectric composite materials. Piezoelectric nanorods selected by the composite material are consistent in electric dipole orientation under a mesoscale (can be prepared by a molten salt method, a hydrothermal method or an electrostatic spinning method), a thermosetting polymer is used as a matrix (such as polydimethylsiloxane, thermosetting epoxy resin and the like), and polarity orientation of piezoelectric filler in the polymer matrix is regulated and controlled by means of electrophoresis, so that the piezoelectric composite material is obtained. The orientation of the electric dipoles of the material is consistent under the macroscopic scale, the material is firstly polarized and then molded, and the polarization efficiency of the material is remarkably improved.

The invention discloses ribbon complementary FET (CFET) metal gate multiple voltage threshold integration. A stacked complementary field effect transistor (CFET) device includes a bottom contact region and a top contact region. A plurality of stacked CFET devices are between the bottom contact region and the top contact region. A respective stacked CFET device of the plurality of stacked CFET devices includes a first transistor layer of a first type over the bottom contact region, and a second transistor layer of a second type over the first transistor layer. The first transistor layer includes a first plurality of channels surrounded by a first metal gate stack, and the second transistor layer includes a second plurality of channels surrounded by a second metal gate stack, a respective stacked CFET device of the plurality of stacked CFET devices includes a different combination of N dipole doses and P dipole doses in both the first metal gate stack and the second metal gate stack.

The application discloses a single-port-fed dual-frequency omnidirectional circularly polarized antenna, which comprises two vertically intersecting +45-degree first dielectric substrates and -45-degree second dielectric substrates. The upper surface of the +45-degree first dielectric substrate is printed with two concentric zero-phase-shift magnetic rings, wherein the outer ring is a zero-phase-shift low-frequency magnetic ring, and the inner ring is a zero-phase-shift high-frequency magnetic ring; the upper and lower surfaces of the -45-degree second dielectric substrate are respectively printed with two arms of a dual-frequency dipole, the dual-frequency dipole is composed of a first low-frequency dipole and a first high-frequency dipole and is connected through a metal column. Signals enter from a port, and the first low-frequency dipole arm, the first high-frequency dipole arm and the zero-phase-shift low-frequency magnetic ring and the high-frequency magnetic ring are simultaneously and in-phase excited through two microstrip feed lines printed on the upper and lower surfaces of the -45-degree second dielectric substrate, so that dual-frequency circularly polarized radiation is realized. The designed low-frequency magnetic ring and the high-frequency magnetic ring can realize good omnidirectional radiation of the antenna. The antenna works at two frequency bands of 2.45 GHz and 5.8 GHz, and good omnidirectional circularly polarized radiation is realized.

The invention discloses a high-gain spatial directivity construction method of a single-vector hydrophone, and relates to the technical field of underwater acoustic signal processing. Acquiring a sound pressure signal and a three-dimensional vibration velocity signal of the target area by using a three-dimensional vector hydrophone; equally dividing the orientation guide angle of the three-dimensional vector hydrophone to obtain a plurality of guide directions; for each guide direction, extracting a horizontal vibration velocity component in the three-dimensional vibration velocity signal, and obtaining two paths of dipole combined vibration velocity signals in each guide direction according to the horizontal vibration velocity component; performing synthetic convolution operation according to the sound pressure signal and the two paths of dipole combined vibration velocity signals in each guide direction to obtain a plurality of synthetic convolution combined signals in each guide direction; and according to the response of all the synthetic convolution combination signals in each guiding direction, obtaining the corresponding synthetic convolution combination directivity. According to the invention, high-gain high-order combination directivity is constructed, and the stability of the detection precision of an underwater weak target is improved.

The application discloses an aircraft structured grid generation method and device based on dipole regulation, equipment and a storage medium, relates to the technical field of aircraft, and comprises the following steps: mapping a non-structured grid of an aircraft to a plane space corresponding to a parameter domain to obtain a parameter domain plane grid, and determining a compression ratio value between the non-structured grid and the parameter domain plane grid; determining a target feature point set based on the angle values of each dihedral angle in the parameter domain plane grid; generating an initial scalar field based on the compression ratio value, and superimposing a dipole field corresponding to a target dipole on the initial scalar field to form a target scalar field; adjusting a feature parameter corresponding to a target contour line in the target scalar field until the distance between the target contour line and each feature point in the target feature point set meets a preset condition, and then determining the adjusted target contour line as a target feature line to generate a target grid line of the aircraft. In this way, the aircraft structured grid with good orthogonality can be obtained.

The application belongs to the technical field of antenna in the communication system comprehensive design, and particularly relates to a kind of omnidirectional broadband antenna based on multimode resonance, L-shaped folded dipole, rectangular loop, U-shaped branch and SMA joint are located at the lower surface of dielectric substrate, feed line is located at the upper surface of dielectric substrate, first metallized via hole and second metallized via hole in the up-down direction are opened on dielectric substrate, the outer conductor of SMA joint is connected with the right arm of L-shaped folded dipole, the inner conductor of SMA joint is connected with one end of feed line by passing through the right arm of L-shaped folded dipole and first metallized via hole, the other end of feed line is connected with the left arm of L-shaped folded dipole by passing through second metallized via hole, the application generates new resonance frequency by bending traditional dipole to form L-shaped folded dipole;rectangular loop is added around L-shaped folded dipole, two new resonance modes are introduced, and the bandwidth of antenna is further widened.

The application provides an electromagnetic transmittance enhancer, and belongs to the technical field of microwave frequency electromagnetic wave regulation and control, comprising a plurality of super units arranged in a rectangular shape. Each super unit comprises a dielectric base, a dielectric substrate and a metal patch, the dielectric substrate is vertically arranged at the middle position on the top of the dielectric base; the metal patch is in an inverted L shape and is arranged on one side of the dielectric substrate; when the electromagnetic wave in the air is incident on the upper surface of the electromagnetic transmittance enhancer, the plurality of super units will simultaneously resonate, the electric field component of the transmitted electromagnetic wave will excite electric dipoles of different lengths in the horizontal and vertical directions of the metal patch, and the electric dipoles will interfere with the incident electromagnetic wave to cancel each other out, so that the resonance zero point of the synthesized dipoles points to the direction of the reflected wave, and the electromagnetic wave is transmitted forward from the gap channel between adjacent units. The electromagnetic transmittance enhancer provided by the application can improve the transmittance of electromagnetic wave transmission to the medium under a large incident angle.

A multiband antenna has an array face with closely spaced dipoles of multiple frequency bands in the low band, the mid band, and C-band or CBRS (Citizens Broadband Radio Service). The low band dipole has four dipole arms formed in a plurality of loops from a single piece of metal. In one embodiment, the loops successively decrease in dimension, resulting in a tapered dipole arm shape and has a bend that bends the dipole arms downward to accommodate radome curvature. In a second embodiment, the outermost loop of each dipole arm is larger in volume and has its lateral loop features bent downward.

The application discloses a PCI operation catheter, a delivery system and a control method thereof, directly drives the catheter head based on the non-polarity magnetic confinement effect, and forms a small head delivery system of the operation catheter with strong confinement, high precision and convenient operation. The operation catheter body head contains a magnetic confinement floating body which is flexibly confined by the catheter body head; the magnetic confinement floating body is a three-layer spherical structure, including a rigid non-metal outer spherical shell, a rigid non-metal inner spherical body with a free body with a dipole moment, and an interlayer filler between the outer spherical shell and the inner spherical body. The delivery system comprises the operation catheter and an electrically-controlled rotating dipole module which is operable outside the body; the electrically-controlled rotating dipole module drives the magnetic confinement floating body to move. The application has the advantages of strong confinement, high precision, miniaturization, more intuition, more convenience, easy learning, real-time force sense information feedback, low cost and more convenient operation for doctors.

The application discloses an antenna device, comprising: a connecting part for connecting with a transmission line of an external device; a grounding part for connecting with the ground of the external device; a first power dividing line connected with the connecting part; a second power dividing line connected with the grounding part; and multiple groups of dipoles; the first power dividing line comprises multiple parallel first connecting branches, and the second power dividing line comprises multiple parallel second connecting branches; each group of the dipoles comprises a first radiation surface and a second radiation surface, the first radiation surface of each group of the dipoles is connected with one of the first connecting branches, and the second radiation surface of each group of the dipoles is connected with one of the second connecting branches, so that the multiple groups of dipoles realize parallel feeding. The antenna device of the application is used for improving the horizontal direction radiation performance of the antenna device without enhancing the transmission power of the antenna device, and enhancing the transmission distance of the antenna device.

The application relates to the technical field of mobile communication, and discloses a dual-polarization dipole antenna based on odd mode and even mode fusion, which comprises a dielectric plate, a first dipole and a second dipole, the first dipole is printed on the upper surface of the dielectric plate, the second dipole is printed on the lower surface of the dielectric plate, and the first dipole is perpendicular to the second dipole. The application solves the problems that the existing dual-polarization dipole antenna cannot simultaneously meet the requirements of miniaturization and wide bandwidth.

The three-component distributed fiber optic acoustic wave sensor array acoustic logging device of this invention replaces the monopole, dipole, or multipole piezoelectric acoustic wave receiving transducers in conventional array acoustic wave logging devices with a three-component distributed acoustic wave sensing optical cable. This instrument can collect array acoustic wave signals for extended periods in high-temperature deep wells. The downhole receiving sensor requires no electronic components or wiring, solving the problem that downhole monopole, dipole, or multipole piezoelectric acoustic wave receiving transducers and their associated high-cost amplifiers, analog-to-digital converters, data storage devices, and downhole data transmission modules cannot operate for extended periods at high temperatures. Through the armored optoelectronic composite cable connected to the fiber optic array acoustic wave logging device, the backscattered Rayleigh light signal from the three-component distributed acoustic wave sensing optical cable can be transmitted at high speed to the surface multi-channel DAS modulator / demodulator, solving the bottleneck problem of high-speed upward transmission of large amounts of data signals collected by downhole array acoustic wave logging devices.

The invention discloses an electric field evaluation method and system based on potential-power transmission line coupling, and relates to the technical field of power system protection, and the method comprises the steps: building a current fluctuation model based on a lightning channel engineering model; hybrid emission of a current element i and a charge element q is adopted based on a current fluctuation model; obtaining a voltage U'under the condition of lossy earth through the induced voltage on each section of line; obtaining a total horizontal voltage based on the voltage under the condition of lossy earth and the voltage under the condition of lossless earth; the electric field is evaluated based on the total horizontal voltage. On the basis of a dipole current model, charge distribution introduction, current generation of magnetic potential and charge generation of potential are combined, the relative positions of charges and current elements can be improved when an electric field channel is discretely simulated by a computer, a near-field electric field can be simulated more accurately, and the simulation precision is improved. Meanwhile, the divergence problem caused by calculation truncation errors can be counteracted when the structure is coupled with a coil type structure, and the accuracy and stability of calculation are improved.