467 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.

Dipole antenna structures are disclosed. In certain embodiments, a dipole antenna structure includes a first dipole, a second dipole, a third dipole, and a fourth dipole aligned in parallel. The dipole antenna structure further includes a signal delay line structure electrically connected to a common signal feed. The dipoles are electrically connected to the common signal feed through the signal delay line structure.

Method to selectively diffuse dipole dopants into the high-k gate dielectric layer is provided. A method of the present disclosure includes an etching back process controlling DC and bias power, a periodical switching of the bias power is synchronized with a periodical switching of the DC power, leading to a balanced etching rate and uniform depth of recesses in dummy materials within the gate trenches for the subsequent selective diffusion process across different devices. Additionally, during the etching back process, a protective passivation layer can be formed as a barrier on the sidewall of the recess and / or at the bottom of the recess.

The invention discloses a broadband millimeter wave magnetoelectric dipole filtering antenna unit and a filtering array, the antenna is realized by adopting a multi-layer printed circuit board, and the antenna comprises a radiation layer printed circuit board and a feed layer printed circuit board. The radiation layer printed circuit board is provided with a magnetoelectric dipole radiator, and an electric dipole patch etched with an H-shaped gap reduces the size of the radiator while achieving low-frequency good filtering. A substrate integrated waveguide (SIW) cavity is arranged around the magnetoelectric dipole radiator, so that surface waves are suppressed, and the overall suppression effect of a stop band is enhanced. A strip line fed by a coaxial probe and a shielding SIW cavity structure are integrated on a feed layer printed circuit board, and the feed structure generates two radiation zero points at high frequency, so that good filtering response is realized. The antenna provided by the invention has the advantages of wide frequency band, small size, high out-of-band rejection level and frequency selectivity.

The invention discloses a device and a method for realizing a near-field dual-polarization perfect Janus dipole, and relates to the technical field of near-field coupling and excitation of dipoles. The implementation device comprises a dual-polarization perfect Janus dipole and two dielectric waveguides which are arranged in parallel. The implementation method comprises the steps of designing parameters of the dielectric waveguides and the dipoles, constructing a rectangular coordinate system, placing the two parallel dielectric waveguides on an xy plane, and placing the dipoles in the middle positions of the parallel dielectric waveguides. P-polarized and s-polarized waves excited by the dipole are coupled to the dielectric waveguide to excite guided waves, an electromagnetic field on the surface of the dielectric waveguide is detected through a detection device, and the near-field coupling characteristic of the dual-polarized perfect dipole is analyzed based on extracted field distribution data. The invention provides a new way for the development of polarization multiplexing photonic devices, quantum routing and on-chip signal processing technologies.

A method includes receiving a structure including a first region and a second region, forming a dielectric layer over the first region and the second region, forming a first patterned layer of a first dipole material on the dielectric layer in the first region, performing a first thermal drive-in operation to drive the first dipole material into the dielectric layer, forming a second patterned layer of a second dipole material on the dielectric layer in the second region, performing a second thermal drive-in operation to drive the second dipole material into the dielectric layer, performing a thermal operation to adjust distribution of the first dipole material or both the first and the second dipole materials in the dielectric layer, and forming a gate electrode layer over the dielectric layer. A portion of the first region overlaps with the second region.

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 hybrid multiport array antenna comprises a plurality of columns of hybrid dipole unit cells, each of the hybrid dipole unit cells having a first dipole of a first type, and a second dipole of a second type, wherein the first dipole of the first type and the second dipole of the second type are configured to receive a single pair of RF (radio frequency) signals, the pair of RF signals having two orthogonal polarization states, wherein the first dipole of the first type and the second dipole of the second type are spaced with an offset in a vertical direction. The arrangement of the hybrid dipole unit cells reduces the phase center distance between the dipoles in each column and between columns, thereby assuring high gain while reducing grating lobes and other signal gain degradations caused by longer distances between phase centers.

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 relates to the technical field of ultra-wideband antennas, and discloses an ultra-wideband wide-angle scanning tight coupling antenna and array, and the antenna comprises an impedance matching layer, an antenna radiation layer, an antenna supporting layer and a metal floor which are stacked from top to bottom. The impedance matching layer comprises three layers of eccentric cross-shaped dielectric plates, and the first eccentric cross-shaped dielectric plate at the top layer and the second eccentric cross-shaped dielectric plate at the middle layer are provided with circular grooves at the intersection center position of the two groups of orthogonal dipoles; the antenna radiation layer is provided with two groups of orthogonally arranged unequal-width pentagonal dipoles; the antenna supporting layer is provided with two groups of feed short circuit columns and two groups of metal rib belts; and the metal floor is provided with a two-section stepped feed through hole. According to the invention, the scanning range is expanded under the condition of ensuring good matching.

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.

Photonic controlled-phase gates that include a dipole emitter chirally coupled to a plurality of photonic qubit pairs in a waveguide are disclosed herein. Each photonic qubit pair includes a two-qubit state |xy, wherein the two-qubit state |xy comprises a combination of single-qubit states |0 and |1, and may be |00, |01, |10, and |11. The dipole emitter is configured to interact with the single-qubit state |0 to impose a π phase shift, and the dipole emitter interacts with states |00, |01, and |10 to impose the π phase shift.

The invention belongs to the technical field of geophysical exploration, and particularly discloses a ground well controllable source electromagnetic method joint inversion method and system based on a tensor source, and the method comprises the steps: carrying out the forward modeling of an established three-dimensional electrical model through a CSEM in a ground well, and obtaining the impedance tensor and a tipper of a tensor controllable source; constructing a three-dimensional ground and in-well CSEM combined inversion objective function and a gradient of the inversion objective function by using the model roughness matrix and the data fitting item; and solving the gradient of the inversion objective function by adopting an improved L-BFGS optimization algorithm based on a momentum method, and inverting the underground electrical structure. According to the method, through joint inversion and in combination with controllable source electromagnetic data in the ground and the well, the transverse and longitudinal resolution of exploration is improved, the multiplicity of inversion is reduced, and the inversion result is more reliable.

The invention relates to an organic crystalline piezoelectric material based on chiral 4-bromophenylethylamine hydrochloride, which is synthesized by using hydrochloric acid as an anion and protonated (R / S)-4-bromophenylethylamine as a cation according to the stoichiometric ratio of (R / S)-4-bromophenylethylamine to hydrochloric acid of 1: 1. The invention provides an organic crystalline piezoelectric material based on chiral 4-bromophenylethylamine hydrochloride and a preparation method, and provides a two-dimensional hydrogen bond network construction strategy based on protonated chiral amine: protonated (R / S)-4-bromophenylethylamine cations are used as structural elements, chloride ions are used as charge balance bodies, and the chiral 4-bromophenylethylamine hydrochloride is prepared by precisely regulating the interaction of intermolecular hydrogen bonds. Constructing a two-dimensional hydrogen bond network with high orientation; by enhancing ordered arrangement of molecular dipoles and optimizing a lattice strain-polarization response collaborative mode, breakthrough improvement of piezoelectric performance is successfully realized, and a new normal form is provided for developing high-performance organic piezoelectric materials.

The invention provides a micron rod-shaped Fe-Si-Al-based composite electromagnetic wave-absorbing material and a preparation method thereof, spherical FeSiAl alloy powder is subjected to ball milling to obtain micron rod-shaped powder, and the surface of the FeSiAl alloy powder is coated with TiO2 by utilizing hydrolysis reaction of tetrabutyl titanate, so that a FeSiAl-coated TiO2 core-shell composite electromagnetic wave-absorbing material is prepared; the FeSiAl-coated TiO2 core-shell composite electromagnetic wave-absorbing material is annealed in an argon or hydrogen-argon mixed gas atmosphere, the micron rod-shaped iron-silicon-aluminum-based composite electromagnetic wave-absorbing material is prepared, the shape anisotropy and the magnetic conductivity of FeSiAl are effectively improved, the oxygen vacancy concentration of TiO2 is regulated and controlled through annealing in a hydrogen-argon mixed gas reducing atmosphere, the polarization relaxation of dipoles is enhanced, and the electromagnetic wave-absorbing effect is improved. The core-shell structure enhances interface polarization, improves magnetic loss and dielectric loss, and effectively enhances the wave-absorbing bandwidth and reflection loss of the wave-absorbing material.

The invention provides a wide-axial-ratio circularly polarized antenna based on a four-feed annular dipole, and relates to the technical field of antennas. Comprising a bottom dielectric plate, and a feed network is printed on the upper surface of the bottom dielectric plate; the isolation plate is positioned above the bottom dielectric plate; the top dielectric plate is located above the isolation plate, and a coaxial cable is arranged between the top dielectric plate and the isolation plate; a radiation patch is printed on the lower surface of the top dielectric plate, four metal patches are printed on the upper surface of the top dielectric plate, and the radiation patch is formed by surrounding four fan-shaped patches; the metal sheet covers the central position above the top dielectric plate; the metal ring is arranged outside the bottom dielectric plate and the top dielectric plate in a covering mode, the isolation plate, the coaxial cable, the radiation patch, the metal patch and the feed network are wrapped in the metal ring, and the technical problems that in the prior art, the axial ratio bandwidth of an antenna is narrow, and the 3dB axial ratio beam width is not large enough are solved.

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.

The invention discloses a continuous domain bound state sensor based on a composite prism all-dielectric metasurface, which is composed of periodically arranged unit structures, and each unit structure comprises a barium fluoride substrate layer and a group of silicon structure layers stacked on the barium fluoride substrate layer; the silicon structure layer comprises two first composite prisms arranged along a main diagonal line and two second composite prisms arranged along an auxiliary diagonal line, and the main diagonal line and the auxiliary diagonal line are in a crossed state; the tips of the two first composite prisms and the tips of the two second composite prisms are arranged in opposite directions, and the first composite prisms and the second composite prisms are of asymmetric structures; when polarized light is vertically incident, the resonance response of the ring dipole is excited, and two Fano formants are formed; the sensor has ultrahigh sensitivity and quality factor in a middle-infrared band, and can be applied to gas sensing and detection of various components of blood.

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.

The invention relates to a microwave signal amplifier comprising a chain of nonlinear inductive dipole elements each forming an asymmetric superconducting loop with Josephson junctions, said chain being arranged between an input of the chain for applying a signal to be amplified and an output of the chain at which an output signal is developed, the amplifier further comprising a controllable magnetic flux generation system for circulating a current in said loops, the amplifier further comprising a first microwave pump and means for coupling said input of the chain to the first pump, the first pump generating through the first coupling means a wave in the chain in the direction from the input to the output of frequency adjusted to transfer power at the frequency of the signal to be amplified.The device further comprises a second microwave pump and a second means for coupling said output of the chain to said second pump, the second pump generating through the second coupling means a wave in the chain in the direction from the output to the input, at a frequency different from that of the first pump and so as to attenuate in said direction from the output to the input the microwaves propagating at the frequency of the signal to be amplified. Figure for the abstract: Fig. 1.

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.

In some examples, a dual polarized dipole structure comprises a first dipole arm comprising a first dipole and a second dipole arm comprising a second dipole, the first and second dipoles being substantially planar and being joined to each other at a feed point of the dipole structure disposed at the centre of the first and second arms, whereby to form a dual polarized dipole radiating element for an antenna structure, wherein the first dipole arm and the second dipole arm are so arranged, with respect to a square unit cell, such that the first dipole and the second dipole are orthogonal to one another and so arranged as to lie on respective diagonals of the square unit cell.