729 results about "Dipole" patented technology

The invention relates to a miniaturized millimeter wave filtering magnetoelectric dipole antenna with high out-of-band rejection, and relates to the technical field of communication antennae, and the miniaturized millimeter wave filtering magnetoelectric dipole antenna with the high out-of-band rejection effect comprises a strip line feed structure which is used for generating a lower stop band radiation zero point; the n-shaped feed structure is used for feeding the magnetoelectric dipole; according to the magnetoelectric dipole radiator, a U-shaped groove is etched in a dipole patch, so that the size of the antenna is reduced; the parasitic metal strips are used for enhancing the radiation suppression effect of the upper stop band; the folding split rings are folded to reduce the size of the split rings and enhance the radiation suppression effect of the lower stop band at the same time; the inverted L-shaped short circuit branch is used for enhancing the radiation suppression effect of the upper stop band, the absolute bandwidth of the antenna is 21.1 GHz to 31.0 GHz, the relative bandwidth is 37.0%, the lowest gain is 5.0 dBi, the highest gain can reach 7.8 dBi, the suppression level from the in-band highest gain to the radiation zero point of the upper stop band is larger than 40 dBi, and the suppression level from the in-band highest gain to the radiation zero point of the lower stop band is larger than 50.0 dBi.

An antenna, in particular for a mobile communication cell site, comprises at least one radiator and a radiator feed being electrically coupled to the at least one radiator, the radiator being a dual polarized dipole radiator, wherein each dipole is formed of two dipole arms and the dipoles are in a crossed arrangement relative to each other, wherein the radiator feed comprises a respective feed line for each polarized dipole and extends within a single feed plane between the dipole arms intersecting the dipoles in the region of the crossing. Further, a cell site comprising such antenna is shown.

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.

The invention discloses a strongly-coupled dual-polarized ultra-wideband phased-array antenna based on fishbone-shaped gap loading and a development method of the strongly-coupled dual-polarized ultra-wideband phased-array antenna. A series of fishbone-shaped gaps with different sizes and intervals are formed in the dipole, a traditional cross-shaped dipole is improved, and the working bandwidth of the antenna is expanded. Resistive loading of a traditional ultra-wideband array is not used, and the radiation efficiency is improved. The feed structure of the power divider and the double-balun is applied, so that better matching can be realized, and the profile height of the antenna is reduced. The whole antenna array adopts the light and thin dielectric substrate, a thick and heavy wide-angle impedance matching layer is omitted, and the weight is lighter. + / -45-degree scanning can be achieved within the frequency band of 0.25-1.85 GHz, and the overall height of the antenna is 0.054 times of the low-frequency wavelength.

The present invention relates to the technical field of photoelectric devices, in particular to a self-assembled monomolecular layer material based on a conjugated linker group, a preparation method therefor, and a solar cell. The chemical structural general formula of said self-assembled monomolecular layer material is shown as (1), wherein an electron donor is one of electron-rich groups and derivatives thereof, and L is a conjugated linker group. The introduction of the conjugated linker group into the self-assembled monomolecular layer material to replace a non-conjugated alkyl linker group can effectively achieve electron delocalization, thereby enhancing the intrinsic stability and hole extraction and transport capability of molecules in monomolecular self-assembled layers. In addition, the rigid structure thereof remarkably improves the degree of order and the density of molecular arrangement of monomolecular self-assembled layers. Moreover, the self-assembled monomolecular layer material can form dense monomolecular self-assembled layers on the surfaces of conductive substrates, thereby improving interface contact and passivating interface defects; and said material can form dipoles on the surfaces of the conductive substrates, thereby improving the surface work function and promoting hole transport.

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 dragging type land multi-channel direct-current resistivity exploration system which comprises a mobile platform and a plurality of dragging type electrodes connected with the mobile platform. The dragging type electrodes comprise two power supply electrodes and at least one group of exploration electrodes, the exploration electrodes and the power supply electrodes are arranged in a dipole-dipole device, all the dragging type electrodes are in dragging connection with the mobile platform according to a fixed arrangement interval, and all the dragging type electrodes are driven by the mobile platform to integrally move and drag on the exploration ground; all the dragging type electrodes are electrically connected with a multi-channel direct-current resistivity acquisition host arranged on the mobile platform through a multi-channel large cable; and the active water supply device is used for improving the electric conductivity between the dragging type electrode and the exploration ground. By adopting the design of the active water supply device and the dragging type electrode, non-driven type electrode power supply and potential measurement on flat grounds such as land dams and roads are realized, and the problem of low data acquisition efficiency of a traditional high-density resistivity method is effectively improved.

The invention relates to the technical field of single molecule devices, in particular to a probability bit device based on single tetraligand molecule dipole moment and a preparation method, a single tetraligand dipole molecule is assembled between a graphene point electrode pair, the single tetraligand dipole molecule has good randomness or uncertainty characteristics, and the probability bit device can be used for preparing a probabilistic bit device based on the single tetraligand molecule dipole moment. The states of the molecules can be read through conductance, and probability bits of a single molecule scale are realized; according to the invention, the linear mapping relation between the bistable time ratio and the bias voltage parameter is established by using the voltage dependence of molecular dipole inversion, the random generation mode of the traditional probability bit is broken through, the molecular configuration dynamic state is used as the core regulation dimension, and the characteristics of high-sensitivity field response and long-time coherence are integrated. And an efficient and extensible hardware carrier is provided for quantum-classical hybrid calculation. The preparation method provided by the invention is simple in process, mild in reaction condition and beneficial to large-scale production.

The invention discloses a compact broadband wide-beam dipole antenna array based on a high-order mode, which comprises two sub-arrays, the two sub-arrays share a dielectric substrate of which the upper surface and the lower surface are partially coated with copper, the equal-amplitude feed is carried out through a one-to-two power division feed structure, the two sub-arrays are bilaterally symmetrical about the central axis of the dielectric substrate, and the upper surface and the lower surface of the dielectric substrate are partially coated with copper. Each sub-array comprises a substrate integrated waveguide cavity and a plurality of pairs of side-by-side dipoles which are connected through a grounding coplanar waveguide, the substrate integrated waveguide cavity is formed by arranging metalized via holes at equal intervals and works in a TE510 high-order mode, the dipoles are placed in the center of the periphery of each electric field loop of the substrate integrated waveguide cavity, and the ground coplanar waveguide is connected with the substrate integrated waveguide cavity. High directivity of an H plane and unilateral radiation with 3dB beam width of an E plane can be obtained by placing the radiation arms of the dipoles according to a radiation field superposition and cancellation rule. The problems that an existing wide-beam antenna is complex in structure, and the technical scheme is difficult to achieve are solved.

The invention discloses a resistor-loaded double-layer electric connection rotary symmetrical oscillator ultra-wideband antenna. The antenna comprises a dielectric substrate, a double-layer rotary symmetrical oscillator, a pair of metal through holes and a chip resistor. Wherein the double-layer rotationally symmetrical oscillator comprises a front radiation arm 1, a front radiation arm 2, a back radiation arm 3 and a back radiation arm 4, and each radiation arm is composed of a planar trapezoidal gradual change structure, a planar rectangular structure and a rotationally symmetrical tail end branch knot loading structure; the double-layer rotary symmetrical dipoles are connected through a pair of metal via holes, the planar resistor is loaded at a gap between the back radiation arms 3 and 4, and the feeding point is located at a gap between the front radiation arms 1 and 2. The antenna has the performance characteristics of ultra wide band and omnidirectional radiation, has the structural characteristics of ultra narrow size and ultra low profile, and is suitable for communication application scenes with limited space.

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 utility model discloses a novel low-frequency radiation unit, which comprises a base and four groups of balun arms arranged in pairs, the four groups of balun arms are arranged on the base in an annular array, and each group of balun arms is connected with a dipole formed by two radiation arms to form a certain polarized radiator; the antenna further comprises a plurality of first coupling structures, a plurality of second coupling structures and a plurality of feed structures, the number of the first coupling structures, the number of the second coupling structures and the number of the feed structures are equal to the number of the dipoles, the two adjacent radiation arms belonging to the same dipole are connected through the first coupling structures, and the two adjacent radiation arms belonging to the same dipole are connected through the second coupling structures. The two adjacent radiation arms which do not belong to the same dipole are connected through a second coupling structure, and the two balun arms in each group are connected through a feed structure. The utility model has the advantages that the installation is convenient, the installation cost is reduced, and the broadband of directional diagrams and S parameters is realized.

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 multi-band base station antenna comprises: a reflector; a plurality of high-band radiators arranged on the reflector; and a plurality of low-band radiators arranged on the reflector. Each of the plurality of low-band radiators comprises: a radiation substrate; a first dipole radiator including a first+dipole arm and a first−dipole arm formed on the radiation substrate; a second dipole radiator including a second+dipole arm and a second−dipole arm formed on the radiation substrate; and a metal coupler coupled to the lower portion of the radiation substrate. The metal coupler comprises: a first coupling patch located below the first+dipole arm; a second coupling patch located below the first−dipole arm; a third coupling patch located below the second+dipole arm; and a fourth coupling patch located below the second−dipole arm.

An antenna array has two columns of dipoles that are configured to radiate distinct signals. The top and bottom row of dipoles have a coupler that splits the power of each column such that each of the two dipoles at top and bottom radiate in both signals at a given power split ratio. The coupler provides for phase compensation so that the two radiated signals are phase aligned across the top and bottom row. Having the power shared at the top and bottom rows shifts the phase center away from the edge of the ground plane of the antenna's reflector. The coupler is configured so that its coupling efficiency is greatest at the lowest frequency and least at its highest frequency. This improves the performance of the antenna array in the low frequencies while preserving antenna diversity between the two radiated signals.

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.

The invention provides a dual-band oblique polarization common-caliber array antenna based on a tight coupling effect. The dual-band oblique polarization common-caliber array antenna comprises a dielectric substrate, a low-frequency antenna, a high-frequency antenna and a metal floor which are perpendicular to one another, the low-frequency antenna comprises a low-frequency modification dipole, a low-frequency feed balun and a low-frequency metal wide-angle impedance matching layer, and the high-frequency antenna comprises a high-frequency modification dipole, a high-frequency feed balun and a high-frequency metal wide-angle impedance matching layer. The design of the common-caliber array antenna is realized in a mode that the dual-band antenna is vertically inserted and the metal floor is shared. The antenna has the advantages of ultra wide band, beam scanning and oblique polarization, and can be used for broadband radar wireless communication.

A semiconductor structure includes a substrate, a first transistor disposed over the substrate and including a first channel, a first interfacial layer over the first channel, a first gate dielectric layer over the first interfacial layer, and a first gate electrode layer over the first gate dielectric layer, and a second transistor disposed over the substrate and including a second channel, a second interfacial layer over the second channel, a second gate dielectric layer over the second interfacial layer, and a second gate electrode layer over the second gate dielectric layer. The first gate dielectric layer includes a first dipole material composition having a first maximum concentration at a half-thickness line of the first gate dielectric layer. The second gate dielectric layer includes a second dipole material composition having a second maximum concentration at a half-thickness line of the second gate dielectric layer and greater than the first maximum concentration.

The invention belongs to the technical field of piezoelectric ceramics, and discloses a lead-free piezoelectric ceramic and a preparation method thereof. The general formula of the lead-free piezoelectric ceramic is 0.95 (K < 0.48 > Na < 0.52 >) NbO < 3-0.05 > (Bi < 0.5 > Na < 0.5 >) HfO < 3-0.002 > Fe < 2 > O < 3-x > CuO, wherein x is greater than or equal to 0.005 and less than or equal to 0.015. On the basis of constructing an orthogonal-tetragonal phase boundary (O-T phase boundary), CuO is introduced for doping, and by controlling the doping amount, not only can a defect dipole be introduced, but also multi-phase coexistence can be maintained, and a nano-scale domain can be increased. Multi-phase coexistence and a nano-scale domain ensure a relatively low polarization potential barrier, so that a high-voltage coefficient is maintained; the defect dipole can effectively inhibit domain wall movement and reduce loss; and the mechanical quality factor is obviously improved while the piezoelectric coefficient is kept at a relatively high level.

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 box dipole radiating element includes first, second, third and fourth pairs of support stalks, and a box-shaped radiator attached to the first through fourth pairs of support stalks. The box-shaped radiator has first through fourth sides including respective first through fourth radiating arms that are configured to provide generally serpentine-shaped paths for radiation currents in first through fourth vertical planes, which are aligned with the radiating arms and intersect at corners of the box-shaped radiator.

A system may include a loop antenna and a dipole antenna that includes at least two dipole arms. Each of the at least two dipole arms may be electrically connected to the loop antenna. Within the system, the loop antenna may be a balun for the dipole antenna. In some cases, the electrical connection between the loop antenna and the arms of the dipole antenna may create a combined loop-dipole, dual-wideband antenna. The combined antenna may be tunable using a tuner that is electrically connected to the combined antenna. Various other mobile electronic devices, apparatuses, and methods of manufacturing are also disclosed.

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.

The invention provides a preparation method of a hydrogenated cycloolefin polymer, which comprises the following steps: reacting a cycloolefin polymer with hydrogen in the presence of a hydrogenation catalyst and a hydrogenation aid to obtain the hydrogenated cycloolefin polymer, the hydrogenation auxiliary agent is selected from one or more of aliphatic dibasic acid esters, phthalate esters and benzene polyacid esters. Compared with the prior art, in the presence of the hydrogenation catalyst and the hydrogenation auxiliary agent, the cycloolefin polymer and the hydrogen are subjected to hydrogenation reaction, and an induced dipole is induced in the adjacent cycloolefin polymer through the hydrogenation auxiliary agent molecule with an inherent dipole; the molecular attraction between the induced dipole and the inherent dipole destroys the entanglement of the original molecular chain, and the friction force between the cycloolefin polymer molecules is reduced, so that the viscosity between the polymers is reduced, and the mass transfer effect of the reaction is improved; meanwhile, intramolecular electron conjugation can be inhibited, double bonds in molecules in the hydrogenation process can be damaged more easily, the hydrogenation efficiency is improved, and then the production efficiency is improved.

The invention discloses a piezoelectric film for underwater sound wave detection and a preparation method and application thereof, and relates to the field of composite piezoelectric materials and transducers. The piezoelectric film material comprises poly (vinylidene fluoride-trifluoroethylene) (PVDF-TrFE) and nano zinc sulfide spheres, PVDF-TrFE is a substrate, zinc sulfide is uniformly distributed in the polymer substrate as an inorganic nano filler, the zinc sulfide spheres can serve as a stress transfer medium, and nano zinc sulfide with rough surface and negative charges serves as a crystallization site, so that the piezoelectric film material can be used as a stress transfer medium. The crystalline degree of PVDF-TrFE is improved, the crystalline phase in PVDF-TrFE tends to an all-trans beta phase through interaction with a hydrocarbon dipole, the problem that the organic piezoelectric material is poor in piezoelectric property is solved, the piezoelectric effect and stress transfer mechanisms are matched with a solution pouring preparation process, and the piezoelectric property of the organic piezoelectric material is improved. The composite piezoelectric film has the characteristics of large-area preparation, high flexibility, high sensitivity and the like, and is suitable for underwater sound wave detection.

The invention provides a tunnel drilling sound wave emission acoustic system structure and a working method thereof.The tunnel drilling sound wave emission acoustic system structure comprises an emission dipole, an emission monopole, an integrated circuit structure, a walking encoder, a gyroscope and an emission skeleton assembly, the emission skeleton assembly is provided with a containing cavity, and the emission dipole, the walking encoder, the gyroscope and the emission monopole are arranged in the containing cavity; the transmitting dipole is used for transmitting two directional sound waves, and two sound wave channels are perpendicular to each other; the emission monopole uniformly emits sound waves to the periphery of a drill hole in all directions; the integrated circuit structure is used for controlling the transmitting dipole and the transmitting monopole to transmit different types of sound waves; the walking encoder is used for recording the moving speed of the structure body in the drill hole so as to calculate the position of the structure body in the drill hole at each moment; the gyroscope is used for recording the pointing direction of the structure body so as to obtain the azimuth angle of the geologic body. The structure is ingenious, and the detection range can be widened.

The invention provides a millimeter wave phased-array antenna of a pure metal dipole and a packaging process of the millimeter wave phased-array antenna. The millimeter wave phased array antenna mainly solves the problems that a traditional millimeter wave phased array antenna is high in complexity, angle scanning of the antenna is limited, antenna packaging efficiency is low, and machining difficulty is large. According to the invention, a pure metal dipole antenna structure is adopted to complete an antenna radiation function, and metal walls are arranged at the periphery of the antenna, so that the influence of mutual radiation between antenna dipoles is avoided. The millimeter wave antenna array is integrally packaged and integrated on an Al2O3 ceramic packaging structure, and connection and packaging of the millimeter wave phased array antenna and the chip assembly are realized through a single-layer ceramic packaging layer. The antenna provided by the invention has the advantages of simpler structure, wide-angle scanning, low loss of a packaging process and high efficiency. The method can be used for realizing a high-integration and miniaturized millimeter wave packaging phased-array antenna.