57 results about "Permittivity" patented technology

A semiconductor device includes: a filter circuit including: a resistor; a MOS capacitor; and a MOM capacitor stacked on at least one of the resistor or the MOS capacitor, wherein the following inequalities are satisfied:Mc≥β−γ / β+γ×Mr Mr≤√{square root over (1 / 2πftαβ)}  [Math. 1]where ft denotes a cutoff frequency of the filter circuit, Mr denotes a resistor area of a resistor-provided region in which the resistor is provided, Mc denotes a MOS capacitor area of a MOS capacitor-provided region in which the MOS capacitor is provided, α denotes a resistivity of the resistor, β denotes a MOS capacitance rate of the MOS capacitor, and γ denotes a MOM capacitance rate of the MOM capacitor.

A method includes introducing a first material component having a first permittivity and a second material component having a second permittivity to a mixing unit. The first and second material components are advanced through the mixing unit at a mixing ratio to form a material component mixture that is dispensed from the mixing unit. A third permittivity of the material component mixture, which is related to the first permittivity, the second permittivity, and the mixing ratio, is determined. The third permittivity is compared to a predetermined permittivity, which is related to the first permittivity, the second permittivity, and a predetermined mixing ratio. If the third permittivity differs from the predetermined permittivity by a threshold limit or more than the threshold limit, a corrective response is generated.

A surface acoustic wave resonator comprising a multilayer piezoelectric substrate including a layer of piezoelectric material, and interdigital transducer (IDT) electrodes disposed on the layer of piezoelectric material, the IDT electrodes including a first and second bus bars, a first plurality of electrode fingers extending from the first bus bar toward the second bus bar, and a second plurality of electrode fingers extending from the second bus bar toward the first bus bar and interleaved with the first plurality of electrode fingers in a central region of the resonator, gap regions defined between tips of the first plurality of electrode fingers and the second bus bar and between tips of the second plurality of electrode fingers and the first bus bar, regions of piezoelectric material forming the layer of piezoelectric material in the gap regions having a lesser permittivity and / or piezoelectricity than the piezoelectric material in the central regions.

The present disclosure relates to the technical field of thin film material performance detection, and provides a method and system for testing complex permittivity of epitaxial thin film material in a terahertz frequency band, which comprises the following steps: performing transmission type testing on different transmission regions obtained by dividing a to-be-tested epitaxial thin film material sample and air, to obtain a time-domain waveform of a terahertz pulse transmission electric field; performing Fourier transform on the obtained time-domain waveform to obtain an amplitude spectrum and a phase spectrum of the electric field; calculating a complex refractive index of a substrate material according to the amplitude spectrum and the phase spectrum; constructing a transmission and reflection model for the substrate plus the epitaxial thin film material by taking into account multiple reflections inside the substrate material; obtaining a relationship between the complex permittivity of the epitaxial thin film material and the complex refractive index of the substrate material based on the transmission and reflection model, and inversely calculating the complex permittivity of the epitaxial thin film material. In the process of testing the complex permittivity of the epitaxial thin film material, the testing error introduced by multiple reflections inside the substrate material is taken into account, thereby improving the testing accuracy of the complex permittivity of the material.

Electric fields are used to determine electrical characteristics of an object, such as permittivity. A dielectric substrate (101, figure 1) has first and second surfaces, with a first set 116, 117, 11

This in-waveguide metasurface-structured antenna comprises: a waveguide which has an opening at an end thereof, and of which the width of the rectangular or circular perimeter gradually decreases from the end thereof; and a metamaterial antenna which has a 3D stacked structure, is provided inside the waveguide, and has negative (-) permittivity and permeability in a particular frequency band.

A semiconductor chip device includes a substrate with a first dielectric material of a first permittivity value. A power input line and ground line are positioned in the substrate and arranged to form a decoupling capacitor. A region of the substrate in between the power input line and the ground line is doped with a second dielectric material of a second permittivity value that is higher than the first permittivity value. The region doped with the second dielectric material lacks a signal body. By incorporating a region with higher permittivity, in what is generally unused space for power delivery, the region becomes a decoupling capacitor for nearby power delivery elements. By adding decoupling capacitance to the previously unused space, noise in a circuit is more easily controlled and the chip device becomes more reliable.

The application discloses a physical neural network-based electrical property tomography method, which spatially obtains permittivity and conductivity of all points through four steps.The application does not need to simplify the core equation of MR-EPT to solve, and does not need to use a numerical method to solve by discretizing the derivative of the dielectric property in space, thereby avoiding the discretization error, so that the application has higher precision in obtaining the permittivity and the conductivity.The physical neural network-based electrical property tomography method uses a neural network to construct a mapping relationship between a transmit field and its spatial derivative and electrical properties, so that the precision of the obtained result is higher.

A detection device includes an electromagnetic wave transmitter, configured to emit an electromagnetic wave signal; a beam splitter, positioned in an transmission path of the electromagnetic wave signal, configured to divide the electromagnetic wave signal into a first electromagnetic wave signal and a second electromagnetic wave signal; an adjustable delay line, placed in an transmission path of the first electromagnetic wave signal, configured to adjust a path of the first electromagnetic wave signal; a sample holder, positioned in an transmission path of the second electromagnetic wave signal, configured to hold a sample to be tested; and an electromagnetic wave receiver, configured to receive the first electromagnetic wave signal passing through the adjustable delay line and the second electromagnetic wave signal passing through the sample holder, to generating an interference signal.

The present disclosure provides a protective enclosure for electronic systems integrating two key components: a preconfigurable polymer matrix and a tunable metamaterial. The polymer matrix forms a lightweight, structurally robust foundation with excellent mechanical properties and design flexibility, configurable for specific application requirements. Integrated within this matrix is a highly adaptable metamaterial system, precisely tunable to interact with electromagnetic energy in customized ways. By adjusting its permittivity and permeability, the metamaterial can selectively repel or absorb specific frequencies of electromagnetic radiation, allowing targeted shielding against harmful interference while permitting desired communication signals to pass through. This integration overcomes limitations of traditional electromagnetic shielding approaches, offering enhanced design flexibility and customization for various electronic applications. The use of carbon nanoparticles enables fine-grained control over the metamaterial's electromagnetic properties, creating protective enclosures that effectively manage electromagnetic energy while remaining lightweight and mechanically robust.

A metamaterial system comprises a metamaterial having a multiplicity of structures made of a first material distributed to form a periodic pattern within a bulk made of a second material. One of the first and the second materials is metallic and the other one of the first and the second materials is dielectric. The system optionally and preferably comprises a magnetic field source forming a magnetic field within the metamaterial, wherein the magnetic field is selected to ensure that an electrical permittivity of the metamaterial is negative.

The disclosure relates to a sensor for a quantity of a medium, such as the permittivity of the medium. This sensor comprises at least one sensitive element capable of: injecting waves, the injection being controlled by the application of an input signal, and collecting received waves, perturbed by physical properties of the medium related to said quantity, to form an output signal having, with respect to the input signal, a modulation from which a measurand indicative of said quantity of the medium is determined. The sensor also comprises a control unit capable of generating said input signal with a wave frequency to be injected corresponding to a chosen excitation frequency, and a processing unit applying a demodulation of the output signal to determine the corresponding measurand. In particular, the processing unit is configured to cooperate with the control unit to generate the input signal.The excitation frequency is adjusted according to the input and output signals using a feedback loop within the processing unit. This maintains a linear response of the output signal over a range of measurands by continuously adjusting the excitation frequency. The feedback loop is thus configured to ensure constant sensor sensitivity over this range. (See Figure 4 for an abstract diagram.)

A method to detect the presence and or concentration of an analyte in the environment of a spoof plasmon sensor having the steps of: providing a spoof plasmon sensor into an environment; interrogating said spoof plasmon sensor with an electromagnetic signal; collecting a modified electromagnetic signal from the spoof plasmon sensor; and analyzing the modified electromagnetic signal to detect an analyte in the environment of the sensor. A spoof plasmon sensor for detecting an analyte having a substrate with a superior surface; and a conductive material disposed on said superior surface, said conductive material defining a waveguide having a dual tapering shape, wherein said waveguide defines spoof plasmon cavities which are exposed substrate, where said substrate is configured to change in permittivity when contacted by an analyte.

Electric fields are used to determine electrical characteristics of an object, such as permittivity, by energising selected electrodes and monitoring remaining electrodes. A dielectric substrate (101,

A new LC medium exhibits a ferroelectric-nematic phase at ambient temperature. It comprises at least one or more compounds selected from each of the groups of formula IA, IB and IC-1 / IC-2 / IC-3, wherein the variable groups have the meanings indicated in the text and claims. The mixture can be used in electro-optics, electronics, electromechanics and other applications for materials with very high dielectric permittivity and other energy saving applications.

The invention relates to the technical field of harmonic suppression, and discloses a load harmonic suppression method and system for a remote micro-grid, and the method comprises the steps: analyzing the stator flux linkage data of a motor in the remote micro-grid to determine a filtering parameter and SVG reactive data, analyzing the SVG reactive data to obtain a DC side capacitor, and carrying out the electromagnetic torque simulation. Generating stator flux linkage response data and determining a response speed; determining permittivity parameters according to the direct-current side capacitance, and calculating a damping coefficient in combination with the response speed and a preset model; carrying out harmonic suppression processing on the voltage transient data based on the damping coefficient, and if the suppression effect does not reach the standard, decomposing the voltage transient data to optimize SVG impedance matching parameters; extracting an angle deviation in the voltage transient data to determine the switching frequency of the converter valve, further constructing an electromagnetic torque ripple response model to optimize SVG reactive data, and generating a load harmonic suppression strategy in combination with optimized filtering parameters and the switching frequency; and the voltage stability and the electric energy quality of the independent micro-grid in the remote area are improved.

The present disclosure provides a protective enclosure for electronic systems integrating two key components: a preconfigurable polymer matrix and a tunable metamaterial. The polymer matrix forms a lightweight, structurally robust foundation with excellent mechanical properties and design flexibility, configurable for specific application requirements. Integrated within this matrix is a highly adaptable metamaterial system, precisely tunable to interact with electromagnetic energy in customized ways. By adjusting its permittivity and permeability, the metamaterial can selectively repel or absorb specific frequencies of electromagnetic radiation, allowing targeted shielding against harmful interference while permitting desired communication signals to pass through. This integration overcomes limitations of traditional electromagnetic shielding approaches, offering enhanced design flexibility and customization for various electronic applications. The use of carbon nanoparticles enables fine-grained control over the metamaterial's electromagnetic properties, creating protective enclosures that effectively manage electromagnetic energy while remaining lightweight and mechanically robust.

An electrolyte additive for a lithium rechargeable battery, having a permittivity of 1.0 F / m or less and represented by the following formula 1 is provided:A is carbon or silicon, and R1 and R2 can be various substituted or unsubstituted alkyl, heteroalkyl, cyclic, or aryl groups. The compound can exhibit a LUMO of −0.6 eV or higher and a HOMO of −6.8 eV or higher. Also provided is an electrolyte containing the additive, a LIFSI salt, and a main solvent comprising either an ether or a fluorine-substituted sulfamoyl, in a ratio of about 0.99:0.01 to about 0.95:0.05. A lithium rechargeable battery incorporating this electrolyte together with positive and negative electrodes and a separator, demonstrates enhanced performance and stability.

There remains a need for a ferrite material with low magnetic loss, high permeability, and low permittivity and dielectric loss in the gigahertz range, and a method of making the ferrite material.SOLUTION: The polycrystalline ferrite composition is represented by the M5Me2Ti3Fe12O31 formula, wherein M is Ba2 +, Sr2 +, or a combination thereof; Me is Mg2 +, Zn2 +, Cu2 +, Co2 +, or a combination thereof; and has an average grain size of 1 micrometer to 100 micrometers. The composite comprises a polymer matrix and the polycrystalline ferrite composition described above. Methods of making the polycrystalline ferrite compositions and composites thereof are also disclosed.SELECTED DRAWING: None

The present invention provides an electrical property tomography method, system, device and medium based on instantaneous linearization, wherein the method includes: measuring a magnetic resonance radio frequency field, and calculating a transmission field based on the radio frequency field; calculating point data information of the transmission field using a numerical method; based on the transmission field and the point data information of the transmission field, according to the Maxwell equations, obtaining an initial value of the permittivity and an initial value of the conductivity at each point in space, and determining constraints K, R1 and R2 based on the initial value of the permittivity and the initial value of the conductivity; based on the transmission field, the point data information of the transmission field and the constraints K, R1 and R2, obtaining an iterative equation based on the Maxwell equations combined with the Newton iteration method; determining initial values ​​of the iterative equation based on the initial values ​​of the permittivity and the initial values ​​of the conductivity, substituting the initial values ​​into the iterative equation for iterative calculation, and obtaining the permittivity and conductivity at each point in space after several iterations; and outputting an electrical property tomography image based on the permittivity and conductivity at each point in space.

The invention is directed a fixation assembly for a medical lead providing better energy dissipation during MRI conditions. The fixation assembly comprises an elongated body extending between a distal end and a proximal end, wherein the fixation assembly further comprises at least one electrode and / or at least one radiopaque marker, wherein the elongated body comprises at least one energy dissipating element located in close proximity to the at least one radiopaque marker and / or the at least one electrode, wherein the material of the at least one energy dissipating element exhibits a permittivity that is equal to or greater than 4 F / m.

The present invention addresses the problem of providing a multilayer laminated film that transmits visible light in the front direction, is transparent, and has a near-infrared reflection function and a function of reflecting P-wave visible light in an inclined direction, and the present invention is a multilayer laminated film in which three or more types of resin layers are regularly arranged, when the permittivity of each layer at an energy loss of 2.5 eV measured by EELS is defined as a permittivity Xi (i = 1, 2, 3,...), and the layer A, the layer B, and the layer C are defined in this order from the layer having a large permittivity Xi, all of the following conditions (1)-(3) are satisfied. (1) The film has a repeating unit structure in which repeating units are laminated, the repeating units being arranged in the order of A layer / B layer / C layer / B layer. And (2) the repeating units having a total layer thickness of 250-630 nm in the repeating units account for 80-100% of the total repeating units. And (3) the A layer is a crystalline thermoplastic resin layer, and the B layer and the C layer are amorphous thermoplastic resin layers.

An electrolyte additive for a lithium rechargeable battery, preferably having a permittivity of 1.0 F / m or less and represented by the following formula 1 is provided: [Chemical Formula 1] R1n1-L1m1-A-L2m2-R2n2. The compound preferably can exhibit a LUMO of −0.6 eV or higher and a HOMO of −6.8 eV or higher. Also provided is an electrolyte containing the additive, a LIFSI salt, and a main solvent comprising either an ether or a fluorine-substituted sulfamoyl, in a ratio of about 0.99:0.01 to about 0.95:0.05. A lithium rechargeable battery incorporating this electrolyte together with positive and negative electrodes and a separator, demonstrates enhanced performance and stability.

A monitoring system monitors a presence or condition of a particular fluid in a device for storing or conducting the fluid using permittivity properties of the fluid. The system includes: the device for storing or conducting the fluid; a detector component being an integral part of the device and having a component body and a passive antenna deposited on a surface of the component body; and a reader device having a reader antenna. The reader device emits an electromagnetic output signal with a predefined output power and over a predefined frequency range via the reader antenna to the passive antenna and measures a reflected signal over the predefined frequency range, which is reflected from the passive antenna. The reader device also compares the reflected signal with at least one reference signal of at least one reference fluid to determine the presence or the condition of the particular fluid.

The application aims to provide a complex permittivity inversion correction method of a free space focusing system, and belongs to the technical field of microwave and millimeter wave material complex permittivity testing. The method decomposes a focusing beam into many uniform plane waves, and obtains a correction formula through superposition of reflection fields of each uniform plane wave component, thereby correcting model errors caused by deviation of the focusing beam radiated by an actual focusing system from the uniform plane wave, and improving the precision of the complex permittivity inversion model of the focusing beam system.

The application discloses a train interference analysis method and device and a storage medium, and relates to the field of train interference analysis. In the scheme, the complex permittivity under different frequencies is measured in advance to obtain a corresponding relationship between the complex permittivity and the frequency, so that when electromagnetic analysis is performed on the whole train, the target complex permittivity corresponding to the current simulation frequency in the corresponding relationship is used instead of the complex permittivity provided in the existing literature, thereby avoiding the problem that the cited complex permittivity cannot be verified. Furthermore, the accuracy of electromagnetic testing on the whole train is higher by using the pre-measured complex permittivity. In addition, when electromagnetic analysis is performed on the whole train in the application, an electromagnetic simulation model is established, which is an entity simulation model based on the vehicle body structure. Compared with the simplified electromagnetic model commonly used in the prior art, the simulation result obtained is closer to the actual application scenario, so that the reference significance of the simulation result is greater and the value is higher.

The invention relates to an antenna element (1) for an antenna array having a dielectric first antenna bar (3) and a dielectric second antenna bar (4), wherein a converter section (5) is formed in the antenna element (1), in which the first antenna bar (3) tapers in cross section in a longitudinal direction and the second antenna bar (4) is formed at a distance from the first antenna bar (3), forming a gap (6), and increases in cross section, and the gap (6) extending in the longitudinal direction has a gap medium with a lower permittivity than a permittivity of the first antenna bar (3) and of the second antenna bar (4), such that a mode of a signal coupled into the antenna element (1) is guided in the gap (6). In this way, a low-loss wideband antenna element is provided in which a propagation time of a signal is easily adjustable. The antenna element according to the invention can also be produced in a compact and cost-efficient manner and is easily integratable.

Method for determining a permittivity spectrum of a transmission line, the method comprising the steps of: Obtaining (301) a frequency reflectogram for a transmission line, Determining (303), from the frequency reflectogram, an estimate of the transfer function of the transmission line, Calculating (304, 305), from the phase of the transfer function, the real and / or imaginary part of a permittivity spectrum. Figure 3

Provided herein are electrohydrodynamic devices, systems, and methods configured to isolate of one or more particles of varying size and dielectric properties.

A system for analysis of a porous formation is disclosed. Such a system can provide electrical signals for one or more of the porous formation or a representation of the porous formation; can determine, using the electrical signals, permittivity and conductivity measures for the porous formation or the representation of the porous formation; and can model the permittivity and conductivity measures to generate a first estimation model associated with pore features for the porous formation, so that a downhole rock formation can be evaluated for pore connectivity, permeability, and Archie's texture parameters using estimation models.