公开(公告)号：US20240302417A1

公开(公告)日：2024-09-12

申请号：US18661564

申请日：2024-05-10

申请人： SHANGHAI JIAOTONG UNIVERSITY

发明人： Wei WU ,  Li LU ,  Jianghong WAN

IPC分类号： G01R27/04

CPC分类号： G01R27/04

摘要： A non-destructive measurement method and apparatus for the turn-to-turn resistivity distribution (TTRD) in non-insulation (NI) superconducting coils. The method includes: during the discharging or charging process, obtaining experimental values of voltage varying over preset time at different positions of the test coil; dividing the test coil into a plurality of measurement units and obtaining basic circuit elements; then constructing a preset equivalent circuit model including the basic circuit elements; based on the constructed equivalent circuit model, obtaining the first simulated values of voltage varying over preset time at different positions of the test coil; finally, determining the TTRD of the test coil based on the fitness value between experimental values and the first simulated values. When there is high fitness value between the first simulated values and experimental values, the TTRD corresponding to the first simulated values is considered as the TTRD within the test coil.

公开(公告)号：US20240241191A1

公开(公告)日：2024-07-18

申请号：US17997116

申请日：2022-07-22

申请人： NVIDIA CORPORATION

发明人： Yongwei CHEN ,  Baal YANG ,  Tibet ZHAO

IPC分类号： G01R31/58 ,  G01R1/067 ,  G01R27/04 ,  H01R24/40

CPC分类号： G01R31/58 ,  G01R1/06744 ,  G01R27/04 ,  H01R24/40

摘要： A system for testing multiple devices includes a connector holder having a plurality of holes, wherein each hole included in the plurality of holes is configured to hold a respective cable connector that connects to a cable; a device holder that is configured to hold a first device in a testing position; and an engagement mechanism that supports the connector holder and is operable to move the connector holder to an engaged position, wherein when the first device is being held by the device holder in the testing position, and a first hole included in the plurality of holes holds a first cable connector, a contact point associated with the first cable connector contacts a signal pad associated with the first device.

公开(公告)号：US20240142504A1

公开(公告)日：2024-05-02

申请号：US18373401

申请日：2023-09-27

申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.

发明人： Takeshi KAWASAKI

IPC分类号： G01R27/04 ,  G01R27/26

CPC分类号： G01R27/04 ,  G01R27/2623 ,  G01R31/2607

摘要： A calculation method includes acquiring N matrices corresponding to N sets, each of N matrices being a matrix of a circuit network including first and second terminals, each of N sets being a set of first voltage applied to first terminal and second voltage applied to second terminal, and extracting values of L parameters based on N matrices using a first model of an intrinsic circuit and a second model of a distributed constant circuit. First model is represented by a function of at least one of first voltage and second voltage, each of L/2 impedance elements includes first end connected to one of first to sixth terminals, and second end connected to terminal other than the one of first to sixth terminals, and second model is represented by values of L parameters including two real number parameters related to impedance of each of L/2 impedance elements.

公开(公告)号：US11852596B2

公开(公告)日：2023-12-26

申请号：US18085710

申请日：2022-12-21

申请人： Boulder Environmental Sciences and Technology

发明人： Marian Klein

IPC分类号： G01R27/04 ,  G01R27/32 ,  G01N22/04 ,  G01K11/00 ,  G01V3/17 ,  G01N22/00 ,  G01N33/28 ,  G01R25/04 ,  G01R27/22

CPC分类号： G01N22/04 ,  G01K11/006 ,  G01N22/00 ,  G01N33/2823 ,  G01V3/17 ,  G01R25/04 ,  G01R27/04 ,  G01R27/22

摘要： A system for passive microwave remote sensing using at least one microwave radiometer includes a fixed body portion, the fixed body portion being configured to attach to a mobile platform, and a mobile body portion, the mobile body portion being configured for rotatably coupling with the fixed body portion for rotation about a rotation axis. The mobile body portion is configured for supporting the at least one microwave radiometer therein such that the at least one microwave radiometer rotates about the rotation axis when the mobile body portion is rotated about the rotation axis such that a polarization axis of the at least one radiometer is aligned with an earth axis. The fixed body portion includes a motor mechanism for effecting rotation of the mobile body portion such that the at least one microwave radiometer provides a vertical scanning below and above the mobile platform.

公开(公告)号：US11802843B1

公开(公告)日：2023-10-31

申请号：US17866017

申请日：2022-07-15

申请人： Know Labs, Inc.

发明人： Phillip Bosua

IPC分类号： G01R27/04 ,  G01R27/32 ,  G01N22/00 ,  G01N35/00 ,  G01N22/02 ,  G01R27/28 ,  G01R35/00 ,  G01N22/04

CPC分类号： G01N22/00 ,  G01N22/02 ,  G01N35/00871 ,  G01N22/04 ,  G01R27/28 ,  G01R27/32 ,  G01R35/005

摘要： A method of operating a sensor system for detecting one or more analytes in a target includes preparing for an analyte scan of the target, generating an analyte scan that includes one or more frequencies in a radio or microwave range of the electromagnetic spectrum, and controlling a non-invasive sensor to implement the analyte scan of the target using. One or more of implementing a warm-up preparatory scan and/or detecting for external signal interference and the analyte scan being generated based on the detection for the external signal interference. A sensor system includes a non-invasive sensor and a controller for the non-invasive sensor. A sensor system includes a non-invasive sensor and one or more auxiliary sensors communicatively connected to the non-invasive sensor.

公开(公告)号：US11671186B1

公开(公告)日：2023-06-06

申请号：US17687288

申请日：2022-03-04

申请人： Rohde & Schwarz GmbH & Co. KG

发明人： Benoit Derat

IPC分类号： G01R27/04 ,  H04B17/00

CPC分类号： H04B17/0085

摘要： A method of determining an equivalent source associated with a device under test by an over-the-air test (OTA) test system is described. The OTA test system includes an analysis circuit and at least one measurement antenna. The method includes the steps of: conducting, by the at least one measurement antenna, at least two sets of measurements of electromagnetic waves emitted by the device under test, thereby generating measurement signals associated with the electromagnetic waves; determining, by the analysis circuit, at least one radiation parameter of the device under test based on the measurement signals, wherein the at least one radiation parameter is associated with the electromagnetic waves emitted by the device under test; and determining, by the analysis circuit, an equivalent source on a Huygens surface based on the at least one determined radiation parameter, wherein the equivalent source is associated with the device under test. The at least two sets of measurements are conducted on at least two measurement surfaces, wherein the at least two measurement surfaces are different from each other. Further, an OTA test system is described.

公开(公告)号：US11639902B1

公开(公告)日：2023-05-02

申请号：US17560304

申请日：2021-12-23

申请人： NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY

发明人： Chia-Ting Lin ,  Jian-Long Ruan

IPC分类号： G01R27/04 ,  G01R27/32 ,  G01N22/00 ,  G01R27/02 ,  G01R29/08 ,  G01F23/284 ,  G01F23/263 ,  G01F25/20

摘要： A method of evaluating microwave characteristics includes the steps of: (A) measuring thermal diffusion features and microwave characteristics of at least three mode samples to obtain at least three data points, wherein the mode samples include identical constituents but at different ratios thereof; (B) obtaining a mathematical relation between the data points by linear regression; (C) measuring a thermal diffusion feature of a sample under test, wherein the sample under test and the mode samples include identical constituents; and (D) substituting the thermal diffusion feature of the sample under test into the mathematical relation to evaluate a microwave characteristic of the sample under test. The method is applicable to a ceramic material to evaluate microwave characteristics of the ceramic material.

公开(公告)号：US11567015B2

公开(公告)日：2023-01-31

申请号：US17138268

申请日：2020-12-30

申请人： Boulder Environmental Sciences and Technology

发明人： Marian Klein

IPC分类号： G01R27/02 ,  G01R27/32 ,  G01N22/04 ,  G01K11/00 ,  G01V3/17 ,  G01N22/00 ,  G01N33/28 ,  G01R27/04 ,  G01R25/04 ,  G01R27/22

摘要： A system for passive microwave remote sensing using at least one microwave radiometer includes a fixed body portion and a mobile body portion. The mobile body portion is configured for rotatably coupling with the fixed body portion for rotation about a rotation axis. The mobile body portion is configured for supporting the microwave radiometer therein such that the microwave radiometer rotates about the rotation axis when the mobile body portion is rotated about the rotation axis such that a polarization axis of the radiometer is aligned with an earth axis. The fixed body portion includes a motor mechanism for effecting rotation of the mobile body portion. In an embodiment, the mobile body portion includes a plurality of body section, each body section being configured for supporting a microwave radiometer therein. In another embodiment, each one of the plurality of body sections is configured to be interchangeably coupled with each other.

公开(公告)号：US11543280B2

公开(公告)日：2023-01-03

申请号：US16507672

申请日：2019-07-10

申请人： Magnetrol International, Incorporated

发明人： Paul G. Janitch

IPC分类号： G01R31/00 ,  G01R27/04 ,  G01N22/00 ,  G01N22/04 ,  G01F23/284 ,  G01S7/02 ,  G01R1/07 ,  G05D9/00 ,  G01R27/02 ,  G01R1/067

摘要： There is disclosed a probe used with a measurement instrument including a pulse circuit for generating pulses. A coaxial connector is secured to the probe case so that the probe case is electrically connected to the ground shield. A center rod has a top end received in the probe case and to extend into a process liquid. The center rod is electrically connected to the center terminal for conducting the pulses. Ground rods are spaced around the center rod and are secured to the probe case. The probe provides an open configuration less susceptible to build-up between the center rod and the ground rods. One or more of the ground rods may by tubes, connected to a flushing port, with nozzles for cleaning the enter rod. Another ground rod may be tubular for carrying a conductor connected to a bottom of the center rod for bottom-up measurement.

公开(公告)号：US11169097B2

公开(公告)日：2021-11-09

申请号：US16725360

申请日：2019-12-23

申请人： NEW YORK UNIVERSITY

发明人： Daniel K. Sodickson ,  Martijn Anton Hendrik Cloos

IPC分类号： G01R27/04 ,  G01R27/32 ,  G01N22/00 ,  G01N27/02 ,  G01N22/04 ,  G01N29/02 ,  A61B5/00

摘要： An apparatus for non-destructive testing of a sample includes a sample holder configured to contain or support the sample; an exciter configured to generate an oscillating electromagnetic field across the sample that operates with at least one predetermined excitation frequency; a receiver configured to detect harmonic electromagnetic signals resulting from induced electromagnetic fields oscillating with at least one frequency that is not equal to the at least one predetermined excitation frequency; a recorder configured to record the harmonic electromagnetic signals; and a processor programmed to construct an induced harmonic electromagnetic spectrum based on the harmonic electromagnetic signals.