公开(公告)号：US5654643A

公开(公告)日：1997-08-05

申请号：US320950

申请日：1994-10-11

Applicant: Friend K. Bechtel ,  James R. Allen ,  Daniel A. Uskoski

Inventor： Friend K. Bechtel ,  James R. Allen ,  Daniel A. Uskoski

IPC: G01N27/02 ,  G01N27/22 ,  G01N33/46 ,  G01R27/26

CPC classification number: G01N27/02 ,  G01N33/46 ,  G01R27/2641 ,  G01N27/221 ,  G01N27/223

Abstract: Method and apparatus are described for obtaining information about the real and imaginary parts of permittivity in dielectric materials and relating this information to other properties of the materials.

Abstract translation: 描述了用于获得关于电介质材料中的介电常数的实部和虚部的信息的方法和装置，并将该信息与材料的其它性质相关联。

公开(公告)号：US4791353A

公开(公告)日：1988-12-13

申请号：US85443

申请日：1987-08-14

Applicant: Pekka Typpo

Inventor： Pekka Typpo

IPC: G01B7/00 ,  G01B7/06 ,  G01N27/22 ,  G01N33/34 ,  G01R27/26

CPC classification number: G01R27/2641 ,  G01B7/087 ,  G01N27/223 ,  G01N33/346

Abstract: A combination caliper/moisture sensor in the form of a scanner in the cross-direction of sheet material being manufactured by a papermaking machine includes a pair of capacitive plates on opposite sides of the moving sheet material and in substantial contact with it which are utilized for measuring capacitance between the juxtaposed plates which are spaced in accordance with the caliper of the paper. Then a magnetic circuit which provides a flux path through the paper is utilized for measuring caliper which is the independent variable of the capacitance equation which, when solved, yields the dielectric constant. Since there is a known relationship between percent moisture and the dielectric constant, the percent moisture of the sheet material can be determined.

公开(公告)号：US3753099A

公开(公告)日：1973-08-14

申请号：US3753099D

申请日：1972-04-28

Applicant: HARCO ELECTR LTD

Inventor： KLEINBERG I ,  SETTLER M ,  GOLUB L ,  BORDEN S

IPC: A61B5/00 ,  A61B5/103 ,  G01N27/22 ,  G01N33/487 ,  G01R27/26

CPC classification number: G01R27/2641 ,  A61B5/1073 ,  A61B5/4283 ,  A61B5/4547 ,  G01N27/223

Abstract: A fixed and movable jaw form opposing plates of a capacitor with a paper strip carrying micro amounts of fluid being engaged between the jaws and acting as a dielectric whose characteristics (quality factor Q and relative dielectric constant Er) change depending upon the amount of fluid present on the paper between the jaws. This capacitor is connected with an electronic circuit which includes a digital readout meter. This meter reads the bias current on a transistor, the base of which is connected in circuit with the capacitor thus enabling the quantity of fluid present on the paper to be read out in microlitres.

Abstract translation: 固定和可移动的钳口形成电容器的相对板，带有携带微量流体的纸带在钳口之间接合并用作其特性（品质因子Q和相对介电常数Er）根据存在的流体的量而变化的电介质 在下颌之间的纸上。 该电容器与包括数字读出计的电子电路连接。 该仪表读取晶体管上的偏置电流，晶体管的基极与电容器连接在一起，因此能够以微升读出纸上存在的液体量。

公开(公告)号：US20240168071A1

公开(公告)日：2024-05-23

申请号：US18426359

申请日：2024-01-30

Applicant: EM labs, Inc.

Inventor： Yoshiyuki YANAGIMOTO ,  Atsushi HATTORI

IPC: G01R27/26

CPC classification number: G01R27/2658 ,  G01R27/2641

Abstract: In a dielectric characteristic measurement method, a step of mounting a sample of which dielectric characteristic is measured on an open resonator and adjusting a position of the sample includes: a first measurement step for performing a first resonance measurement by sweeping a predetermined sweep frequency range at a first number of measurement points; and a second and subsequent measurement steps for performing a plurality times of resonance measurement following the first resonance measurement, wherein each of the plurality times of resonance measurement is performed by sweeping a sweep frequency range specified based on an immediately preceding resonance measurement at a second number of the measurement points which is less than the first number of the measurement points, and the sweep frequency range of a second resonance measurement in the plurality times of resonance measurement is specified based on the first resonance measurement.

公开(公告)号：US20110140715A1

公开(公告)日：2011-06-16

申请号：US13030015

申请日：2011-02-17

Applicant: Jaehyun Kim ,  Arthur H. Sato ,  Keith Comendant ,  Qing Liu ,  Feiyang Wu

Inventor： Jaehyun Kim ,  Arthur H. Sato ,  Keith Comendant ,  Qing Liu ,  Feiyang Wu

IPC: G01R35/00

CPC classification number: G01R27/2641 ,  G01R27/2694 ,  G01R35/005

Abstract: A method is disclosed for calibrating a capacitance of an apparatus for measuring dielectric properties of a part. The apparatus includes an electrically grounded chamber, a lower electrode disposed within the chamber and connected to a radiofrequency (RF) transmission rod, an electrically grounded upper electrode disposed within the chamber above the lower electrode, and a variable capacitor connected to control transmission of RF power through the RF transmission rod to the lower electrode. A method is also disclosed for determining a capacitance of a part through use of the apparatus. A method is also disclosed for determining a dielectric constant of a part through use of the apparatus. A method is also disclosed for determining a loss tangent of a part through use of the apparatus.

Abstract translation: 公开了一种用于校准用于测量零件的介电特性的装置的电容的方法。 该设备包括电接地室，设置在室内的下电极并连接到射频（RF）传输杆，设置在下电极上方的室内的电接地上电极，以及连接到控制RF 通过RF传输杆向下电极供电。 还公开了一种通过使用该装置来确定零件的电容的方法。 还公开了一种通过使用该装置来确定部件的介电常数的方法。 还公开了一种通过使用该装置来确定零件的损耗角正切的方法。

公开(公告)号：US20070035313A1

公开(公告)日：2007-02-15

申请号：US11502177

申请日：2006-08-09

Applicant: Christoph Wuersch ,  Wilfried Kaneider ,  Harald Schmitzer

Inventor： Christoph Wuersch ,  Wilfried Kaneider ,  Harald Schmitzer

IPC: G01R27/26

CPC classification number: G01R27/2641 ,  G01V3/088 ,  G01V3/12 ,  G01V3/15

Abstract: A wall detector (1) for detecting an object (3) embedded in a substrate (2) includes a detection antenna (5) for introducing broadband, high-frequency alternating electric fields (9) of a measurement frequency (fM) in the substrate (2); a measurement system (6) connected to the detection antenna (5) for measuring the delayed interaction of the alternating fields (9) with the object (3), a calculation device (7) for detecting the object (3) based on the measurement signal and for determining the associated depth information, and a permittivity measurement device (8) with at least one auxiliary potential plate (11) for measuring the permittivity measurement signal of the substrate at a permittivity measurement frequency (fp) that is a lower than the measurement frequency; and an associated measurement method.

Abstract translation: 一种用于检测嵌入在基板（2）中的物体（3）的壁检测器（1），包括用于引入测量频率（f M）的宽带高频交变电场（9）的检测天线（5） ）; 连接到检测天线（5）的测量系统（6），用于测量交变场（9）与物体（3）的延迟相互作用;计算装置（7），用于基于测量 信号和用于确定相关联的深度信息的介电常数测量信号，以及具有至少一个辅助电位板（11）的介电常数测量装置（8），用于以介电常数测量频率（f SUB）测量衬底的介电常数测量信号 >）低于测量频率; 和相关的测量方法。

公开(公告)号：US5451866A

公开(公告)日：1995-09-19

申请号：US296825

申请日：1994-08-26

Applicant: William C. Drach ,  Thomas E. Koscica ,  Richard W. Babbitt

Inventor： William C. Drach ,  Thomas E. Koscica ,  Richard W. Babbitt

IPC: G01R27/26 ,  G01R31/02

CPC classification number: G01R27/2641

Abstract: A device for measuring the electrical characteristics of a ferromagnetic erial as a function of temperature, such as its dielectric constant verses temperature characteristics. The device having a quick mount fixture that utilizes a gravity feed and thermal grease to insure a quick reliable thermal connection between the temperature controller and the device under test (DUT). In addition, the device can be remotely controlled by a computer to automate the measuring procedure, thus reducing measuring time and alleviating the intensive manual procedure of making such measurements. Moreover, the device is easily mountable in a humidity-free or desiccation chamber to insure the measurements are reliable and accurate.

Abstract translation: 用于测量作为温度的函数的铁磁材料的电特性的装置，例如其介电常数与温度特性的关系。 该装置具有快速安装固定装置，其利用重力进料和导热油脂来确保温度控制器和被测设备（DUT）之间的快速可靠的热连接。 此外，该装置可以由计算机远程控制以自动化测量程序，从而减少测量时间并减轻进行此类测量的强化手动程序。 此外，该装置可以方便地安装在无湿度或干燥室中，以确保测量结果是可靠和准确的。

公开(公告)号：US5309110A

公开(公告)日：1994-05-03

申请号：US845994

申请日：1992-03-04

Applicant: Michael J. O'Neill ,  Kerry McKinley

Inventor： Michael J. O'Neill ,  Kerry McKinley

IPC: G01N27/22 ,  G01R27/02 ,  G01R27/26

CPC classification number: G01R27/2641

Abstract: An apparatus for analyzing the dielectric properties of a sample. A thin planar sample having a hole therein is positioned over two bottom electrodes having the hole over one of the bottom electrodes. An oscillator provides a first signal to one of the bottom electrodes and a second signal 180.degree. out of phase with the first signal to the second bottom electrode. A differential signal is obtained on the top electrode representative of the dielectric properties of the sample with the elimination of edge effects. A phase sensitive demodulator synchronized with the oscillator extracts the two components of the conductance and susceptance of the sample. A position sensor measures the thickness of the sample and is used to calculate the dielectric constant of the sample. Thereby, an accurate measurement of the dielectric properties of the sample is obtained without a complicated structure in order to eliminate edge effects.

Abstract translation: 用于分析样品的介电性质的装置。 其中具有孔的薄平面样品位于两个底部电极之间，该底部电极具有位于一个底部电极上的孔。 振荡器向第一底部电极提供第一信号，并将与第一信号180°异相的第二信号提供给第二底部电极。 在顶部电极上获得代表样品的介电特性并消除边缘效应的差分信号。 与振荡器同步的相敏解调器提取样品的电导和电纳的两个分量。 位置传感器测量样品的厚度，并用于计算样品的介电常数。 因此，为了消除边缘效应，获得样品的介电性能的精确测量而没有复杂的结构。

公开(公告)号：US3942107A

公开(公告)日：1976-03-02

申请号：US500799

申请日：1974-08-26

Applicant: Allen Robert Gerhard

Inventor： Allen Robert Gerhard

IPC: G01N22/00 ,  G01R17/04 ,  G01R27/26 ,  G01R27/06

CPC classification number: G01R27/2641 ,  G01N22/00 ,  G01R17/04

Abstract: In a non-destructive, production-oriented technique for measuring an electrical characteristic of a material, a first nonconductive flexible sheet having a first conductive pattern thereon is pressed against a portion of the surface of the material, and a second nonconductive flexible sheet having a second conductive pattern thereon is pressed against another portion of the surface of the material. An electrical signal is applied between the two patterns and the effect of the material on the signal is measured to obtain a desired electrical characteristic of the material. The method and apparatus are particularly useful for measuring, at microwave frequencies, the propogation velocity factor and dielectric constant of substrates for use in thin film microwave circuits. For such measurements, the first and second conductive patterns advantageously comprise a resonant circuit and a ground plane. The measurement is made by applying a swept frequency signal to the resonant circuit while simultaneously monitoring reflected power from the resonant circuit.

Abstract translation: 在用于测量材料的电特性的非破坏性的面向生产的技术中，其上具有第一导电图案的第一非导电柔性片被压在材料表面的一部分上，并且具有第二导电柔性片，其具有 其上的第二导电图案被压在材料的表面的另一部分上。 在两个图案之间施加电信号，并且测量材料对信号的影响，以获得材料的期望的电特性。 该方法和装置特别适用于在微波频率下测量用于薄膜微波电路的基板的传播速度因子和介电常数。 对于这种测量，第一和第二导电图案有利地包括谐振电路和接地平面。 通过将谐振电路施加扫频信号同时监测来自谐振电路的反射功率来进行测量。

公开(公告)号：US07911213B2

公开(公告)日：2011-03-22

申请号：US12240375

申请日：2008-09-29

Applicant: Jaehyun Kim ,  Arthur H. Sato ,  Keith Comendant ,  Qing Liu ,  Feiyang Wu

Inventor： Jaehyun Kim ,  Arthur H. Sato ,  Keith Comendant ,  Qing Liu ,  Feiyang Wu

IPC: G01R27/26

CPC classification number: G01R27/2641 ,  G01R27/2694 ,  G01R35/005

Abstract: A method is disclosed for calibrating a capacitance of an apparatus for measuring dielectric properties of a part. The apparatus includes an electrically grounded chamber, a lower electrode disposed within the chamber and connected to a radiofrequency (RF) transmission rod, an electrically grounded upper electrode disposed within the chamber above the lower electrode, and a variable capacitor connected to control transmission of RF power through the RF transmission rod to the lower electrode. A method is also disclosed for determining a capacitance of a part through use of the apparatus. A method is also disclosed for determining a dielectric constant of a part through use of the apparatus. A method is also disclosed for determining a loss tangent of a part through use of the apparatus.