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    • 1. 发明授权
    • Dual totem current sensor for measuring load current in an H-bridge power stage
    • 双图腾电流传感器,用于测量H桥功率级的负载电流
    • US06534967B1
    • 2003-03-18
    • US09677395
    • 2000-09-29
    • Craig R. Weggel
    • Craig R. Weggel
    • G01R2908
    • G01R19/2513
    • A dual totem (or H-bridge) power stage has four power devices, at least two of which are controlled by pulse width modulation (PWM) control signals to change current paths of the load current flowing through the driven load. A current sensor for measuring the load current includes a transformer having a secondary winding having a number N of turns, and a primary winding. The primary winding has four separate primary winding sections each coupled in series with a different one of the four power devices of the dual totem power stage. Different ones of the four primary winding sections have different numbers of turns such that different turns ratios result between the primary winding and the secondary winding for different current paths, thus generating a modulated signal on the secondary winding. The modulated signal is demodulated for accurate representation or reproduction of the current flowing through the load.
    • 双图腾(或H桥)功率级具有四个功率器件,其中至少两个由脉冲宽度调制(PWM)控制信号控制,以改变流过被驱动负载的负载电流的电流路径。 用于测量负载电流的电流传感器包括具有N圈匝数的次级绕组和初级绕组的变压器。 初级绕组具有四个单独的初级绕组部分,每个绕组部分与双图腾功率级的四个功率器件中的不同的一个串联耦合。 四个初级绕组部分中的不同绕组具有不同的匝数,使得在不同电流路径的初级绕组和次级绕组之间产生不同的匝数比,从而在次级绕组上产生调制信号。 调制信号被解调以精确地表示或再现流过负载的电流。
    • 2. 发明授权
    • Magnetic field probe having a shielding and isolating layers to protect lead wires extending between a coil and pads
    • 磁场探头具有屏蔽和隔离层,以保护在线圈和焊盘之间延伸的导线
    • US06483304B1
    • 2002-11-19
    • US09041041
    • 1998-03-12
    • Futoyoshi KouYoshiyuki Kiyosawa
    • Futoyoshi KouYoshiyuki Kiyosawa
    • G01R2908
    • G01R29/0878G01V3/10
    • A magnetic field probe includes a substrate and a conductive layer provided on the substrate. The conductive layer has a coil, lead wires, and pads. The coil has at least one turn and outputs a signal indicative of a magnetic field from a device under test in a vicinity of the magnetic field probe. The lead wires extend from the coil to the pads, the signal from the coil being transmitted to the pads through the lead wires. An isolating layer of a dielectric material is provided on the lead wires to protect the lead wires between the coil and the pads in the conductive layer. A shielding layer of a conductive material is provided on the isolating layer to protect the isolating layer. The shielding layer prevents distortion of the magnetic field at the lead wires in conjunction with the isolating layer.
    • 磁场探针包括衬底和设置在衬底上的导电层。 导电层具有线圈,引线和焊盘。 线圈具有至少一匝,并且在磁场探针附近输出表示来自被测器件的磁场的信号。 引线从线圈延伸到焊盘,来自线圈的信号通过引线传输到焊盘。 在导线上设置电介质材料的绝缘层,以保护引线在导体层中的线圈和焊盘之间。 在绝缘层上设置导电材料的屏蔽层以保护隔离层。 屏蔽层防止引线与隔离层结合的磁场变形。
    • 3. 发明授权
    • Device for determining the filling level of a filling material in a container
    • 用于确定容器中填充材料的填充水平的装置
    • US06266022B1
    • 2001-07-24
    • US09497022
    • 2000-02-02
    • Roland MüllerThomas MalzahnKarl-Peter HauptvogelDietmar Birgel
    • Roland MüllerThomas MalzahnKarl-Peter HauptvogelDietmar Birgel
    • G01R2908
    • G01F23/284
    • The invention relates to a device (1) for determining the filling level in a container (4). Moreover, the invention also relates to a method for fastening an input coupling unit (9) on the antenna (7), the antenna (7) being used in the device (1) according to the invention. It is the object of the invention to provide overvoltage protection for an antenna (7), and a method for producing such an antenna (7). The object is achieved by virtue of the fact that the antenna (7) comprises at least two dielectric layers (12, 13). The first dielectric layer (12) has at least one cutout (15) for holding the input coupling unit (9). The second dielectric layer (13) bears an antenna structure (16) on the side facing the first dielectric layer (12) and has a conductive coating (17) with openings (18) on the side averted from the first dielectric layer (12). Contacts (19) are provided in the second dielectric layer (13) and the conductive layer (17) which connect the input coupling unit (9) to the conductive coating (17). The region of space defined by the contacts (19), the conductive coating (17) and the antenna housing (30) forms a Faraday cage.
    • 本发明涉及一种用于确定容器(4)中的填充水平的装置(1)。 此外,本发明还涉及一种用于将输入耦合单元(9)紧固在天线(7)上的方法,天线(7)用于根据本发明的设备(1)中。 本发明的目的是提供一种用于天线(7)的过电压保护,以及一种用于制造这种天线(7)的方法。 该目的是通过天线(7)包括至少两个电介质层(12,13)的事实来实现的。 第一电介质层(12)具有用于保持输入耦合单元(9)的至少一个切口(15)。 第二电介质层(13)在与第一介电层(12)相对的一侧上承载天线结构(16),并且具有在从第一介电层(12)避开的一侧上具有开口(18)的导电涂层(17) 。 触头(19)设置在第二电介质层(13)和将输入耦合单元(9)连接到导电涂层(17)的导电层(17)上。 由触头(19),导电涂层(17)和天线壳体(30)限定的空间区域形成法拉第笼。
    • 4. 发明授权
    • Apparatus and method for measuring and tuning circularly polarized antennas
    • 用于测量和调谐圆极化天线的装置和方法
    • US06448787B1
    • 2002-09-10
    • US09651605
    • 2000-08-30
    • Stephen M. Oglesby
    • Stephen M. Oglesby
    • G01R2908
    • G01R29/10H01Q19/028
    • An apparatus and method is disclosed for measuring and tuning circularly polarized antennas to simultaneously optimize axial ratio, resonant frequency, and impedance match. The antenna under test is mounted within the test apparatus. Located in the zenith and far field of the antenna are two rigidly mounted, orthogonal, and planar probes. The amplitude and phase developed by the antenna is measured at each probe. The computer calculates the zenith axial ratio from the measured amplitude and phase difference between the probes. The method further includes the steps to determine sense-of-rotation of the circular polarized wave, impedance match, and resonant frequency. This apparatus and method is an elegant, simple, and cost effective design that is applicable to any isolated circular polarized radiating element.
    • 公开了一种用于测量和调谐圆极化天线以同时优化轴比,谐振频率和阻抗匹配的装置和方法。 被测天线安装在测试设备内。 位于天顶的天顶和远场是两个刚性安装的正交和平面探头。 在每个探针处测量由天线展开的振幅和相位。 计算机根据探头之间的测量幅度和相位差计算天顶轴比。 该方法还包括确定圆偏振波的旋转方向,阻抗匹配和谐振频率的步骤。 该装置和方法是优雅,简单和成本有效的设计,适用于任何隔离的圆形极化辐射元件。
    • 5. 发明授权
    • Methods for processing, optimization, calibration and display of measured dielectrometry signals using property estimation grids
    • 使用属性估计网格处理,优化,校准和显示测量的介电电位信号的方法
    • US06380747B1
    • 2002-04-30
    • US09310507
    • 1999-05-12
    • Neil J. GoldfineMarkus ZahnAlexander V. MamishevDarrell E. SchlickerAndrew P. Washabaugh
    • Neil J. GoldfineMarkus ZahnAlexander V. MamishevDarrell E. SchlickerAndrew P. Washabaugh
    • G01R2908
    • G01R27/2623
    • A method is disclosed for processing, optimization, calibration, and display of measured dielectrometry signals. A property estimator is coupled by way of instrumentation to an electrode structure and translates sensed electromagnetic responses into estimates of one or more preselected properties or dimensions of the material, such as dielectric permittivity and ohmic conductivity, layer thickness, or other physical properties that affect dielectric properties, or presence of other lossy dielectric or metallic objects. A dielectrometry sensor is disclosed which can be connected in various ways to have different effective penetration depths of electric fields but with all configurations having the same air-gap, fluid gap, or shim lift-off height, thereby greatly improving the performance of the property estimators by decreasing the number of unknowns. The sensor geometry consist of a periodic structure with, at any one time, a single sensing element that provides for multiple wavelength within the same sensor footprint.
    • 公开了一种用于处理,优化,校准和显示测量的电导率信号的方法。 属性估计器通过仪器耦合到电极结构,并将感测到的电磁响应转换成材料的一个或多个预选属性或尺寸的估计,例如介电常数和欧姆电导率,层厚度或影响电介质的其它物理性质 性质或其他有损电介质或金属物体的存在。 公开了一种电介质传感器,其可以以各种方式连接以具有不同的有效穿透深度的电场,但是所有构造具有相同的气隙,流体间隙或垫片剥离高度,从而大大提高了性能的性能 通过减少未知数的估计。 传感器几何形状由周期性结构组成,在任何时间,单个传感元件可在同一传感器覆盖区内提供多个波长。
    • 6. 发明授权
    • Test for determining polarity of electrolytic capacitors within electronic assemblies
    • 测试电子组件中电解电容器的极性
    • US06169395A
    • 2001-01-02
    • US08903321
    • 1997-07-16
    • Philip N. King
    • Philip N. King
    • G01R2908
    • G01R31/312G01R31/016G01R31/046G01R31/2813
    • A method of determining whether an electrolytic capacitor is properly connected or reversed in an electronic assembly. In a first embodiment, a non-contacting probe is placed near but not touching the body of the device under test (DUT). One terminal of the DUT is driven by a stimulus (voltage source or current source) while the other terminal is connected to a reference voltage. A voltage is measured at the probe relative to the reference voltage and the device is properly oriented if the measured voltage exceeds a predetermined threshold. In a second embodiment, current through the probe is measured instead of voltage at the probe. In a third embodiment, a non-contacting probe is placed near but not touching both leads of the DUT. Each DUT lead is alternately driven by a stimulus and alternately connected to a reference voltage. For each of the two lead test configurations, a voltage at each DUT lead is measured and current through the non-contacting probe is measured. Two algebraic electromagnetic coupling coefficients are computed from the four voltage measurements and the two current measurements. The relative size of the electromagnetic coupling coefficients determines the measured polarity of the DUT. An alternative configuration for any of the embodiments is to drive the probe instead of a terminal of the DUT.
    • 一种在电子组件中确定电解电容器是否正确连接或反向的方法。 在第一实施例中,非接触式探针被放置在接近但不接触被测器件(DUT)的主体的位置。 DUT的一个端子由刺激(电压源或电流源)驱动,而另一个端子连接到参考电压。 在探针处相对于参考电压测量电压,并且如果测量的电压超过预定阈值,则器件被正确定向。 在第二实施例中,测量通过探针的电流而不是探针处的电压。 在第三实施例中,非接触探针放置在DUT的两个引线附近但不接触。 每个DUT引线交替地被激励驱动并交替地连接到参考电压。 对于两个引线测试配置中的每一个,测量每个DUT引线处的电压,并测量通过非接触式探头的电流。 从四个电压测量和两个电流测量计算两个代数电磁耦合系数。 电磁耦合系数的相对大小决定了DUT的测量极性。 任何实施例的替代配置是驱动探针而不是DUT的终端。
    • 7. 发明授权
    • Magnetic field probe having a shielding layer to protect lead wires with an isolating layer
    • 磁场探头具有屏蔽层,用于保护引线与隔离层
    • US06696834B2
    • 2004-02-24
    • US10229215
    • 2002-08-28
    • Futoyoshi KouYoshiyuki Kiyosawa
    • Futoyoshi KouYoshiyuki Kiyosawa
    • G01R2908
    • G01R29/0878G01V3/10
    • A magnetic field probe includes a substrate and a conductive layer provided on the substrate. The conductive layer has a coil, lead wires, and pads. The coil has at least one turn and outputs a signal indicative of a magnetic field from a device under test in a vicinity of the magnetic field probe. The lead wires extend from the coil to the pads, the signal from the coil being transmitted to the pads through the lead wires. An isolating layer of a dielectric material is provided on the lead wires to protect the lead wires between the coil and the pads in the conductive layer. A shielding layer of a conductive material is provided on the isolating layer to protect the isolating layer. The shielding layer prevents distortion of the magnetic field at the lead wires in conjunction with the isolating layer.
    • 磁场探针包括衬底和设置在衬底上的导电层。 导电层具有线圈,引线和焊盘。 线圈具有至少一匝,并且在磁场探针附近输出表示来自被测器件的磁场的信号。 引线从线圈延伸到焊盘,来自线圈的信号通过引线传输到焊盘。 在导线上设置电介质材料的绝缘层,以保护引线在导体层中的线圈和焊盘之间。 在绝缘层上设置导电材料的屏蔽层以保护隔离层。 屏蔽层防止引线与隔离层结合的磁场变形。
    • 8. 发明授权
    • Optoelectronic system for the testing of an antenna
    • 用于测试天线的光电系统
    • US06243042B1
    • 2001-06-05
    • US09218153
    • 1998-12-22
    • Luigi d'AuriaJean ChazelasJean-Charles RenaudMaxime Lailler
    • Luigi d'AuriaJean ChazelasJean-Charles RenaudMaxime Lailler
    • G01R2908
    • G01R29/10
    • This optoelectronic system for the testing of a main antenna comprises: a test antenna designed to be placed in the field of transmission or reception of the main antenna; an optoelectronic component associated with the test antenna alternatively receiving and sending optical signals from/to remote transmitters/receivers and receiving and/or sending optical signals from/to the test antenna; an electric matching circuit connected between the optoelectronic component and the test antenna. This system thus enables the testing on the spot of an antenna (for example a radar antenna) without disturbing the radiation pattern of this antenna. This semiconductor component is therefore alternatively a modulator or a detector of light radiation, and it is connected by optical fibers to emitters and adapted detectors located out of the field of the antennas to be tested. The cables formed by dielectric materials do not disturb the radiation pattern of the antennas. An optoelectronic system is used to overcome the variations in the characteristics of the semiconductor component, thus averting especially a temperature stabilization of this component.
    • 用于测试主天线的光电系统包括:被设计为放置在主天线的发射或接收领域中的测试天线; 与测试天线相关联的光电子部件交替地从/向远程发射机/接收机接收和发送光信号,并从测试天线接收和/或发送光信号; 连接在光电子部件和测试天线之间的电匹配电路。 因此,该系统能够在不干扰该天线的辐射图的情况下在天线(例如雷达天线)的位置进行测试。 因此,该半导体部件可选地是光辐射的调制器或检测器,并且其通过光纤连接到位于待测试天线外的发射器和适配的检测器。 由介电材料形成的电缆不会干扰天线的辐射图。 使用光电子系统来克服半导体部件的特性的变化,从而避免该部件的温度稳定化。
    • 10. 发明授权
    • Low-distortion positioning equipment for antenna radiation pattern measurements
    • 用于天线辐射图测量的低失真定位设备
    • US06181285B2
    • 2001-01-30
    • US09577315
    • 2000-05-24
    • Jonathan L. SullivanJames Blake Winter
    • Jonathan L. SullivanJames Blake Winter
    • G01R2908
    • G01R29/105
    • An antenna positioner is provided for use in an anechoic chamber to enable the radiation pattern of an antenna under test to be measured. A vertically disposed and selectively rotatable azimuth rotator pedestal is positioned in the anechoic chamber and a support is mounted on the pedestal for rotation therewith. A roll-axis shaft is mounted on the support for rotatably supporting the antenna under test. The roll-axis shaft rotator is positioned outside the anechoic chamber and has a horizontally disposed and horizontally movable connecting rod which is selectively movable into the chamber for connection to the roll-axis shaft to incrementally rotate the roll-axis shaft and the antenna under test.
    • 提供了一种天线定位器,用于在电波暗室中使能测量待测天线的辐射图。 垂直设置并且选择性地旋转的方位转动器基座定位在消声室中,并且支撑件安装在基座上以与其一起旋转。 辊轴安装在支撑件上,用于可旋转地支撑待测天线。 辊轴转轴位于消声室外部,并且具有水平布置且水平方向可动的连杆,该连杆可选择性地移动到腔室中,用于连接到辊轴轴,以使滚轴轴和被测天线逐渐旋转 。