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    Extraordinary electromagnetic transmission by antenna arrays and frequency selective surfaces having compound unit cells with dissimilar elements
    4.
    发明授权
    Extraordinary electromagnetic transmission by antenna arrays and frequency selective surfaces having compound unit cells with dissimilar elements 有权

    公开(公告)号：US09923284B1

    公开(公告)日：2018-03-20

    申请号：US14925045

    申请日：2015-10-28

    申请人： National Technology & Engineering Solutions of Sandia, LLC

    发明人： Hung Loui ,  Bernd H. Strassner, II

    IPC分类号： H01Q21/30 ,  H01Q21/00 ,  G01R23/00

    CPC分类号： H01Q21/30 ,  G01R23/00 ,  H01Q15/0086

    摘要： The various embodiments presented herein relate to extraordinary electromagnetic transmission (EEMT) to enable multiple inefficient (un-matched) but coupled radiators and/or apertures to radiate and/or pass electromagnetic waves efficiently. EEMT can be utilized such that signal transmission from a plurality of antennas and/or apertures occurs at a transmission frequency different to transmission frequencies of the individual antennas and/or aperture elements. The plurality of antennas/apertures can comprise first antenna/aperture having a first radiating area and material(s) and second antenna/aperture having a second radiating area and material(s), whereby the first radiating/aperture area and second radiating/aperture area can be co-located in a periodic compound unit cell. Owing to mutual coupling between the respective antennas/apertures in their arrayed configuration, the transmission frequency of the array can be shifted from the transmission frequencies of the individual elements. EEMT can be utilized for an array of evanescent of inefficient radiators connected to a transmission line(s).

    Method and system for determining an offset between a detector and a point on a motor
    8.
    发明授权
    Method and system for determining an offset between a detector and a point on a motor 有权
    用于确定检测器和电动机上的点之间的偏移的方法和系统

    公开(公告)号：US09559621B2

    公开(公告)日：2017-01-31

    申请号：US14736439

    申请日：2015-06-11

    申请人： Control Techniques Limited

    发明人： Jürgen Fischer

    IPC分类号： H02P23/12 ,  H02P6/16 ,  G01R23/00

    CPC分类号： H02P6/16 ,  G01D5/2448 ,  G01R23/00

    摘要： The present disclosure relates to a method of determining an offset between a detector and a point on a motor, the movement of the point on the motor being impeded in at least one direction. In particular, this disclosure relates to a method of determining a commutation offset for an encoder that works in conjunction with a synchronous motor. The commutation offset is an offset between the detector and the north pole of a permanent magnet within the motor. The method comprises setting a test value for the offset, causing a displacement of the detector based on the test value and measuring that displacement. The method further comprises repeatedly increasing the test value, and causing and measuring a displacement for each so increased test value until it is determined that the test value has crossed a threshold.

    摘要翻译： 本公开涉及一种确定检测器和电动机上的点之间的偏移的方法，电动机上的点的移动在至少一个方向上被阻碍。 特别地，本公开涉及一种确定与同步电动机一起工作的编码器的换向偏移的方法。 换向偏移是电机内的永磁体的检测器和北极之间的偏移。 该方法包括设置偏移的测试值，基于测试值引起检测器的位移并测量位移。 该方法还包括重复地增加测试值，并且对于每个这样增加的测试值引起和测量位移，直到确定测试值已经超过阈值。

    Systems and methods for measuring the frequency of signals generated by high frequency medical devices
    9.
    发明授权
    Systems and methods for measuring the frequency of signals generated by high frequency medical devices 有权
    用于测量由高频医疗设备产生的信号频率的系统和方法

    公开(公告)号：US09529025B2

    公开(公告)日：2016-12-27

    申请号：US13898632

    申请日：2013-05-21

    申请人： COVIDIEN LP

    发明人： Wayne L. Moul ,  Robert J. Behnke, II ,  Scott E. M. Frushour ,  Jeffrey L. Jensen

    IPC分类号： G01R23/02 ,  G01R23/00 ,  G01R25/00

    CPC分类号： G01R23/02 ,  A61B18/1206 ,  A61B18/1815 ,  A61B2018/00642 ,  A61B2018/00773 ,  A61B2018/128 ,  A61B2018/1823 ,  G01R23/00 ,  G01R23/145 ,  G01R25/00 ,  G01R25/02

    摘要： Systems and corresponding methods for determining characteristics of an output signal generated by a high-frequency medical device using low-frequency measurement systems are disclosed. A digital measurement system includes an oscillator, a mixer, and a controller coupled to each other. The oscillator provides a reference signal having a second frequency. The mixer generates a down-converted signal based on the output signal and the reference signal. The controller then determines a characteristic of the output signal (e.g., frequency or phase) based on the down-converted signal. An analog measurement system includes a filter having a center frequency, a rectifier, and a controller. The filter filters the output signal and the rectifier rectifies the filtered signal. The controller samples the rectified signal and determines a characteristic of the output signal based on the level of the rectified signal. The reference signal controller may adjust a characteristic of the output signal based on the determined frequency and/or phase of the output signal.

    摘要翻译： 公开了一种用于确定由使用低频测量系统的高频医疗设备产生的输出信号的特性的系统和相应方法。 数字测量系统包括振荡器，混频器和彼此耦合的控制器。 振荡器提供具有第二频率的参考信号。 混频器基于输出信号和参考信号产生下变频信号。 然后，控制器基于下变频信号确定输出信号的特性（例如，频率或相位）。 模拟测量系统包括具有中心频率，整流器和控制器的滤波器。 滤波器对输出信号进行滤波，整流器整流滤波后的信号。 控制器对整流信号进行采样，并根据整流信号的电平确定输出信号的特性。 参考信号控制器可以基于确定的输出信号的频率和/或相位来调整输出信号的特性。