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    Radio frequency power amplifier improvements using pre-distortion of an amplitude modulation power supply
    1.
    发明授权
    Radio frequency power amplifier improvements using pre-distortion of an amplitude modulation power supply 有权
    射频功率放大器改进使用预失真的幅度调制电源

    公开(公告)号：US07884681B1

    公开(公告)日：2011-02-08

    申请号：US12112006

    申请日：2008-04-30

    申请人： Nadim Khlat ,  Ruediger Bauder ,  David Reed ,  Baker P. Scott

    发明人： Nadim Khlat ,  Ruediger Bauder ,  David Reed ,  Baker P. Scott

    IPC分类号： H03C1/00 ,  H03C1/02 ,  H03C1/06

    CPC分类号： H03C1/06 ,  H03C1/36 ,  H03C2200/0083

    摘要： Embodiments of the present invention include amplitude-modulated or polar-modulated radio frequency (RF) power amplifier circuitry, in which an envelope power supply input to an RF power amplifier is powered by a pre-distorted amplitude modulation (AM) power supply. The pre-distorted AM power supply receives an AM signal, which is then pre-distorted and amplified to provide an AM power supply signal to the RF power amplifier. The pre-distortion of the AM signal is used to improve the linearity, the efficiency, or both, of the RF power amplifier. The pre-distortion provides a feed-forward system, which may allow use of a reduced bandwidth pre-distorted AM signal to an AM power supply and a reduced bandwidth AM power supply, which may increase efficiency.

    摘要翻译： 本发明的实施例包括幅度调制或极调制的射频（RF）功率放大器电路，其中向RF功率放大器输入的包络电源由预失真的幅度调制（AM）电源供电。 预失真的AM电源接收AM信号，然后将其预失真和放大，以向RF功率放大器提供AM电源信号。 AM信号的预失真用于提高RF功率放大器的线性度，效率或两者。 预失真提供前馈系统，其可以允许对AM电源使用减少带宽的预失真AM信号以及降低带宽的AM电源，这可以提高效率。

    Windowing to narrow a bandwidth of an amplitude modulation power supply input signal
    2.
    发明授权
    Windowing to narrow a bandwidth of an amplitude modulation power supply input signal 有权
    窗口缩小幅度调制电源输入信号的带宽

    公开(公告)号：US08159309B1

    公开(公告)日：2012-04-17

    申请号：US12822848

    申请日：2010-06-24

    申请人： Nadim Khlat ,  David Reed

    发明人： Nadim Khlat ,  David Reed

    IPC分类号： H03C1/02 ,  H03C1/06 ,  H03C3/02 ,  H03C3/08

    CPC分类号： H01M10/0525 ,  C07C307/02 ,  C07C311/48 ,  H01M6/164 ,  H01M10/0567 ,  H01M10/0569 ,  H01M2300/0034

    摘要： The present disclosure relates to using windowing to reduce the bandwidth of an amplitude modulation (AM) power supply input signal (PSIS), which is fed to an AM power supply to provide envelope power to an RF power amplifier stage via an AM power supply output signal. By reducing the bandwidth, noise levels from the AM power supply may be reduced. However, although the bandwidth of the AM PSIS is reduced, the AM power supply output signal may track the AM of the RF power amplifier stage closely enough to meet linearity requirements and to provide high efficiency. The windowing may be based on dividing a stream of AM input samples into a stream of input windows, from which a stream of output windows is created to provide a stream of windowed AM input samples that are used to provide a windowed AM PSIS to the AM power supply.

    摘要翻译： 本公开涉及使用窗口来降低幅度调制（AM）电源输入信号（PSIS）的带宽，其被馈送到AM电源以经由AM电源输出向RF功率放大器级提供包络功率 信号。 通过降低带宽，AM电源的噪声水平可能会降低。 然而，尽管AM PSIS的带宽减小，AM电源输出信号可以跟踪RF功率放大器级的AM足够紧密以满足线性要求并提供高效率。 窗口可以基于将AM输入样本流划分成输入窗口流，从该流输入窗口的流被创建以提供用于向AM提供窗口AM PSIS的窗口AM输入样本流 电源。

    Image rejection calibration
    3.
    发明授权
    Image rejection calibration 有权
    图像拒绝校准

    公开(公告)号：US08064863B1

    公开(公告)日：2011-11-22

    申请号：US12371018

    申请日：2009-02-13

    申请人： David Reed ,  Nadim Khlat

    发明人： David Reed ,  Nadim Khlat

    IPC分类号： H04B1/18 ,  H04B1/10

    CPC分类号： H04B1/30

    摘要： The present invention relates to image rejection calibration in a radio frequency (RF) receiver. In one embodiment, the receiver includes a receiver front-end and an image rejection calibration system. The image rejection calibration system provides a first test signal to an RF input of the receiver front-end, and obtains first measurements of a quadrature output signal output from the receiver front-end while the first test signal is applied to the RF input. The image rejection calibration system then applies a second test signal to the RF input of the receiver front-end that is approximately 90 degrees out-of-phase with the first test signal, and obtains second measurements of the quadrature output signal while the second test signal is applied to the RF input. Based on the first and second measurements, the image rejection calibration system determines an amplitude error and a phase error of the receiver front-end.

    摘要翻译： 本发明涉及射频（RF）接收机中的镜像抑制校准。 在一个实施例中，接收机包括接收机前端和镜像抑制校准系统。 图像抑制校准系统向接收机前端的RF输入提供第一测试信号，并且在将第一测试信号施加到RF输入端时获得从接收机前端输出的正交输出信号的第一测量值。 然后，图像抑制校准系统将第二测试信号施加到与第一测试信号相差大约90度的接收器前端的RF输入端，并且在第二测试期间获得正交输出信号的第二测量值 信号被施加到RF输入。 基于第一和第二测量，图像抑制校准系统确定接收机前端的振幅误差和相位误差。

    METHOD AND SYSTEM FOR NON-DESTRUCTIVE DISTRIBUTION PROFILING OF AN ELEMENT IN A FILM
    4.
    发明申请
    METHOD AND SYSTEM FOR NON-DESTRUCTIVE DISTRIBUTION PROFILING OF AN ELEMENT IN A FILM 有权
    电影中元素的非破坏性分布分布的方法和系统

    公开(公告)号：US20150069230A1

    公开(公告)日：2015-03-12

    申请号：US14542175

    申请日：2014-11-14

    申请人： Paola deCecco ,  Bruno Schueler ,  David Reed ,  Michael Kwan ,  David Stephen Ballance

    发明人： Paola deCecco ,  Bruno Schueler ,  David Reed ,  Michael Kwan ,  David Stephen Ballance

    IPC分类号： G01N23/227

    CPC分类号： G01N23/2273 ,  H01J37/26 ,  H01J2237/24585 ,  H03F1/26

    摘要： A method to determine a distribution profile of an element in a film. The method comprises exciting an electron energy of an element deposited in a first film, obtaining a first spectrum associating with the electron energy, and removing a background spectrum from the first spectrum. Removing the background value generates a processed spectrum. The method further includes matching the processed spectrum to a simulated spectrum with a known simulated distribution profile for the element in a film comparable to the first film. A distribution profile is obtained for the element in the first film based on the matching of the processed spectrum to a simulated spectrum selected from the set of simulated spectra.

    摘要翻译： 确定胶片中元素的分布特征的方法。 该方法包括激发沉积在第一膜中的元素的电子能量，获得与电子能量相关联的第一光谱，以及从第一光谱去除背景光谱。 删除背景值会生成已处理的光谱。 该方法还包括将经处理的光谱与具有与第一胶片相当的胶片中元素的已知模拟分布曲线进行匹配。 基于所处理的光谱与从所述一组模拟光谱中选择的模拟光谱的匹配，为第一胶片中的元素获得分布曲线。

    PLATFORM LEVELING SYSTEM
    5.
    发明申请
    PLATFORM LEVELING SYSTEM 审中-公开
    平台水平系统

    公开(公告)号：US20120211301A1

    公开(公告)日：2012-08-23

    申请号：US13031879

    申请日：2011-02-22

    申请人： Brian Clark ,  Rainer Leuschke ,  David Reed

    发明人： Brian Clark ,  Rainer Leuschke ,  David Reed

    IPC分类号： B66F11/04 ,  G06F19/00

    CPC分类号： B66F11/044 ,  B66F17/006

    摘要： A leveling system for a structure to be leveled is provided. At least one linear accelerometer is mounted to measure acceleration in a principal plane of motion of a lift structure. An angular rate sensor is mounted to measure angular velocity about an axis perpendicular to the principal plane of motion of the lift structure. An electronic control module is configured to use measurements from angular rate and accelerometer sensors to produce a level angle output. The level angle output is used to adjust and control a level angle of the structure to be leveled.

    摘要翻译： 提供了一种用于平整结构的调平系统。 安装至少一个线性加速度计来测量电梯结构的主运动平面中的加速度。 安装角速率传感器来测量围绕垂直于升降机构主运动平面的轴的角速度。 电子控制模块被配置为使用来自角速度和加速度计传感器的测量值来产生电平角输出。 电平角输出用于调整和控制要调平的结构的水平角。

    Method and system for non-destructive distribution profiling of an element in a film
    6.
    发明授权
    Method and system for non-destructive distribution profiling of an element in a film 有权
    电影中元素的非破坏性分布分布的方法和系统

    公开(公告)号：US07884321B2

    公开(公告)日：2011-02-08

    申请号：US12220645

    申请日：2008-07-25

    申请人： Paola deCecco ,  Bruno Schueler ,  David Reed ,  Michael Kwan ,  David Stephen Ballance

    发明人： Paola deCecco ,  Bruno Schueler ,  David Reed ,  Michael Kwan ,  David Stephen Ballance

    IPC分类号： H01J37/26

    CPC分类号： G01N23/2273 ,  H01J37/26 ,  H01J2237/24585 ,  H03F1/26

    摘要： A method to determine a distribution profile of an element in a film. The method comprises exciting an electron energy of an element deposited in a first film, obtaining a first spectrum associating with the electron energy, and removing a background spectrum from the first spectrum. Removing the background value generates a processed spectrum. The method further includes matching the processed spectrum to a simulated spectrum with a known simulated distribution profile for the element in a film comparable to the first film. A distribution profile is obtained for the element in the first film based on the matching of the processed spectrum to a simulated spectrum selected from the set of simulated spectra.

    摘要翻译： 确定胶片中元素的分布特征的方法。 该方法包括激发沉积在第一膜中的元素的电子能量，获得与电子能量相关联的第一光谱，以及从第一光谱去除背景光谱。 删除背景值会生成已处理的光谱。 该方法还包括将经处理的光谱与具有与第一胶片相当的胶片中元素的已知模拟分布曲线进行匹配。 基于所处理的光谱与从所述一组模拟光谱中选择的模拟光谱的匹配，为第一胶片中的元素获得分布曲线。

    LIQUID FILTER APPARATUS
    7.
    发明申请
    LIQUID FILTER APPARATUS 审中-公开
    液体过滤器

    公开(公告)号：US20100089816A1

    公开(公告)日：2010-04-15

    申请号：US12248084

    申请日：2008-10-09

    申请人： Brian Pahl ,  David Reed

    发明人： Brian Pahl ,  David Reed

    IPC分类号： B01D29/09

    CPC分类号： B01D33/04 ,  B01D33/056 ,  B01D33/76

    摘要： A filter apparatus for filtering material solids from a liquid having a filter belt driven by a pair of belt transport chains and including a purged seal member to limit bypass of unfiltered fluid around the filter belt. The filter apparatus includes a plurality of flight bars configured to float above the filter belt thereby reducing wear. Also included is a webbing layer provided on filter belt outboard portions including holes with grommets configured to engage with the belt transport chains.

    摘要翻译： 一种用于从具有由一对带传送链驱动的过滤带的液体的液体中过滤材料固体的过滤装置，并且包括清洗的密封构件以限制未过滤流体绕过滤带的旁路。 过滤装置包括多个飞行杆，其构造成浮在过滤带上方，从而减少磨损。 还包括设置在过滤带外侧部分上的织带，其包括孔，孔配置为与带传送链接合。

    Alternate Path Indexing Device
    8.
    发明申请
    Alternate Path Indexing Device 有权
    备用路径索引设备

    公开(公告)号：US20070251697A1

    公开(公告)日：2007-11-01

    申请号：US11380769

    申请日：2006-04-28

    申请人： Yves Loretz ,  Donald Ross ,  David Reed

    发明人： Yves Loretz ,  Donald Ross ,  David Reed

    IPC分类号： E21B34/10

    CPC分类号： E21B23/004 ,  E21B34/10

    摘要： An embodiment of a method of shifting a valve between a plurality of flow condition positions, includes the steps of providing a mechanical indexer device in operational connection with a valve, the indexer device including a primary path defining a sequence through a plurality of valve positions at and between open and closed and a detent moveable along the primary path; providing at least one alternate path from a point along the primary path to a preceding position on the primary path along the sequence; shifting the valve to a subsequent position in the sequence; and shifting the valve to the preceding position in the sequence.

    摘要翻译： 一种在多个流动状态位置之间移动阀的方法的实施例包括提供与阀操作连接的机械分度器装置的步骤，所述分度器装置包括通过多个阀位置限定顺序的主路径 并且在打开和关闭之间以及沿着主路径可移动的制动器; 提供从所述主路径的点到沿着所述序列的所述主路径上的前一位置的至少一条备用路径; 将阀门按顺序移动到随后的位置; 并按顺序将阀移至前一位置。

    RADIATION DETECTOR
    9.
    发明申请
    RADIATION DETECTOR 有权
    辐射探测器

    公开(公告)号：US20070205370A1

    公开(公告)日：2007-09-06

    申请号：US11239435

    申请日：2005-09-22

    申请人： Trevor Murdoch ,  David Reed

    发明人： Trevor Murdoch ,  David Reed

    IPC分类号： G01T1/20

    CPC分类号： G01T1/17

    摘要： The invention is a digital radiation detector utilizing the stable timing functions of a microcontroller or plurality of microcontrolling devices to perform three independent functions. A first timer generates a continuous square wave output that is fed through a class B amplifier to yield a stable, drift-free power supply for a connected radiation sensor. A second timer is used as an event counter for counting the processed pulses coming from the radiation sensor. A third timer acts as a real time clock generating a one-second interrupt for quantifying the number of counts per second. The number of counts per second can be communicated as raw data through a communication interface or presented as a number of audible or visual displays.

    摘要翻译： 本发明是利用微控制器或多个微控制器件的稳定定时功能执行三个独立功能的数字辐射探测器。 第一定时器产生连续的方波输出，该输出通过B类放大器馈送，以产生用于连接的辐射传感器的稳定，无漂移的电源。 第二计时器用作对来自辐射传感器的经处理的脉冲进行计数的事件计数器。 第三个定时器用作实时时钟，产生一秒钟的中断，用于量化每秒计数。 每秒的计数可以作为原始数据通过通信接口传达，或作为多个可听或可视显示器呈现。