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7 条记录 (耗时 0.015 秒)

    Transmitting stage
    1.
    发明授权
    Transmitting stage 有权
    传输阶段

    公开(公告)号：US07359685B2

    公开(公告)日：2008-04-15

    申请号：US11127607

    申请日：2005-05-12

    申请人： Houman Jafari ,  Ralf Burdenski

    发明人： Houman Jafari ,  Ralf Burdenski

    IPC分类号： H04B1/04

    CPC分类号： H04B1/0475

    摘要： A transmission stage in polar loop technology includes an amplitude regulation means, a phase regulation means, a VCO and a feedback path. In the feedback path a variable amplifier is provided. The amplitude regulation means is further implemented in order to be controlled by a control means according to a request for a power variation in the output signal of the amplifier in order to correspondingly vary an amplitude control signal for the power amplifier. Simultaneously, the control means is implemented in order to correspondingly control the variable feedback path amplifier, so that the amplitude of the output signal of the variable feedback path amplifier remains in a narrowly limited predetermined range. Thus, power variations in the output signal of the amplifier operated in the non-linear area are held remote from the phase locked loop, so that the phase regulation means may be implemented at low cost and operates reliably anyway.

    摘要翻译： 极环技术的传输阶段包括幅度调节装置，相位调节装置，VCO和反馈路径。 在反馈路径中提供可变放大器。 幅度调节装置还被实现以便由控制装置根据对放大器的输出信号中的功率变化的请求进行控制，以便相应地改变功率放大器的幅度控制信号。 同时，实现控制装置以相应地控制可变反馈路径放大器，使得可变反馈路径放大器的输出信号的幅度保持在窄限制的预定范围内。 因此，在非线性区域中操作的放大器的输出信号中的功率变化保持远离锁相环，使得相位调节装置可以以低成本实现并且可靠地运行。

    Transmitter stage
    2.
    发明申请
    Transmitter stage 审中-公开
    发射台

    公开(公告)号：US20060008029A1

    公开(公告)日：2006-01-12

    申请号：US11155838

    申请日：2005-06-17

    申请人： Houman Jafari ,  Ralf Burdenski ,  Gerald Ulbricht

    发明人： Houman Jafari ,  Ralf Burdenski ,  Gerald Ulbricht

    IPC分类号： H04K1/02

    CPC分类号： H04L27/2017 ,  H04L27/34

    摘要： A transmitter stage working according to the envelope restoration principle includes means for providing an amplitude representation and a phase representation of an amplitude and phase-modulated signal to be transmitted, as well as a phase-locked loop with a feed-forward branch and a feedback branch, as well as amplification control means formed to convert the amplitude representation to an amplification control signal, which may be fed into the amplification control input of a nonlinear power amplifier. In the feed-forward branch, a digital/analog converter is arranged. Furthermore, in the feedback branch, an analog/digital converter is arranged, so that the phase detector of the phase-locked loop is implemented in digital form. By an as large as possible proportion of digital signal processing, an inexpensively implementable and exactly working transmitter stage is obtained.

    摘要翻译： 根据包络恢复原理工作的发射机级包括用于提供要发射的幅度和相位调制信号的幅度表示和相位表示的装置，以及具有前馈分支和反馈的锁相环 分支，以及被形成为将振幅表示转换成可以被馈送到非线性功率放大器的放大控制输入的放大控制信号的放大控制装置。 在前馈分支中，配置了数字/模拟转换器。 此外，在反馈分支中，配置有模拟/数字转换器，使得锁相环的相位检测器以数字形式实现。 通过尽可能多的数字信号处理比例，可以获得廉价可实现和精确工作的发射机级。

    Multibeam x-ray source with intelligent electronic control systems and related methods
    3.
    发明授权
    Multibeam x-ray source with intelligent electronic control systems and related methods 有权
    具有智能电子控制系统的多光束X射线源及相关方法

    公开(公告)号：US08447013B2

    公开(公告)日：2013-05-21

    申请号：US13069286

    申请日：2011-03-22

    申请人： Frank Sprenger ,  Moritz Beckmann ,  Yuan Cheng ,  Houman Jafari

    发明人： Frank Sprenger ,  Moritz Beckmann ,  Yuan Cheng ,  Houman Jafari

    IPC分类号： H01J35/00

    CPC分类号： H01J35/065 ,  A61B6/4028 ,  A61B6/4064 ,  H01J35/04 ,  H01J35/14 ,  H01J2201/30469 ,  H01J2235/062 ,  H01J2235/068 ,  H05G1/30

    摘要： Multibeam field emission x-ray systems and related methods can include cathode elements, an anode assembly spaced from the plurality of cathode elements, and an extraction gate positioned between the plurality of cathode elements and the anode assembly. A potential difference can be applied between the extraction gate and at least one of the cathode elements to cause an emission of electrons from the respective cathode elements. Emission characteristics of the cathode elements can be measured, and the potential difference between the extraction gate and at least one of the cathode elements can be adjusted based on the emission characteristics measured.

    摘要翻译： 多光束场发射x射线系统和相关方法可以包括阴极元件，与多个阴极元件间隔开的阳极组件，以及位于多个阴极元件和阳极组件之间的提取门。 可以在提取栅极和至少一个阴极元件之间施加电位差以引起来自各个阴极元件的电子的发射。 可以测量阴极元件的发射特性，并且可以基于测量的发射特性来调节提取栅极和至少一个阴极元件之间的电势差。

    MULTIBEAM X-RAY SOURCE WITH INTELLIGENT ELECTRONIC CONTROL SYSTEMS AND RELATED METHODS
    5.
    发明申请
    MULTIBEAM X-RAY SOURCE WITH INTELLIGENT ELECTRONIC CONTROL SYSTEMS AND RELATED METHODS 有权
    具有智能电子控制系统的多频X射线源及相关方法

    公开(公告)号：US20110286581A1

    公开(公告)日：2011-11-24

    申请号：US13069286

    申请日：2011-03-22

    申请人： Frank Sprenger ,  Moritz Beckmann ,  Yuan Cheng ,  Houman Jafari

    发明人： Frank Sprenger ,  Moritz Beckmann ,  Yuan Cheng ,  Houman Jafari

    IPC分类号： H05G1/52 ,  H01J35/06 ,  B82Y99/00

    CPC分类号： H01J35/065 ,  A61B6/4028 ,  A61B6/4064 ,  H01J35/04 ,  H01J35/14 ,  H01J2201/30469 ,  H01J2235/062 ,  H01J2235/068 ,  H05G1/30

    摘要： Multibeam field emission x-ray systems and related methods can include cathode elements, an anode assembly spaced from the plurality of cathode elements, and an extraction gate positioned between the plurality of cathode elements and the anode assembly. A potential difference can be applied between the extraction gate and at least one of the cathode elements to cause an emission of electrons from the respective cathode elements. Emission characteristics of the cathode elements can be measured, and the potential difference between the extraction gate and at least one of the cathode elements can be adjusted based on the emission characteristics measured.

    摘要翻译： 多光束场发射x射线系统和相关方法可以包括阴极元件，与多个阴极元件间隔开的阳极组件，以及位于多个阴极元件和阳极组件之间的提取门。 可以在提取栅极和至少一个阴极元件之间施加电位差以引起来自各个阴极元件的电子的发射。 可以测量阴极元件的发射特性，并且可以基于测量的发射特性来调节提取栅极和至少一个阴极元件之间的电势差。

    Transmitting stage
    7.
    发明申请
    Transmitting stage 有权
    传输阶段

    公开(公告)号：US20050239422A1

    公开(公告)日：2005-10-27

    申请号：US11127607

    申请日：2005-05-12

    申请人： Houman Jafari ,  Ralf Burdenski

    发明人： Houman Jafari ,  Ralf Burdenski

    IPC分类号： H04B1/04 ,  H01Q11/12 ,  H03F1/00

    CPC分类号： H04B1/0475

    摘要： A transmission stage in polar loop technology includes an amplitude regulation means, a phase regulation means, a VCO and a feedback path. In the feedback path a variable amplifier is provided. The amplitude regulation means is further implemented in order to be controlled by a control means according to a request for a power variation in the output signal of the amplifier in order to correspondingly vary an amplitude control signal for the power amplifier. Simultaneously, the control means is implemented in order to correspondingly control the variable feedback path amplifier, so that the amplitude of the output signal of the variable feedback path amplifier remains in a narrowly limited predetermined range. Thus, power variations in the output signal of the amplifier operated in the non-linear area are held remote from the phase locked loop, so that the phase regulation means may be implemented at low cost and operates reliably anyway.

    摘要翻译： 极环技术的传输阶段包括幅度调节装置，相位调节装置，VCO和反馈路径。 在反馈路径中提供可变放大器。 幅度调节装置还被实现以便由控制装置根据对放大器的输出信号中的功率变化的请求进行控制，以便相应地改变功率放大器的幅度控制信号。 同时，实现控制装置以相应地控制可变反馈路径放大器，使得可变反馈路径放大器的输出信号的幅度保持在窄限制的预定范围内。 因此，在非线性区域中操作的放大器的输出信号中的功率变化保持远离锁相环，使得相位调节装置可以以低成本实现并且可靠地运行。