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    Mobile radio telephone with impedance matching network having two transformation factors
    1.
    发明授权
    Mobile radio telephone with impedance matching network having two transformation factors 有权
    具有阻抗匹配网络的移动无线电话具有两个变换因素

    公开(公告)号：US06223022B1

    公开(公告)日：2001-04-24

    申请号：US09217434

    申请日：1998-12-21

    申请人： Winfrid Birth ,  Ralf Burdenski ,  Christian Wünsch

    发明人： Winfrid Birth ,  Ralf Burdenski ,  Christian Wünsch

    IPC分类号： H04B146

    CPC分类号： H01P5/02

    摘要： A mobile radio telephone includes a transmitter output stage and an antenna. An impedance matching network is inserted between the transmitter output stage and the antenna. The matching network has a transformation factor (T) for adjusting the transmitter load impedance (ZPA) to match with the antenna input impedance (ZAAnt). The impedance matching network includes at least two impedance transformers that form at least two transformation factors by alternatively connecting in parallel the two impedance transformers.

    摘要翻译： 移动无线电话包括发射机输出级和天线。 在发射机输出级和天线之间插入阻抗匹配网络。 匹配网络具有用于调整发射机负载阻抗（ZPA）以与天线输入阻抗（ZAAnt）匹配的变换因子（T）。 阻抗匹配网络包括至少两个阻抗变换器，其通过并联连接两个阻抗变压器形成至少两个变换因子。

    Monitoring of a High-Frequency Transmit Device of a Magnetic Resonance Tomography System
    5.
    发明申请
    Monitoring of a High-Frequency Transmit Device of a Magnetic Resonance Tomography System 有权
    监测磁共振层析成像系统的高频发射装置

    公开(公告)号：US20140113577A1

    公开(公告)日：2014-04-24

    申请号：US14057793

    申请日：2013-10-18

    申请人： Olaf Behrendt ,  Pascal Mühlich ,  Volker Schnetter ,  Christian Wünsch

    发明人： Olaf Behrendt ,  Pascal Mühlich ,  Volker Schnetter ,  Christian Wünsch

    IPC分类号： H04B17/00

    CPC分类号： H04L65/4076 ,  H04B17/101

    摘要： A method for monitoring a high-frequency transmit device of a magnetic resonance tomography system with a transmit antenna system having a plurality of transmit channels is provided. A reference transmit signal is output on different transmit channels of the transmit antenna system, respectively, at different time points, and a reference measurement signal induced by the reference transmit signal is measured on at least one of the other transmit channels using a measuring device assigned to the transmit channel. Based on the reference measurement signal, a phase deviation indicator value is determined. The phase deviation indicator value indicates a relative phase deviation between the measuring devices of the transmit channels in question.

    摘要翻译： 提供了一种利用具有多个发射信道的发射天线系统监测磁共振断层摄影系统的高频发射装置的方法。 参考发射信号分别在不同时间点在发射天线系统的不同发射信道上输出，并且使用分配的测量装置在至少一个其它发射信道上测量由参考发射信号引起的参考测量信号 到发送信道。 基于参考测量信号，确定相位偏差指标值。 相位偏差指示值表示所讨论的发射信道的测量装置之间的相对相位偏差。

    Emission of High Frequency Pulses in a Magnetic Resonance Tomography System
    6.
    发明申请
    Emission of High Frequency Pulses in a Magnetic Resonance Tomography System 审中-公开
    磁共振层析成像系统中高频脉冲的发射

    公开(公告)号：US20130229180A1

    公开(公告)日：2013-09-05

    申请号：US13784797

    申请日：2013-03-04

    申请人： Nikolaus Demharter ,  Klaus Huber ,  Claus Seisenberger ,  Thorsten Speckner ,  Markus Vester ,  Christian Wünsch

    发明人： Nikolaus Demharter ,  Klaus Huber ,  Claus Seisenberger ,  Thorsten Speckner ,  Markus Vester ,  Christian Wünsch

    IPC分类号： G01R33/54

    CPC分类号： G01R33/543 ,  G01R33/3614

    摘要： A method for emitting a sequence of high frequency pulses that may have different envelopes in a magnetic resonance tomography system is provided. A digital instruction signal that specifies the envelope for the high frequency pulses that are to be emitted is received. A digital control signal is transmitted to a high frequency unit for generating high frequency pulses, depending on the instruction signal. A test signal that allows notification of a current overload situation is received. The current control signal is reduced if the test signal indicates an overload situation.

    摘要翻译： 提供了一种在磁共振断层摄影系统中发射可能具有不同包络的高频脉冲序列的方法。 接收指定要发射的高频脉冲的包络的数字指令信号。 根据指示信号，数字控制信号被发送到用于产生高频脉冲的高频单元。 接收允许通知当前过载情况的测试信号。 如果测试信号表示过载情况，则电流控制信号减小。

    Monitoring of a high-frequency transmit device of a magnetic resonance tomography system
    8.
    发明授权
    Monitoring of a high-frequency transmit device of a magnetic resonance tomography system 有权
    监测磁共振断层摄影系统的高频发射装置

    公开(公告)号：US09100111B2

    公开(公告)日：2015-08-04

    申请号：US14057793

    申请日：2013-10-18

    申请人： Olaf Behrendt ,  Pascal Mühlich ,  Volker Schnetter ,  Christian Wünsch

    发明人： Olaf Behrendt ,  Pascal Mühlich ,  Volker Schnetter ,  Christian Wünsch

    IPC分类号： A61B5/05 ,  H04B17/00 ,  H04B17/10

    CPC分类号： H04L65/4076 ,  H04B17/101

    摘要： A method for monitoring a high-frequency transmit device of a magnetic resonance tomography system with a transmit antenna system having a plurality of transmit channels is provided. A reference transmit signal is output on different transmit channels of the transmit antenna system, respectively, at different time points, and a reference measurement signal induced by the reference transmit signal is measured on at least one of the other transmit channels using a measuring device assigned to the transmit channel. Based on the reference measurement signal, a phase deviation indicator value is determined. The phase deviation indicator value indicates a relative phase deviation between the measuring devices of the transmit channels in question.

    摘要翻译： 提供了一种利用具有多个发射信道的发射天线系统监测磁共振断层摄影系统的高频发射装置的方法。 参考发射信号分别在不同时间点在发射天线系统的不同发射信道上输出，并且使用分配的测量装置在至少一个其它发射信道上测量由参考发射信号引起的参考测量信号 到发送信道。 基于参考测量信号，确定相位偏差指标值。 相位偏差指示值表示所讨论的发射信道的测量装置之间的相对相位偏差。