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21. 发明授权

US5609154A Duplexer including a variable capacitance diode for an ultrasound imaging system 失效
标题翻译：双工器包括用于超声成像系统的可变电容二极管
公开(公告)号：US5609154A
公开(公告)日：1997-03-11
申请号：US425631
申请日：1995-04-20
申请人： Ralph Oppelt , Markus Vester
发明人： Ralph Oppelt , Markus Vester
IPC分类号： G01S7/523 , G10K11/34 , H03K17/76 , A61B8/00
CPC分类号： H03K17/76 , G01S7/523 , G10K11/341
摘要： A duplexer for an ultrasound imaging-system capable of selectively coupling a transducer element to either a transmitter or a receiver, depending on whether the imaging system is in the transmit mode or receive mode, contains a variable capacitance diode which is connected in a direction opposite that of transmit pulses emitted by the transmitter between the transducer element and the receiver. In this manner, one obtains an improved duplexer that operates with virtually no power loss, without drive circuits, without leakage currents, and with low noise.
摘要翻译：根据成像系统是处于发射模式还是接收模式，能够选择性地将换能器元件耦合到发射器或接收器的超声成像系统的双工器包含可变电容二极管，其以相反的方向连接发射机在传感器元件和接收器之间发射的发射脉冲。以这种方式，获得一种改进的双工器，其实际上没有功率损耗，没有驱动电路，没有漏电流，并且噪声低。

22. 发明授权

US07737787B2 Impedance-mapping amplifier circuit with exclusively reactive negative feedback 有权
标题翻译：具有独立反应负反馈的阻抗映射放大器电路
公开(公告)号：US07737787B2
公开(公告)日：2010-06-15
申请号：US12331512
申请日：2008-12-10
申请人： Ralph Oppelt , Markus Vester
发明人： Ralph Oppelt , Markus Vester
IPC分类号： H03F3/04
CPC分类号： H03F1/34 , H03F1/26 , H03F1/42 , H03F1/56 , H03F3/195 , H03F2200/147 , H03F2200/36 , H03F2200/372
摘要： An amplifier circuit has a transistor element that has an input terminal, an output terminal) and a third terminal. An input signal to be amplified is supplied to the input terminal. The amplified input signal is emitted as an output signal at the output terminal. The input terminal is connected with the output terminal via a first reactance. The third terminal is connected via a second reactance with a zero potential. One of the reactances is fashioned as an inductor and the other of the reactances is fashioned as a capacitor. An inductance value of the inductor and a capacitance value of the capacitor are dimensioned such that the quotient of the inductance value of the inductor and the capacitance value of the capacitor is equal to the product of a desired input impedance that is effective at the input terminal and an output impedance associated with the output impedance. Based on this dimensioning, the output impedance associated with the output terminal is mapped to the input terminal at the same level or scaled.
摘要翻译：放大器电路具有晶体管元件，其具有输入端子，输出端子）和第三端子。要放大的输入信号被提供给输入端。放大的输入信号作为输出端子处的输出信号发出。输入端通过第一电抗与输出端连接。第三端子经由具有零电位的第二电抗连接。其中一个电抗被形成为一个电感，另一个是电抗器。电感器的电感值和电容器的电容值被设定为使得电感器的电感值和电容器的电容值的商数等于在输入端子处有效的期望的输入阻抗的乘积以及与输出阻抗相关联的输出阻抗。基于此尺寸，与输出端子相关联的输出阻抗被映射到相同电平或缩放的输入端子。

23. 发明申请

US20090286478A1 ARRANGEMENT TO TRANSMIT MAGNETIC RESONANCE SIGNALS 有权
标题翻译：发射磁共振信号的安排
公开(公告)号：US20090286478A1
公开(公告)日：2009-11-19
申请号：US12465147
申请日：2009-05-13
申请人： Stephan Biber , Jan Bollenbeck , Ralph Oppelt , Markus Vester
发明人： Stephan Biber , Jan Bollenbeck , Ralph Oppelt , Markus Vester
IPC分类号： H04B7/00
CPC分类号： G01R33/3664 , G01R33/3415 , G01R33/3607 , G01R33/3621 , G01R33/3635
摘要： An arrangement for transmitting magnetic resonance signals, with a transmission link that connects a local coil with a receiver, has a first channel of the local coil with a first single antenna to acquire a first magnetic resonance signal, as well as a first mixer connected with the first single antenna. The first mixer forms an intermediate-frequency first signal from the supplied first magnetic resonance signal. A second channel of the local coil has a second single antenna to acquire a second magnetic resonance signal, as well as a second mixer connected with the second single antenna. The second mixer forms an intermediate-frequency second signal from the supplied second magnetic resonance signal. The local coil has a device for signal combination that, by frequency multiplexing, that combines the intermediate-frequency first signal of the first channel and the intermediate-frequency second signal of the second channel so that it arrives at the receiver via the transmission path. The receiver has an A/D converter at which one of the transmitted intermediate-frequency signals of an associated channel arrives in order to be sampled with a sampling frequency for digitization. For frequency conversion, a first local oscillator frequency is connected at the first mixer and a second local oscillator frequency is connected at the second mixer. the first and second local oscillator frequencies are selected such that intermediate-frequencies formed by the frequency conversion are mirror-symmetrical relative to the sampling frequency of the A/D converter.
摘要翻译：用于传输磁共振信号的装置，具有将本地线圈与接收器连接的传输链路，具有本地线圈的第一通道和第一单个天线以获取第一磁共振信号，以及与第第一单天线。第一混频器从所提供的第一磁共振信号形成中频第一信号。本地线圈的第二通道具有用于获取第二磁共振信号的第二单个天线，以及与第二单个天线连接的第二混频器。第二混频器从所提供的第二磁共振信号形成中频第二信号。本地线圈具有用于信号组合的装置，通过频率复用，组合第一通道的中频第一信号和第二通道的中频第二信号，使得其经由传输路径到达接收器。接收机具有A / D转换器，在该A / D转换器中，相关信道的所发送的中频信号中的一个到达，以便以用于数字化的采样频率进行采样。对于频率转换，在第一混频器处连接第一本地振荡器频率，在第二混频器处连接第二本地振荡器频率。选择第一和第二本地振荡器频率，使得由频率变换形成的中频相对于A / D转换器的采样频率是镜像对称的。

24. 发明授权

US06864747B1 Amplifier device with an adjustable operating-control 有权
标题翻译：具有可调操作控制功能的放大器
公开(公告)号：US06864747B1
公开(公告)日：2005-03-08
申请号：US09958717
申请日：2000-04-04
申请人： Ralph Oppelt , Markus Vester
发明人： Ralph Oppelt , Markus Vester
IPC分类号： H03F1/34 , H03F1/30 , H03F1/32 , H03F3/18 , H03F3/26 , H03G3/10
CPC分类号： H03F1/307 , H03F1/3217
摘要： A device for amplifying an input signal comprising a semiconductor unit having at least one semiconductor component, and circuit for setting an operating point of the semiconductor unit. The circuit is designed such that during amplification of the input signal, an operating point of the semiconductor unit can be varied automatically and independently for a measured value, in accordance with a predetermined profile of a maximum possible signal amplitude of the input signal between a distortion-optimized setting, for high maximum possible signal amplitude and a noise-optimized setting for a low maximum possible signal amplitude.
摘要翻译：一种用于放大输入信号的装置，包括具有至少一个半导体部件的半导体单元和用于设定半导体单元的工作点的电路。该电路被设计成使得在输入信号的放大期间，半导体单元的工作点可以针对测量值而自动且独立地改变，根据输入信号的最大可能信号幅度的预定曲线优化的设置，用于最大可能的最大信号幅度和噪声优化设置，用于低最大可能的信号幅度。

25. 发明申请

US20170219667A1 Planar Standing Wave Trap for a Magnetic Resonance Tomograph 审中-公开
公开(公告)号：US20170219667A1
公开(公告)日：2017-08-03
申请号：US15422136
申请日：2017-02-01
申请人： Andreas Fackelmeier , Klaus Huber , Sebastian Martius , Ralph Oppelt , Markus Vester
发明人： Andreas Fackelmeier , Klaus Huber , Sebastian Martius , Ralph Oppelt , Markus Vester
IPC分类号： G01R33/36 , G01R33/30
CPC分类号： G01R33/3685 , G01R33/30
摘要： A line with a standing wave trap for a magnetic resonance tomograph, and a patient couch and a magnetic resonance tomograph with the line are provided. The line includes a carrier material, a first conductor track that extends along the carrier material in the carrier material or on the carrier material, and a first conductor loop. The first conductor loop is arranged on or in the carrier material. The first conductor loop has a signal coupling to the first conductor track. The first conductor loop has a first interruption that is bridged with a first capacitance.

26. 发明授权

US08055196B2 Arrangement to transmit magnetic resonance signals 有权
标题翻译：传输磁共振信号的布置
公开(公告)号：US08055196B2
公开(公告)日：2011-11-08
申请号：US12465147
申请日：2009-05-13
申请人： Stephan Biber , Jan Bollenbeck , Ralph Oppelt , Markus Vester
发明人： Stephan Biber , Jan Bollenbeck , Ralph Oppelt , Markus Vester
IPC分类号： H04B7/00
CPC分类号： G01R33/3664 , G01R33/3415 , G01R33/3607 , G01R33/3621 , G01R33/3635
摘要： An arrangement for transmitting magnetic resonance signals, with a transmission link that connects a local coil with a receiver, has a first channel of the local coil with a first single antenna to acquire a first magnetic resonance signal, as well as a first mixer connected with the first single antenna. The first mixer forms an intermediate-frequency first signal from the supplied first magnetic resonance signal. A second channel of the local coil has a second single antenna to acquire a second magnetic resonance signal, as well as a second mixer connected with the second single antenna. The second mixer forms an intermediate-frequency second signal from the supplied second magnetic resonance signal. The local coil has a device for signal combination that, by frequency multiplexing, that combines the intermediate-frequency first signal of the first channel and the intermediate-frequency second signal of the second channel so that it arrives at the receiver via the transmission path. The receiver has an A/D converter at which one of the transmitted intermediate-frequency signals of an associated channel arrives in order to be sampled with a sampling frequency for digitization. For frequency conversion, a first local oscillator frequency is connected at the first mixer and a second local oscillator frequency is connected at the second mixer. the first and second local oscillator frequencies are selected such that intermediate-frequencies formed by the frequency conversion are mirror-symmetrical relative to the sampling frequency of the A/D converter.
摘要翻译：用于传输磁共振信号的装置，具有将本地线圈与接收器连接的传输链路，具有本地线圈的第一通道和第一单个天线以获取第一磁共振信号，以及与第第一单天线。第一混频器从所提供的第一磁共振信号形成中频第一信号。本地线圈的第二通道具有用于获取第二磁共振信号的第二单个天线，以及与第二单个天线连接的第二混频器。第二混频器从所提供的第二磁共振信号形成中频第二信号。本地线圈具有用于信号组合的装置，通过频率复用，组合第一通道的中频第一信号和第二通道的中频第二信号，使得其经由传输路径到达接收器。接收机具有A / D转换器，在该A / D转换器中，相关信道的所发送的中频信号中的一个到达，以便以用于数字化的采样频率进行采样。对于频率转换，在第一混频器处连接第一本地振荡器频率，在第二混频器处连接第二本地振荡器频率。选择第一和第二本地振荡器频率，使得由频率变换形成的中频相对于A / D转换器的采样频率是镜像对称的。

27. 发明授权

US08489025B2 Method for transmitting magnetic resonance signals with double frequency conversion 有权
标题翻译：用双频变频传输磁共振信号的方法
公开(公告)号：US08489025B2
公开(公告)日：2013-07-16
申请号：US13069272
申请日：2011-03-22
申请人： Stephan Biber , Jan Bollenbeck , Ralph Oppelt , Markus Vester
发明人： Stephan Biber , Jan Bollenbeck , Ralph Oppelt , Markus Vester
IPC分类号： H04B7/00
CPC分类号： G01R33/36 , G01R33/3621
摘要： Front bandpass filters that are essentially transmissive only between a minimum frequency and a maximum frequency filter the magnetic resonance signals. Front frequency mixers mix output signals of each of the bandpass filters with a front LO frequency that is standard for all the magnetic resonance signals. Rear bandpass filters that are essentially transmissive only around a front intermediate frequency filter the output signals of the front frequency mixers. Rear frequency mixers mix output signals of each of the rear bandpass filters with a respective constant rear LO frequency. Frequency filters that are transmissive for frequencies in the range of the difference of the rear LO frequency that is supplied to the rear frequency mixer arranged upstream thereof and the front intermediate frequency filter the output signals of the rear frequency mixers. Output signals of the frequency filters are combined into a common signal, which is transmitted onward.
摘要翻译：仅在最小频率和最大频率之间基本上透射的前带通滤波器对磁共振信号进行滤波。前置混频器将每个带通滤波器的输出信号与前置的LO频率混合，这是所有磁共振信号的标准。后置带通滤波器，其基本上仅在前置中频上滤波前频率混频器的输出信号。后混频器将每个后带通滤波器的输出信号与相应的恒定后置LO频率混合。频率滤波器对于提供给布置在其上游的后部混频器的后部LO频率的差异范围内的频率以及前部中频滤波器的后部混频器的输出信号的频率进行透射。频率滤波器的输出信号被组合成公共信号，该公共信号向前发送。

28. 发明申请

US20130162253A1 SELECTION UNIT FOR A MAGNETIC RESONANCE IMAGING SYSTEM 有权
标题翻译：用于磁共振成像系统的选择单元
公开(公告)号：US20130162253A1
公开(公告)日：2013-06-27
申请号：US13722606
申请日：2012-12-20
申请人： Stephan Biber , Jan Bollenbeck , Ralph Oppelt , Georg Rauh , Wilfried Schnell , Markus Vester
发明人： Stephan Biber , Jan Bollenbeck , Ralph Oppelt , Georg Rauh , Wilfried Schnell , Markus Vester
IPC分类号： G01R33/30
CPC分类号： G01R33/30 , G01R33/3415 , G01R33/3664 , G01R33/56383
摘要： A selection unit for a magnetic resonance imaging system may be provided. The selection unit electrically connects a first number of electrical terminals to a second number of communication entities. The selection unit is arranged in and/or on a mobile object-support element for moving an examination object which is to be depicted by the magnetic resonance imaging system into a recording position.
摘要翻译：可以提供用于磁共振成像系统的选择单元。选择单元将第一数量的电端子电连接到第二数量的通信实体。选择单元布置在移动物体支撑元件中和/或上，用于将要由磁共振成像系统描绘的检查对象移动到记录位置。

29. 发明申请

US20090179705A1 IMPEDANCE-MAPPING AMPLIFIER CIRCUIT WITH EXCLUSIVELY REACTIVE NEGATIVE FEEDBACK 有权
标题翻译：具有独特反应性负反馈的阻抗映射放大器电路
公开(公告)号：US20090179705A1
公开(公告)日：2009-07-16
申请号：US12331512
申请日：2008-12-10
申请人： Ralph Oppelt , Markus Vester
发明人： Ralph Oppelt , Markus Vester
IPC分类号： H03F1/00
CPC分类号： H03F1/34 , H03F1/26 , H03F1/42 , H03F1/56 , H03F3/195 , H03F2200/147 , H03F2200/36 , H03F2200/372
摘要： An amplifier circuit has a transistor element that has an input terminal, an output terminal) and a third terminal. An input signal to be amplified is supplied to the input terminal. The amplified input signal is emitted as an output signal at the output terminal. The input terminal is connected with the output terminal via a first reactance. The third terminal is connected via a second reactance with a zero potential. One of the reactances is fashioned as an inductor and the other of the reactances is fashioned as a capacitor. An inductance value of the inductor and a capacitance value of the capacitor are dimensioned such that the quotient of the inductance value of the inductor and the capacitance value of the capacitor is equal to the product of a desired input impedance that is effective at the input terminal and an output impedance associated with the output impedance. Based on this dimensioning, the output impedance associated with the output terminal is mapped to the input terminal at the same level or scaled.
摘要翻译：放大器电路具有晶体管元件，其具有输入端子，输出端子）和第三端子。要放大的输入信号被提供给输入端。放大的输入信号作为输出端子处的输出信号发出。输入端通过第一电抗与输出端连接。第三端子经由具有零电位的第二电抗连接。其中一个电抗被形成为一个电感，另一个是电抗器。电感器的电感值和电容器的电容值被设定为使得电感器的电感值和电容器的电容值的商数等于在输入端子处有效的期望的输入阻抗的乘积以及与输出阻抗相关联的输出阻抗。基于此尺寸，与输出端子相关联的输出阻抗被映射到相同电平或缩放的输入端子。

30. 发明授权

US07064628B2 Crossbar switch 有权
标题翻译：交叉开关
公开(公告)号：US07064628B2
公开(公告)日：2006-06-20
申请号：US10917913
申请日：2004-08-13
申请人： Ralph Oppelt , Markus Vester
发明人： Ralph Oppelt , Markus Vester
IPC分类号： H01P1/10 , H01P1/15
CPC分类号： H04L49/101
摘要： A crossbar switch comprises a number of crossing points at which controllable switch elements are arranged, via which an input signal supplied to a row can be interconnected to a column intersecting this row at this crossing point when an interconnection signal is supplied to the respective setting parameter via a control input. The controllable switch elements comprise amplifier elements whose amplifier inputs are connected with the rows and whose amplifier outputs are connected with the columns. The amplifier elements are wired such that they only consume electrical energy when the interconnection signal is supplied to the respective crossing point.
摘要翻译：交叉开关包括多个交叉点，在该交叉点处布置有可控开关元件，当互连信号被提供给相应的设置参数时，提供给行的输入信号可以通过该交叉点互连到在该交叉点与该行相交的列通过控制输入。可控开关元件包括其放大器输入与行连接并且其放大器输出与列连接的放大器元件。放大器元件被布线，使得当互连信号被提供给相应的交叉点时它们仅消耗电能。

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