公开(公告)号：US5153517A

公开(公告)日：1992-10-06

申请号：US626442

申请日：1990-12-12

申请人： Ralph Oppelt ,  Wilhelm Duerr ,  Horst Siebold

发明人： Ralph Oppelt ,  Wilhelm Duerr ,  Horst Siebold

IPC分类号： A61B5/055 ,  G01R33/34 ,  G01R33/341

CPC分类号： G01R33/3678 ,  G01R33/341

摘要： A surface resonator for use in a magnetic resonance imaging apparatus having a transversal fundamental magnetic field is composed of two sub-systems, each generating a magnetic field with the magnetic fields being perpendicular relative to each other. Each sub-system contains two current loops, both of which enclose the magnetic field allocated to them in the same plane. A circularly polarizing surface resonator is thus obtained for the transversal fundamental magnetic field.

摘要翻译： 用于具有横向基本磁场的磁共振成像装置的表面谐振器由两个子系统组成，每个子系统产生磁场，磁场相对于彼此垂直。 每个子系统包含两个电流回路，两个电流环都包含在同一平面上分配给它们的磁场。 因此获得了用于横向基本磁场的圆偏振面谐振器。

公开(公告)号：US5144239A

公开(公告)日：1992-09-01

申请号：US565137

申请日：1990-08-10

申请人： Ralph Oppelt ,  Horst Siebold

发明人： Ralph Oppelt ,  Horst Siebold

IPC分类号： A61B5/055 ,  G01R33/34 ,  G01R33/341

CPC分类号： G01R33/3678 ,  G01R33/34076 ,  G01R33/34007

摘要： A circularly polarizing RF antenna suitable for use in a magnetiic resonance imaging tomography apparatus has four current loops, each formed by two U-shaped conductors with the ends of the lateral legs of the U-shaped conductors disposed opposite to each other in mirror-symmetric fashion, and the ends of the lateral legs being bridged by a resonant capacitor. The current loops are arranged on a carrier which forms a portion of a hollow cylinder, and which is divided in an axial direction between two of the current loops, so that at least one of the current loops is removable without electrical contacts. A divisible RF antenna is thus achieved into which a head or a knee joint can be easily introduced for imaging.

摘要翻译： 适用于磁共振成像断层摄影装置的圆偏振RF天线具有四个电流回路，每个由两个U形导体形成，其U形导体的侧支腿的端部彼此相对设置成镜像对称 时尚，并且侧腿的端部被谐振电容器桥接。 电流回路布置在形成中空圆柱体的一部分并且在两个电流回路之间沿轴向方向分开的载体上，使得至少一个电流回路可移除而没有电接触。 因此可以实现可分割的RF天线，其中可以容易地引入头部或膝关节以用于成像。

公开(公告)号：US4592029A

公开(公告)日：1986-05-27

申请号：US503798

申请日：1983-06-13

申请人： Franz Altmann ,  Bernd Granz ,  Dieter Grenda ,  Ralph Oppelt

发明人： Franz Altmann ,  Bernd Granz ,  Dieter Grenda ,  Ralph Oppelt

IPC分类号： H04N5/335 ,  B06B1/06 ,  G01S15/89 ,  H01L25/11

CPC分类号： B06B1/0629 ,  H01L25/112 ,  H01L2924/0002 ,  H01L2924/3011

摘要： An array device having a plurality of stacked circuit boards, each having a recess in a flat side thereof which extends parallel to a narrow side; the recess containing electronic components. Control lines for the electronic components are arranged on a flat side of the circuit board. Each circuit board has a narrow side which is provided with electrodes which are ordered as a matrix in rows and columns. The electrodes of the circuit boards are each associated with a respective switchable amplifier. The switchable amplifiers are arranged one behind the other in the longitudinal direction of a recess, and are connected by respective conductors having substantially equal lengths for coupling the switchable amplifiers to their respective electrodes. A plurality of main control lines are arranged on the narrow sides of the circuit boards for connecting the control lines of the switchable amplifiers in the same column to one another. Thus, the number of electrodes in each row can be increased without being required to be an integral multiple of the inputs of electronic modules.

摘要翻译： 一种具有多个堆叠电路板的阵列器件，每个堆叠电路板均具有平行于窄边延伸的平坦侧凹槽; 所述凹部包含电子部件。 用于电子部件的控制线布置在电路板的平坦侧上。 每个电路板具有窄边，其具有以行和列排列成矩阵的电极。 电路板的电极各自与相应的可切换放大器相关联。 可切换放大器在凹部的纵向方向上一个接一个地布置，并且通过具有基本上相等长度的相应导体连接，以将可切换放大器耦合到它们各自的电极。 多个主控制线布置在电路板的窄边上，用于将同一列中的可切换放大器的控制线彼此连接。 因此，可以增加每行中的电极数量，而不需要是电子模块的输入的整数倍。

公开(公告)号：US09529067B2

公开(公告)日：2016-12-27

申请号：US14018139

申请日：2013-09-04

申请人： Jan Bollenbeck ,  Ralph Oppelt ,  Markus Vester

发明人： Jan Bollenbeck ,  Ralph Oppelt ,  Markus Vester

IPC分类号： G01R33/54 ,  G01R33/36 ,  G01R33/3415

CPC分类号： G01R33/54 ,  G01R33/3415 ,  G01R33/3621 ,  G01R33/3692

摘要： An arrangement for the transmission of magnetic resonance signals that are received with the aid of local coils is provided. The magnetic resonance signal is fed to an analog/digital converter and digitized by the analog/digital converter. The magnetic resonance signal is compressed in amplitude before being fed to the analog/digital converter, is low-pass filtered or band-pass filtered, and is expanded after digitization by the analog/digital converter. A clock rate that is higher by a factor 2n than a sampling rate n of the analog/digital converter (ADC) is used for the digital expander. A digital equalizing filter for compensating for a filter transmission function in a transition range may also be used.

摘要翻译： 提供了借助于本地线圈接收的用于传输磁共振信号的装置。 磁共振信号被馈送到模拟/数字转换器并由模拟/数字转换器数字化。 在馈送到模拟/数字转换器之前，磁共振信号以幅度被压缩，被低通滤波或带通滤波，并且在通过模拟/数字转换器数字化之后被扩展。 数字扩展器使用比模拟/数字转换器（ADC）的采样率n高2n倍的时钟速率。 也可以使用用于补偿过渡范围内的过滤器传递功能的数字均衡滤波器。

公开(公告)号：US09154106B2

公开(公告)日：2015-10-06

申请号：US13538805

申请日：2012-06-29

申请人： Ralph Oppelt

发明人： Ralph Oppelt

IPC分类号： H03H7/42 ,  G01R33/36 ,  H03H5/00 ,  H03H1/00

CPC分类号： H03H7/42 ,  G01R33/3685 ,  H03H2001/005

摘要： For broadband applications of a balun in a magnetic field, the balun includes at least three line transformers each having two transformer sides. At least two transformer sides of the balun that belong to different line transformers of the at least three line transformers are embodied for the same voltage drop at least in terms of magnitude. The at least two transformer sides of the balun are also embodied with an identical number of turns. Two transformer sides connected in parallel are replaced by a single coil, with the result that the balun may be produced from a five-wire structure.

摘要翻译： 对于在磁场中的平衡 - 不平衡转换器的宽带应用，平衡 - 不平衡变压器包括至少三个线变压器，每个变压器具有两个变压器侧。 属于至少三个线路变压器的不同线路变压器的平衡不平衡变换器的至少两个变压器侧至少在幅度方面被体现为相同的电压降。 平衡 - 不平衡变换器的至少两个变压器侧面也具有相同数量的匝数。 并联连接的两个变压器侧由单个线圈代替，结果是平衡 - 不平衡变压器可以由五线结构制成。

公开(公告)号：US20150244054A1

公开(公告)日：2015-08-27

申请号：US14618128

申请日：2015-02-10

申请人： Ralph Oppelt

发明人： Ralph Oppelt

IPC分类号： H01P5/18 ,  G01R33/36 ,  H03H7/38 ,  G01R33/34 ,  H01F30/02 ,  H01F38/14

CPC分类号： H01P5/18 ,  G01R33/34092 ,  G01R33/36 ,  H01F30/02 ,  H01F38/023 ,  H01F38/14 ,  H01F2038/026 ,  H01F2038/146 ,  H03H7/38 ,  H03H7/48

摘要： The embodiments relate to a directional coupler including, in each case, one connection for a first, a second, a third, and a fourth port. The coupler includes a first coupling network for providing the connection for the first port and a second coupling network for providing the connection for the second port. The first and second coupling networks are both connected to the connections for the third and fourth ports, wherein the second coupling network has a first inductance connected between the third port and an electrical reference potential, a first capacitance connected between the fourth port and the electrical reference potential, a second capacitance connected between the third port and the second port, and a second inductance connected between the fourth port and the second port.

摘要翻译： 实施例涉及一种定向耦合器，在每种情况下包括用于第一端口，第二端口，第三端口和第四端口的一个连接。 耦合器包括用于为第一端口提供连接的第一耦合网络和用于为第二端口提供连接的第二耦合网络。 第一和第二耦合网络都连接到用于第三和第四端口的连接，其中第二耦合网络具有连接在第三端口和电参考电位之间的第一电感，连接在第四端口与电气参考电位之间的第一电容 参考电位，连接在第三端口和第二端口之间的第二电容器，以及连接在第四端口和第二端口之间的第二电感器。

公开(公告)号：US20140009237A1

公开(公告)日：2014-01-09

申请号：US13934183

申请日：2013-07-02

申请人： Ralph Oppelt

发明人： Ralph Oppelt

IPC分类号： H03C3/00

CPC分类号： H03C3/00 ,  G01R33/36 ,  H03B2200/004 ,  H03B2201/011 ,  H03B2201/0208 ,  H03C3/22 ,  H03L7/099

摘要： A frequency modulator includes a first pair of diodes with two capacity diodes, and a second pair of diodes with two additional capacity diodes. The second pair of diodes is employed in parallel. The frequency modulator also includes a first modulator input for reception of a first modulation signal and a second modulator input for reception of a symmetrical second modulation signal. Both pairs of diodes are coupled to an oscillator unit.

摘要翻译： 频率调制器包括具有两个容量二极管的第一对二极管和具有两个附加容量二极管的第二对二极管。 第二对二极管并联使用。 频率调制器还包括用于接收第一调制信号的第一调制器输入和用于接收对称的第二调制信号的第二调制器输入。 两对二极管耦合到振荡器单元。

公开(公告)号：US08513998B2

公开(公告)日：2013-08-20

申请号：US13230627

申请日：2011-09-12

申请人： Ralph Oppelt

发明人： Ralph Oppelt

IPC分类号： H03K12/00

CPC分类号： H03K5/086 ,  H03K5/1565

摘要： A circuit for providing an AC signal includes an amplifier having an input and an output. A sinusoidal signal is applicable at the input of the amplifier. The output of the amplifier is connected to the input via a lowpass filter or via a part of the lowpass filter.

摘要翻译： 用于提供AC信号的电路包括具有输入和输出的放大器。 正弦信号可应用于放大器的输入端。 放大器的输出通过低通滤波器或低通滤波器的一部分连接到输入端。

公开(公告)号：US20130169375A1

公开(公告)日：2013-07-04

申请号：US13538805

申请日：2012-06-29

申请人： Ralph Oppelt

发明人： Ralph Oppelt

IPC分类号： H03H7/42

CPC分类号： H03H7/42 ,  G01R33/3685 ,  H03H2001/005

摘要： For broadband applications of a balun in a magnetic field, the balun includes at least three line transformers each having two transformer sides. At least two transformer sides of the balun that belong to different line transformers of the at least three line transformers are embodied for the same voltage drop at least in terms of magnitude. The at least two transformer sides of the balun are also embodied with an identical number of turns. Two transformer sides connected in parallel are replaced by a single coil, with the result that the balun may be produced from a five-wire structure.

摘要翻译： 对于在磁场中的平衡 - 不平衡转换器的宽带应用，平衡 - 不平衡变压器包括至少三个线变压器，每个变压器具有两个变压器侧。 属于至少三个线路变压器的不同线路变压器的平衡不平衡变换器的至少两个变压器侧至少在幅度方面被体现为相同的电压降。 平衡 - 不平衡变换器的至少两个变压器侧面也具有相同数量的匝数。 并联连接的两个变压器侧由单个线圈代替，结果是平衡 - 不平衡变压器可以由五线结构制成。

公开(公告)号：US08379549B2

公开(公告)日：2013-02-19

申请号：US12645829

申请日：2009-12-23

申请人： Ralph Oppelt ,  Markus Vester

发明人： Ralph Oppelt ,  Markus Vester

IPC分类号： H04L5/00

CPC分类号： G08C15/02 ,  G01R33/341 ,  G01R33/3415 ,  G01R33/3657 ,  H04J1/08

摘要： In a method and device for the transmission of a multiplicity of signals having different frequencies between a base station and a module situated at a location remote from the base station via a single, common cable connection, some of the signals being transmitted from the electronic assembly to the module and, in general simultaneously, the remaining signals are transmitted in the opposite direction. Each of the base station and the module has bandpass filter bank therein having a multiplicity of bandpass filters, the number thereof being a function of the number of channels to be transmitted, with which the respectively received signals are spectrally separated from one another so that they are available for further signal processing in the base station, or for further use in the module.

摘要翻译： 在用于通过单个公共电缆连接在位于远离基站的位置的基站和模块之间传输具有不同频率的多个信号的方法和装置中，一些信号从电子组件传送 并且通常同时地，剩余的信号以相反方向传输。 基站和模块中的每一个具有带通滤波器组，其中具有多个带通滤波器，其数量是要发送的信道数量的函数，分别接收的信号彼此频谱分离，使得它们 可用于在基站中进一步的信号处理，或用于模块中的进一步使用。