公开(公告)号：US09935350B2

公开(公告)日：2018-04-03

申请号：US14972304

申请日：2015-12-17

Applicant: Ralph Oppelt

Inventor： Ralph Oppelt

IPC: H01P5/02 ,  H01P1/22 ,  H01P5/12

CPC classification number: H01P1/225

Abstract: A device for damping a standing wave on a waveguide carrying a signal is provided. The device includes at least one pair of an impedance-up-transforming and an impedance-down-transforming Boucherot bridge is connected into the waveguide. The two Boucherot bridges bring about locally increased impedances and inductance values, with the result that a significantly improved standing wave suppression or damping is obtained. The down-transforming Boucherot bridge is connected directly behind the up-transforming bridge, with the result that down-transformation to the original impedance of the waveguide again can be carried out and a signal reflection can thus be avoided.

公开(公告)号：US09817089B2

公开(公告)日：2017-11-14

申请号：US13722606

申请日：2012-12-20

Applicant: Stephan Biber ,  Jan Bollenbeck ,  Ralph Oppelt ,  Georg Rauh ,  Wilfried Schnell ,  Markus Vester

Inventor： Stephan Biber ,  Jan Bollenbeck ,  Ralph Oppelt ,  Georg Rauh ,  Wilfried Schnell ,  Markus Vester

IPC: G01R33/30 ,  G01R33/3415 ,  G01R33/36 ,  G01R33/563

CPC classification number: G01R33/30 ,  G01R33/3415 ,  G01R33/3664 ,  G01R33/56383

Abstract: 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.

公开(公告)号：US08866482B2

公开(公告)日：2014-10-21

申请号：US13183065

申请日：2011-07-14

Applicant: Jan Bollenbeck ,  Ralph Oppelt

Inventor： Jan Bollenbeck ,  Ralph Oppelt

IPC: G01V3/00 ,  G01R33/36 ,  A61B5/055

CPC classification number: G01R33/3621 ,  A61B5/055

Abstract: A preprocessing circuit for receive signals of a local coil in a magnetic resonance facility (1) includes an arrangement for supplying at least one auxiliary frequency signal of an auxiliary frequency. For at least one or the auxiliary frequency signal, a frequency multiplier generates the auxiliary frequency signal from an intermediate signal transmitted from a receive system of the magnetic resonance facility by way of a transmission link. The multiplier generates the auxiliary frequency signal with a frequency corresponding to a whole-number fraction of the auxiliary frequency.

Abstract translation: 用于在磁共振设备（1）中本地线圈的接收信号的预处理电路包括用于提供辅助频率的至少一个辅助频率信号的装置。 对于至少一个或辅助频率信号，倍频器通过传输链路从由磁共振设备的接收系统发送的中间信号产生辅助频率信号。 乘法器产生具有对应于辅助频率的全分数的频率的辅助频率信号。

公开(公告)号：US20140062480A1

公开(公告)日：2014-03-06

申请号：US14018139

申请日：2013-09-04

Applicant: Jan Bollenbeck ,  Ralph Oppelt ,  Markus Vester

Inventor： Jan Bollenbeck ,  Ralph Oppelt ,  Markus Vester

IPC: G01R33/54

CPC classification number: G01R33/54 ,  G01R33/3415 ,  G01R33/3621 ,  G01R33/3692

Abstract: 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.

Abstract translation: 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：US20120020259A1

公开(公告)日：2012-01-26

申请号：US13183065

申请日：2011-07-14

Applicant: Jan Bollenbeck ,  Ralph Oppelt

Inventor： Jan Bollenbeck ,  Ralph Oppelt

IPC: H04J1/00 ,  H04L5/00

CPC classification number: G01R33/3621 ,  A61B5/055

Abstract: A preprocessing circuit for receive signals of a local coil in a magnetic resonance facility (1) includes an arrangement for supplying at least one auxiliary frequency signal of an auxiliary frequency. For at least one or the auxiliary frequency signal, a frequency multiplier generates the auxiliary frequency signal from an intermediate signal transmitted from a receive system of the magnetic resonance facility by way of a transmission link. The multiplier generates the auxiliary frequency signal with a frequency corresponding to a whole-number fraction of the auxiliary frequency.

Abstract translation: 用于在磁共振设备（1）中本地线圈的接收信号的预处理电路包括用于提供辅助频率的至少一个辅助频率信号的装置。 对于至少一个或辅助频率信号，倍频器通过传输链路从由磁共振设备的接收系统发送的中间信号产生辅助频率信号。 乘法器产生具有对应于辅助频率的全分数的频率的辅助频率信号。

公开(公告)号：US07977944B2

公开(公告)日：2011-07-12

申请号：US12369041

申请日：2009-02-11

Applicant: Ralph Oppelt ,  Wolfgang Renz ,  Wilfried Schnell

Inventor： Ralph Oppelt ,  Wolfgang Renz ,  Wilfried Schnell

IPC: G01V3/00

CPC classification number: G01R33/3415 ,  G01R33/3403 ,  G01R33/34046 ,  G01R33/34076 ,  G01R33/3614 ,  G01R33/5659

Abstract: An apparatus to control an antenna arrangement in a magnetic resonance apparatus has an amplifier with an input connected to a radio-frequency transmission signal to be amplified. The antenna arrangement has at least one antenna element for emission of the amplified transmission signal. The antenna element has an infeed point with two terminals, wherein the amplified transmission signal is connected at the terminals. The amplifier is connected on the output side with two terminals of the infeed point. The antenna element has at the infeed point, a mounting surface to accommodate the amplifier.

Abstract translation: 用于控制磁共振装置中的天线布置的装置具有放大器，其输入端连接到要放大的射频传输信号。 天线装置具有用于发射放大的发射信号的至少一个天线元件。 天线元件具有两个端子的馈电点，其中放大的发送信号在端子处连接。 放大器在输出侧连接有两个馈电点的端子。 天线元件在馈电点处具有用于容纳放大器的安装表面。

公开(公告)号：US07834628B2

公开(公告)日：2010-11-16

申请号：US12243038

申请日：2008-10-01

Applicant: Stephan Biber ,  Jan Bollenbeck ,  Ralph Oppelt ,  Markus Vester

Inventor： Stephan Biber ,  Jan Bollenbeck ,  Ralph Oppelt ,  Markus Vester

IPC: G01V3/00

CPC classification number: G01R33/3415 ,  G01R33/3621 ,  G01R33/3664 ,  G01R33/3692

Abstract: An arrangement to transmit magnetic resonance signals has at least two reception branches. Each reception branch contains a single antenna of a local coil as well as an amplifier connected with the single antenna, such that an amplified magnetic resonance signal is formed from a magnetic resonance signal that is acquired via the single antenna. In a multiplexer, each input is connected with a respective reception branch, such that the amplified magnetic resonance signals of the reception branch are combined by the multiplexer into a resulting signal using a time multiplexing method. A transmission path is connected on one side with an output of the multiplexer and on the other side with a receiver, such that the resulting signal is transmitted from the multiplexer to the receiver via the transmission path.

Abstract translation: 传输磁共振信号的装置具有至少两个接收分支。 每个接收分支包含本地线圈的单个天线以及与单个天线连接的放大器，使得经由单个天线获取的磁共振信号形成放大的磁共振信号。 在多路复用器中，每个输入与相应的接收分支相连，使得接收分支的放大的磁共振信号由多路复用器使用时间复用方法组合成结果信号。 传输路径在一侧与多路复用器的输出端连接，另一侧与接收器连接，使得所得到的信号经由传输路径从多路复用器传输到接收器。

公开(公告)号：US20100157859A1

公开(公告)日：2010-06-24

申请号：US12645829

申请日：2009-12-23

Applicant: Ralph Oppelt ,  Markus Vester

Inventor： Ralph Oppelt ,  Markus Vester

IPC: H04B7/185 ,  H04L5/00

CPC classification number: G08C15/02 ,  G01R33/341 ,  G01R33/3415 ,  G01R33/3657 ,  H04J1/08

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20100117653A1

公开(公告)日：2010-05-13

申请号：US12616855

申请日：2009-11-12

Applicant: Ralph Oppelt

Inventor： Ralph Oppelt

IPC: H03H7/46 ,  G01V3/00 ,  H03H7/38

CPC classification number: H03H7/463 ,  H03H7/38

Abstract: A diplex filter is formed by two impedance-transforming filters with separate transmission frequency ranges and with separate cut-off frequency ranges and a connection node at which two series elements of the two filters are connected. These two series elements are each fashioned as a parallel oscillating circuit, each parallel oscillating circuit exhibiting a predetermined reactance in a midband of the respective transmission frequency range and a parallel resonance in a midband of the respective cut-off frequency range. The diplex filter can be realized in a simple and cost-effective manner without ferrite-containing special components, for instance inductively coupled coils or tapped coils thereby allowing use thereof in a magnetic resonance tomograph, for example.

Abstract translation: 双工滤波器由具有单独的传输频率范围和分离的截止频率范围的两个阻抗变换滤波器以及两个滤波器的两个串联元件连接的连接节点形成。 这两个串联元件各自被形成为并联振荡电路，每个并联振荡电路在相应的发送频率范围的中间带中呈现预定的电抗，并且在相应截止频率范围的中间带中呈现并联谐振。 双工滤波器可以以简单且成本有效的方式实现，不含铁素体的特殊部件，例如电感耦合线圈或抽头线圈，从而允许在例如磁共振断层扫描仪中使用它们。

公开(公告)号：US07672649B2

公开(公告)日：2010-03-02

申请号：US11744291

申请日：2007-05-04

Applicant: Klaus Huber ,  Ralph Oppelt

Inventor： Klaus Huber ,  Ralph Oppelt

IPC: H01Q11/12 ,  H04B1/00

CPC classification number: H03G3/3036 ,  G01R33/3621 ,  H03F1/3247 ,  H03F1/3282 ,  H03F1/3294 ,  H03F2200/195 ,  H03F2200/207 ,  H03F2200/336 ,  H03F2200/451 ,  H03G1/04

Abstract: A controller for an RF amplifier, in particular for a RF amplifier of an MR tomography apparatus, has an IQ control element for adjusting the magnitude and phase an RF signal that is be fed to the RF amplifier. The IQ control element has a signal splitter that splits the RF signal into two partial signals having a 90° phase offset in an I path and a Q path, each having a multiplier for multiplying the partial signal by an I factor in the I path and a Q factor in the Q path. A summing unit recombines the partial signals. A detector determines the actual phase difference and actual amplification between the RF signal fed to the IQ control element and the RF signal amplified by the RF amplifier. An IQ controller determines the I factor and the Q factor from the actual difference and a desired phase difference and the actual amplifier and a desired amplification. The IQ controller has an operating point at which the I factor and the Q factor are the same magnitude if the actual and desired phase differences and the actual and desired amplifications are the same.

Abstract translation: 用于RF放大器的控制器，特别是用于MR断层摄影装置的RF放大器的控制器具有用于调整幅度和相位的IQ控制元件，RF信号被馈送到RF放大器。 IQ控制元件具有信号分离器，其将RF信号分解成在I路径和Q路径中具有90°相位偏移的两个部分信号，每个具有用于将该部分信号乘以I路径中的I因子的乘法器和Q路径， Q路径中的Q因子。 求和单元重新组合部分信号。 检测器确定馈送到IQ控制元件的RF信号与由RF放大器放大的RF信号之间的实际相位差和实际放大。 IQ控制器根据实际差异和所需的相位差以及实际的放大器和所需的放大率来确定I因子和Q因子。 如果实际和所需的相位差以及实际和所需的放大倍数相同，则IQ控制器具有I因子和Q因子的幅度相同的工作点。