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41. 发明授权

US4725782A Antenna structure for exciting and/or receiving RF fields in an NMR tomography apparatus 失效
标题翻译：在NMR层析成像装置中用于激发和/或接收RF场的天线结构
公开(公告)号：US4725782A
公开(公告)日：1988-02-16
申请号：US36797
申请日：1987-04-10
申请人： Ralph Oppelt , Wilhelm Duerr
发明人： Ralph Oppelt , Wilhelm Duerr
IPC分类号： A61B10/00 , A61B5/055 , G01R33/32 , G01R33/34 , G01R33/422 , G01R33/20
CPC分类号： G01R33/422
摘要： An antenna structure for exciting a substantially homogeneous magnetic RF field and/or for receiving RF signals in a nuclear magnetic resonance tomography apparatus includes a hollow cylindrical conductor sheath which is substantially transmissive at low frequencies for gradient magnetic fields, a number of conductor units within the conductor sheath, each conductor unit including at least one conductor element, and RF reflector disposed at the end faces of the antenna structure and an external energy feed or reception device. In this antenna structure, the current drop which increasingly occurs toward the end faces of the antenna structure is largely compensatable by shaping the electrically conductive cross-section of the conductor units so as to decrease symmetrically from an axial center of the antenna structure moving toward the end faces of the structure. The conductor units thus have a largest cross-section at a center of the antenna structure, and a smallest cross-section at the end faces.
摘要翻译：在核磁共振断层摄影装置中用于激发基本上均匀的磁RF场和/或用于接收RF信号的天线结构包括：中空圆柱形导体护套，其在低频下对于梯度磁场基本上是透射的，所述多个导体单元在导体护套，每个导体单元包括至少一个导体元件，以及设置在天线结构的端面处的RF反射器和外部能量馈送或接收装置。在该天线结构中，朝向天线结构的端面越来越多地发生的电流下降通过对导体单元的导电横截面进行成形以便从天线结构的轴向中心对称地向着结构的端面。因此，导体单元在天线结构的中心处具有最大的横截面，并且在端面处具有最小的横截面。

42. 发明授权

US10439568B2 Transmission amplifier for amplifying a signal in a wire-free transmission system 有权
公开(公告)号：US10439568B2
公开(公告)日：2019-10-08
申请号：US15562982
申请日：2016-03-15
申请人： Franz Eiermann , Ralph Oppelt
发明人： Franz Eiermann , Ralph Oppelt
IPC分类号： H03F3/217 , H02J7/00 , H02J7/02
摘要： A transmission amplifier is provided for amplifying the signal in a wire-free transmission system. The transmission amplifier includes a pre-amplifier stage and an amplifier output stage that is coupled to the pre-amplifier stage. The amplifier output stage is configured with gate components and is configured to provide a signal fed in as an amplified output signal on the output side.

43. 发明授权

US10247792B2 Field-coupled connection technique for linking coils and/or patient tables in magnetic resonance imaging 有权
公开(公告)号：US10247792B2
公开(公告)日：2019-04-02
申请号：US14716552
申请日：2015-05-19
申请人： Stephan Biber , Ralph Oppelt
发明人： Stephan Biber , Ralph Oppelt
IPC分类号： G01R33/36 , G01R33/341
摘要： A magnetic resonance imaging (MRI) system connection for a magnetic resonance imaging system, such as for an MRI local coil and/or patient couch, is provided. The MRI system connection is embodied with devices for a field-coupled transmission of signals.

44. 发明申请

US20180367108A1 TRANSMISSION AMPLIFIER FOR AMPLIFYING A SIGNAL IN A WIRE-FREE TRANSMISSION SYSTEM 审中-公开
公开(公告)号：US20180367108A1
公开(公告)日：2018-12-20
申请号：US15562982
申请日：2016-03-15
申请人： Franz Eiermann , Ralph Oppelt
发明人： Franz Eiermann , Ralph Oppelt
IPC分类号： H03F3/217 , H02J7/02
CPC分类号： H03F3/2171 , H02J7/025 , H03F3/217 , H03F3/2178
摘要： A transmission amplifier is provided for amplifying the signal in a wire-free transmission system. The transmission amplifier includes a pre-amplifier stage and an amplifier output stage that is coupled to the pre-amplifier stage. The amplifier output stage is configured with gate components and is configured to provide a signal fed in as an amplified output signal on the output side.

45. 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.

46. 发明申请

US20160181684A1 STANDING WAVE DAMPING ON A WAVEGUIDE CARRYING A SIGNAL 有权
标题翻译：在波形传输信号上的波形阻尼波形
公开(公告)号：US20160181684A1
公开(公告)日：2016-06-23
申请号：US14972304
申请日：2015-12-17
申请人： Ralph Oppelt
发明人： Ralph Oppelt
IPC分类号： H04B3/28
CPC分类号： H01P1/225
摘要： 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.
摘要翻译：提供了一种用于阻尼载波信号的波导上的驻波的装置。该装置包括至少一对阻抗向上变换和阻抗下变换的Boucherot桥连接到波导中。两个Boucherot桥梁带来了局部增加的阻抗和电感值，结果是获得显着改善的驻波抑制或阻尼。下转换的Boucherot桥直接连接在上变换桥后面，结果可以再次向下变换到波导的原始阻抗，从而可以避免信号反射。

47. 发明申请

US20150207653A1 Transmitting a Frequency-Modulated Signal 有权
标题翻译：发送频率调制信号
公开(公告)号：US20150207653A1
公开(公告)日：2015-07-23
申请号：US14602239
申请日：2015-01-21
申请人： Ralph Oppelt , Michael Wiehl
发明人： Ralph Oppelt , Michael Wiehl
IPC分类号： H04L27/12 , H04W72/04 , H04L5/00
CPC分类号： H04L27/12 , H04L5/0048 , H04L25/0226 , H04W72/0453
摘要： A transmitting apparatus for transmitting a frequency-modulated signal is provided. The transmitting apparatus includes a pilot tone generation device for generating a pilot tone. The transmitting apparatus also includes a modulation device for obtaining the generated pilot tone and a modulating useful signal and for generating a frequency-modulated signal based on a combination of the generated pilot tone and the modulating useful signal. The generated pilot tone has a frequency outside a frequency range of the modulating useful signal in order to vary a frequency range of the frequency-modulated signal.
摘要翻译：提供一种用于发送调频信号的发送装置。发送装置包括用于产生导频音的导频音产生装置。发送装置还包括用于获得生成的导频音调的调制装置和调制有用信号，并且用于基于所生成的导频音和调制有用信号的组合来生成调频信号。所产生的导频音具有在调制有用信号的频率范围之外的频率，以便改变调频信号的频率范围。

48. 发明授权

US08526902B2 Arrangement for processing a non-symmetrical and a symmetrical signal 有权
标题翻译：用于处理非对称和对称信号的布置
公开(公告)号：US08526902B2
公开(公告)日：2013-09-03
申请号：US13416769
申请日：2012-03-09
申请人： Stephan Biber , Ralph Oppelt , Robert Rehner
发明人： Stephan Biber , Ralph Oppelt , Robert Rehner
IPC分类号： H04B7/00
CPC分类号： H04B1/28 , H03H7/0115 , H03H7/03 , H03H7/06 , H03H7/175 , H03H7/1758 , H03H7/1766 , H03H7/1775 , H03H7/42
摘要： An arrangement for processing a non-symmetrical signal includes an apparatus configured to balance and filter an image frequency of a nominal frequency of the non-symmetrical receiving signal. The apparatus includes a modified Boucherot bridge having a series or parallel oscillating circuit that replaces inductive or capacitive components of a conventional Boucherot bridge, such that the modified Boucherot bridge is in the harmonized state with the image frequency to be faded out and has a predetermined impedance with the nominal frequency on its symmetrical output terminals. The nominal frequency has a predetermined impedance on its symmetrical output terminals. The nominal frequency is transmitted as a signal balanced to ground to the symmetrical output terminals of the modified Boucherot bridge.
摘要翻译：用于处理非对称信号的装置包括被配置为平衡和过滤非对称接收信号的标称频率的图像频率的装置。该装置包括具有串联或并联振荡电路的经修改的Boucherot桥，该电路代替常规Boucherot桥的电感或电容分量，使得经修改的Boucherot桥处于协调状态，图像频率将被淡出并具有预定阻抗标称频率在其对称输出端子上。标称频率在其对称输出端子上具有预定的阻抗。标称频率作为平衡到地面的信号传输到改进的Boucherot桥的对称输出端子。

49. 发明申请

US20130063221A1 ARRANGEMENT FOR PROCESSING A NON-SYMMETRICAL AND A SYMMETRICAL SIGNAL 有权
标题翻译：用于处理非对称和对称信号的布置
公开(公告)号：US20130063221A1
公开(公告)日：2013-03-14
申请号：US13416769
申请日：2012-03-09
申请人： Stephan Biber , Ralph Oppelt , Robert Rehner
发明人： Stephan Biber , Ralph Oppelt , Robert Rehner
IPC分类号： H03H7/42
CPC分类号： H04B1/28 , H03H7/0115 , H03H7/03 , H03H7/06 , H03H7/175 , H03H7/1758 , H03H7/1766 , H03H7/1775 , H03H7/42
摘要： An arrangement for processing a non-symmetrical signal includes an apparatus configured to balance and filter an image frequency of a nominal frequency of the non-symmetrical receiving signal. The apparatus includes a modified Boucherot bridge having a series or parallel oscillating circuit that replaces inductive or capacitive components of a conventional Boucherot bridge, such that the modified Boucherot bridge is in the harmonized state with the image frequency to be faded out and has a predetermined impedance with the nominal frequency on its symmetrical output terminals. The nominal frequency has a predetermined impedance on its symmetrical output terminals. The nominal frequency is transmitted as a signal balanced to ground to the symmetrical output terminals of the modified Boucherot bridge.
摘要翻译：用于处理非对称信号的装置包括被配置为平衡和过滤非对称接收信号的标称频率的图像频率的装置。该装置包括具有串联或并联振荡电路的经修改的Boucherot桥，该电路代替常规Boucherot桥的电感或电容分量，使得经修改的Boucherot桥处于协调状态，图像频率将被淡出并具有预定阻抗标称频率在其对称输出端子上。标称频率在其对称输出端子上具有预定的阻抗。标称频率作为平衡到地面的信号传输到改进的Boucherot桥的对称输出端子。

50. 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。

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