公开(公告)号：US5144239A

公开(公告)日：1992-09-01

申请号：US565137

申请日：1990-08-10

Applicant: Ralph Oppelt ,  Horst Siebold

Inventor： Ralph Oppelt ,  Horst Siebold

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

CPC classification number: G01R33/3678 ,  G01R33/34076 ,  G01R33/34007

Abstract: 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.

Abstract translation: 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

Applicant: Franz Altmann ,  Bernd Granz ,  Dieter Grenda ,  Ralph Oppelt

Inventor： Franz Altmann ,  Bernd Granz ,  Dieter Grenda ,  Ralph Oppelt

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

CPC classification number: B06B1/0629 ,  H01L25/112 ,  H01L2924/0002 ,  H01L2924/3011

Abstract: 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.

Abstract translation: 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：US09780727B2

公开(公告)日：2017-10-03

申请号：US13934183

申请日：2013-07-02

Applicant: Ralph Oppelt

Inventor： Ralph Oppelt

IPC: H03B5/12 ,  H03C3/09 ,  H03C3/00 ,  H03C3/22 ,  H03L7/099 ,  G01R33/36

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

Abstract: 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.

公开(公告)号：US09778330B2

公开(公告)日：2017-10-03

申请号：US13931611

申请日：2013-06-28

Applicant: Ralph Oppelt ,  Jian Min Wang

Inventor： Ralph Oppelt ,  Jian Min Wang

IPC: G01R33/28 ,  H04B3/02 ,  G01R33/36 ,  H04B3/50 ,  G01R33/3415

CPC classification number: G01R33/28 ,  G01R33/3415 ,  G01R33/3621 ,  H04B3/02 ,  H04B3/50

Abstract: A method for simultaneous transmission of at least two high-frequency transmission signals via a common high-frequency line includes providing at least two input signals at respective inlet ports. The input signals are signals of a same carrier frequency. From the input signals, respective transmission signals are provided with different transmission frequencies from each other and from the carrier frequency by mixing the input signals using one frequency mixer each. The frequency mixers are supplied with respective mixer oscillator signals. The transmission signals are transmitted via the common high-frequency line. The mixer oscillator signals are provided from a same oscillator signal.

公开(公告)号：US20140347143A1

公开(公告)日：2014-11-27

申请号：US14284114

申请日：2014-05-21

Applicant: Ralph Oppelt

Inventor： Ralph Oppelt

IPC: H03H7/42

CPC classification number: H01P1/18 ,  H01P5/16 ,  H03H7/42

Abstract: A balancing circuit comprises a first conductor path and a second conductor path. The first and second conductor paths are arranged in parallel with one another with respect to a signal flow. The first conductor path and the second conductor path are formed by a first stage and a second stage. The first conductor path has a high-pass member that is assigned to the first stage and a high-pass member that is assigned to the second stage. The second conductor path has a low-pass member that is assigned to the first stage and a low-pass member that is assigned to the second stage. Each high-pass member is designed to shift a signal forward in terms of phase by a predetermined amount, and each low-pass member is designed to shift a signal backward in terms of phase by a predetermined amount, in order to generate a balanced or unbalanced signal.

Abstract translation: 平衡电路包括第一导体路径和第二导体路径。 第一和第二导体路径相对于信号流量彼此平行地布置。 第一导体路径和第二导体路径由第一阶段和第二阶段形成。 第一导体路径具有分配给第一级的高通部件和分配给第二级的高通部件。 第二导体路径具有分配给第一级的低通构件和分配给第二级的低通构件。 每个高通部件被设计成将信号在相位上向前移动预定量，并且每个低通部件被设计成将信号在相位上向后移位预定量，以便产生平衡或 不平衡信号。

公开(公告)号：US20140002087A1

公开(公告)日：2014-01-02

申请号：US13931611

申请日：2013-06-28

Applicant: Ralph Oppelt ,  Jian Min Wang

Inventor： Ralph Oppelt ,  Jian Min Wang

IPC: G01R33/28 ,  H04B3/02

CPC classification number: G01R33/28 ,  G01R33/3415 ,  G01R33/3621 ,  H04B3/02 ,  H04B3/50

Abstract: A method for simultaneous transmission of at least two high-frequency transmission signals via a common high-frequency line includes providing at least two input signals at respective inlet ports. The input signals are signals of a same carrier frequency. From the input signals, respective transmission signals are provided with different transmission frequencies from each other and from the carrier frequency by mixing the input signals using one frequency mixer each. The frequency mixers are supplied with respective mixer oscillator signals. The transmission signals are transmitted via the common high-frequency line. The mixer oscillator signals are provided from a same oscillator signal.

Abstract translation: 用于经由公共高频线同时传输至少两个高频传输信号的方法包括在各个入口端口提供至少两个输入信号。 输入信号是相同载波频率的信号。 根据输入信号，通过使用一个混频器混合输入信号，各个传输信号彼此之间和从载波频率提供不同的传输频率。 混频器提供相应的混频器振荡器信号。 发送信号通过公共高频线路发送。 混频器振荡器信号由相同的振荡器信号提供。

公开(公告)号：US07737787B2

公开(公告)日：2010-06-15

申请号：US12331512

申请日：2008-12-10

Applicant: Ralph Oppelt ,  Markus Vester

Inventor： Ralph Oppelt ,  Markus Vester

IPC: H03F3/04

CPC classification number: H03F1/34 ,  H03F1/26 ,  H03F1/42 ,  H03F1/56 ,  H03F3/195 ,  H03F2200/147 ,  H03F2200/36 ,  H03F2200/372

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07683330B2

公开(公告)日：2010-03-23

申请号：US11438209

申请日：2006-05-23

Applicant: Robert Krieg ,  Rainer Kuth ,  Ralf Ladebeck ,  Ralph Oppelt ,  Sebastian Schmidt ,  Markus Vester

Inventor： Robert Krieg ,  Rainer Kuth ,  Ralf Ladebeck ,  Ralph Oppelt ,  Sebastian Schmidt ,  Markus Vester

IPC: G01T1/166

CPC classification number: G01T1/2985 ,  A61B6/037 ,  G01R33/481

Abstract: A method is disclosed for determining positron emission measurement information in the context of positron emission tomography. The method includes carrying out a positron emission measurement, in a body area of a subject to be examined, to record positron emission measurement information with point resolution and determining a time frame of the measurement by, at the same time, generating images of the body area to be examined with a relatively higher time resolution and with point-resolved image data, using a second imaging method. Further, a local shift of points of individual images of the second imaging method is determined, caused by movement processes of the subject to be examined, and as a function thereof, of the positron emission measurement information for at least a part of the measurement period and of the body area to be examined. Finally, the positron emission measurement information is adjusted as a function of the determined shift.

Abstract translation: 公开了一种用于在正电子发射断层摄影的背景下确定正电子发射测量信息的方法。 该方法包括在待检查对象的身体区域中进行正电子发射测量，以记录具有点分辨率的正电子发射测量信息，并且通过同时生成身体的图像来确定测量的时间范围 使用第二成像方法以相对较高的时间分辨率和点分辨图像数据进行检查的区域。 此外，由第二成像方法的各个图像的点的局部偏移由待检查对象的移动处理确定，并且作为其功能，确定至少部分测量周期的正电子发射测量信息 以及要检查的身体区域。 最后，调整正电子发射测量信息作为确定的位移的函数。

公开(公告)号：US20090286478A1

公开(公告)日：2009-11-19

申请号：US12465147

申请日：2009-05-13

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

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

IPC: H04B7/00

CPC classification number: G01R33/3664 ,  G01R33/3415 ,  G01R33/3607 ,  G01R33/3621 ,  G01R33/3635

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07432764B2

公开(公告)日：2008-10-07

申请号：US11502846

申请日：2006-08-11

Applicant: Ralph Oppelt

Inventor： Ralph Oppelt

IPC: H03F3/26

CPC classification number: H03F1/34 ,  H03F3/3066 ,  H03F2200/534 ,  H03F2200/541 ,  H03F2203/30036 ,  H03F2203/30144

Abstract: The push-pull amplifier with transformational negative feedback is provided for amplification of variable electrical signals. It includes a signal input and a signal output, a transformational negative feedback connected with the signal input and the signal output and an amplifier circuit. The amplifier circuit includes an input and an output as well as a first transistor and a second transistor. The input of the amplifier circuit is thereby connected with the signal input and the output of the amplifier circuit is thereby connected with the signal output via the transformational negative feedback.

Abstract translation: 具有变换负反馈的推挽放大器用于放大可变电信号。 它包括信号输入和信号输出，与信号输入和信号输出连接的变换负反馈和放大器电路。 放大器电路包括输入和输出以及第一晶体管和第二晶体管。 因此，放大器电路的输入端与信号输入端连接，放大电路的输出由此通过变换负反馈与信号输出端连接。