公开(公告)号：US20110109315A1

公开(公告)日：2011-05-12

申请号：US12893286

申请日：2010-09-29

Applicant: Stephan Biber ,  Jan Bollenbeck ,  Markus Vester

Inventor： Stephan Biber ,  Jan Bollenbeck ,  Markus Vester

IPC: G01R33/44

CPC classification number: G01R33/3692 ,  G01R33/341 ,  G01R33/3415 ,  G01R33/3621 ,  G01R33/422

Abstract: In a magnetic resonance tomography local coil arrangement and a method for processing signals received thereby at least one local coil is fashioned to receive at least one reception signal and at least one amplifier is provided that amplifies the at least one reception signal. A frequency converter generates at least one intermediate frequency signal from the at least one reception signal the intermediate frequency of the intermediate frequency signal differing from the reception signal frequency of each reception signal. An analog-digital converter converts the analog intermediate frequency signal into a digitized signal. A shielding device shields against at least radio-frequency signals, the shielding device surrounding at least the analog-digital converter. At least one frequency filter is arranged between the at least one local coil and the analog-digital converter, the frequency filter exhibiting a transmission range for signals with the intermediate frequency of an intermediate frequency signal. The digitized signal is transmitted from the local coil arrangement.

Abstract translation: 在磁共振断层摄影局部线圈装置和用于处理由此接收的信号的方法中，至少一个局部线圈被形成为接收至少一个接收信号，并且提供放大至少一个接收信号的至少一个放大器。 变频器从至少一个接收信号产生至少一个中频信号，该中频信号与每个接收信号的接收信号频率不同。 模拟数字转换器将模拟中频信号转换为数字化信号。 屏蔽装置至少屏蔽射频信号，屏蔽装置至少围绕模拟数字转换器。 在至少一个本地线圈和模数转换器之间布置至少一个频率滤波器，该频率滤波器对于具有中频信号的中频的信号呈现传输范围。 数字化信号从本地线圈装置发送。

公开(公告)号：US07606551B2

公开(公告)日：2009-10-20

申请号：US11680720

申请日：2007-03-01

Applicant: Jan Bollenbeck ,  Martin Hergt ,  Markus Vester

Inventor： Jan Bollenbeck ,  Martin Hergt ,  Markus Vester

IPC: H04B1/26 ,  H04B15/00

CPC classification number: H03D7/1408

Abstract: In a mixer circuit with a balanced frequency mixer with varactor diodes, a first input signal that exhibits a first input frequency can be fed to the frequency mixer via a first input. Furthermore, a second input signal that exhibits a second input frequency can be fed to the frequency mixer via a second input. The frequency mixer has at least two amplifier elements fashioned as varactor diodes. These amplifier elements mix the input signals with one another into a mix signal with a first signal component and a second signal component. The first signal component exhibits a first component frequency, the second signal component a second component frequency. The first component frequency is equal to the sum of the first and second input frequencies, the second component frequency is equal to the difference of the first and second input frequencies. An output signal that contains at least one of the signal components can be tapped via the output. The frequency mixer is fashioned as a balanced frequency mixer in which at least the second input and the output are decoupled from one another. The second input frequency is a multiple of the first input frequency. An adjustment circuit for adjustment of an operating point of the varactor diodes is connected in parallel with each varactor diode.

Abstract translation: 在具有具有变容二极管的平衡混频器的混频器电路中，具有第一输入频率的第一输入信号可以经由第一输入馈送到混频器。 此外，具有第二输入频率的第二输入信号可以经由第二输入馈送到混频器。 混频器具有至少两个放大器元件，其形式为变容二极管。 这些放大器元件将输入信号彼此混合成具有第一信号分量和第二信号分量的混合信号。 第一信号分量呈现第一分量频率，第二信号分量呈现第二分量频率。 第一分量频率等于第一和第二输入频率的和，第二分量频率等于第一和第二输入频率的差。 包含至少一个信号分量的输出信号可以通过输出进行抽头。 混频器被形成为平衡混频器，其中至少第二输入和输出彼此解耦。 第二输入频率是第一输入频率的倍数。 用于调整变容二极管的工作点的调整电路与每个变容二极管并联连接。

公开(公告)号：US07459946B2

公开(公告)日：2008-12-02

申请号：US11443558

申请日：2006-05-30

Applicant: Jan Bollenbeck ,  Markus Vester

Inventor： Jan Bollenbeck ,  Markus Vester

IPC: H03B19/00

CPC classification number: H03J7/08 ,  H03H7/0161 ,  H03H7/20 ,  H03H2009/02204 ,  H03J7/065 ,  H03L7/0805 ,  H03L7/0812

Abstract: In a circuit arrangement for generation of a reference signal with an oscillation generator, a phase-controlled filter and a frequency multiplier are arranged downstream from the oscillation generator. The frequency multiplier is connected with an output for emission of the reference signal.

Abstract translation: 在用振荡发生器产生参考信号的电路装置中，相位控制滤波器和倍频器布置在振荡发生器的下游。 倍频器与用于发射参考信号的输出端相连。

公开(公告)号：US10670673B2

公开(公告)日：2020-06-02

申请号：US15613196

申请日：2017-06-03

Applicant: Jan Bollenbeck

Inventor： Jan Bollenbeck

IPC: G01R33/36 ,  G01R33/341 ,  H01P3/06 ,  H01P3/08

Abstract: A transmitting device and a method for transmitting two high frequency signals for a magnetic resonance tomograph are provided. The transmitting device includes a shielded balanced transmission line, a first signal driver, and a second signal driver. The first signal driver and the second signal driver feed the first high frequency signal to a first conductor and the second high frequency signal to a second conductor of the balanced transmission line. A shielding of the balanced transmission line has an electrical connection to a common ground potential for the first signal driver and the second signal driver.

公开(公告)号：US10481227B2

公开(公告)日：2019-11-19

申请号：US15585769

申请日：2017-05-03

Applicant: Stephan Biber ,  Jan Bollenbeck ,  Martin Hemmerlein

Inventor： Stephan Biber ,  Jan Bollenbeck ,  Martin Hemmerlein

IPC: G01R33/36 ,  G01R33/385 ,  G01R33/3815 ,  H03H7/42

Abstract: A transmission apparatus for transmitting an intermediate frequency signal and an oscillator signal for mixing down the intermediate frequency signal, a magnetic resonance tomograph with a local coil, a receive unit, and a transmission apparatus are provided. The transmission apparatus has a symmetrical transmission line for transmission of the oscillator signal and the intermediate frequency signal and a symmetrizing element for adaptation of an unsymmetrical signal source and/or signal sink to the symmetrical transmission line. The symmetrizing element has only ferrite-free inductances. The local coil and the receive unit are connected for signaling purposes via the transmission apparatus.

公开(公告)号：US10101418B2

公开(公告)日：2018-10-16

申请号：US14842033

申请日：2015-09-01

Applicant: Stephan Biber ,  Jan Bollenbeck

Inventor： Stephan Biber ,  Jan Bollenbeck

IPC: G01R33/36

Abstract: The embodiments relate to a method and a receiving system for an imaging magnetic resonance tomography system. The receiving system includes at least one multiplexer entity for a plurality of receive signals, which respectively come from an antenna of a local coil and may be switched to an analog-digital converter, wherein sampling rates (e.g., 20 MS/s per Ch, 40 MS/s per Ch, 80 MS/s per Ch) of an analog-digital converter for the sampling of a receive signal may be changed.

公开(公告)号：US10048342B2

公开(公告)日：2018-08-14

申请号：US14670817

申请日：2015-03-27

Applicant: Jan Bollenbeck

Inventor： Jan Bollenbeck

IPC: G01R33/56 ,  G01R33/385 ,  G01R33/36

Abstract: An apparatus, a magnetic resonance imaging system, and a method of use are provided for a reception system for transmitting magnetic resonance signals from local coils to an image processing unit of a magnetic resonance imaging system. The apparatus includes an analog receiver for receiving and processing analog signals from the local coils that is configured to directly sample analog signals having different individual frequency bands and/or frequency band pairs, to distinguish the analog signals and to process them differently. The apparatus also includes an A/D converter for converting the processed analog signals from the local coils into digital signals. The apparatus further includes a digital signal processor for processing the digital signals, wherein the digital signal processor includes a Weaver unit and a downstream decimation filter unit.

公开(公告)号：US09985776B2

公开(公告)日：2018-05-29

申请号：US14631480

申请日：2015-02-25

Applicant: Jan Bollenbeck

Inventor： Jan Bollenbeck

IPC: H04L27/14 ,  H04L7/033 ,  G01R33/28 ,  G01R33/54 ,  H02J7/00 ,  H04L27/12 ,  H04L27/20 ,  H04L27/22 ,  A61B5/055

CPC classification number: H04L7/0331 ,  A61B5/055 ,  G01R33/283 ,  G01R33/543 ,  H02J7/0044 ,  H04L27/12 ,  H04L27/14 ,  H04L27/20 ,  H04L27/22

Abstract: A communication method for communication between a first and a second communication apparatus, where at least one wanted signal is transmitted from the second communication apparatus to the first communication apparatus is provided. The method includes sending a first carrier signal at a first frequency using the first communication apparatus. The method also includes receiving the first carrier signal using the second communication apparatus and generating a second carrier signal at a second frequency. The method includes changing the second frequency and/or a specified phase angle, and/or modulating the second carrier signal in each case as a function of the wanted signal in order to generate a transmit signal. The transmit signal is sent by the second communication apparatus, and the transmit signal is received and demodulated in order to recover the wanted signal using the first communication apparatus.

公开(公告)号：US20170322267A1

公开(公告)日：2017-11-09

申请号：US15585769

申请日：2017-05-03

Applicant: Stephan Biber ,  Jan Bollenbeck ,  Martin Hemmerlein

Inventor： Stephan Biber ,  Jan Bollenbeck ,  Martin Hemmerlein

IPC: G01R33/36 ,  G01R33/385 ,  G01R33/3815

CPC classification number: G01R33/3621 ,  G01R33/3815 ,  G01R33/385 ,  H03H7/42

Abstract: A transmission apparatus for transmitting an intermediate frequency signal and an oscillator signal for mixing down the intermediate frequency signal, a magnetic resonance tomograph with a local coil, a receive unit, and a transmission apparatus are provided. The transmission apparatus has a symmetrical transmission line for transmission of the oscillator signal and the intermediate frequency signal and a symmetrizing element for adaptation of an unsymmetrical signal source and/or signal sink to the symmetrical transmission line. The symmetrizing element has only ferrite-free inductances. The local coil and the receive unit are connected for signaling purposes via the transmission apparatus.

公开(公告)号：US20140266190A1

公开(公告)日：2014-09-18

申请号：US14204007

申请日：2014-03-11

Applicant: Jan Bollenbeck ,  Jörg Hüttner ,  Klaus Pistor ,  Stefan Schwarzer ,  Markus Vester

Inventor： Jan Bollenbeck ,  Jörg Hüttner ,  Klaus Pistor ,  Stefan Schwarzer ,  Markus Vester

IPC: G01R33/56

CPC classification number: G01R33/56 ,  G01R33/3692

Abstract: The embodiments relate to an image reconstruction to be carried out on a base unit of a MRI system, where data is formed by reception signals obtained by a local coil unit. Provisions are made for an alternating magnetic field, modulated in accordance with a reference clock, the alternating magnetic field to be used by the local coil unit for obtaining electric energy for supplying local electronics of the local coil unit and the reference clock to be retrieved from the received alternating magnetic field by the local electronics, a radio signal containing MRI information representing the reception signals and clock information representing the retrieved reference clock to be produced by the local electronics and transmitted to the base unit, and the received radio signal to be processed by the base unit such that the data and the clock information are retrieved therefrom and provided for the image reconstruction.

Abstract translation: 实施例涉及要在MRI系统的基本单元上执行的图像重建，其中数据由通过局部线圈单元获得的接收信号形成。 对于根据参考时钟调制的交变磁场的规定，由局部线圈单元使用的用于获得用于提供局部线圈单元的本地电子器件的电能的交变磁场和将从 由本地电子设备接收的交变磁场，包含表示接收信号的MRI信息的无线电信号和表示由本地电子设备发送并发送到基本单元的检索到的参考时钟的时钟信息，以及所接收的待处理的无线电信号 通过基本单元使得数据和时钟信息从其中检索并提供给图像重建。