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1. 发明授权

US07606551B2 Mixer circuit with balanced frequency mixer with varactor diodes 有权
标题翻译：具有变容二极管的平衡混频器的混频器电路
公开(公告)号：US07606551B2
公开(公告)日：2009-10-20
申请号：US11680720
申请日：2007-03-01
申请人： Jan Bollenbeck , Martin Hergt , Markus Vester
发明人： Jan Bollenbeck , Martin Hergt , Markus Vester
IPC分类号： H04B1/26 , H04B15/00
CPC分类号： H03D7/1408
摘要： 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.
摘要翻译：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。

2. 发明申请

US20070207763A1 MIXER CIRCUIT WITH BALANCED FREQUENCY MIXER WITH VARACTOR DIODES 有权
标题翻译：具有变压器二极管的平衡混频器的混频器电路
公开(公告)号：US20070207763A1
公开(公告)日：2007-09-06
申请号：US11680720
申请日：2007-03-01
申请人： Jan Bollenbeck , Martin Hergt , Markus Vester
发明人： Jan Bollenbeck , Martin Hergt , Markus Vester
IPC分类号： H04B1/26
CPC分类号： H03D7/1408
摘要： 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.
摘要翻译：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。

3. 发明申请

US20180299522A1 DEVICE AND METHOD FOR RECOVERING A TEMPORAL REFERENCE IN FREE-RUNNING MR RECEIVE CHAINS 审中-公开
公开(公告)号：US20180299522A1
公开(公告)日：2018-10-18
申请号：US15951156
申请日：2018-04-11
申请人： Stephan Biber , Jan Bollenbeck , Sven Heggen , Martin Nisznansky , Markus Vester
发明人： Stephan Biber , Jan Bollenbeck , Sven Heggen , Martin Nisznansky , Markus Vester
IPC分类号： G01R33/36 , G01R33/3415
CPC分类号： G01R33/3692 , G01R33/3415 , G01R33/3621
摘要： A device for recovering a temporal reference in a free-running magnetic resonance tomography (MRT) receive chain includes a time reference encoder and a time reference decoder. The time reference encoder is configured to generate a modulation signal as a function of a reference clock, where the modulation signal is configured for a correlation with a temporal resolution less than a maximum predetermined phase deviation and a maximum that may clearly be identified. The time reference decoder is configured to receive, via the first signal input, a receive signal as a function of the modulation signal, perform a correlation with a reference signal, and generate a signal as a function of a temporal reference of the modulation signal in the receive signal in relation to the reference signal.

4. 发明授权

US08994375B2 Local coil system 有权
标题翻译：局部线圈系统
公开(公告)号：US08994375B2
公开(公告)日：2015-03-31
申请号：US13436588
申请日：2012-03-30
申请人： Andre Albsmeier , Jan Bollenbeck , Florian Poprawa , Stefan Schwarzer , Markus Vester
发明人： Andre Albsmeier , Jan Bollenbeck , Florian Poprawa , Stefan Schwarzer , Markus Vester
IPC分类号： G01V3/00 , G01R33/36 , G01R33/3415
CPC分类号： G01R33/3692 , G01R33/3415 , G01R33/3621
摘要： The present embodiments relate to a local coil system for a magnetic resonance system. The local coil system includes at least one local coil for detecting MR response signals and at least one transmitting device for the wireless transmission of signals to a receiver of the magnetic resonance system. The local coil system is embodied with a transmitter-side diversity. A receiver-side diversity may exist in the magnetic resonance system.
摘要翻译：本实施例涉及一种用于磁共振系统的局部线圈系统。本地线圈系统包括用于检测MR响应信号的至少一个本地线圈和用于将信号无线传输到磁共振系统的接收器的至少一个发送装置。本地线圈系统具有发射机侧分集。在磁共振系统中可能存在接收机侧分集。

5. 发明申请

US20150070014A1 Compatible Magnetic Resonance Receiver 有权
标题翻译：兼容磁共振接收机
公开(公告)号：US20150070014A1
公开(公告)日：2015-03-12
申请号：US14483795
申请日：2014-09-11
申请人： Stephan Biber , Jan Bollenbeck , Markus Vester , JianMin Wang
发明人： Stephan Biber , Jan Bollenbeck , Markus Vester , JianMin Wang
IPC分类号： G01R33/341 , G01R33/54 , G01R33/36 , G01R33/385
CPC分类号： G01R33/341 , G01R33/3415 , G01R33/3621 , G01R33/3664 , G01R33/3852 , G01R33/54
摘要： A method and an apparatus for a magnetic resonance imaging system are provided. A type of further processing of signals transmitted by a local coil to a magnetic resonance imaging (MRI) system is determined in dependence on information received in or from the local coil about a local-coil type of the local coil.
摘要翻译：提供了一种用于磁共振成像系统的方法和装置。根据本地线圈关于局部线圈类型的本地线圈接收的信息来确定由局部线圈传输到磁共振成像（MRI）系统的信号的进一步处理的类型。

6. 发明授权

US08698665B2 Converting and transmitting a magnetic resonance detection signal 有权
标题翻译：转换和发送磁共振检测信号
公开(公告)号：US08698665B2
公开(公告)日：2014-04-15
申请号：US13525186
申请日：2012-06-15
申请人： Jan Bollenbeck , Stefan Schwarzer , Markus Vester
发明人： Jan Bollenbeck , Stefan Schwarzer , Markus Vester
IPC分类号： H03M1/12
CPC分类号： G01R33/3621 , G01R33/3692
摘要： A system and method for converting an analog detection signal of a magnetic resonance detection coil into a digital detection signal and for transmitting the detection signal to an evaluating device. In an embodiment, the detection signal is digitized by an analog-to-digital converter, decimated by a decimation filter, transmitted through a transmission route, then equalized by an equalizing filter.
摘要翻译：一种用于将磁共振检测线圈的模拟检测信号转换为数字检测信号并将检测信号发送到评估装置的系统和方法。在一个实施例中，检测信号由模数转换器数字化，由抽取滤波器抽取，通过传输路由传输，然后由均衡滤波器均衡。

7. 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。

8. 发明申请

US20070035350A1 Circuit arrangement for generating a reference signal 有权
标题翻译：用于产生参考信号的电路装置
公开(公告)号：US20070035350A1
公开(公告)日：2007-02-15
申请号：US11443558
申请日：2006-05-30
申请人： Jan Bollenbeck , Markus Vester
发明人： Jan Bollenbeck , Markus Vester
IPC分类号： H03B5/34
CPC分类号： H03J7/08 , H03H7/0161 , H03H7/20 , H03H2009/02204 , H03J7/065 , H03L7/0805 , H03L7/0812
摘要： 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.
摘要翻译：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。

9. 发明申请

US20140266190A1 System and Methods for Providing Magnetic Resonance Imaging Data for an Image Reconstruction 有权
标题翻译：提供图像重构的磁共振成像数据的系统和方法
公开(公告)号：US20140266190A1
公开(公告)日：2014-09-18
申请号：US14204007
申请日：2014-03-11
申请人： Jan Bollenbeck , Jörg Hüttner , Klaus Pistor , Stefan Schwarzer , Markus Vester
发明人： Jan Bollenbeck , Jörg Hüttner , Klaus Pistor , Stefan Schwarzer , Markus Vester
IPC分类号： G01R33/56
CPC分类号： G01R33/56 , G01R33/3692
摘要： 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.
摘要翻译：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。

10. 发明申请

US20130342199A1 Determination of Communication Latency in Magnetic Resonance Tomography Systems 有权
标题翻译：磁共振成像系统中通信延迟的确定
公开(公告)号：US20130342199A1
公开(公告)日：2013-12-26
申请号：US13924861
申请日：2013-06-24
申请人： Jan Bollenbeck , Stefan Schwarzer , Markus Vester
发明人： Jan Bollenbeck , Stefan Schwarzer , Markus Vester
IPC分类号： G01R33/36
CPC分类号： G01R33/3692
摘要： A method for determining communication latency in a magnetic resonance tomography system includes emitting a high-frequency pulse at a first timepoint, receiving the high-frequency pulse by a local coil arrangement of the magnetic resonance tomography system, and transmitting a return signal from the local coil arrangement to a receiving unit. The method also includes receiving the return signal by the receiving unit at a second timepoint, and evaluating a time difference between the first timepoint and the second timepoint in order to determine the communication latency.
摘要翻译：用于确定磁共振断层摄影系统中的通信等待时间的方法包括在第一时间点发射高频脉冲，通过磁共振断层摄影系统的局部线圈布置接收高频脉冲，以及从本地发送返回信号线圈布置到接收单元。该方法还包括在第二时刻由接收单元接收返回信号，以及评估第一时间点和第二时间点之间的时间差，以便确定通信等待时间。

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