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    MIXER CIRCUIT WITH BALANCED FREQUENCY MIXER WITH VARACTOR DIODES
    1.
    发明申请
    MIXER CIRCUIT WITH BALANCED FREQUENCY MIXER WITH VARACTOR DIODES 有权
    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。

    Mixer circuit with balanced frequency mixer with varactor diodes
    2.
    发明授权
    Mixer circuit with balanced frequency mixer with varactor diodes 有权
    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。

    LOCAL COIL SYSTEM
    6.
    发明申请
    LOCAL COIL SYSTEM 有权
    本地线圈系统

    公开(公告)号：US20120249135A1

    公开(公告)日：2012-10-04

    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： G01R33/44

    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。

    ARRANGEMENT TO TRANSMIT MAGNETIC RESONANCE SIGNALS
    7.
    发明申请
    ARRANGEMENT TO TRANSMIT MAGNETIC RESONANCE SIGNALS 有权
    发射磁共振信号的安排

    公开(公告)号：US20090286478A1

    公开(公告)日：2009-11-19

    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。

    Local coil system
    9.
    发明授权
    Local coil system 有权
    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。