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    Optical down-converter using universal frequency translation technology
    9.
    发明授权
    Optical down-converter using universal frequency translation technology 有权
    光学下变频器采用通用频率转换技术

    公开(公告)号：US07321735B1

    公开(公告)日：2008-01-22

    申请号：US09567977

    申请日：2000-05-10

    申请人： Francis J. Smith ,  Michael J. Bultman ,  Robert W. Cook ,  Richard C. Looke ,  Charley D. Moses, Jr. ,  Gregory S. Rawlins ,  Michael W. Rawlins ,  Robert T. Short ,  David F. Sorrells ,  Danny E. Stoneking

    发明人： Francis J. Smith ,  Michael J. Bultman ,  Robert W. Cook ,  Richard C. Looke ,  Charley D. Moses, Jr. ,  Gregory S. Rawlins ,  Michael W. Rawlins ,  Robert T. Short ,  David F. Sorrells ,  Danny E. Stoneking

    IPC分类号： H04B10/06

    CPC分类号： H03D7/00

    摘要： A method and system for converting an optical signal to electrical information signals, including demodulated baseband information signals and modulated baseband signals at multiple harmonics. In an embodiment, the optical information signal is amplitude modulated with information. The method converts an optical signal to electrical charge, accumulates the electrical charge, and periodically transfers the accumulated electrical charge to a storage device, whereby the periodically transferred electrical charge forms the electrical signals. An exemplary system includes an optical transducer and a universal frequency translator coupled to an output of the optical transducer. The optical transducer receives an optical signal and converts the optical signal to electrical charge. The universal frequency translator periodically transfers energy from the electrical charge and forms the electrical signals from the transferred energy. In an embodiment, the present invention converts an I and Q optical signal to electrical signals. In an embodiment, the present invention converts an optical signal to an RF electrical signal using relatively few components, while preserving information content.

    摘要翻译： 一种用于将光信号转换为电信息信号的方法和系统，包括解调的基带信息信号和多个谐波的调制的基带信号。 在一个实施例中，光信息信号用信息进行幅度调制。 该方法将光信号转换为电荷，累积电荷，并将累积的电荷周期性地传送到存储装置，由此周期性转移的电荷形成电信号。 示例性系统包括光学换能器和耦合到光学换能器的输出的通用频率转换器。 光学传感器接收光信号并将光信号转换成电荷。 通用频率转换器周期性地从电荷传输能量，并从传送的能量形成电信号。 在一个实施例中，本发明将I和Q光信号转换成电信号。 在一个实施例中，本发明使用相对较少的组件将光信号转换成RF电信号，同时保留信息内容。

    Phased array antenna applications on universal frequency translation
    10.
    发明授权
    Phased array antenna applications on universal frequency translation 有权
    相控阵天线应用于通用频率转换

    公开(公告)号：US07554508B2

    公开(公告)日：2009-06-30

    申请号：US12014461

    申请日：2008-01-15

    申请人： Martin R Johnson ,  Jonathan S Jensen ,  Robert T. Short ,  Jamison L. Young ,  David F Sorrells ,  Michael J. Bultman ,  Robert W Cook ,  Richard C. Looke ,  Charley D. Moses, Jr.

    发明人： Martin R Johnson ,  Jonathan S Jensen ,  Robert T. Short ,  Jamison L. Young ,  David F Sorrells ,  Michael J. Bultman ,  Robert W Cook ,  Richard C. Looke ,  Charley D. Moses, Jr.

    IPC分类号： H01Q21/00

    CPC分类号： H03D7/00

    摘要： A universal frequency translation module (UFT) frequency translates an electromagnetic (EM) input signal by sampling the EM input signal according to a periodic control signal (also called an aliasing signal). By controlling the relative sampling time, the UFT module implements a relative phase shift during frequency translation. In other words, a relative phase shift can be introduced in the output signal by sampling the input signal at one point in time relative to another point in time. As such, the UFT module can be configured as an integrated frequency translator and phase-shifter. This includes the UFT module as an integrated down-converter and phase shifter, and the UFT module as an integrated up-converter and phase shifter. Applications of universal frequency translation and phase shifting include phased array antennas that utilize integrated frequency translation and phase shifting technology to steer the one or more main beams of the phased array antenna.

    摘要翻译： 通用频率转换模块（UFT）频率通过根据周期性控制信号（也称为混叠信号）对EM输入信号进行采样来转换电磁（EM）输入信号。 通过控制相对采样时间，UFT模块在频率转换期间实现相对相移。 换句话说，通过在一个时间点相对于另一个时间点对输入信号进行采样，可以在输出信号中引入相对相移。 因此，UFT模块可以被配置为集成频率转换器和移相器。 这包括作为集成的下变频器和移相器的UFT模块，以及作为集成上变频器和移相器的UFT模块。 通用频率转换和相移的应用包括利用集成频率转换和相移技术来引导相控阵天线的一个或多个主波束的相控阵天线。