Optical to radio frequency detector
    1.
    发明公开
    Optical to radio frequency detector 审中-公开
    Radiofrequenzdetektor aus einer optischen Frequenz

    公开(公告)号:EP1361683A1

    公开(公告)日:2003-11-12

    申请号:EP02290318.1

    申请日:2002-02-08

    Applicant: MOTOROLA, INC.

    Abstract: An optical to radio frequency detector comprising an optical guide (11 to 14) for receiving two optical signal components having frequencies that differ by an amount corresponding to a radio frequency, and a radio signal guide (15, 16) coupled with an interaction zone (14) of the optical guide for propagating a radio signal from the interaction zone at the radio frequency. The interaction zone (14) of the optical guide comprises an interaction material presenting a second-order non-linear optical polarisation characteristic to the propagation of the optical signal components, and the radio signal guide (15, 16) is in travelling-wave coupling with the interaction zone. The interaction material includes electrically orientated diazobenzene.
    The radio signal guide (15, 16) comprises an electrically conductive strip (15) juxtaposed with and extending along the interaction zone (14) on one side thereof and an electrically conductive ground plane (16) juxtaposed with and extending along the interaction zone (14) on an opposite side thereof.

    Abstract translation: 一种光到射频检测器,包括用于接收具有与射频相对应的频率不同的频率的两个光信号分量的光导(11至14)以及与交互区耦合的无线信号引导(15,16) 14),用于在射频上传播来自交互区的无线电信号。 光导体的相互作用区域(14)包括对光信号分量的传播呈现二阶非线性光学偏振特性的相互作用材料,无线电信号引导件(15,16)处于行波耦合中 与交互区。 相互作用材料包括电取向的重氮苯。 无线电信号引导器(15,16)包括一个导电条(15),该导电条(15)在其一侧上与相互作用区(14)并置并延伸,并且导电接地平面(16)并置并沿着其延伸 相互作用区域(14)。

    Method and apparatus for space time coding using training symbols to provide transmission range extension
    2.
    发明公开
    Method and apparatus for space time coding using training symbols to provide transmission range extension 有权
    装置,用于空时编码的训练符号的装置,以提供传输范围扩展

    公开(公告)号:EP2003808A1

    公开(公告)日:2008-12-17

    申请号:EP07290745.4

    申请日:2007-06-15

    Applicant: Motorola, Inc.

    CPC classification number: H04L1/0625

    Abstract: A wireless transmitter includes a stream parser for generating a plurality of spatial streams from a digital signal and a space time block coder (STBC) for mapping each of the spatial streams to a plurality of space-time streams that each include data and a preamble for estimating a channel transfer function. The transmitter also includes a spatial mapper for spatially expanding each of the space-time streams by applying a spatial expansion matrix to data and to first training symbols used in the preamble to probe a channel experienced by the data and by applying an extension matrix to second training symbols used in the preamble to probe at least one additional dimension of the channel to enable use of beamforming to achieve range extension The spatial expansion matrix and the extension matrix form an overall matrix that has at least two orthogonal columns with different norms. The wireless transmitter also includes an analog front end for modulating the spatially expanded space-time streams onto a wireless carrier.

    Abstract translation: 的无线发射机包括:用于从数字信号和用于每个空间流映射到时空流并各自包括数据的多元化和用于前同步码的时空块编码器(STBC)产生空间流的多个A流解析器 估计信道传递函数。 因此,该发送器包括空间映射器,用于使用空间通过将空间扩展矩阵数据,并在前导码中用于探测由所述数据经历的信道的第一锻炼符号和通过向扩展矩阵到第二扩大每个空间时间流的 在前导码中使用探测信道的至少一个额外的维度以能够使用波束形成的训练符号以实现范围扩展的空间扩展矩阵和整体矩阵的扩展矩阵形式那样具有不同规范的至少两个正交列。 因此,该无线发射器包括用于调制扩展空间空间时间流到无线载波上的模拟前端。

    Ultra wide band antenna
    3.
    发明公开
    Ultra wide band antenna 审中-公开
    Ultrabreitbandige天线

    公开(公告)号:EP1615294A1

    公开(公告)日:2006-01-11

    申请号:EP04291700.5

    申请日:2004-07-02

    Applicant: MOTOROLA, INC.

    CPC classification number: H01Q9/28 H01Q9/40

    Abstract: An ultra wide band (UWB) antenna is provided, characterised by a teardrop shaped main conductor 400, wherein beyond a region of attachment, a first derivative of the profile of the main conductor 501 is continuous.

    Abstract translation: 提供了一种超宽带(UWB)天线,其特征在于泪滴形主导体400,其中超过附着区域,主导体501的轮廓的一阶导数是连续的。

    Conversion between optical and radio frequency signals
    4.
    发明公开
    Conversion between optical and radio frequency signals 有权
    Konvertierung zwischen optischen und Hochfrequenzsignalen

    公开(公告)号:EP1335239A1

    公开(公告)日:2003-08-13

    申请号:EP02290319.9

    申请日:2002-02-08

    Applicant: MOTOROLA, INC.

    CPC classification number: G02F1/065 G02F1/0356 H04B10/25752

    Abstract: A detector or a modulator for converting between optical and radio frequency signals comprising an optical guide (11 to 14) for propagating two optical signal components having frequencies that differ by an amount corresponding to a radio frequency and a microstrip radio signal guide (15, 16) for propagating a radio signal at the radio frequency, the microstrip radio signal guide being in travelling-wave coupling with an interaction zone (14) of the optical guide comprising material in which interaction between the optical signal components and the radio signal occurs. The microstrip radio signal guide element (15, 16) comprises an electrically conductive strip (15) juxtaposed with and extending along the interaction zone (14) on one side thereof and an electrically conductive ground plane (16) juxtaposed with and extending along the interaction zone (14) on an opposite side thereof.
    Transition radio signal guide elements (20, 21) in the form of Vivaldi antennas extending transversely to the microstrip (15) connect the microstrip radio signal guide element (15, 16) with a rectangular section wave-guide (18) and a matched load. Each of the transition radio signal guide elements (20, 21) comprises an opening of progressively varying width formed in the electrically conductive ground plane of the microstrip guide (16). Radio frequency signal resonators (24 to 27) extend the ends of the microstrip (15) and the small ends of the Vivaldi antennas.

    Abstract translation: 一种用于在光学和射频信号之间转换的检测器或调制器,包括用于传播具有与射频相应的频率不同的频率的两个光信号分量的光导(11〜14)和微带无线电信号引导件(15,16 ),用于以射频传播无线电信号,所述微带无线电信号引导件与所述光导体的相互作用区域(14)进行行波耦合,所述相互作用区域包括光信号分量和所述无线电信号之间的相互作用的材料。 微带无线电信号引导元件(15,16)包括一个导电条(15),该导电条(15)在其一侧上与相互作用区(14)并置并延伸,并且导电接地平面(16)与该相互作用并置并延伸 区域(14)。 以横向于微带线(15)延伸的维瓦第尔天线形式的过渡无线电信号引导元件(20,21)将微带无线电信号引导元件(15,16)与矩形波导管(18)和匹配负载 。 每个过渡无线电信号引导元件(20,21)包括在微带引导件(16)的导电接地平面中形成的逐渐变化的宽度的开口。 射频信号谐振器(24至27)延伸微带(15)的端部和维瓦第天线的小端。

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