ELECTRICALLY SMALL ANTENNA
    1.
    发明申请
    ELECTRICALLY SMALL ANTENNA 有权
    电气小天线

    公开(公告)号:US20090278754A1

    公开(公告)日:2009-11-12

    申请号:US12116556

    申请日:2008-05-07

    IPC分类号: H01Q1/00 H01Q9/16 H01Q1/28

    摘要: An electrically small antenna (ESA) for resolution of subwavelength features is disclosed. The ESA is on the order of meters and has an efficient transmit/receive capability. The ESA is 1/10 of the length of the equivalent dipole length, and may be scaled down to 1/10,000. The ESA includes a metamaterial shell. Such an antenna may include phase sensitive current injection in the metamaterial resonant structures for loss-compensation.

    摘要翻译: 公开了用于分波长波长特征的电小天线(ESA)。 欧空局的数量级为米,具有高效的发射/接收能力。 ESA是等效偶极子长度的1/10,可以缩小到1 / 10,000。 欧空局包括超材料壳。 这样的天线可以包括用于损耗补偿的超材料谐振结构中的相敏电流注入。

    IDENTIFICATION AND MAPPING OF UNDERGROUND FACILITIES
    2.
    发明申请
    IDENTIFICATION AND MAPPING OF UNDERGROUND FACILITIES 有权
    地下设施的识别和绘图

    公开(公告)号:US20090278725A1

    公开(公告)日:2009-11-12

    申请号:US12116540

    申请日:2008-05-07

    IPC分类号: G01S13/00

    摘要: A system or method of creating a map of voids in the ground based on a scattered electromagnetic signal includes traversing a receiver/probe in a near field above a target area; generating a signal from a signal transmitter, the signal having a predetermined wavelength λ; receiving a scattered signal with the receiver/probe, the scattered signal including indications of subsurface variations via reflection of the generated signal; and detecting evanescent components of the scattered signal to provide a predetermined resolution. The method includes the use of an electrically small antenna for resolution of subwavelength features. The metamaterial-based antenna is on the order of meters and has an efficient transmit/receive capability. The ESA is 1/10 of the length of the equivalent dipole length, and may be scaled down to 1/10,000. Such an antenna may include phase sensitive current injection in the metamaterial resonant structures for loss-compensation.

    摘要翻译: 基于分散的电磁信号在地面上产生空隙图的系统或方法包括在目标区域上方的近场中遍历接收器/探头; 从信号发射器产生信号,该信号具有预定波长λ; 通过接收器/探头接收散射信号,散射信号包括通过产生的信号的反射的地下变化的指示; 并且检测散射信号的消逝分量以提供预定分辨率。 该方法包括使用电小天线来分辨亚波长特征。 基于超材料的天线的数量级为米,具有高效的发射/接收能力。 ESA是等效偶极子长度的1/10,可以缩小到1 / 10,000。 这样的天线可以包括用于损耗补偿的超材料谐振结构中的相敏电流注入。