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    SINGLE FREQUENCY LOW POWER RFID DEVICE
    12.
    发明申请
    SINGLE FREQUENCY LOW POWER RFID DEVICE 审中-公开
    单频低功率RFID设备

    公开(公告)号：WO2007109451A3

    公开(公告)日：2008-04-24

    申请号：PCT/US2007063805

    申请日：2007-03-12

    Applicant: SYMBOL TECHNOLOGIES INC ,  DURON MARK ,  GIEBEL JAMES ,  GOREN DAVID ,  WULFF THOMAS ,  KNADLE RICHARD T JR ,  BROCK CHRISTOPHER

    Inventor： DURON MARK ,  GIEBEL JAMES ,  GOREN DAVID ,  WULFF THOMAS ,  KNADLE RICHARD T JR ,  BROCK CHRISTOPHER

    IPC: H01Q21/00

    CPC classification number: G06K7/0008

    Abstract: Methods, systems, and apparatuses for a reader transceiver circuit are described. The reader transceiver circuit incorporates a frequency generator, such as a surface acoustic wave (SAW) oscillator. A reader incorporating the reader transceiver circuit is configured to read a tag at very close range, including while being in contact with the tag. The transceiver can be coupled to various host devices in a variety of ways, including being located in a RFID reader (e.g., mobile or fixed position), a computing device, a barcode reader, etc. The transceiver can be located in an RFID module that is attachable to a host device, can be configured in the host device, or can be configured to communicate with the host device over a distance. The RFID module may include one or more antennas. The RFID module may include a detector that is configured to determine proximity. The detector may act as a trigger.

    Abstract translation: 描述了用于读取器收发器电路的方法，系统和装置。 读取器收发器电路包括频率发生器，例如表面声波（SAW）振荡器。 包括读取器收发器电路的读取器被配置为在非常接近的范围读取标签，包括在与标签接触的同时。 收发器可以以各种方式耦合到各种主机设备，包括位于RFID读取器（例如，移动或固定位置），计算设备，条形码读取器等中。收发器可以位于RFID模块中 可附接到主机设备，可以在主机设备中配置，或者可以被配置为在一定距离上与主机设备进行通信。 RFID模块可以包括一个或多个天线。 RFID模块可以包括被配置为确定接近度的检测器。 检测器可以用作触发器。

    LOW RETURN LOSS RUGGED RFID ANTENNA
    13.
    发明申请
    LOW RETURN LOSS RUGGED RFID ANTENNA 审中-公开
    低回报损坏的RFID天线

    公开(公告)号：WO2007056157A2

    公开(公告)日：2007-05-18

    申请号：PCT/US2006042986

    申请日：2006-11-03

    Applicant: SYMBOL TECHNOLOGIES INC ,  KNADLE RICHARD T JR ,  DURON MARK

    Inventor： KNADLE RICHARD T JR ,  DURON MARK

    IPC: G08B13/14 ,  G06K19/06

    CPC classification number: G06K7/0008 ,  B66F9/0755 ,  G06K7/10316 ,  H01Q1/2216 ,  H01Q9/0435

    Abstract: Methods, systems, and apparatuses for RFID devices, such as reader antennas, are described. A reader antenna includes a quadrature hybrid coupler, a termination element, and an antenna, such as a patch antenna. The quadrature hybrid coupler has first, second, third, and fourth ports. The first port receives an input radio frequency RF signal. The second port outputs a first RF output signal. The third port outputs a second RF output signal. The second RF output signal is shifted in phase by 90 degrees relative to the first RF output signal. The fourth port is coupled to the termination element. The patch antenna has a first point coupled to the first RF output signal and a second point coupled to the second RF output signal. The patch antenna radiates a circularly polarized RF signal due to the received first and second RF output signals. The circularly polarized RF signal may be used to interrogate tags. Furthermore, the reader antenna is integrated into a ruggedized structure that provides environmental protection for the antenna, including providing shock absorption for impacts to the antenna.

    Abstract translation: 描述了诸如读取器天线的RFID设备的方法，系统和设备。 读取器天线包括正交混合耦合器，终端元件和天线，例如贴片天线。 正交混合耦合器具有第​​一，第二，第三和第四端口。 第一端口接收输入射频RF信号。 第二端口输出第一RF输出信号。 第三端口输出第二RF输出信号。 第二RF输出信号相对于第一RF输出信号相位偏移90度。 第四端口耦合到终端元件。 贴片天线具有耦合到第一RF输出信号的第一点和耦合到第二RF输出信号的第二点。 由于接收的第一和第二RF输出信号，贴片天线辐射圆偏振的RF信号。 圆偏振RF信号可用于询问标签。 此外，读取器天线被集成到为天线提供环境保护的加固结构中，包括为对天线的冲击提供减震。

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