PIFA and RFID tag using the same
    11.
    发明申请

    公开(公告)号:US20060145927A1

    公开(公告)日:2006-07-06

    申请号:US11297687

    申请日:2005-12-07

    IPC分类号: H01Q1/38

    摘要: Provided is a planar inverted-F antenna (PIFA) which has a Co-Planar Waveguide (CPW) feeding structure and can be attached to a metal surface, and an RFID tag using the same. The PIFA includes a radiation patch layer; a Co-Planar Waveguide (CPW) feeding layer; a feeding probe; and a short-circuit. The CPW feeding layer includes a feeding means and a ground surface. The feeding probe electrically connects the radiation patch layer and the feeding means and provides a Radio Frequency (RF) signal to be radiated to the radiation patch layer. The short-circuiting means short-circuits the radiation patch layer and the ground surface through the dielectric layer. The PIFA can be applied to a passive RFID tag. Impedance matching between the antenna and the RFID chip is possible. Also, the PIFA can easily control resonant frequency of the antenna and reactance.

    Data storing apparatus and method for RFID tags with sensors
    12.
    发明授权
    Data storing apparatus and method for RFID tags with sensors 失效
    具有传感器的RFID标签的数据存储装置和方法

    公开(公告)号:US07538678B2

    公开(公告)日:2009-05-26

    申请号:US11542479

    申请日:2006-10-03

    IPC分类号: G08B13/14

    摘要: Provided is a data storing apparatus and method for Radio Frequency Identification (RFID) tags with sensors. The apparatus includes: a first storing block which includes a kill password storage and an access password storage; a second storing block which includes an Electronic Product Code (EPC) storage, a protocol control storage, and an error check storage storing a Cyclic Redundancy Checking (CRC) code for detecting a transmission error; a third storing block which includes a tag identifier storage storing a tag identifier including a manufacture model and a serial number of the tag; and a fourth storing block which includes an initial sensor data storage storing initial information of the sensor, a real-time information storage, a maximum/minimum data storage storing maximum/minimum values, a sensor data storage storing sensing data actually measured through the sensor embedded in the RFID tag.

    摘要翻译: 提供了一种具有传感器的射频识别(RFID)标签的数据存储装置和方法。 该装置包括:第一存储块,其包括杀死密码存储和访问密码存储; 包括电子产品代码(EPC)存储器,协议控制存储器和存储用于检测传输错误的循环冗余校验(CRC)代码的错误检查存储器的第二存储块; 第三存储块,其包括存储包括标签的制造模型和序列号的标签标识符的标签标识符存储器; 以及第四存储块,其包括存储传感器的初始信息的初始传感器数据存储器,实时信息存储器,存储最大/最小值的最大/最小数据存储器,存储通过传感器实际测量的感测数据的传感器数据存储器 嵌入RFID标签。

    Antenna using proximity-coupled feed method, RFID tag having the same, and antenna impedance matching method thereof
    17.
    发明申请
    Antenna using proximity-coupled feed method, RFID tag having the same, and antenna impedance matching method thereof 失效
    使用接近耦合馈电方法的天线,具有该天线的RFID标签及其天线阻抗匹配方法

    公开(公告)号:US20070080867A1

    公开(公告)日:2007-04-12

    申请号:US11526457

    申请日:2006-09-25

    IPC分类号: H01Q1/38

    摘要: An antenna, a RFID tag using the same, and an antenna impedance matching method thereof are provided. The antenna includes: a radiation patch for deciding a resonant frequency of the antenna; a ground plate disposed in parallel to the radiation patch; and a feeder disposed between the radiation patch and the ground plate in parallel for providing a RF signal to an element connected to the antenna, wherein the feeder includes a microstrip feed line proximately coupled to the radiation patch by being formed perpendicularly to the resonant length direction of the radiation patch.

    摘要翻译: 提供一种天线,使用其的RFID标签及其天线阻抗匹配方法。 该天线包括:用于确定天线的谐振频率的辐射贴片; 与辐射贴片平行布置的接地板; 以及平行地设置在辐射贴片和接地板之间的馈电器,用于向连接到天线的元件提供RF信号,其中馈电器包括通过垂直于谐振长度方向形成的靠近辐射贴片的微带馈电线 的辐射贴片。

    Antenna using proximity-coupled feed method, RFID tag having the same, and antenna impedance matching method thereof
    18.
    发明授权
    Antenna using proximity-coupled feed method, RFID tag having the same, and antenna impedance matching method thereof 失效
    使用接近耦合馈电方法的天线,具有该天线的RFID标签及其天线阻抗匹配方法

    公开(公告)号:US07629929B2

    公开(公告)日:2009-12-08

    申请号:US11526457

    申请日:2006-09-25

    IPC分类号: H01Q1/38

    摘要: An antenna, a RFID tag using the same, and an antenna impedance matching method thereof are provided. The antenna includes: a radiation patch for deciding a resonant frequency of the antenna; a ground plate disposed in parallel to the radiation patch; and a feeder disposed between the radiation patch and the ground plate in parallel for providing a RF signal to an element connected to the antenna, wherein the feeder includes a microstrip feed line proximately coupled to the radiation patch by being formed perpendicularly to the resonant length direction of the radiation patch.

    摘要翻译: 提供一种天线,使用其的RFID标签及其天线阻抗匹配方法。 该天线包括:用于确定天线的谐振频率的辐射贴片; 与辐射贴片平行布置的接地板; 以及平行地设置在辐射贴片和接地板之间的馈电器,用于向连接到天线的元件提供RF信号,其中馈电器包括通过垂直于谐振长度方向形成的靠近辐射贴片的微带馈电线 的辐射贴片。

    Transmit/receive antenna system having offset feed points for high isolation
    20.
    发明授权
    Transmit/receive antenna system having offset feed points for high isolation 有权
    发射/接收天线系统具有高隔离的补偿馈电点

    公开(公告)号:US08081062B2

    公开(公告)日:2011-12-20

    申请号:US12088567

    申请日:2005-12-29

    IPC分类号: G08B25/10 H01Q21/00

    CPC分类号: H01P5/18

    摘要: Provided is an antenna system with high isolation. The high-isolation antenna has transmission ports of a transmission antenna and reception ports of a reception antenna highly isolated from each other by using quadrature hybrid couplers. The antenna system includes: a transmission antenna having two feed points for transmitting signals; a reception antenna having two feed points for receiving signals; a transmission hybrid coupler which is connected to the two feed points of the transmission antenna and transmits transmission signals which have a phase difference of 90° with each other; and a reception hybrid coupler which is connected to the two feed points of the reception antenna and receives reception signals which have a phase difference of 90° with each other. The signals leaking from the two feed points of the transmission antenna to the two feed points of the reception antenna are offset.

    摘要翻译: 提供了具有高隔离度的天线系统。 高隔离天线具有通过使用正交混合耦合器彼此高度隔离的发送天线和接收天线的接收端口的传输端口。 天线系统包括:发射天线,具有用于发射信号的两个馈电点; 具有用于接收信号的两个馈送点的接收天线; 传输混合耦合器,其连接到发射天线的两个馈电点,并发射相位差为90°的发射信号; 以及接收混合耦合器,其连接到接收天线的两个馈电点,并接收彼此具有90°的相位差的接收信号。 从发送天线的两个馈电点泄漏到接收天线的两个馈电点的信号被偏移。