APPARATUS AND METHOD FOR COMPENSATING THE AXIAL RATIO OF AN ANTENNA FOR TESTING RFID TAGS
    1.
    发明申请
    APPARATUS AND METHOD FOR COMPENSATING THE AXIAL RATIO OF AN ANTENNA FOR TESTING RFID TAGS 有权
    用于补偿用于测试RFID标签的天线的轴向比例的装置和方法

    公开(公告)号:US20120157006A1

    公开(公告)日:2012-06-21

    申请号:US13157325

    申请日:2011-06-10

    IPC分类号: H04B17/00

    CPC分类号: H01Q1/125 H01Q1/2225

    摘要: A method for compensating the axial ratio of an antenna for testing radio-frequency identification (RFID) tags and an apparatus using the method are provided. The method includes the following steps. An initial location of the RFID tag (or a tagged product) is set to obtain an initial vector. The RFID tag and the antenna are respectively rotated with a first axis and a second axis to detect characteristics of the RFID tag in all directions, and the first axis and the second axis are perpendicular. A polarization angle of the RFID tag is calculated according to the initial vector of the RFID tag and a location of the RFID tag after rotation. A compensation value is obtained through a look up table according to the polarization angle, so as to compensate for the axial ratio of the antenna.

    摘要翻译: 提供了用于补偿用于测试射频识别(RFID)标签的天线的轴比的方法和使用该方法的装置。 该方法包括以下步骤。 设置RFID标签(或标记产品)的初始位置以获得初始向量。 RFID标签和天线分别以第一轴和第二轴旋转,以检测RFID标签在所有方向上的特征,并且第一轴和第二轴垂直。 根据RFID标签的初始向量和旋转后的RFID标签的位置来计算RFID标签的偏振角。 通过根据偏振角的查找表获得补偿值,以便补偿天线的轴比。

    Apparatus and method for compensating the axial ratio of an antenna for testing RFID tags
    2.
    发明授权
    Apparatus and method for compensating the axial ratio of an antenna for testing RFID tags 有权
    用于补偿用于测试RFID标签的天线的轴比的装置和方法

    公开(公告)号:US08374555B2

    公开(公告)日:2013-02-12

    申请号:US13157325

    申请日:2011-06-10

    IPC分类号: H04B17/00

    CPC分类号: H01Q1/125 H01Q1/2225

    摘要: A method for compensating the axial ratio of an antenna for testing radio-frequency identification (RFID) tags and an apparatus using the method are provided. The method includes the following steps. An initial location of the RFID tag (or a tagged product) is set to obtain an initial vector. The RFID tag and the antenna are respectively rotated with a first axis and a second axis to detect characteristics of the RFID tag in all directions, and the first axis and the second axis are perpendicular. A polarization angle of the RFID tag is calculated according to the initial vector of the RFID tag and a location of the RFID tag after rotation. A compensation value is obtained through a look up table according to the polarization angle, so as to compensate for the axial ratio of the antenna.

    摘要翻译: 提供了用于补偿用于测试射频识别(RFID)标签的天线的轴比的方法和使用该方法的装置。 该方法包括以下步骤。 设置RFID标签(或标记产品)的初始位置以获得初始向量。 RFID标签和天线分别以第一轴和第二轴旋转,以检测RFID标签在所有方向上的特征,并且第一轴和第二轴垂直。 根据RFID标签的初始向量和旋转后的RFID标签的位置来计算RFID标签的偏振角。 通过根据偏振角的查找表获得补偿值,以便补偿天线的轴比。

    METHOD AND APPARATUS OF RADIO FREQUENCY TESTING
    3.
    发明申请
    METHOD AND APPARATUS OF RADIO FREQUENCY TESTING 审中-公开
    无线电频率测试的方法和装置

    公开(公告)号:US20120154122A1

    公开(公告)日:2012-06-21

    申请号:US13012807

    申请日:2011-01-25

    IPC分类号: G06K7/01

    摘要: A method and an apparatus of radio frequency (RF) testing are provided. The present method includes the following steps. A receiver and a transmitting antenna of a transmitter are controlled to move towards a direction, wherein the transmitter transmits a wireless signal to the receiver through the transmitting antenna. A specific power is measured every time when one of a plurality of predetermined sampling points is reached. In the foregoing moving and measuring steps, the relative distance and relative azimuth angle between the receiver and the transmitting antenna remain unchanged, and the frequency of the wireless signal also remains unchanged.

    摘要翻译: 提供射频(RF)测试的方法和装置。 本方法包括以下步骤。 发射机的接收机和发射天线被控制以朝向一个方向移动,其中发射机通过发射天线向接收机发送无线信号。 每当到达多个预定采样点之一时,就测量一个比功率。 在上述移动和测量步骤中,接收机和发射天线之间的相对距离和相对方位角保持不变,并且无线信号的频率也保持不变。