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    • 6. 发明申请
    • DISCONTINUOUS LOOP ANTENNAS SUITABLE FOR RADIO-FREQUENCY IDENTIFICATION (RFID) TAGS, AND RELATED COMPONENTS, SYSTEMS, AND METHODS
    • 用于无线电频率识别(RFID)标签和相关组件,系统和方法的不连续环路天线
    • US20130293333A1
    • 2013-11-07
    • US13826407
    • 2013-03-14
    • Jeevan Kumar VemagiriRichard Edward WagnerMatthew Scott Whiting
    • Jeevan Kumar VemagiriRichard Edward WagnerMatthew Scott Whiting
    • H01F38/14
    • H01F38/14G06K19/0723H01Q1/2208H01Q1/2225H01Q7/005
    • Discontinuous loop antennas and related components, radio-frequency identification (RFID), tags, systems, and methods are disclosed. A discontinuous loop antenna is an antenna loop structure that includes a discontinuity portion. The discontinuous loop antenna can be coupled to an RFID chip to provide an RFID tag. The discontinuity portion decreases the loop inductance and tag capacitance, thus enabling the discontinuous loop antenna to have significantly larger loop area while still matching the chip impedance, resulting in dramatic increases in near-field sensitivity. Increased near-field sensitivity provides increased power harvesting efficiency during near-field coupling. As one non-limiting example, an RFID tag having a discontinuous loop antenna may achieve significantly more power harvesting from a RF signal than an RFID tag having a continuous loop antenna tuned to the same or similar resonant frequency. The discontinuity portion can be trimmed after fabrication allowing the resonant frequency of the RFID tag to be tuned.
    • 公开了不连续环形天线及相关组件,射频识别(RFID),标签,系统和方法。 不连续环形天线是包括不连续部分的天线环路结构。 不连续环形天线可以耦合到RFID芯片以提供RFID标签。 不连续部分减小环路电感和标签电容,从而使得不连续环形天线具有显着更大的环路面积,同时仍然匹配芯片阻抗,导致近场灵敏度的显着增加。 增加的近场灵敏度在近场耦合期间提供增加的功率收集效率。 作为一个非限制性示例,具有不连续环形天线的RFID标签可以比具有调谐到相同或相似谐振频率的连续环形天线的RFID标签从RF信号获得显着更多的功率收集。 可以在制造之后修剪不连续部分,从而调整RFID标签的谐振频率。