A compact tag antenna which can mitigate the effect of the supporting metallic platform is proposed for UHF band (902-928 MHz) RFID systems in North America. The overall dimension of the proposed antenna is 88.4 mm x 18 mm x 6 mm, and it consists of the two parts, a meandered half wavelength radiator and proximity coupled-meandered feed network. The meandered feed network, which is layered between the radiator and ground plane, is designed to have a self inductance to cancel out the capacitive reactance (9-j127 Ω) of a tag chip. The antenna is analyzed by Ansoft's HFSS simulator. For various sizes of the metallic platforms, antenna performances, such as the impedance characteristics, radiation pattern, and maximum reading distance, will be measured and discussed.
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机译：在北美，针对UHF频段（902-928 MHz）RFID系统，提出了一种可以减轻支撑金属平台的影响的紧凑型标签天线。拟议天线的整体尺寸为88.4 mm x 18 mm x 6 mm，它由两个部分组成，一个是弯曲的半波长辐射器，另一个是耦合耦合弯折的馈电网络。蜿蜒的馈电网络位于辐射器和接地层之间，旨在具有自感，以抵消标签芯片的容抗（9-j127Ω）。天线由Ansoft的HFSS仿真器进行分析。对于各种尺寸的金属平台，将测量和讨论天线性能，例如阻抗特性，辐射方向图和最大读取距离。
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