摘要
本文提出了一种用于手持式RFID系统的三层Minkowski分形阅读器天线。通过HFSS软件仿真,给出了三层Minkowski天线的回波损耗、方向图及天线增益。仿真结果表明,在2.425GHz的中心工作频率下,回波损耗为-30.22dB,带宽为100MHz。该三层Minkowski天线相比普通贴片天线具有更小的尺寸,并具有较宽的工作带宽和二维对称性,更符合RFID天线小尺寸、低功耗的要求。
This paper presents a kind of Minkow.ski fractal reader antenna composed of three layers which is designed for handheld RFID reader systems. By using simulation software HFSS, the return loss, radiation patterns and gains of the Minkowski antenna composed of three layers are computed. The simulation results show that it operates at 2. 425 GHz with a return loss of --30. 22 dB and a bandwidth of 100MHz, the size of the Minkowski is much smaller than a convenvion rectangular patch antenna. Moreover, it has medium bandwidth, and 2D symmetry, which is more satisfactory to the requirement of small size and low power loss.
出处
《电子测量技术》
2008年第11期30-33,共4页
Electronic Measurement Technology
