UHF频段近场耦合RFID读写器天线设计

摘要

设计了一款用于UHF频段近场耦合RFID读写器天线.采用弯折偶板子天线结构,极大地减小了天线的尺寸.利用商业软件Zeland IE3D进行仿真设计和优化,给出了天线的反射系数、辐射特性和电流分布.在仿真的基础上,进行了实物制作并测试,实测与仿真吻合较好,满足实际应用的需求.%An UHF near-field RFID reader antenna is designed. Thie structure of folded-dipole is used to reduce the size of the antenna. Simulated results are computed by commercial software Zeland IE3D, the reflection coefficient, radiation characteristics and current distribution are given. Based on the simulation, the antenna is manufactured and tested, the results of simulation and test are in good agreement, to meet the needs of practical application.