13.56MHz RFID阅读器的多天线选通设计

1356 MHz RFID阅读器的多天线选通设计

内容简介：介绍了一种低成本多天线选通的硬件实现方法，并利用Smith圆图进行仿真设计。经实验证明，在原天线电路中的低通滤波电路与匹配电路之间加入集成多路模拟开关，可使此天线的工作距离在接近原工作距离的基础上，满足一个射频识别（ Radio Frequency Identification， RFID）阅读器对应多个天线的要求。该方案既提高了阅读器的利用率，同时也降低了RFID系统成本。

Abstract：This paper introduces an implement method of low-cost multi-antenna gating, and uses Smith chart for simulation design.From the experimental results,an integrated multi-channel analog switch added between the low-pass filter and the matching cir-cuit,can meet the requirements of a Radio Frequency Identification ( RFID) reader communicating with multiple antennas when the antenna.s operating distance is close to its original. This scheme can improve the utilization of the reader and reduce the cost of RFID system.

作者：蔡坚勇, 林李金, 郑华, 陈银燕, 朱雨,

关键词：模拟开关, 多天线, 天线选通, Smith圆图,