双频RFID读写器天线的研究与设计

Research and Design of Dual Frequency RFID Reader Antenna

射频识别(RFID)技术作为物联网发展的核心技术,已广泛应用于各个领域,包括车辆自动识别电子收费系统、公共交通、医药、零售、物流、金融等领域。但是,各国电磁波管制频段范围不尽相同,没有建立全球化行业标准,使得RFID系统在应用时产生许多问题。因此,本文设计了一款工作于2.45GHz和5.8GHz的双频RFID读写器天线,该天线在IE型贴片天线的基础上进行了改进,在E型贴片的对称位置处加上两个开路存根,仿真结果显示其具有较好的双频特性。

As the core technology of Internet of things, Radio Frequency Identification （RFID） technology has been widely used in various fields. However, the different electromagnetic wave bands from various countries and not establishing global industry standards have caused many problems in the application of RFID systems. Therefore, this paper designed a dual-frequency RFID reader antenna operating at 2.45GHz and 5.8GHz. The antenna is improved on the basis of the IE-type patch antenna. Two open stubs are added to the E-type patch. The simulation resuits showed that it has good dual-frequency characteristics.