针对各种RFID标签工作频段不尽相同，技术标准不一致，而传统RFID读写器工作频带很窄且不支持多协议，造成对标签读取不便的问题，研究和设计了对多频段、多协议的电子标签兼容的RFID读写器。提出读写器工作频率可调和多通信协议的解决方案；在系统硬件中，微控制器采用ST公司的STM32 F103 VET6芯片，以TI公司低成本但配置灵活的CC1101作为射频收发模块；设计了频率可调的匹配网络；在软件上实现了读写器支持多种通信协议的功能。另外，还对具有尺寸缩减作用的弯折线偶极子天线设计做了仿真研究。该读写器具有适应性强，成本低等特点，给RFID的应用带来了便捷。%The frequency bands and the technical standards of the RFID tags are often different, and the RFID reader often has very narrow operating frequency bands and can’t support mutl-protocal, which will cause problems when the RFID reader read the data from the RFID tags. To overcome this problem, a smart multi-frequency bands and multi-protocol RFID reader is research and designed. The system scheme of the adjustable operating frequency and the multi-protocol of the RFID reader is proposed. In the hardware system, the ST’s STM32F103VET6 chips and the TI’s CC1101 chips are selected to configu-rated as the mcu and RF transceiver modules. The adjustable frequency matching network is also de-signed, and the multi-protocol functions are realized in the software system. In addition, the bending wire dipole antenna is studied and simulated to reduce the size of the antenna. The reader has a strong adapta-bility, low cost, which can bring the convenience of RFID applications.
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