超高频RFID系统与其他无线网络的电磁兼容性研究

无线射频识别（RFID）技术与互联网、移动通信网络等技术结合应用,可以实现全球范围内物品跟踪与信息共享。然而,RFID作为无线通信系统,其发射的射频信号可能对其它无线网络造成干扰,降低系统性能,影响系统正常工作。中国已经发布了840～845MHz和920～925MHz频段RFID的试用标准,其中920～925MHz的RFID应用和点对点立体声广播处在一个同一个频段,与无中心对讲机和GSM网络处在相邻频段,RFID系统与这些系统之间的电磁兼容性就成为系统能否稳定实现的最主要因素。

Electromagnetic Compatibility Between UHF RFID and Other Radio Networks

Global scale article track and information share can be achieved by combining Radio Frequency Identification (RFID) technology with Internet and mobile communications network technology. However, the RFID system emits electromagnetic waves, and it probably interferes with other radio networks. China has issued a probationary standard to regularize the application of RFID on 840-845 MHz and 920-925 MHz. The RFID application on 920-925 MHz is in the same frequency band with point to point stereo broadcast service, and is adjacent to non-center interphone service and GSM service. Electromagnetic compatibility is the factor to be considered most in the RFID system because it determines the stable interworking relationship between the RFID system and the systems in adjacent bands.