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提高IC卡读写器的性价比是使其具有市场竞争实力的一个重要环节.该文以射频识别技术为基础,提出了基于Philips公司基站芯片RC500的ISO14443A协议读写器的设计与实现.文中首先介绍了RC500芯片结构及功能,并结合该芯片给出如何设计天线匹配电路;然后讲述了Mifareone卡防冲突机制,最后基于AT89S52单片机给出了读写器对Mifareone卡操作的软件流程.该读写器成本低,功耗低,性能稳定,抗干扰能力强.“,”To improve the ratio of performance and price of IC card reader thus market competitiveness,a Radio Frequency Identification reader complying with ISO 14443A standard was designed, which is based on RC500 chip in this paper. Firstly, the structure and function of RC500 chip was introduced, and antenna circuit was designed combined with the chip. Secondly, the Anti-collision Principle of Mifare one card was described. Finally, the flow chart working between card reader and Mifare one card based on AT89S52 chip was also shown. The card reader has many good features, such as low cost performance, low power consumption, steady quality and high performance of anti-interference.