Abstract
The device has the 13.56MHz radio frequency identification (RFID) reader feature, and it can be used in the reading and writing in the aspect with purchase secure access module (PSAM) card, embedded secure access module (ESAM) card and dual-interface user card in the Electronic Toll Collection (ETC) industry. This article focuses on the design of the antenna and external matching circuit of the contactless IC card reader, lists software architecture and communication process, and obtains the optimum matching circuit through analyzing the data got from Agilent vector network analyzer
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