Non-Contact Measurement for 13.56 MHz RFIDs
应用文章
Non-Contact Measurement Method for RFIDs
RFIDs, also called IC cards or ID tags, are devices that make it possible to detect the presence of objects and verify their identifications without contacting them. RFIDs have been used since the 1980’s but initially their use was limited to maritime transports, traffic information systems, and some other special applications. Since the middle of 1990’s, RFIDs have been miniaturized at an accelerated rate and they are now widely used. Currently, a number of standards exist that define the frequencies, communication methods, and purposes of RFIDs. This document gives an overview of how to perform non-contact measurements of the resonant frequencies of 13.56 MHz RFID tags. The measurement method introduced in this application note has a proven track record in the fields of development, manufacturing, and maintenance.