Non-Contact Measurement Method for 13.56 MHz RFID Tags
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.
Figure 1 shows a simplified setup. A loop antenna used to measure the frequencies is connected to the coaxial end(s) of one or two cables extending from a network analyzer. You can measure the resonant frequency of an RFID tag by holding the RFID tag in front of the measuring antenna.
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[ RFID Tags ] |
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Application note & Design Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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January 28, 2019, |
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5990-3443EN |
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3 MB |
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