Philips Semiconductors Rev. 1.0 November 2002
13.56 MHz RFID Proximity Antennas mifare
®
(14443A)
4 PUBLIC
2 HOW TO USE THIS DOCUMENT
The chapter 3 of this document shows the basic principles of the RF interface as it used with MIFARE
®
. The
general understanding of this principle helps to do a fast and reliable antenna design based on Micore
reader ICs, but none of the given formulas (especially those in the annex) are necessary to design such an
antenna.
The chapter 4 describes some basic facts about the PCD antenna, its optimum size, and how to minimize
environmental influences. The given rules and design recommendations should generally be considered for
a PCD antenna design. This is true for a Micore based antenna design, too.
The chapter 5 gives an overview and comparison of the two antenna design principles for Micore antennas.
A help is given to find the best solution based on certain application requirements.
This application note cannot and does not replace any of the relevant datasheets.
“Card” in this document means a contactless smart card according to the ISO14443A (or MIFARE®) or a
contactless tag / label according to the ISO15693 (or I-Code
®
).
“Micore” includes all contactless reader ICs as the MF RC500, MF RC530, MF RC531, SL RC400 and the
CL RC632. For all of these ICs the antenna matching is the same.
Remarks and Comments are given in italic letters (blue marked).
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