Mifare 14443A - Default Chapter; Table of Contents

Philips Semiconductors Rev. 1.0 November 2002
13.56 MHz RFID Proximity Antennas mifare
®
(14443A)
2 PUBLIC
CONTENTS
1
INTRODUCTION......................................................................................3
1.1 Purpose and Scope..................................................................................3
1.2 Abbreviations .........................................................................................3
1.3 Reference Documents.............................................................................3
2 HOW TO USE THIS DOCUMENT.........................................................4
3 THE MIFARE
®
RF INTERFACE ...........................................................5
3.1 Energy Transmission..............................................................................6
3.2 Data Transmission PCD Æ PICC ..........................................................7
3.3 Data Transmission PICC Æ PCD ..........................................................9
4 THE PCD ANTENNA .............................................................................11
4.1 The PCD Antenna size .........................................................................11
4.2 Environmental Influences.....................................................................13
4.3 Antenna Shielding and Compensation ................................................14
5 ANTENNA DECISION GUIDE.............................................................20
6 ANNEX .....................................................................................................22
6.1 Theory for estimating the optimum PCD antenna radius .....................22
6.2 Parameters and Units............................................................................24
CONTACT INFORMATION................................................................................26