Read e-book online Antenna designs for NFC devices PDF

By Dominique Paret

ISBN-10: 1221241281

ISBN-13: 9781221241281

ISBN-10: 1848218419

ISBN-13: 9781848218413

Near-field verbal exchange (NFC) allows the alternate of data among shut units.

The antenna is the integral point to rework an digital machine into an NFC process. For either idea and perform, this e-book provides intimately the layout applied sciences of alternative antennas. they have to meet the NFC ISO 18 092 and 21 481 criteria in addition to necessities by way of the NFC discussion board for commercial functions, via EMVCo for banking purposes and funds, and through CEN for public delivery.

In a very pedagogic manner, Antenna Designs for NFC units permits designers of speaking item structures and the web of items (IoT) to have entry to the mysteries of the layout of NFC antennas.

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Extra resources for Antenna designs for NFC devices

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It is physics; not marketing. Hence, it is necessary to review some of the theoretical and physical bases of the technical side of NFC. 1. Phenomenon of propagation and radiation Let us look at some of the conclusions on the physical concept of propagation of an RF electromagnetic (EM) wave in the classic case of radiation of a simple “Hertzian doublet”. Later on, we will use this simple example to aid an examination of concrete cases of NFC. Antenna Designs for NFC Devices, First Edition. Dominique Paret.

Before going into detail about this second part of the book, let us begin with some important preliminary remarks – two of them: 1) The contents of this part are not new. All the diagrams and couplings of antennas, and the calculations pertaining to them, which will be presented in the coming chapters, have been in existence since the very beginning of industrial activity in RFID, operating by magnetic coupling (near-field) – in concrete terms, since around 1985 in LF (125 kHz), with the component manufacturers NXP (Philips) Semiconductors, TI Texas Instruments and EM Microelectronics.

7. Remarks on contactless, RFID and NFC application Having made these general remarks, which are of fundamental importance, at a given date, for remote-powered systems (when the 26 Antenna Designs for NFC Devices transmitted wave provides enough energy for the tag to function), for existing semi-conductor technologies and the regulations in force, as a preliminary point, it is always interesting to know the regions of the nearfield and far-field zones which the contactless/RFID/NFC application envisaged is intended to function.

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Antenna designs for NFC devices by Dominique Paret

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