SHORT DISTANCE WIRELESS COMMUNICATION NEAR FIELD COMMUNICATION (NFC)

HISTORY Wireless telegraph was invented by Marconi Initially L-C tuned circuit oscillator transmitter and super regenerative receiver formed the system one of the most important technologies for intuitive, simple and safe communication

Introduction to NFC It evolved from the combination of existing contactless technologies NFC can communicate with existing smart cards and reader, as well as NFC device Now a days it is generally implemented into mobile phones

How NFC WORKS NFC communicates via magnetic field induction through loop antennas Operating range - 13.56 MHz Working distance: up to 20 cm It has two operating modes: 1. Passive communication modes 2. Active communication modes

NFC hardware and software The most important component is NFC controller IC with an antenna Second important component is secure Element(SE) An application is written inside Java J2ME compliant mobile phone

Characteristics of NFC RF power output of several microwatts up to 100 milliwatts. Principally indoor operation. Omni- directional built in antennas. Simple construction and relatively low price . Battery-operated transmitter and receiver.

Specifications NFC Data Exchange Format (NDEF) NFC Record Type Definition (RTD) Smart Poster RTD Text RTD Uniform Resource Identifier (URI) RTD

Comparison

Application

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