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Radio Frequency IDentification

Ramannagari Shyamprasad Goud

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Outline

Description of the Technology

What is RFID Benifits of RFID Technology

Technical Information

RFID System Principle circuit of RFID-system Coupling Overview RFID Circuitry

RFID Standards

Practical Information

Real World Applications

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What is RFID ?

Short range radio technology used to communicate information between

a stationary location and a movable object

Subset of Auto-identification Techniques

Allows for identification of objects without any human intervention

Data is retrieved and stored remotely using wireless technology

Can store wide variety of data

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Benifits of RFID Technology No line of sight access needed for reading tag

Read range is much larger than barcodes

Multiple tags can be read simultaneously by a reader

Detailed information collected in one pass rather than individual scans

of a product

More data can be stored than a barcode which has only an identification

number

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RFID System

TagReaderAntenna

Sensor

ControllerReader

Softwaresystem

Communication Infrastructure

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RFID System

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Principle circuit of an RFID-system

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Coupling Overview Close Coupling Systems

Range: < 1cm

Frequencies: 125 to 134 KHz

Based on inductive coupling or capacitive coupling

E.g for door locking system

Remote Coupling Systems Range: < 1m

Frequencies: 135 KHz to 13.56 MHz

Mostly Based on inductive coupling

E.g for contcated Smart cardless systems

Long Range System Range: >1m

Frequencies: 860 MHz to 950MHz or 2.45 GHz Also known as backscatter systems

E.g for Logistics applications

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RFID Circuitry

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D1

D2

C4C3C2

C1

D3

D4 C6R1R4

R2

R3

R5

C5L1 L2

Reader Transponder

Mutualinductance

Rectifier Limiter

AC Voltage

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RFID Standards

Standards for logistics applications ISO/IEC 18000 ISO/IEC 15961-15963 ISO/IEC 15418

Standards for automatic livestock identification ISO/IEC 11784

ISO/IEC 11785 ISO/IEC 14223

Standards for vicinity coupling cards ISO/IEC 10373

ISO/IEC 10536 ISO/IEC 14443 ISO/IEC 15693

Supply Chain Management

EPC (Electronic Product Code)

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Real World Applications

Supply chain management

Tranportation Payment Systems

Building Entrances

Parking Automation

Library book Tracing

Animal Identification

Grocery Stores

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Future work

Different types of rectifier structures

Rectifier circuit using Schottkey barrier diode

Rectifier circuit using MOSFETs

Different limiter structures

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References

RFID Journal The Worlds RFID Authority. What is RFID

http://www.rfidjournal.com/article/articleview/1339/1/129/

Finkenzeller, K.,RFID Handbook [Electronic Resource]: Fundamentals

and Applications in Contactless Smart Cards and Identification,

translatedby Rachel Waddington, Chichester, England; Wiley, Hoboken,N. J., c2003

Wikipedia. Radio Frequency Identification.

http://en.wikipedia.org/wiki/RFID

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http://www.rfidjournal.com/article/articleview/1339/1/129/http://www.rfidjournal.com/article/articleview/1339/1/129/