3. RFID = Radio Frequency Identification
Electronic labeling and wireless identification
of objects using radio frequency
Tag carries with its information
◦ a serial number
◦ Model number
◦ Color or any other imaginable data
When these tags pass through a field
generated by a compatible reader, they
transmit this information back to the
reader, thereby identifying the object
4. A basic RFID system consists of these
components:
◦ A programmable RFID tag/inlay for storing item
data;
Consisting of an RFID chip for data storage
an antenna to facilitate communication with the RFID
chip
A reader/antenna system to interrogate the
RFID inlay
Application software and a host computer
system
5. The RFID tag consists of an integrated circuit
(IC) embedded in a thin film medium.
Information stored in the memory of the RFID
chip is transmitted by the antenna circuit
embedded in the RFID inlay via radio
frequencies, to an RFID reader
3 types
◦ Passive
◦ Semi-passive
◦ Active
6.
7. Frequency Appx. Read Range Data Speed Cost of Application
Tags
Low Frequency <5cm Low High • Animal Identification
(125kHz)
(passive) • Access Control
High Frequency 10 cm – 1m Low to Moderate Medium • Smart Cards
(13.56 Mhz) to Low
(passive) • Payment (paywave)
Ultra High Frequency 3m -7m Moderate to High Low • Logistics and Supply Chain
(433, 868-928 Mhz)
(passive) • Baggage Tracking
Microwave (2.45 & 5.8 10m -15m High High • Electronic toll collection
Ghz) (Autotoll)
(passive)
• Container Tracking
20m – 40m
(active)
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