This document provides an overview of RFID concepts and technology. It discusses the historic development of RFID from identification systems in World War 2 to modern applications. The current RFID technology section describes the components of RFID tags, including chips, antennas, and batteries. It also discusses the different energy sources for tags, common frequency bands used, standards, and how RFID systems work along with a backend database. Application areas mentioned include tracking people, animals, documents, supporting manufacturing and healthcare, attendance tracking, and automatic toll payments.

1. Created by-Narsa Ram
ECE-173/12
Dated-07/11/2015
Credits to-Amit sir/Web Tek Labs
Private Ltd.

2. RFID concepts
points to be covered are as
follows:-
1)Introduction
2)Historic development
3)Current RFID
technology
3.1)Energy sources
3.2)Frequency
bands
3.3)standards
3.4)RFID system
4)Working principle
5)security
6)Application

3. 1)Introduction:- RFID
Radio Frequency
Identification tags or
simply “tags” are
small transponders
that respond to
queries from a reader
by wirelessly
transmitting a serial
number or similar
identifier using radio
frequency waves.

4. 2)Historic development:-
The first RFID application was
the “identification friends or
foe”(IFF) system ans it was used
by the british in the 2nd world
war.The first commercial RFID
application was “Electronic
Article surveillance”(EAS). It was
developed in the seventies as a
theft prevention system.

5. 3)Current RFID technology:-
This section describes out of
which parts RFID tags consists
of,how they work in principle and
what types of tags do exist.it
focuses on how tags are powered
and what frequency bands are
used.
RFID transponders In general
consists of:-1)chip 2)Antenna
3)case 4)battery(for active tags
only)

6. 3.1)Energy sources:-3-types of
transponders(tags) in relation to power or
energy
a)Passive tags-do not have an internal power
source
-rely on power induced by reader through
mutual inductance
-ranges between 2mm and a few meters.
b)semi-passive tags-sometimes uses battery
depending upon application
c)Active tags-contain an internal power
source
-signal strength is high as compare to semi
and passive tags
3.2) Frequency bands-
low frequency : 30-500khz
High frequency :10-15Mhz
Ultra frequency :850-950Mhz,2.4-
2.5Ghz,5.8Ghz.
3.3)standards:-A short list of RFID standards
follows: ISO 11784, ISO 11785, ISO 14223,
ISO 10536, ISO 14443, ISO 15693, ISO
18000.

7. 3.4)RFID system:-A rfid reader and
few tags are in general of little
use.the retrieval of a serial
number does provide much
information to the user nor does it
help to keep track of items in a
production chain.the real power of
rfid comes in combination with a
backend that stores additional
information such as descriptions
for products and where and when
a certain tag was scanned.

8. 4)Working principle:-Transfer of
energy(data) from one
ckt(reader)to
another(transponde)through a
shared magnetic field by mean of
mutual inductance powers
microchip
-circuitry uses load modulation to
send data back to reader.

9. 5)Security:-
-privacy
-Authentication
-Attack ranges
-Attacks again RFID system
6) Application area:-
-people,animal etc tracking
-Document tracking
-Health care
-Manufacturing
-Attendance based system
like classes,offices etc…
-Laptop tracking
-used in Automatic toll tax
payment

10. “We need technology in ev
ery classroom and in every
student and teacher’s hand
because it is the pen and
paper of our time,and it’s
the lens through which we
experience much of this
world” –David Warlick
THANKU YOU
??????