Microstrip patch antennas has many advantage due to light weight and small size, low cost but also have some disadvantage as low gain , narrow band width these are the two important parameters. This design shows how we can increase the performance of the patch antenna by using metamaterials or how we can improve the gain & bandwidth. Here it provide the introduction of meta materials and microstrip patch antenna after that describe the parameter of microstrip patch antenna which can improve by using metamaterials and discuss future scope and application of metamaterials.[6]. The Metamaterial based antenna is designed for some improvement in the performance of directivity gain, return loss and size of circuit area. The aim is to design and fabricate metamaterial antenna and study the effect of antenna dimensions Length (L),Width (W) and substrate parameters relative Dielectric constant (r), substrate thickness on Radiation parameters of Band width. Low dielectric constant substrates are generally preferred for maximum radiation. The conducting patch can take any shape but rectangular and circular configurations are the most commonly used configuration. Other configurations are complex to analyze and require heavy numerical computations. The length of the antenna is nearly half wavelength in the dielectric; it is a very critical parameter, which governs the resonant frequency of the antenna. In view of design, selection of the patch width and length are the major parameters along with the feed line depth. The results obtained after simulation in High Frequency Structure Simulator (HFSS) were so much effective with the considerable enhancement in the values of directivity, bandwidth. Modelling of this omega shaped patch antenna has revealed results that are suitable AISSMS COE, M.E. E&TC (MICROWAVE) YEAR 2014-15 14 METHODOLOGY for RFID antenna design. It simulated a rectangular patch antenna with metamaterial included which has much higher directivity and bandwidth that can be employed for UHF band which is one of the pre requisite of the following era. RFID has been one of the greatest contributions of the 21st century. It has many implementations in different fields may be in medical, military applications, transportation, tracking items etc. The main barrier for widespread deployment of this technology is its cost barrier which can be resolved through use of modern technologies for building circuits with minimal costs.

1. GUIDED By:-VIDYA V. DESHMUKH
SUBMIITED BY:-NIKITA G. JANJAL
Course: M.E.-I, E&TC, ( Microwave Engineering)
12.05.2015AISSMS COE,PUNE
1
MICROSTRIP ANTENNAS
FOR
RFID APPLICATION
ROLL NO. 8361

2. Content
12.05.2015AISSMS COE,PUNE
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• Objective
• Introduction
• Literature survey
• Comparative Study
• Techniques
• Advantages , Disadvantages, Applications
• Conclusion
• References

3. OBJECTIVE OF SEMINAR
• Study of various characteristics of microstrip antennas.
• Study of various methods used in microstrip antenna for RFID
application.
• Comparative study of results of various configuration used in the
designing of antenna for RFID application.
• Study of how the implementation of microstrip antenna in RFID application
can be made more efficient using various techniques and configuration.
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4. INTRODUCTION
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What is RFID ?

5. 12.05.2015AISSMS COE,PUNE
5
• An MSA in its simplest form consists of a radiating patch on one side
of a dielectric substrate and a ground plane on the other side.
• Various configuration of MSA shapes which involves square, circular,
triangular, semicircular, sectoral and annular ring shapes are used to make
MSA more efficient in RFID application.
• Implementation of Microstrip antenna in the design of RFID application.
• Various techniques and configuration are use to overcomes the
disadvantages of microstrip antenna in RFID application.
INTRODUCTION

6. Literature Survey
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6
• There are many technique are used to get the standard result, which include
parameter : range of RFID, frequency, Bandwidth, directivity and Gain.
• Microstrip antenna having disadvantage of low Gain and narrow B.W, so
different techniques is used to overcomes these drawbacks ,and that
techniques having many own advantages and disadvantages.
• As one Example omega shaped antenna increases the range of RFID using
metamaterial and it gives best return loss -10dB .[4]

7. Different configuration
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• Configuration of antenna used for RFID:
 omega shapes ,
 annular ring slot antenna ,
 bow –tie ,
 c-shaped,
 hybrid patch coupler,
 planar inverted-F antenna (PIFA).
• Characteristics :
 Gain,
 B.W.,
 Power transmission,
 RL ,
 Directivity.

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RFID

9. Sr.
No
Paper
Name &
Publication
Year and
Publication
Author’
s Name
Disadvantages Advantages Result Applications
1. INTEGRATE-
-D COMPACT
CIRCULAR
POLARIZATI
ON
ANNULAR
RING SLOT
ANTENNA
DESIGN FOR
RFID
READER
(HFSS)
2013
PIER
Jun Lin
Zhang
and Xiao
Qing
Yang*
•Axial ratio
sensitive to the
amplitude
balance and
phase
differences
•complicated
to fabricate.
• Unstable FR4
substrate
• Antenna not
only has a wide
impedance
bandwidth, but
also has a wide
axial ratio
bandwidth.
• Gain is larger
than 1dB
• Easy
fabrication and
low cost.
• Isolation
between the
two ports is
almost lower
than -10 dB
within the
operating
bandwidth
.
• A good
amplitude
balance with
90± phase
difference at
two output
ports.
•UHF band
RFID
application
•Used for mass
production
12.05.2015AISSMS COLLEGE OF ENGG.9

10. Sr.
No.
Papers
Name &
Publiction
Year
And
Publication
Autho
r’s
Name
Disadvantag
es
Advantages Result Appliaction
2. COMPACT
MICROSTRIP
RFID TAG
ANTENNA
MOUNTABLE
ON
METALLIC
OBJECTS
(HFSS)
2011
Elsevier
Wenbo
Zeng ∗,
Jia
Zhao,
Baozh
ong
Ke,
Qiqi
Wu
•Variation in
the antenna
input
impedance,
radiation
pattern, and
resonant
frequency
• Good
performance in
terms of
impedance
matching and
power
transmission
.
• Observed
return loss &
PTC in open air
and when
antenna mounted
on the metal
plate
•observed the
radiation pattern
of antenna in
open air & by
mounting on
50x50 cm2
copper.
Retail,
transpotation
& ditribution
logistics’
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10

11. Sr.
No
Paper
Name&
Publication
year and
Publication
Author’s
Name
Disadvantage Advantages Results Applicatio
n
3. TRI-BAND
ANTENNA
FOR RFID
HANDHELD
APPLICATIO
N USING
OPTIMAZATI
ON
TECHNIQUE
(MATLAB)
2013
IEEE
A. M.
Montaser
1, K. R.
Mahmoud
2, Adel B.
Abdel-
Rahman3,
H. A.
Elmikati4
Senior
Member
IEEE
•Hand held
cover and
humab hand
will affect on
return loss.
•And for the
same antenna
efficiency is
decreases.
•Limited SAR
•Adequate
matching and
quite stable
omnidirectional
patterns.
•Low
profile,high
radiation
efficiency,low
cost
•SAR in
hand at
different
frequency.
•Radiation
patter at
different
frequency.
•RFID
systems
but also for
several
multiband
application
s
•For
wireless
communic
ation
system.
12.05.2015AISSMS COLLEGE OF ENGG.11

12. Sr.
No.
Paper’s
Name&
Publication
year And
Publication
Author’s
Name
Disadvantages Advantage
s
results Applicati
ons
4. COMPACT
LOOP
ANTENNA
FOR NEAR-
FIELD AND
FAR-FIELD
UHF RFID
APPLICATIO
NS
(HFSS)
2013
PIER’s
Zeming
Xie2,
•The near-field
reading
performance is not
degraded but the
far-field reading
range,
with a common
dipole RFID tag, is
approximately
1.17 m, but the
performance is
seriously affected
by surrounding
•Proposed
antenna
realized good
size
reduction,
uniform
magnetic
near-Field
distribution
and available
far-field
gain.
•Input impedance
with various
parasitic
element.Resistance,
Reactance.
•Parametric sweep
of the proposed and
conventional
antenna.
•Simulated and
measured S-
parameter.
•Measured gain at
the X-axis.
mobile
system
RFID
applicatio
n.
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13. Sr.
No.
Paper ‘s
Name&
Publication
year and
Publication
Author’s
Name
Disadvantage
s
Advantages results Application
5. METAMATERI
-AL BASED
PATCH
ANTENNA
WITH
OMEGA
SHAPED
SLOT FOR
RFID SYSTEM
(HFSS)
2014 IEEE.
Shankar
Bhattach
arjee,
Rajesh
Saha
•Cost barrier
•Increasing
directivity, the
coverage area
also increases
of the antenna
with
minimal cost
and increase
control over
the radiation
pattern
•Much
higher
directivity
and
bandwidth
that can be
employed
for UHF
band
•Gain of
normal
microtrip
antenna &
Omega shaped
metamaterial
antenna
•Directivity of
both antenna
•Impedance
matching
graph.
Medical,
military
applications,
transportation,
tracking items
etc.
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14. Technique
• Metamaterial based patch Omega shaped antenna is one of the
technique used to increasing the range of RFID.
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Plane wave in a backward medium.[4]
• A material which has the property of negative permeability and Permittivity
values and this material is called metamaterial

15. 12.05.2015AISSMS COE,PUNE15
Model of
rectangular patch
antenna.[4]
Model of Omega-
shape metamaterial
structure antenna.[4]

16. 12.05.2015AISSMS COE,PUNE16
S11 parameter of both rectangular patch antenna and Omega-shape metamaterial
structure antenna.[4]

17. 12.05.2015AISSMS COE,PUNE17
• Gain of both rectangular patch
antenna and Omegashape
metamaterial structure antenna
with Phi=0deg.[4]
• Gain of both rectangular
patch antenna and Omegashape
metamaterial structure antenna
with Phi=90deg.[4]

18. 12.05.2015AISSMS COE,PUNE18
• Smith chart
of rectangular patch antenna.[4]
• Smith chart of Omega-shape
metamaterial structure antenna.[4]

19. 12.05.2015AISSMS COE,PUNE19
• Directivity of both rectangular patch
antenna and Omega- shape metamaterial
structure antenna with Phi= 90deg.[4]
• Directivity of both rectangular patch
antenna and Omega- shape metamaterial
structure antenna with Phi= 0deg.[4]

20. 12.05.2015AISSMS COE,PUNE20
μr= -191
εr= -28.58
• Permittivity of Omega- shape metamaterial
structure antenna.[4]
•Permeability of Omega- shape
metamaterial structure antenna.[4]

21. 12.05.2015AISSMS COE,PUNE21
ADVANTAGES:
 easy fabrication and low cost.
 good performance in terms of impedance matching and power
transmission.
 higher directivity and bandwidth.
 Gain is large.
 Low profile, high radiation.
DISADVANTAGES:
 The poor characteristics of the cheap FR4 substrate.
 performance of conventional could degraded seriously.

22. 12.05.2015AISSMS COE,PUNE22
• In military application we can used all these antenna
approaches.
• In medical, Transportation and Tracking application we can used
it..
• In sensor detection, remote aerospace applications, public safety,
high frequency battle field communication, improving ultrasonic
sensors, solar power management and for high gain antennas .
APPLICATION

23. CONCLUSION
• Impedance matching and power transmission between the antenna and RFID over
the UHF RFID frequency band of 902~ 928 MHz has been improved by using the
planar –F inverted antenna.
• Bandwidth of microstrip antenna has been increases by using the OMEGA shaped
antenna
• Getting wide impedance Bandwidth and axial ratio bandwidth using annular ring
slot antenna,
• It gives features like reduces size of antenna and low cost and easy fabrication too.
And it gives mass production.
• folded loop antenna gives high in the rang of RFID so you can detect tag which is
placed far way from the reader.
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24. REFERENCES
[1] Jun Lin Zhang and Xiao Qing Yang 'INTEGRATED COMPACT CIRCULAR
POLARIZATION ANNULAR RING SLOT ANTENNA DESIGN FOR RFID'
Progress In Electromagnetics Research Letters, Vol. 39, 133,140, 2013 READER
[2] Wenbo Zeng ‘COMPACT MICROSTRIP RFID TAG ANTENNA MOUNTABLE
ON METALLIC OBJECTS' Procedia Engineering 16 ( 2011 ) 320 – 324
[3] K. R. Mahmoud 'Design of A Compact TRI-BAND ANTENNA FOR RFID
HANDHELD APPLICATION USING OPTIMAZATION TECHNIQUE' 978-1-
4673-6222-1/13/201.
[4] Shankar Bhattacharjee, Rajesh Saha ‘METAMATERIAL BASED PATCH
ANTENNA WITH OMEGA SHAPED SLOT FOR RFID SYSTEM’©2014
IEEE.
[5] Xiaozheng Lai1,’ COMPACT LOOP ANTENNA FOR NEAR-FIELD AND FAR-
FIELD UHF RFID APPLICATIONS’ Progress In Electromagnetics Research C,
Vol. 37, 171,182, 2013.
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25. THANK YOU !!
QUESTION and
ANSWER ??
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