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1. Literature Review of Micro Strip Patch Antenna Design with Rectangular Patch
for Various Substrates
Imran Khan, Dhanushree M R, Shivaprasad K M, Sagar K L, Lavanya K
Dept. of Electronics & Communication Engg.
Government Engineering College Ramanagara, India

2. Contents
 Abstract
 Introduction
 Summary of Literature Review
 Comparison
 Conclusion

3. ABSTRACT
 In the present world it is necessary to have antennas which are very small in shape, low cost, less energy
consuming, with very good radiation efficiency, gain and return lose. In this requirements the better option is
patch antenna with patch in rectangular shape, it has various applications like mobile communications, global
position system (GPS), wireless local area network (WLAN) and worldwide interoperability for microwave
access (WiMAX).
 Rectangular patch antenna is capable of two or three frequency band operations the rectangular patch can
easily be designed and analyzed. This paper presents comparative study on different substrates that can be used
in a rectangular micro strip patch antenna i.e., FR4-epoxy, RT Duroid, Bakelite, Taconic at 2.4 Ghz operation
frequency.
 The objective of this review is to analyze and recommend the best substrate that can be used for rectangular
patch antennas with the frequency of 2.4Ghz. The performance parameters like gain and return loss were
compared.

4.  Wireless communication is the fastest growing field of technology which has captured the
attention of social life in the present century.
 Micro strip patch antenna is a most common type of micro strip antenna. The dielectric
substrate has a conductive patch of any planar or non-planar geometry on one side and ground
plane on the other side.
Introduction

5. Introduction (contd…)
Some of the dielectric substrates
 Dielectric substrates plays a significant role in MSPA,influencing its overall performance.Hence
in order to design an MSPA one should know about the various available substrates.
 FR-4
 Taconic
 RT duroid
 Bakelite

6. Introduction (contd…)
Comparisons of different properties of substrate materials
Parameters RT Duroid Bakelite FR4 epoxy Taconic
Di-electric constant 2.2 4.8 4.4 3.2
Density
(kg/m^3)
2200 1810 1850 -
Surface resistivity
(Mohm)
3x10^7 5x10^10 2x10^5 1x10^7
Tan δ 0.0009 0.002 0.02 0.003
Water absorption 0.02% 0.5-1.3% <0.25% <0.02%
Tensile strength(MPa) 450 60 <310 -
Volume resistivity
(Mohm cm)
2x10^7 3x10^15 8x10^7 1x10^7
Break down voltage (kv) >60 20-28 55 -
Peel strength
(N/mm)
5.5 - 9 12

7. Parameters Value(mm)
Wg 100
Lg 100
Wp 40
WL 28.44
Hg 1.5
Tx 2.94
εr 4.3
t 0.035
Insetw 1.5
Insetl 6
LITERATURE SURVEY
01) FR-4 epoxy [11]
Dimensions
Top view of Antenna

8. S1 Parameter
Parameter Value
Dielectric constant 4.3
Area 10000mm2
Resonating frequency 2.4Ghz
Return loss, db -20.405
VSWR 1.211
Directivity, db 7.471
Gain, db 2.592
Efficiency 34.69%
Gain
Result

9. Parameters Value(mm)
L (mm) 28.2022
W (mm) 36.7013
Lf (mm) 14.2636
Wf(mm) 2.7796
Fi (mm) 10.5556
Gpf(mm) 0.19507
h (mm) 1.6
Mt (mm) 0.1
Top view of Antenna
02) Bakelite []
Dimensions

10. Parameter Value
Dielectric constant 4.8
Area 1035.05mm2
Resonating frequency 2.4Ghz
Return loss, db -7.74
VSWR 2.39
Directivity, db 6.48
Gain, db 5.78
Efficiency 65.01%
S1 Parameter
Gain
Result

11. Parameters Value(mm)
Lp 38
Wpp(mm) 46
Lf (mm) 15.0
Wf(mm) 1.410
h (mm) 0.6
Dimension
Top view of Antenna
03) Taconic

12. Parameter Value
Dielectric constant 2.550
Area 3300mm2
Resonating frequency 2.4Ghz
Return loss, db -24.0024
VSWR 1.1347
Directivity, db 4.9383
Gain, db 4.1356
Efficiency 83.74 %
S1 Parameter
Gain
Result

13. Parameters Value(mm)
L (mm) 48.6
W (mm) 41.54
Lf (mm) 26.2
Wf(mm) 5
Fi (mm) 13.825
h (mm) 1.58
04) Rogers RT 5880
Dimension
Top view of Antenna

14. Parameter Value
Dielectric constant 2.2
Area 2018.844mm2
Resonating frequency 2.4Ghz
Return loss, db -31.9
VSWR 1.16
Directivity, db 7.6
Gain, db 7.2
Efficiency 90%
S1 Parameter
Gain
Result

15. Parameters Substrate materials
FR-4 epoxy Bakelite Taconic TLX 8 Rogers RT 5880
Dielectric constant 4.3 4.8 2.550 2.2
Area 10000mm2 1035.05mm2 3300 mm2 2018.844mm2
Resonating frequency 2.4Ghz 2.4Ghz 2.4Ghz 2.4Ghz
Return loss, db -20.405 -7.74 -24.00 24 -31.9
VSWR 1.211 2.39 1.1347 1.16
Directivity, db 7.471 6.48 4.9383 7.6
Gain, db 2.592 5.78 4.1356 7.2
Efficiency 34.69% 65.01% 83.74 % 90%
Value of different parameters of microstrip patch antenna for different dielectric materials at 2.4Ghz

16. Conclusion
 The performance of rectangular patch antennas on various substrates, including FR-4 epoxy, bakelite,
Taconic, and Rogers RT 5880, was studied for comparison purposes. A resonating frequency of
2.4Ghz was used as a common benchmark across all substrates.
 The gain values for the rectangular microstrip patch antenna were found to be 2.592 (FR-4 epoxy),
5.78 (Bakelite), 4.1356 (Taconic), and 7.2 (Rogers RT 5880). In terms of return loss results at this
same frequency, the values were -20.405 (FR-4 epoxy), -7.74 (Bakelite), -24.0024 (Taconic) and -
31.9 dB (Rogers RT 5880).
 Efficiency measurements showed that FR-4 epoxy had an efficiency rating of only 34.69%, while
Bakelite had a higher rating of 65.01%. Taconic rated even better with 83.74%efficiency, while
Rogers RT5880 achieved maximum efficiency ratings outpacing all other options at 90%.Upon
comparing each substrate's data set against one another it is clear that Rogers' duroid has
demonstrated notable qualities in several areas such as S11,gain,directivity,and efficiency measures
amongst others; making it ideal for many applications due to its versatility and superior performance
compared to other substrates tested within this study.