IJIRST –International Journal for Innovative Research in Science & Technology| Volume 3 | Issue 12 | May 2017 ISSN (online): 2349-6010
Design of 12 Sided Polygon Patch Microstrip Antenna for 2.4 GHz Ms. Pradnya A. Kamat PG Student Department of Electronics & Telecommunication Engineering Goa College of Engineering, Farmagudi - Goa
Ms. Samiksha S. Mandurkar PG Student Department of Electronics & Telecommunication Engineering Goa College of Engineering, Farmagudi - Goa
Mr. Lavesh N. Velip PG Student Department of Electronics & Telecommunication Engineering Goa College of Engineering, Farmagudi - Goa
Mr. Yeshudas Muttu Assistant Professor Department of Electronics & Telecommunication Engineering Goa College of Engineering, Farmagudi - Goa
Abstract An antenna plays a major role in the field of communication engineering. In this paper we have designed a 12 sided polygon shaped patch Microstrip antenna and simulation has been done using IE3D simulator software version 14.0. The designed antenna has following dimentions: 32.5mm×39mm (Ground plane), 26mm×26mm (patch), and substrate thickness of 1.6mm and FR4 material is used as dielectric having relative permittivity of 4.2 and loss tangent of 0.0013 at a frequency of 2.4GHz. The different parameters of the designed antenna such as VSWR, return loss, gain, efficiency, axial ratio etc. have been studied. Keywords: Polygon patch, Microstrip antenna, IE3D, 2.4 GHz _______________________________________________________________________________________________________ I.
INTRODUCTION
In telecommunication engineering, a microstrip antenna usually means an antenna fabricated using microstrip techniques on a printed circuit board (PCB). They are mostly used at microwave frequencies. A microstrip antenna is made up of a patch of metal foil of various shapes (a patch antenna) on the surface of a PCB, with a metal foil ground plane on the other side of the board. The antenna is usually connected to the transmitter or receiver through foil microstrip transmission lines. The radio frequency current is between the antenna and ground plane. Microstrip antennas have become very popular in recent decades due to their thin planar profile which can be incorporated into the surfaces of consumer products, aircraft and missiles; their easy fabrication using printed circuit techniques; the ease of integrating the antenna on the same board with the rest of the circuit, and the possibility of adding active devices such as microwave integrated circuits to the antenna itself to make active antennas. We have designed this antenna at 2.4 GHz because our routers, cordless phones, Bluetooth earpiece, baby monitors all operate at 2.4GHz radio frequency. 2.4-GHz system will have a longer range (if unobstructed) and generally requires a smaller antenna, which keeps the phone’s size in check. II. ANTENNA DESIGN METHODOLOGY This antenna is designed on the simulator tool IE3D version 14.0. Dimensions of this antenna are Ground plane = (32.5×39) mm, patch size =(26×26) mm, substrate thickness= 1.6mm and FR4 (dielectric constant=4.2, loss tangent = 0.0013) is used as dielectric material.
Fig. 1: The dimensions of the designed antenna
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Design of 12 Sided Polygon Patch Microstrip Antenna for 2.4 GHz (IJIRST/ Volume 3 / Issue 12/ 019)
Steps involved 1) Open a new file in Mgrid. 2) Select meshing frequency=3GHz. 3) Add anew substrate layer. 4) Under the substrate layer set the following parameters
5) 6) 7) 8) 9)
Ztop = 1.6 Îľpsr = 4.2 Design the micro strip patch with the derived parameters. Define the port. Mesh the structure at 3GHz Simulate the design and observe the output Optimize if necessary. III. MATH
h – height of the substrate = 1.6mm fr- frequency at which the antenna is designed =2.4GHz er- dielectric constant== 4.2 a-Radius of the patch = 13.8237mm IV. RESULTS AND DISCUSSION
Fig. 2: The layout of Antenna in IE3D
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Design of 12 Sided Polygon Patch Microstrip Antenna for 2.4 GHz (IJIRST/ Volume 3 / Issue 12/ 019)
Fig. 3: S- parameter v/s frequency graph
Various parameter of the proposed antenna such as: return loss, VSWR, efficiency, gain and axial ratio are shown below. Return loss= -45.7dB VSWR=1.05 Radiation efficiency= 100% Antenna efficiency=99.998% Gain=3.19 dBi Directivity=3.19dBi Axial ratio=3.06dB
Fig. 4: VSWR v/s frequency graph
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Design of 12 Sided Polygon Patch Microstrip Antenna for 2.4 GHz (IJIRST/ Volume 3 / Issue 12/ 019)
V. CONCLUSION In this paper we have designed and studied the performance of 12 sided polygon patch Microstrip antenna at 2.4 GHz using IE3D software, Design and simulation tool (version 14.0). REFERENCES [1] [2] [3] [4] [5]
J. C. A. Balanis, „„Antenna Theory, Analysis and Design”, 3rd edition, John Wiley & Sons, Inc. PP 843-865, 2005. D.G.Fang, “Antenna Theory and Microstrip Antenna” V. P. Sarin, V. Deepu, C. K. Anandan, P. Mahanan and K Vasudevan, “Wideband Printed Microstrip Antenna for Wireless Communication” IEEE Trans. AP-48(2000)777-783. R. Garg, P. Bhartia, I. Bhal and A. ittipiboon, “Microstrip Antenna Design Handbook” London: Artech House, 2001. Amit Kumar Gupta, R. K. Prasad, Dr. D. K. Srivastava, “Design and Development of Dual E- Shaped Microstrip Antenna for Bandwidth and Gain Enhancement” IJECET, ISSN0976-6464 volume 3, Issue oct-dec2012.
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