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International Journal of Advanced Technology & Engineering Research (IJATER)IV. Simulation ResultsIn this paper, Rectangular microstrip patch antenna usingsplit rectangular shape of metamaterial for bandwidthimprovement at 1.881 GHz is simulated using CST-MWSsoftware. The proposed design in comparison to RMPAalone, found that the potential parameters of the proposedantenna is increased. This is clear from Fig.2 & Fig.11 thatthe return loss is reduced from -10.068 dB to -18.175 dB,and bandwidth is increased from 4.9 MHz to 22.5 MHz.From the Fig.12, it is clear that the Directivity of proposedantenna design is almost unaffected. The maximum powerdeliver to proposed rectangular microstrip patch antennais above 0.95 watt.V. ConclusionFigure 15. Smith chart of simple Rectangular microstrip patchantenna.The bandwidth of the proposed microstrip patchantenna is increased by using meta material and thereturn loss is reduced at operating frequency anddirectivity is unaffected. Due to this, Rectangularmicrostrip patch antenna using SPLIT RECTANGU-LAR SHAPE of metamaterial for bandwidth improvement.By using Metamaterial, the maximumpower delivered to proposed antenna is 1 watt as comparedto the RMPA delivered power above the 0.95watt.VI. AcknowledgementFigure 16. Smith chart of simple Rectangular microstrip patchantenna.The smith chart is very useful when solving transmissionproblems. The real utility of the Smith chart, it can be usedto convert from reflection coefficients to normalizedimpedances (or admittances), and vice versa.Smith chart of RMPA using split rectangular shape forbandwidth improvement at 1.881 GHz. Above Fig. showsthe impedance variation in the simulated frequency rangeand received impedance matching for proposed antenna atcharacteristic impedance.The authors wish to thank their parents for their constantmotivation without which this work would have never beencompleted. The authors are grateful to the Dr. Sanjeev JainDirector MITS Gwalior for providing us lab facilities tocomplete this project work. We also express our gratitudetowards Dr. P K Singhal HOD Dept. of Elex MITS and Dr.Sarita S Bhadoria Professor Dept. of Elex, MITS for theircontinued support and guidance. Finally we thank ourfriends Mr. Harshal Mishra and Mr. Mohan Choudhary fortheir moral support and help during this project.VII. References[1] Douglas, H. W., R. L. Haupt, and P. L. Werner,Fractal antenna engineering: The theory and design offractal antenna arrays," IEEE Antennas andPropagation Magazine, Vol. 41, No. 5, 37-59, 1999.[2] H.A. Jang, D.O. Kim , and C. Y. Kim “ SizeReduction of Patch Antenna Array Using CSRRsLoaded Ground Plane”Progress In ElectromagneticsISSN No: 2250-3536 Volume 2, Issue 5, Sept 2012 77
International Journal of Advanced Technology & Engineering Research (IJATER)Research Symposium Proceedings, KL MALAYSIA,March 27-30, 2012 1487.[3] Veselago, V. G., The electrodynamics of substances,with simultaneously negative values of ɛ and µ"Soviet Physics Uspekhi , Vol. 10, No. 4 , 509-514,1968.[4] R.W. Ziolkowski, “Design fabricating and fabricationand testing of double negative metamaterials ,” IEEETransactions on antennas and Propagation, vol.51,no.7, pp.1516-1529, July 2005.[5] Kuo, Y. L. and K. L. Wong, Printed double- Tmonopole antenna for 2.4/5.2 GHz dual-band WLANoperations," IEEE Trans. Antennas Propag., Vol. 51,No. 9, 2187-2192.[6] Dr. Rekha Gupta, Bhim Singh, Neelima ChoudharySapana Yadav “Rectangular microstrip patch antennaloaded with Symmetrically cut H and Hexagonalshaped Metamaterial structure for bandwidth improvementat 1.794 GHz”, International Journal ofAdvanced Technology & Engineering Re-search(IJATER), ISSN No: 2250-3536 , Volume 2, Issue 5,Sept 2012.[7] Constantine A. Balanis, Antenna Theory and Design,John Wiley & Sons, Inc., 1997.NEELIMA CHOUDHARY received the B.E degree inInformation and Technology from R.G.P.V Bhopal M.P. in2009. Currently she is pursuing M.Tech in CommunicationControl and Networking from MITS Gwalior, Bhopal,(M.P). Her research interest includes Antenna andMicrowave communication and their applications.Neelima choudhary can be reached atnisha_mits29@rediff.comBHIM SINGH received the B.Tech degree in Electronicsand Communication from Bundelkhand University JhansiUtter Pradesh in 2009. At present he is pursuing M.Tech inCommunication, Control and Networking from MITSGwalior, Bhopal, (M.P). His research interest includesAntenna and Micro wave communication and theirapplications. Bhim Singh may be reached atsinghbhim16@gmail.com[8] .L. Stutzman, G.A. Thiele, Antenna Theory anddesign , John Wiley & Sons 2nd Ed., New York,1998.[9] J. S. Colburn and Y. Rahmat-Samii, “Patch antennason externally perforated high dielectric constantSubstrates IEEE Trans. Antennas Propag.,, vol. 47,no. 12, pp 1785–1794, 1999.BiographiesDR. REKHA GUPTA is currently associated with MITS,Gwalior as a Senior Faculty of Electronics andCommunication Department. She has done Ph.D in wirelesscommunication from R.G.P.V. Her research interestsinclude Antenna and Microwave communication, wirelesscommunication and their applications. Dr.Rekha Guptamay be reached at rekha652003@yahoo.comSAPANA YADAV received the B.E degree in Electronicsand communication from RGPV, Bhopal M.P in 2009.Currently she is pursuing M.Tech in Communication,Control and Networking from MITS Gwalior, Bhopal,(M.P).Her research interest includes Antenna and Microwavecommunication and their applications. Sapana Yadav maybe reached at sapanayadav12@gmail.comISSN No: 2250-3536 Volume 2, Issue 5, Sept 2012 78
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