International Journal of Advances in Engineering & Technology, May 2011. ©IJAET


ISSN: 2231-1963


5.0 CONCLUSION


Figure11: Radiation Pattern of the Antenna


The gap coupled annular ring microstrip antenna is designed and various parameters like input impedance, VSWR, return loss and radiation pattern are calculated using CST software. The proposed antenna exhibits dual frequency bands (return loss less than -10db) with impedance bandwidth of 4.8% for lower band (5.07-5.32 GHz) and 2.13% for higher band (6.05-6.18 GHz).


REFERENCES


[1]. W. C. Chew, “A broad band annular ring microstrip antenna”, IEEE Trans. On antenna and propagation, vol. AP-30, no.5, pp 918-922, sept. 1982


[2]. I.J. Bahl, S. S. Stuchly and M. A. Stuchly, “A new microstrip radiator for medical applications”, IEEE Trans. Microwave theory Tech., vol. MTT.-28, pp. 1464-1468, 1980


[3]. J. W. Mink, “Circular ring microstrip antenna elements”, presented in 1980 Antennas propagat. Soc. Int. Symp. , Quebec, Canada, June 1980.


[4]. S. Ali, W. C. Chew and J. A. Kong, “Vector Hankel transform analysis of annular ring microstrip antenna”, IEEE Trans. Antennas propagat., vol. A.P. 30, no. 4, pp.637-644, july1982.


[5]. Bhartia P and Bahal I J, Frequency agile microstrip antennas, Microwave J 25, , pp. 67- 70,1982. [6]. B. K.Kanaujia and B. R. Vishvakarma “Analysis of Gunn integrated annular ring microstrip antenna, IEEE trans Antenna Propag. 52(1) , , pp.88-97, 2004.


[7]. A K Gautam and B R Vishvakarma, Frequency agile microstrip antenna symmetrically loaded with Tunnel diodes, Microwave Opt technol Lett 48, ,pp. 1807-1810,2006.


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[9]. M K Meshram and B R Vishvakarma, Gap coupled microstrip antenna for wide-band operation, Int J Electronics, pp. 1161-1175,2001.


[10]. Ramesh Garg, “Design equations for coupled microstrip lines”, Int. Electronics, vol. 47, no. 6, pp. 587-591, 1979


[11]. C. K. Aanandan, P. Mohanan and K.G. Nair, “Broad band gap coupled microstrip antenna”, IEEE Trans. On antenna and propagation, vol.38, no.10, pp.1581-1585, Oct.1990.


[12]. A.K. Bhattacharya and Ramesh Garg, “A Microstrip Array of concentric Annular rings”, IEEE Trans. on antenna and propagation, vol. A.P.33.no.6, June 1985.


Author biography Shuchita Saxena received the Bachelor of Technology degree in Electronics and Communication engineering from Moradabad Institute of Technology, Moradabad in 2004.Currently seeking the opportunity for doing M. Tech in Microwave Engineering from Uttar Pradesh Technical University, Lucknow. Her main research interest is in analysis of microstrip antennas. Dr. Binod Kumar Kanaujia received Degree in Electronics Engineering from KNIT, Sultanpur in 1994, M.Tech. in Microwave Engineering in 1998 from BHU. He Completed PhD in Microwave Engineering in 2004 from BHU. His teaching and research interests are in the areas of MIC, EMT. He is working as Associate Professor in AIT, Delhi.


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