volume | PIER Journals

Abstract

A new circular ultra-wideband fractal monopole antenna based on descartes circle theorem (DCT) with elliptical iterations is presented. The proposed fractal design is optimized for return loss below -15 dB. The basic structure is slightly modified to ensure an overall smooth current distribution limited by the junction point nature of the fractal geometries. The measured return loss of the proposed design is below -15 dB within its impedance bandwidth along with omni-directional radiation pattern. Moreover due to the fractal shape, the proposed design has less weight and wind loading effect.

1. Honda, S., M. Ito, H. Sek, and Y. Jingo, "A disc monopole antenna with 1:8 impedance band width and omni directional radiation pattern," Proceedings of International Symposium on Antennas Propagation, 1145-1148, Sapporo, Japan,1992. Google Scholar

2. Khan, S. N., X. Jiog, H. Jun, and S. He, "A modified coplanar monopole antenna of circular disk with an ultra wide bandwidth from 2.28 to 38.2 GHz," Journal of Electromagnetic Waves and Applications, Vol. 22, 593-598, 2008.
doi:10.1163/156939308784150281 Google Scholar

3. Khan, S. N., L. Ti, H. Jun, and S. He, "A diamond like vertical monopole antenna for ultra wieband communication," Microwave and Optical Tech.L ett., Vol. 49, No. 10, 2443-2446, 2008.
doi:10.1002/mop.22745 Google Scholar

4. Ray, K. P., G. Kumar, and P. Anob, "Wideband circular wire mesh and annular ring monopole antennas," Microwave and Optical Tech. Lett., Vol. 48, No. 12, 2459-2461, 2006.
doi:10.1002/mop.21977 Google Scholar

5. Biswas, B. N., G. Rowdra, K. M. Rabindra, and D. R. Poddar, "Characterization of a self complementary Sierpinski gasker mixrostrip antenna," Progress In Electromagnetics Research Symposium, Vol. 2, No. 6, 698-701, 2006. Google Scholar

6. Huang, J. J., F. Q. Shan, and J. Z. She, "A novel multiband and broadband fractal patch antenna," Progress In Electromagnetics Research Symposium, Vol. 57–59, Cambridge, USA, March 26-29.2006. Google Scholar

7. Song, C. T. P., P. S. Hall, G. Shiraz, and K.Wake, "Fractal stacked monopole with very wide bandwidth," Electronics Lett., Vol. 35, No. 12, 945-946, 1999.
doi:10.1049/el:19990634 Google Scholar

8. Biswas, B. N., G. Rowdra, K. M. Rabindra, and D. R. Poddar, "Characterization of a self complementary sierpinski gasker mixrostrip antenna," Progress In Electromagnetic Research Symposium, Vol. 2, No. 6, 698-701, 2006. Google Scholar

9. Arrighetti, W., P. Cupis, and G. De Gerosa, "Electromagnetic radiation from moving fractal sources: A plane wave spectral approach," Progress In Electromagnetics Research, Vol. 58, 1-19, 2006.
doi:10.2528/PIER05072001 Google Scholar

10. Taniguchi, T. and T. Kobayashi, "An omnidirectional and low-VSWR antenna for the FCC-approved UWB frequency band," Antennas and Propagation Society International Symposium, Vol. 3, 460-463, 2003. Google Scholar

11. Oppermann, I., M. Hamalainen, and J. Iinatti, UWB Theory and Applications, Chapter 6, John Wiley and Sons, 2004.

12. Pattnaik, A. and R. K. Mishra, "Some observations about sierpinski fractal patch antenna," Proceedings of the XXVIIIth URSI General Assembly in New Delhi, October 2005. Google Scholar

13. Lagarias, J. C., C. L. Mallows, and A. Wilks, "Beyond the Descartes circle theorem," Amer.Math., Vol. 109, 338-361, 2002.
doi:10.2307/2695498 Google Scholar

14. Liu, J. C., D. C. Chang, D. Soong, C. H. Chen, C. Y. Wu, and K. Yao, "Circular fractal antenna approaches with descartes circle theorem for multiband/wideband applications," Microwave and Optical Tech.L ett., Vol. 44, No. 5, 404-408, March 2005.
doi:10.1002/mop.20649 Google Scholar

Dr. Salman Khan

Dr. Jun Hu

Dr. Jiang Xiong

Prof. Sailing He