1. Geran, F., G. Dadashzadeh, M. Faris, N. Hojjat, and A. Ahmadi, "Rectangular slot with a novel triangle ring microstrip feed for UWB applications," Journal of Electromagnetic Waves and Applications, Vol. 21, No. 3, 387-396, 2007.
doi:10.1163/156939307779367341        Google Scholar

2. Sadat, S., M. Fardis, F. G. Kharakhili, and G. Dadashzadeh, "A compact microstrip square-ring slot antenna for UWB applications," Progress In Electromagnetics Research, Vol. 67, 173-179, 2007.
doi:10.2528/PIER06082901        Google Scholar

3. Sayem, A. M. and M. Ali, "Characteristics of a microstrip-FED miniature printed Hilbert slot antenna," Progress In Electromagnetics Research, Vol. 56, 1-18, 2006.
doi:10.2528/PIER05041801        Google Scholar

4. Lewis, L. R., M. Fassett, and J. Hunt, "A broadband stripline array element," Dig. 1974 IEEE Antennas Propagat. Symp., 335-337, Atlanta, GA, 1974.

5. Gibson, P. J., "The Vivaldi aerial," Proc. 9th European Microwave Conference, 103-105, 1979.

6. Gazit, E., "Improved design of the Vivaldi antenna," IEEE Proceedings, Vol. 135, Pt. H, No. 2, April 1988.        Google Scholar

7. Langley, J. D. S., P. S. Hall, and P. Newham, "Novel ultrawide-bandwidth Vivaldi antenna with low crosspolarisation," Electronics Letters, Vol. 29, No. 23, November 11 1993.
doi:10.1049/el:19931336        Google Scholar

8. Mehdipour, A., K. Mohammadpour-Aghdam, and R. Faraji-Dana, "Complete dispersion analysis of Vivaldi antenna for ultra wideband applications," Progress In Electromagnetics Research, Vol. 77, 85-96, 2007.
doi:10.2528/PIER07072904        Google Scholar

9. Yin, X., Z. Su, W. Hong, and T. J. Cui, An ultra wideband tapered slot antenna, Center for Computational Electromagnetics and State Key Laboratory of Millimeter Waves, Department of Radio Engineering, Southeast University, Nanjing 210096, 2005.

10. Yoon, I. J., H. Kim, H. K. Yoon, Y. J. Yoon, and Y.-H. Kim, "Ultra-wideband tapered slot antenna with band cutoff characteristic," Electronics Letters, Vol. 41, No. 11, May 26 2005.
doi:10.1049/el:20050876        Google Scholar

11. Joardar, S. and A. B. Bhattacharya, "Two new ultra wideband dual polarized antenna-feeds using planar log periodic antenna and innovative frequency independent reflector," Journal of Electromagnetic Waves and Applications, Vol. 20, No. 11, 1465-1479, 2006.
doi:10.1163/156939306779274318        Google Scholar

12. Schaubert and Shin, "A parameter study of stripline-fed Vivaldi notch-antenna arrays," IEEE Trans. on Antennas and Propagation, Vol. 47, No. 5, 879-886, May 1999.
doi:10.1109/8.774151        Google Scholar

13. Yngvesson, et al. "The tapered slot antenna — A new integrated element for millimeter-wave applications," IEEE Transactions on Microwave Theory and Techniques, Vol. 37, No. 2, 365-374, February 1989.
doi:10.1109/22.20062        Google Scholar

14. Gupta, K. C., R. Garg, and I. J. Bahl, Microstrip Lines and Slotlines, Artech House, 1979.

15. Cedn, T. B., Y. L. Dong, Y. C. Jiao, and F. S. Zhang, "Synthesis of circular antenna array using crossed particle swarm optimization," Journal of Electromagnetic Waves and Applications, Vol. 20, No. 13, 1785-1795, 2006.
doi:10.1163/156939306779292273        Google Scholar

16. Lim, T. S., V. C. Koo, H. T. Ewe, and H. T. Chuah, "High-frequency phase error reduction in SAR using particle swarm of optimization algorithm," Journal of Electromagnetic Waves and Applications, Vol. 21, No. 6, 795-810, 2007.
doi:10.1163/156939307780749110        Google Scholar

17. Mitlineos, S. A., S. C. A. Thomopolous, and C. N. Capsalis, "Genetic design of dual-band, switched-beam dipole arrays, with elements failure correction, retaining constant excitation coefficients," Journal of Electromagnetic Waves and Applicaitons, Vol. 20, No. 14, 1925-1942, 2007.
doi:10.1163/156939306779322738        Google Scholar

18. Rajarman, R., P. Gogineni, G. Prescott, and P. Kanagaratnam, Design of a wideband vivladi antenna array for the snow radar, B.E. (Electronic & Communication Engg.), Coimbator Inst. of Tech., India 2001, February 2 2004.