1. Mehdipour, A., K. M. Aghdam, and R. Faraji-Dana, "Complete dispersion analysis of Vivaldi antenna for ultra wideband applications," Progress In Electromagnetics Research, Vol. 77, 85-96, 2007.
2. Lin, S., S. Yang, and A. E. Fathy, "Development of a novel UWB vivaldi antenna array using SIW Technology," Progress In Electromagnetics Research, Vol. 90, 369-384, 2009.
3. Greenberg, M. C., K. L. Virga, and C. L. Hammond, "Performance characteristic of the dual exponentially tapered slot antenna (DETSA) for wireless communications applications," IEEE Trans. Veh. Technol., Vol. 42, No. 2, 30-312, 2003.
4. Nikolaou, S., L. Marcaccioli, G. E. Ponchak, J. Papapolymerou, and M. M. Tentzeris, "Conformal double exponentially tapered slot antennas (DETSA) for UWB communication systems' front ends," IEEE-ICU Int. Conf. Ultrawideband Technol., 2005.
5. Abbosh, A. M., H. K. Kan, and M. E. Bialkowski, "Design of compact directive ultra wideband antipodal antenna," Microwave and Opt. Tech. Lett., Vol. 84, No. 12, 2006.
6. Hood, A. Z., T. Karacolak, and E. Topsakal, "A small antipodal vivaldi antenna for ultrawide-band applications," IEEE Antennas and Wireless Propagat. Lett., Vol. 7, 656-660, 2008.
7. Yu, W. and R. Mittra, "Accurate modeling of planar microwave circuit using conformal FDTD algorithm," Electronics Lett., Vol. 36, 618-619, 2000.
8. Hu, W. J. and D. B. Ge, "Study on conformal FDTD for electromagnetic scattering by targets with thin coating," Progress In Electromagnetics Research, Vol. 79, 305-319, 2008.
9. Jin, N. and Y. Rahmat-Samii, "Parallel particle swarm optimization and finite-difference time-domain (PSO/FDTD) algorithm for multiband and wide-band patch antenna design," IEEE Trans. Antenna and Propagat., Vol. 53, No. 11, 3459-3468, 2005.
10. Semnani, A. and M. K. Hesari, "An enhanced method for inverse scattering problems using fourier series expansion in conjunction with FDTD and PSO," Progress In Electromagnetics Research, Vol. 76, 45-64, 2007.
11. Wang, W. T., S. X. Gong, Y. J. Zhang, F. T. Zha, and J. Ling, "Low RCS dipole array synthesis based on MOM-PSO hybrid algorithm," Progress In Electromagnetics Research, Vol. 94, 119-132, 2009.
12. Edwards, T. C. and M. B. Steer, Foundation of Interconnected and Microstrip Design, 3rd Ed., John Wiley & Sons, 2000.
13. Roden, J. A. and S. D. Gedney, "Convolutional PML (CPML): An efficient FDTD implementation of the CSF-PML for arbitrary media," Microwave Opt. Tech. Lett., Vol. 27, No. 5, 334-339, 2000.
14. Zhang, Y. P., "Finite-difference time-domain analysis of integrated ceramic ball grid array package antenna for highly integrated wireless transceivers," IEEE Trans. Antenna and Propagat., Vol. 52, No. 2, 43-442, 2004.
15. Xu, S. and Y. Rahmat-Samii, "Boundary condition in particle swarm optimization revisited," IEEE Trans. Antenna and Propagat., Vol. 55, No. 3, 760-765, 2007.