Analysis using FDTD of ultra-wideband dipole antennas

Author

Lule, E. ; Babij, T. ; Siwiak, K.

Author_Institution

Dept. of Electr. & Comput. Eng., Florida Int. Univ., Miami, FL, USA

Volume

1

fYear

2003

fDate

22-27 June 2003

Firstpage

838

Abstract

When a dipole antenna is excited by an ultra-wideband (UWB) pulse, the antenna rings at its resonant frequency, thus stretching out the waveform in time. The impedance characteristics of ultra-wideband dipole antennas are analyzed using the FDTD method. The results of the FDTD analysis of the antennas present a measured bandwidth suitable for ultra-wideband antenna use. Results for the Sierpinski diamond dipole antenna are similar to those obtained for the diamond dipole antenna (Schantz, H.G. and Fullerton, L., Proc. IEEE Antennas and Propag. Soc. Int. Symp., vol.4, p.100-3, 2001; Siwiak, K. et al., IEEE Radio and Wireless Conf. - RAWCON, 2001), with a very small improvement in bandwidth - approximately 110 MHz increase of usable bandwidth. The bow-tie dipole antenna, on the other hand, offers a much wider bandwidth compared to both the diamond dipole and Sierpinski diamond dipole antennas.

Keywords

broadband antennas; dipole antennas; electric impedance; finite difference time-domain analysis; fractals; FDTD analysis; Sierpinski diamond dipole; UWB pulse; bow-tie dipole; fractal antennas; impedance characteristics; resonant frequency; ultra-wideband dipole antennas; Antenna measurements; Bandwidth; Dipole antennas; FCC; Finite difference methods; Loss measurement; Resonant frequency; Time domain analysis; Ultra wideband antennas; Ultra wideband technology;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2003. IEEE

Conference_Location

Columbus, OH, USA

Print_ISBN

0-7803-7846-6

Type

conf

DOI

10.1109/APS.2003.1217591

Filename

1217591