Investigation on cellular-automata irregular-fractal ultrawideband slot-antennas

Lotfi Ladhar (1) , Mohamed Zarouan (1) , Donia Oueslati (1) , Jean Marie Floc'H (2) , Hatem Rmili (1)

1 King Abdulaziz University
2 IETR - Institut d'Électronique et des Technologies du numéRique

In this article, the effect of an irregular-fractal slot added to a radiating square patch of an ultrawideband (UWB) printed antenna is studied. The fractal complex-shaped slot was generated randomly by applying the Cellular-Automata technique. Analysis of both simulated and measured results dealing with the impedance matching, surface currents, gain, and radiation patterns shows three different behaviors: improvement, mismatching, or rejection of one or two bands, depending on the shape and position of the slot. It is found also that the gain of the UWB-antenna can be enhanced for some particular shaped slots. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2506–2514, 2015

Keywords: gain enhancement; cellular automata; band-rejection; slot-antenna; ultrawideband-antenna; irregular-fractal antennas

Domains: Engineering Sciences [physics]; Electronics; Computer Science [cs]; Networking and Internet Architecture [cs.NI]

Lotfi Ladhar, Mohamed Zarouan, Donia Oueslati, Jean Marie Floc'H, Hatem Rmili. Investigation on cellular-automata irregular-fractal ultrawideband slot-antennas. Microwave and Optical Technology Letters, 2015, 57 (11), pp.2506--2514. ⟨10.1002/mop.29367⟩. ⟨hal-01240764⟩