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Investigation on cellular‐automata irregular‐fractal ultrawideband slot‐antennas
Author(s) -
Ladhar Lotfi,
Zarouan Mohamed,
Oueslati Donia,
Floch JeanMarie,
Rmili Hatem
Publication year - 2015
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.29367
Subject(s) - fractal , fractal antenna , antenna (radio) , slot antenna , microwave , radiation pattern , position (finance) , impedance matching , acoustics , square (algebra) , matching (statistics) , physics , electrical impedance , optics , computer science , topology (electrical circuits) , electronic engineering , mathematics , telecommunications , geometry , mathematical analysis , engineering , electrical engineering , antenna efficiency , economics , statistics , finance
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