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A multinotched octagonal shaped fractal UWB antenna
Author(s) -
Tripathi Shrivishal,
Mohan Akhilesh,
Yadav Sandeep
Publication year - 2014
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.28629
Subject(s) - fractal antenna , omnidirectional antenna , radiation pattern , return loss , fractal , ground plane , standing wave ratio , wideband , microwave , optics , antenna (radio) , operability , acoustics , bandwidth (computing) , coaxial antenna , physics , microstrip antenna , engineering , electrical engineering , telecommunications , mathematics , mathematical analysis , reliability engineering
In this article, a simple design approach for small ultrawideband (UWB) antenna is presented. The small size and wideband operability is obtained by introducing Minkowski like fractal geometry in the design. It is observed that addition of fractal elements at the edges of octagonal shape leads to wideband phenomena. Furthermore, the insertion of multiple notches in the ground plane improves return loss characteristic in the desired UWB operational bandwidth of 3.1–10.6 GHz. The compact 16.5 × 13.5 mm 2 antenna geometry size exhibits nearly omnidirectional radiation pattern, with VSWR < 2 over the entire UWB frequency range. The optimized antenna is fabricated and measured using vector network analyzer. The measured characteristics are in good agreement with the simulated one. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2469–2473, 2014