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Ultra‐wideband antenna using Minkowski‐like fractal geometry
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.28571
Subject(s) - fractal antenna , monopole antenna , omnidirectional antenna , optics , ground plane , radiation pattern , wideband , dipole antenna , acoustics , minkowski space , physics , geometry , antenna (radio) , helical antenna , coaxial antenna , engineering , electrical engineering , mathematics
In this letter, a Minkowski‐like fractal geometry‐based ultra‐wideband (UWB) monopole antenna is proposed and investigated. The radiator of the antenna is designed using similar segments of the Minkowski‐like structure. The multiple resonance phenomena of fractal geometry are utilized in the proposed structure to obtain the wideband operability by repetition of similar segments in the radiator structure of the antenna. The self‐similar nature of this geometry provides higher effective antenna length and wide operating bandwidth. The multiple slots are introduced in the ground plane to improve the reflection coefficient over the entire UWB frequency range. The proposed antenna has an optimized dimension of 23.5 × 26.5 mm 2 and shows the operating bandwidth from 1.4 to 10.4 GHz. The proposed design is fabricated, and its measured result shows good agreement with the simulated one. The proposed antenna exhibits nearly omnidirectional radiation pattern, proper impedance matching over the entire UWB frequency range. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2273–2279, 2014