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Title: Highly nonlinear square lattice photonic crystal fiber with negative dispersion
Authors: Md. Moinul Islam, Mohammad Tariqul Islam, Mohammad Rashed Iqbal Faruque
Journal: ARPN Journal of Engineering and Applied Sciences
Publisher: Khyber Medical College, Peshawar
Country: Pakistan
Year: 2013
Volume: 8
Issue: 9
Language: English
An X-band microstrip antenna for bandwidth enhancement is presented in this paper. The proposed antenna is comprised of circular and rectangular slots fed by a 50 Ω microstrip line. It is designed on 40 mm×40 mm printed circuit board using FR4 substrate material. Commercially available high frequency electromagnetic solver HFSS based on the finite element method (FEM) is taken into account in this study. The impedance bandwidth (VSWR≤2) of the proposed antenna is 2.10 GHz (9.75 to 11.85 GHz). 1.85 GHz is the average gain where maximum gain is 2.3 GHz. The antenna exhibits stable Omni-directional and bidirectional radiation patterns.
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