Abstract
The primary objective of this work is to investigate patch modifications and the impact of the dielectric constant on proposed antennas for super wide band (SWB) applications. The proposed design is printed on a dielectric material of Rogers RT/Duroid 5880 ™ (εr = 2.2, tanδ ≈ 0.0009 and thickness = 0.8 mm) with dimensions of 0.3 λo × 0.45 λo (where λo is operating wavelength at the lowest operating frequency). The proposed design operates in the frequency range of 7.44 to 138.26 GHz with an impedance bandwidth (IBW) of 130.82 GHz at S11 ≤ − 10 dB and provides the attractive properties of a fractional bandwidth (FBW) of 179.58 %, a bandwidth ratio (BR) of 18.59, a peak gain (G) of 8.75 dB, and a radiation efficiency of 92–97 %. The radiation properties exhibit appropriate omnidirectional characteristics across the frequency band. This SWB antenna achieves circular polarization properties at resonance frequencies of 48.50 GHz, 70.50 GHz, 78.50 GHz, and 113 GHz.The SWB antenna exhibits wide band performance over 7.44–138.26 GHz, including X – Ku – K – Ka – V – W – band applications with essential peak gains and radiation efficiencies.
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