Design of a new wire bow-tie antenna for ultrawide-band GPR applications using multi-objective genetic algorithm

Faraji, Hannaneh; Moini, R.; Sadeghi, S.H.H.; Talebi, Heidar Ali

doi:10.1109/antemursi.2009.4805110

Cited by 3 publications

(1 citation statement)

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“…The prerequisite for microwave measurement is that the antenna must have relatively small size, a directive radiation pattern, high gain and wide fractional bandwidth. It is obvious that the Bow-tie antenna sensor can meet those requirements [ 14 , 17 , 18 ]. Based on the References [ 19 , 20 ], the Bow-tie antenna is a two-dimensional form of finite biconical antennas.…”

Section: Methodsmentioning

confidence: 99%

An Improved Modified Universal Ultra-Wideband Antenna Designed for Step Frequency Continuous Wave Ground Penetrating Radar System

Shen

Yuan

et al. 2019

Sensors

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Step Frequency Continuous Wave Ground Penetrating Radar (SFCW-GPR), as a tool for nondestructive testing of shallow soil surface targets, the realization of the function of SFCW-GPR is mainly based on the theory of refraction, reflection and scattering of electromagnetic wave in the discontinuity of dielectric constant. So, the UWB antenna system, an important part of SFCW-GPR, becomes more indispensable. In this paper, an improved modified universal antenna is designed, simulated and fabricated. Based on a typical Bow-tie antenna, it is modified by the methods of lumped loads, cavity-backed loading and structure loading. The simulated and measured results show that the UWB antenna has 1.36 GHz bandwidth from 0.64 to 2.0 GHz with three resonant wavelength peaks, and having been modified and improved, the UWB antenna performances including voltage standing-wave ratio (VSWR), input impedance, the boresight gain and current distribution, are much better than the typical Bow-tie antenna. In addition, the results of verification experiment of Step Frequency Continuous Wave (SFCW) show that the antenna can be applied to the working scenarios of SFCW-GPR.

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Section: Methodsmentioning

confidence: 99%