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In this paper, a comprehensive analysis of a novel GPR antenna featuring almost 30 : 1 relative bandwidth (55 MHz - >1.5GHz), with a maximum antenna size of 40 cm is performed. The antenna transient behavior, near-field radiation properties, and the impact of the ground are analyzed in details. It has been shown that the antenna exhibits reduced and short ringing, low spurious energy emission in...
We present the design and full-wave analysis of conformal butterfly antennas for Ultra-Wideband (UWB) Radio Direction Finders (RDFs). The impact of the conformal deformation on the antenna performance is evaluated, a suitable antenna cover is designed, and single antenna elements for a RDF covering the band from 250MHz to 3.5GHz are optimized. Impact of coupling between antenna elements is evaluated,...
In this paper, a cavity-backed bow-tie antenna for ground-penetrating radar is presented. Dielectric embedding and resistive loading of the radiating structure are employed to achieve a 10 :1 relative bandwidth (from 100 MHz to 1 GHz), with a maximum antenna size of 52 cm, and stable performance over different types of the ground. The full-wave analysis of the developed antenna is performed by means...
In this paper, the design and full-wave analysis of cavity-backed circular-end bow-tie antennas for ground-penetrating radar applications are presented. A suitable resistive loading of the radiating structure is employed to achieve an ultra-wideband behaviour and, at the same time, to meet the occupation volume requirements of modern subsurface radars. The optimal loading distribution is determined...
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