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Progress In Electromagnetics Research B
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A COMPACT COPLANAR BROADBAND RECTANGULAR SLOT ANTENNA WITH E-SHAPED FEEDING STRUCTURE FOR GPR APPLICATIONS

By F. Sagnard

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Abstract:
A coplanar rectangular slot antenna operating in the very wide frequency band from 0.27 to 3.1 GHz (bandwidth over 166%) has been designed for GPR applications. The antenna, which is supposed to be positioned on the soil surface, appears particularly compact (34 x 29 cm2) and exhibits a low cross-polarization in the E-plane. 3D FDTD simulations have allowed to make a detailed parametric study associated with the antenna dimensional parameters in order to optimize the radiating performances. The slot antenna has also been studied with a shield to be further integrated in a bistatic subsurface radar positioned on the soil surface. Simulated results of the link in the presence of a homogeneous soil then including buried objects met in civil engineering structures are presented and discussed. First experimental results on a sandy soil have been compared to numerical ones.

Citation:
F. Sagnard, "A Compact Coplanar Broadband Rectangular Slot Antenna with E-Shaped Feeding Structure for GPR Applications," Progress In Electromagnetics Research B, Vol. 40, 241-260, 2012.
doi:10.2528/PIERB11092916

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