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Electromagnetic band-gap (EBG) antennas are ideal for handheld sensing applications, such as ground-penetrating radar (GPR) for landmine detection, because of their small size, efficiency, and directivity. Increased detection performance has been shown when a GPR is combined with a metal detector, but a typical EBG antenna would preclude the sensors from being colocated because of the large amount...
A planar near-field/far-field transformer (NFFFT) is used to compute the radiated field of an antenna under test from near-field planar measurements. The first step in taking an NFFFT is to calculate the plane-wave spectrum (PWS) by Fourier transforming the measurements. The integration used in this step is almost always done numerically with a windowed fast-Fourier transform (WFFT). Certain assumptions...
In this paper, a technique is developed to model ground penetrating radar interactions. It combines reciprocity with the results from a full numerical model and allows one to compute a large number of scattering responses simultaneously, provided the scatterers are small. The results of an example calculation are shown and compared with a full numerical model and a possible application is demonstrated.
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