Near-field focusing technique for enhanced through-the-wall radar

The adoption of a Bessel beam source is proposed in this work as localized near-field antenna for through-the-wall radar applications. The basic idea is to exploit all appealing features of Bessel beams, in terms of ideally infinite propagation depth, narrow beam pattern and field invariance on the transverse plane, to enhance both the resolution as well as the robustness towards clutter effects of new generation through-the-wall systems.