Optmized patch-like antennas for through the wall radar imaging and preliminary results with frequency modulated interrupted continuous wave

This paper presents optimized patch-like antennas for Through The Wall Imaging (TTWI) radar applications in the frequency range 0.5-2 GHz, and preliminary results using Frequency Modulated Interrupted Continuous Waveform (FMICW). Results of numerical simulations using basic models of the antenna are presented. The antenna optimization was aimed at making the radiation pattern more directional by focusing the energy in a single lobe to be directed towards the wall and the targets to be detected. The optimized antenna was manufactured and its measured parameters are compared with the simulated results which show good agreement. Some preliminary results from the FMICW radar system using this antenna are presented.