Patch antennas with superstrates for landmine detection

Abstract

In this paper, a new technique for anti-personnel landmine detection is proposed. A high gain single microstrip antenna is used to detect the presence of a standard landmine buried in dry sand. A superstrate layer made of Ab03 ceramic is used to increase the antenna gain and consequently increase the detection sensitivity. The change in the phase of the antenna's reflection coefficient (Su) is used as an evident of the landmine existence. A phase difference of 106.42 degrees was observed using the proposed detection system. The system is analyzed using ANSYS HFSS.

Ultra-Wide Band Double-Slot Podal and Antipodal Vivaldi Antennas Feed by Compact Out-Of-Phase Power Divider Slot for Fluid Properties Determination

“…Due to certain advantages such as low profile, compactness, cheap costs in system development, planar configuration, and ease of integration [1][2][3][4] over conventional measurement techniques such as using waveguide sample cells [5,6], resonant cavities or coaxial probes [7][8][9], magnetic material [10,11], horn antennas [12], a microstrip antenna have been considered as potential alternatives for detecting and monitoring the physical property and permittivity analysis of the material. Similarly, microstrip antennas have also been studied as a potential option for landmine detection [13], through-wall imaging [14], biomedical imaging [15], breathing, heart rate detection [16], motion and gesture detection [17], and two-dimensional (2D) imaging of concrete blocks [18]. Depending on the physical and dielectrics properties of the material, microwave sensing techniques have a wide range of industrial applications, such as identifying or monitoring material permittivity, density distribution, temperature, moisture content, and compositional proportions in materials [18][19][20][21][22][23][24].…”