Measurement of high-power ultra wideband signal penetration through different types of walls

Abstract

This paper presents the experimental results of transmission of ultra-wideband, high-power microwave signals through different types of walls which are used for structural systems in exterior construction. The study focuses on different real configurations: four walls (autoclaved cellular concrete, traditional concrete block, reinforced concrete and hollow brick) have been built outdoors to measure their transmission coefficients. A sub-nanosecond pulse generator has been used, allowing measurements over a frequency band from 100 MHz to 6 GHz. Further investigations have been carried out on the tested structures through numerical simulation, in order to compare the measurement results of walls made of complex elements and those of numerical models of the walls based on material permittivity parameters. The influence of moisture for different types of walls has also been quantified.

Keywords:

• UWB
• HPM
• through-the-wall
• concrete
• brick
• autoclaved cellular concrete
• electromagnetic wave transmission