PPPS-2013: Abstract: Analysis of half TEM horn antenna for high power UWB system

Ultra Wideband (UWB) system has many applications such as target object detection, transient radar, mine clearing, detection of crack on underground pipeline, water purification, electronic effects testing, and jamming. This system consists of Marx generator, peaking capacitor, peaking switch and radiating element (antenna). The complete transient analysis of half transverse electromagnetic (HTEM) horn antenna integrated to the peaking stage is modeled in CST microwave studio. The simulation model has triangular excitation input pulse feed to the peaking stage with 25 ns rise time, 150 ns pulse width and 113.75 kV peak amplitude. The radiated E far field is measured at 15 m distance gives the rise time 232 ps, pulse length 25 ns, and peak amplitude 14.886kV/m. The experiment for the same has been conducted and the E field is measured up to 50 m distance. The radiated field in the experiment is measured in open air. The amplitude of the maximum radiated far field, measured by using B dot sensor probe at different distance is match with the modeling results. The mathematical model is developed in MATLAB Simulink to calculate effect of step input on E far field radiation.