Anbu Selvam Venkatachalam

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—In this paper, a performance-enhanced ultrawide-band monocycle pulse generator circuit using a step recovery diode is designed and tested. Factors that could cause pulse wave-form distortions are analyzed. By applying an attenuator and a simple yet effective pulse-shaping circuit, the impedance matching between the pulse generator and the oscillator source(More)
This paper describes the development of new air-coupled ultrawideband ground-penetrating radar (GPR) for highway pavement and bridge deck inspections that can achieve high spatial resolution and high inspection performance while operating on vehicles driving at regular highway speeds. The major design features include dual-frequency band operation, 8(More)
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