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Proceedings of the Asian Electromagnetic Symposium (ASIAEM 2017)

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This compendium comprises technical papers and extended abstracts presented at the Asian Electromagnetic Symposium (ASIAEM 2017) held in Bengaluru, India. It covers research on High-Power Electromagnetics (HPEM), High-Altitude Electromagnetic Pulse (HEMP), Intentional Electromagnetic Interference (IEMI), lightning characterization and protection, advanced antenna design, high-power microwave (HPM) sources, and electromagnetic compatibility (EMC) testing standards and methodologies.
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ST_CODE: 101020

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DOC-ASIAEM20

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Modification of Impulse-Radiating Antenna Waveforms to Obtain Damped Sinusoidal waveforms

D. V. Giri (Dept. of ECE, Univ. of New Mexico; Pro-Tech), F. M. Tesche (EM Consultant). Abstract— This paper describes a simple modification that can be applied to the Impulse-Radiating Antenna (IRA) to modify its output waveform to yield damped sinusoidal waveforms, for possible electromagnetic field testing of infrastructure elements. This modification involves placing several metallic screens in front of the antenna, which serves to transform the fast pseudo-impulse from the antenna into a damped sinusoidal waveform. In this presentation, a short parametric study of wire mesh transfer functions is conducted and the transient waveforms produced by several different meshes are described. Keywords: Impulse Radiating Antenna, wire mesh, damped sinusoids, infrastructure testing. I. INTRODUCTION: High power electromagnetic (HPEM) fields can cause damage or functional upset in targeted systems. SWIRA consists of a parabolic reflector of diameter D = 1.8 m with a focal length F = 0.482 m. II. WIRE MESHES IN FRONT OF SWIRA: Wire meshes with square apertures (dimension a, wire radius r, separation d) transform the SWIRA EM field into a damped sine wave.

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This compendium comprises technical papers and extended abstracts presented at the Asian Electromagnetic Symposium (ASIAEM 2017) held in Bengaluru, India. It covers research on High-Power Electromagnetics (HPEM), High-Altitude Electromagnetic Pulse (HEMP), Intentional Electromagnetic Interference (I...