25 July 1989 The Transverse Energy Pattern Of An Electromagnetic Missile From A Circular Current Disk
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Abstract
The electromagnetic field from the current in a circular disk and its Poynting vector off the axis of propagation have been investigated both analytically and experimentally. These studies show that the electromagnetic (EM) missile has the following properties: (1) The waveform of the EM field when propagating remains similar in shape but diminishes in size. (2) The transverse distribution of energy around the axis is stable; i.e., when the longitudinal distance increases, the transverse pattern of the energy remains the same. This "plane-wave beam-like" property is different from continuous-wave (CW) radiation, in which the energy pattern is like that of a spherical wave. (3) The transverse energy pattern has a cusp on the axis. This property is also different from CW radiation. With CW, the radiation has a flat top on the axis of the main lobe.
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Hao-Ming Shen, Hao-Ming Shen, Tai Tsun Wu, Tai Tsun Wu, } "The Transverse Energy Pattern Of An Electromagnetic Missile From A Circular Current Disk", Proc. SPIE 1061, Microwave and Particle Beam Sources and Directed Energy Concepts, (25 July 1989); doi: 10.1117/12.951815; https://doi.org/10.1117/12.951815
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