Energy patterns of the prototype Impulse-Radiating Antenna

D. Giri, F. Tesche
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引用次数: 2

Abstract

A question that often comes up in the context of an Impulse-Radiating Antenna (IRA) is “How is the transient energy from the pulser radiated in space”? Of course, the electromagnetic fields (both E and H), the power density and the energy density have their maximum on the boresight. The power pattern is a well-defined frequency domain concept, but it is a cumbersome descriptor for hyperband antennas like the IRA because of the multitude of frequencies involved. In this paper we explore the concept of an energy pattern, which is valid both in time and frequency domains. An energy pattern is useful in visualizing where the transient energy injected into the IRA is going. It is further noted that the energy and power patterns are identical for a CW antenna, but they can be vastly different for pulsed antennas.
脉冲辐射天线原型的能量图
在脉冲辐射天线(IRA)的背景下经常出现的一个问题是“脉冲发生器的瞬态能量是如何在太空中辐射的”?当然,电磁场(E和H)、功率密度和能量密度在炮眼处都有最大值。功率模式是一个定义良好的频域概念,但对于像IRA这样的超频带天线来说,它是一个繁琐的描述符,因为涉及的频率很多。本文探讨了在时域和频域都有效的能量模式的概念。能量模式有助于可视化注入IRA的瞬态能量的去向。进一步指出,对于连续波天线,能量和功率模式是相同的,但对于脉冲天线,它们可能会有很大的不同。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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