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Improvement of Electromagnetic Pulse Radiation Efficiency

机译：电磁脉冲辐射效率的提高

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摘要

Practical aspects of effective generation of short electromagnetic pulses (EMP) and improvement of radiation efficiency are discussed in this paper. Descriptions of the EMP radiation based on the Poynting vector definition and energy transformation are presented below. Antennas classification based on energy behavior in the radiating system is proposed and discussed. Properties of kinetic energy accumulated antennas are analyzed. To generate electromagnetic pulse the kinetic energy accumulated antenna is combined with such opening switch as drift step-recovery diode (DSRD). Operation principles of the DSRD are discussed. Criteria of diodes selection for its application in drift step-recovery (DSR) mode are proposed and described. Methods of provision the DSRD operation condition with a balanced current driver are developed and analyzed. A prototype of antenna-generator that utilizes proposed operation principles was designed, developed and examined. Waveform and power spectrum are presented. Peak power more than 1 kW was achieved on the antenna terminal with 3ns pulse duration and up to 200kHz pulse repetition frequency (PRF). The prototype's power consumption didn't exceed 4W under 100 kHz PRF condition. The proposed approach allows producing of stable nanosecond electromagnetic impulses with hundreds kilowatts peak power and PRF up to hundreds kHz.
机译：本文讨论了有效产生短电磁脉冲（EMP）和提高辐射效率的实际方面。下面介绍基于Poynting矢量定义和能量转换的EMP辐射。提出并讨论了在辐射系统中基于能量行为的天线分类。分析了动能累积天线的特性。为了产生电磁脉冲，将动能累积天线与诸如漂移逐步恢复二极管（DSRD）之类的断开开关组合在一起。讨论了DSRD的工作原理。提出并描述了二极管在漂移阶跃恢复（DSR）模式中的应用选择标准。开发并分析了为DSRD操作条件提供平衡电流驱动器的方法。设计，开发和检查了利用建议的工作原理的天线发生器原型。给出了波形和功率谱。在天线端子上以3ns的脉冲持续时间和高达200kHz的脉冲重复频率（PRF）实现了超过1 kW的峰值功率。在100 kHz PRF条件下，原型的功耗不超过4W。所提出的方法允许产生具有数百千瓦峰值功率和高达数百kHz的PRF的稳定纳秒电磁脉冲。

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