Laboratory of Nonlinear Electrodynamic Systems, Institute of High Current Electronics, Tomsk 634055, Russian Federation.
Rev Sci Instrum. 2023 May 1;94(5). doi: 10.1063/5.0144386.
The work on the development of a generator of high-power, high-frequency pulses based on a nonlinear transmission line with saturated ferrite is presented. A feature of the generator is that the ferrite rings are saturated in the field of permanent magnets, unlike traditional generators with a solenoid wrapped around the transmission line. Due to the changed structure of the inner conductor, which is a corrugated conductor, the line has spatial dispersion. The paper demonstrates the generation of high-frequency pulses with a duration of up to 6 ns and a center frequency of 2.7 GHz. This pulse duration with a frequency above 2 GHz was not previously observed in traditional nonlinear transmission line geometry. The maximal peak power achieved was 70 MW for an incident voltage pulse of 90 kV. The energy efficiency of video pulse energy conversion into radio pulse was 6% [G. Kataev, Electromagnetic Shock Waves (Sov. Radio, Moscow, 1963)]. The paper discusses the performance of RF and microwave NiZn ferrites for the purposes of radio pulse generation.
提出了一种基于带有饱和铁氧体的非线性传输线的高功率、高频脉冲发生器的研制工作。该发生器的一个特点是，铁氧体环在永磁体场中饱和，这与传统的用螺线管缠绕传输线的发生器不同。由于内导体的结构发生了变化，采用了波纹导体，因此该线具有空间色散。本文展示了具有高达 6 ns 脉宽和 2.7 GHz 中心频率的高频脉冲的产生。在此之前，在传统的非线性传输线几何结构中，没有观察到频率超过 2 GHz 的这种脉冲持续时间。对于 90 kV 的入射电压脉冲，实现的最大峰值功率为 70 MW。视频脉冲能量转换为无线电脉冲的能量效率为 6%[G. Kataev，电磁冲击波（Sov. Radio，莫斯科，1963）]。本文讨论了用于无线电脉冲产生的射频和微波 NiZn 铁氧体的性能。
