High power microwave system based on power combining and pulse compression of conventional klystrons

TL;DR

This paper presents a high power microwave system that combines and compresses pulses from conventional klystrons, achieving over 200 MW peak power suitable for advanced RF applications.

Contribution

It introduces a novel system integrating power combining and pulse compression of conventional klystrons with solid state modulation, enabling higher peak power outputs.

Findings

Achieved 210 MW peak power with pulse widths nearly 400 ns

Successfully combined two 50 MW klystrons in parallel

Demonstrated system's potential for large-scale RF applications

Abstract

A high power microwave system based on power combining and pulse compression of conventional klystrons is introduced in this paper. This system mainly consists of pulse modulator, power combiner, driving source of klystrons and pulse compressor. A solid state induction modulator and pulse transformer were used to drive two 50 MW S-band klystrons with pulse widths 4 {\mu}s in parallel, after power combining and pulse compression, the tested peak power had reached about 210 MW with pulse widths nearly 400 ns at 25 Hz, while the experimental maximum output power was just limited by the power capacity of loads. This type of high power microwave system has widely application prospect in RF system of large scale particle accelerators, high power radar transmitters and high level electromagnetic environment generators.