Concepts of Time-Frequency Structure and Pulse Compression of X-Band Radiation Generated by an Oversized Coaxial Cherenkov Generator

IF 4.1 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Electron Device Letters Pub Date : 2025-01-10 DOI:10.1109/LED.2025.3527975

Renzhen Xiao;Renjie Cheng;Kun Chen;Yanchao Shi;Xianchen Bai;Junqing Wang;Xinhong Cui

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引用次数: 0

Abstract

New concepts to generate extremely high output power with ultrashort pulse duration are developed. At first, an oversized coaxial Cherenkov generator with a profiled and extended slow wave structure is used to generate a time-frequency-modulated pulse with power of several tens of GW and duration of several nanoseconds. Then this time-frequency-modulated pulse can be compressed into a sub-nanosecond pulse with power exceeding 100 GW via a circular waveguide compressor after mode conversion. As an example, particle-in-cell simulation demonstrates that a pulse is obtained with power of 35 GW, duration of 3.0 ns, and frequency sweeping from 8.9 GHz to 11.0 GHz almost linearly. Injecting this pulse into a circular waveguide as TE

$_{\mathbf {{01}}}$

mode, it can be compressed into an ultrashort pulse with power of 168 GW and duration of 0.45 ns. Compared with previous method of producing superradiance pulse directly, the beam-wave interaction in the generator is not so highly unstable, and thus the whole system is more reliable and controllable.

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来源期刊

IEEE Electron Device Letters 工程技术-工程：电子与电气

CiteScore

8.20

自引率

10.20%

发文量

551

审稿时长

1.4 months

期刊介绍： IEEE Electron Device Letters publishes original and significant contributions relating to the theory, modeling, design, performance and reliability of electron and ion integrated circuit devices and interconnects, involving insulators, metals, organic materials, micro-plasmas, semiconductors, quantum-effect structures, vacuum devices, and emerging materials with applications in bioelectronics, biomedical electronics, computation, communications, displays, microelectromechanics, imaging, micro-actuators, nanoelectronics, optoelectronics, photovoltaics, power ICs and micro-sensors.