Numerical simulation of waveguide plasma limiter under high power microwave based on the SETD method

Lin Wang; Changjiang Liao; Ruicong Yuan; Dazhi Ding

doi:10.1117/12.2668440

21 March 2023 Numerical simulation of waveguide plasma limiter under high power microwave based on the SETD method

Lin Wang, Changjiang Liao, Ruicong Yuan, Dazhi Ding

Proceedings Volume 12595, Advanced Fiber Laser Conference (AFL2022); 125951G (2023) https://doi.org/10.1117/12.2668440
Event: Advanced Fiber Laser Conference (AFL2022), 2022, Changsha, China

Abstract

Aiming at the "front door" protection problem of radar system, a waveguide plasma limiter with short response time, short recovery time and high isolation is presented based on the reflection and absorption characteristics of electromagnetic wave for High-Power Microwave (HPM) environment. A self-consistent three-dimensional (3-D) multi-physics electromagnetic-plasma fluid model coupling full-wave Maxwell’s equations with plasma fluid equations is established and solved by the Spectral-Element Time-Domain (SETD) method to describe the operating mechanism of the waveguide plasma limiter. The Galerkin’s method is employed for the space discretization and the central difference scheme is used for the temporal discretization during the SETD process. Numerical results demonstrate that the gas with low critical breakdown field strength is more suitable for protecting high-power microwaves. Our research can provide theoretical guidance for designers and give the complete physical process of plasma limiter.

Citation Download Citation

Lin Wang, Changjiang Liao, Ruicong Yuan, and Dazhi Ding "Numerical simulation of waveguide plasma limiter under high power microwave based on the SETD method", Proc. SPIE 12595, Advanced Fiber Laser Conference (AFL2022), 125951G (21 March 2023); https://doi.org/10.1117/12.2668440

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