Multipactor evolution and suppression in high-power ferromagnetic components

Li Yun; Feng Guobao; Xie Guibai; Miao Guanghui; Li Xiaojun; Cui Wanzhao; He Yongning

doi:10.11884/HPLPB202234.210479

Volume 34 Issue 6

Apr. 2022

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Article Navigation > High Power Laser and Particle Beams > 2022 > 34(6): 063002

Li Yun, Feng Guobao, Xie Guibai, et al. Multipactor evolution and suppression in high-power ferromagnetic components[J]. High Power Laser and Particle Beams, 2022, 34: 063002. doi: 10.11884/HPLPB202234.210479

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Li Yun, Feng Guobao, Xie Guibai, et al. Multipactor evolution and suppression in high-power ferromagnetic components[J]. High Power Laser and Particle Beams, 2022, 34: 063002. doi: 10.11884/HPLPB202234.210479

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Multipactor evolution and suppression in high-power ferromagnetic components

doi: 10.11884/HPLPB202234.210479

1.
National Key Laboratory of Science and Technology on Space Microwave, China Academy of Space Technology (Xi’an), Xi’an 710100, China
2.
School of Microelectronics, Xi’an Jiaotong University, Xi’an 710049, China

Received Date: 2021-11-09
Rev Recd Date: 2022-01-18

Available Online: 2022-02-16

Publish Date: 2022-06-15

Abstract

Abstract

Ferrite circulators are key components in the high-power microwave systems for the satellite payload application. Multipactor, which is prone to occur in the high-power vacuum system, is still a bottleneck problem for the on-orbit reliable system operation. The physical evolution model of multipactor in ferromagnetic components is proposed based on the secondary electron emission (SEE) properties. Using the model, the evolution laws of the initial electrons and multipacting electrons in practical components with micro-pore arrays are revealed. Furthermore, a novel anti-multipactor design method is proposed through controlling the surface SEE of the ferromagnetic material. A group of S-band circulators were designed and fabricated for the validation of the theory and design method. Calculation results and measurement data demonstrate that multipactor discharge has been suppressed successfully through lowering the surface SEE on the ferrite plates. Multipactor threshold power of the traditional circulator has been improved from 380 W to more than 3400 W using the optimized micro-pore structures, and the suppression efficiency is increased by more than 900%.
- satellite,
- ferromagnetic circulator,
- multipactor,
- suppression,
- evolution mechanism

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References(22)

References

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