Study of multipactor suppression of microwave components using perforated waveguide technology for space applications

• Author(s) / Creator(s)

  • Ye, Ming
  • Li, Yun
  • He, Yongning
  • Daneshmand, Mojgan

• With the development of space technology, microwave components with increased power handling capability and reduced weight have been urgently required. In this work, the perforated waveguide technology is proposed to suppress the multipactor effect of high power microwavecomponents. Meanwhile, this novel method has the advantage of reducing components' weight, which makes it to have great potential in space applications. The perforated part of the waveguide componentscan be seen as an electron absorber (namely, its total electron emissionyield is zero) since most of the electrons impacting on this part will go out of the components. Based on thoroughly benchmarked numerical simulation procedures, we simulated an S band and an X band waveguidetransformer to conceptually verify this idea. Both electron dynamic simulations and electrical loss simulations demonstrate that the perforation technology can improve the multipactor threshold at least ∼8 dB while maintaining the acceptable insertion loss level compared with its un-perforated components. We also found that the componentwith larger minimum gap is easier to achieve multipactor suppression. This effect is interpreted by a parallel plate waveguide model. What's more, to improve the multipactor threshold of the X band waveguidetransformer with a minimum gap of ∼0.1 mm, we proposed a perforationstructure with the slope edge and explained its mechanism. Future studywill focus on further optimization of the perforation structure, size, and distribution to maximize the comprehensive performances of microwavecomponents.

• Date created

  2017-01-01

• Subjects / Keywords

  • Microwaves
  • Silver
  • Electron Emission
  • Electric Fields
  • Secondary Emission

• Type of Item

  Article (Published)

• DOI

  https://doi.org/10.7939/r3-0r4k-xm71

• License

  © 2017 AIP Publishing LLC. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Ye, Ming, Li, Yun, He, Yongning, & Daneshmand, Mojgan. (2017). Study of multipactor suppression of microwave components using perforated waveguide technology for space applications. Physics of Plasmas, 24(5), 052109 and may be found at http://doi.org/10.1063/1.4982665