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Open Access Publications from the University of California

Shielding effect of a thick screen with corrugations

  • Author(s): Albani, M
  • Piazzesi, P
  • Capolino, F
  • Maci, S
  • Tiberio, R
  • et al.

Published Web Location Commons Attribution 4.0 International Public License

The shielding effectiveness of a corrugated thick screen is theoretically and experimentally investigated. This screen consists of a half-plane of finite thickness in which corrugations are etched on the smaller side. This structure provides a significant attenuation in the shadow region for both polarizations of the incident field; thus, it can be effectively used for protecting apparatuses from radiating interference as well as for decoupling nearby operating antennas. The shielding properties of the screen are described by a high-frequency formulation that involves dosed-form expressions. An experimental setup at X band has been arranged to test the effectiveness of a corrugated screen; the field in the shadow region is compared with that of a screen without corrugations. The experimental results compare very well with those obtained by the high-frequency expressions.

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