A double layer FSS filter for sub-THz applications

A Ghavidel; M Kokkonen; S Myllymäki

doi:10.1038/s41598-021-99256-2

A double layer FSS filter for sub-THz applications

Sci Rep. 2021 Oct 5;11(1):19773. doi: 10.1038/s41598-021-99256-2.

Authors

A Ghavidel¹, M Kokkonen², S Myllymäki²

Affiliations

¹ Microelectronics Research Unit, University of Oulu, 90014, Oulu, Finland. ali.ghavidel@oulu.fi.
² Microelectronics Research Unit, University of Oulu, 90014, Oulu, Finland.

Abstract

This work presents the simulated and measured performance of single- and double-layer frequency selective surface filters for operation at sub-THz frequencies (250 GHz center frequency). They were composed of concentric square loops with a split as a unit cell resonator on top of a low dielectric permittivity, low thickness material (RT5880). Both a single layer filter and a cascaded two layer filter with varied distances were investigated. The simulated bandwidth for the cascaded filter was 27 GHz and 16 GHz and 9 GHz bandwidth measured with a THz-TDS and microwave system.

Abstract

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