Broadband and ultrathin screen with magnetic substrate for microwave reflectivity reduction

Abstract

This paper presents an ultrathin screen with magnetic substrate for broadband microwave reflectivity reduction. The magnetic substrate was fabricated by mixing a MnTi substituted M-type barium ferrite and a Co substituted W-type barium ferrite. The screen with the magnetic substrate thickness of 1.1 mm (λ0/25) can achieve the fractional bandwidth (Δf/f0) of 46% at X band, which almost increases by 150%, as compared to the corresponding screen with dielectric substrate.