title: Verification and improvement of equivalent refractive index models for evaluating the shielding effectiveness of high-transmittance double-layer metallic meshes.
abstract: The validity of real and complex equivalent refractive index models (ERIMs) is verified for a shielding effectiveness evaluation of high-transmittance double-layer metallic meshes. Theoretical and experimental studies show that the real ERIM is invalid for thin substrates and inaccurate for thick substrates for double-layer meshes, although it has long been used successfully for single-layer meshes. However, the complex ERIM shows more reasonable results not only for double-layer but also for single-layer meshes, and the evaluation accuracy is further improved by modifying the equivalent reactance coefficient using least-squares fitting. Therefore, the modified complex ERIM is applicable in most conditions.
authors.forename: Zhengang
authors.initials: Z
authors.lastname: Lu
authors.forename: Yeshu
authors.initials: Y
authors.lastname: Liu
authors.forename: Heyan
authors.initials: H
authors.lastname: Wang
authors.forename: Jiubin
authors.initials: J
authors.lastname: Tan