A novel theoretical approach of fishnet-type material composed of multilayer metallic patterns by the equivalent circuit

In this paper, an equivalent circuit of a fishnet-type material composed of multilayer metallic patterns is proposed. The fishnet-type material can be considered as a rectangular waveguide with stubs, and the operation principles can be simply and clearly explained by a proposed equivalent circuit. Proposed equivalent circuit can be useful for analyzing and designing of fishnet-type material.