Fig. 7

Forward-scattering efficiency of nihility, PEC and PMC sphere as a function of b/a when ϵ1 = − 2.54, μ1 = − 1, a = 0.5 × λ, f = 1GHz
Forward-scattering efficiency of nihility, PEC and PMC sphere as a function of b/a when ϵ1 = − 2.54, μ1 = − 1, a = 0.5 × λ, f = 1GHz