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Figure 14
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Mean absorption coefficient α (a), mean normalized surface impedance zs (b), calculated with 20 azimuth angles θ ∈ [0, 2π] for three incidence angles ϕ and for the configuration shown in Figure 2 with a = 105 cm, b = 33 cm, Δm ≈ 6.6 cm, λ = 10−9, za = 0.5 cm, d = 3 cm. The shaded areas indicate the variance of θ ∈ [0, 2π].
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