Planar ESPAR Array Design with Nonsymmetrical Pattern by Means of Finite-Element Method, Domain Decomposition, and Spherical Wave Expansion

Figure 6

Different cuts over ϕ-plane (copolar component of the radiation pattern) for an array with prescribed maximum at ϕ = 0 and θ = 30° and a attenuated value 7 dB below the maximum at ϕ=180 and θ=30°. Loading reactances: 𝑗𝑋₁=9.52𝑗Ω, 𝑗𝑋₂=−42.55𝑗 Ω, 𝑗𝑋₃=84.39𝑗 Ω, 𝑗𝑋₄=242.69𝑗Ω, 𝑋₅=66.39𝑗Ω, and 𝑋₆=−45.83𝑗Ω. Full-wave results obtained by CST Microwave Studio have been included for comparison purposes.

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