Mutual Coupling Effects for Radar Cross Section (RCS) of a Series-Fed Dipole Antenna Array

Figure 17

Effect of mutual coupling on RCS of series-fed linear array. 𝜃_𝑠=0^∘, 𝜓=𝜋/2, 𝑑=0.1𝜆, 𝑙=0.5𝜆, 𝑎=10⁻⁵𝜆, and 𝑍₀=150 Ω with unit amplitude uniform distribution for side-by-side configuration.

(a) 𝑁=10, 𝑍_𝑙=225 Ω

(b) 𝑁=20,𝑍𝑙=270 Ω

(c) 𝑁=40,𝑍_𝑙=275 Ω