Field Enhancement in a Grounded Dielectric Slab by Using a Single Superstrate Layer

Figure 4

Enhancement factor as function of the superstrate’s relative thickness 𝑤₂/𝐿 for 𝜖_𝑟1=50−5𝑗, 𝜖_𝑟2=9, 𝜇_𝑟2=1 with (a) 𝐿=0.5𝜆₀ and 𝜒/𝜆₀=0.01,0.05,0.5 and (b) 𝜒/𝜆₀=0.1 and 𝐿/𝜆₀=0.1,0.2,0.3,1.

(a)

(b)