Variable permittivity dielectric material loaded stepped-horn antenna
Variable permittivity dielectric material loaded stepped-horn antenna
Variable permittivity dielectric material loaded stepped-horn antenna
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Figure 4.22 Input reflection coefficient versus frequency of the <strong>stepped</strong>-<strong>horn</strong> <strong>antenna</strong>s for(εn = 1.0 6r2 = 1 . 0), (εr1 = 1.4 5r2 = 1.4), (εr1 = 1.2 5r2 = 1.4), (εr1 = 1.4 5r2 = 1.2)and empty <strong>horn</strong> <strong>antenna</strong> with L = 91.1 mm.