Dual Strip-Excited Dielectric Resonator Antenna with Parasitic Strips for Radiation Pattern Reconfigurability

Figure 6

DRA return loss for both cases (Case I and Case II, as mentioned in Table 1), with 𝑎=32 mm, 𝑏=29.6 mm, 𝑑=48.85 mm, 𝐿₁=30 mm, 𝑊₁=5.3 mm, 𝐿₂=22 mm, 𝑊₂=1.5 mm, and 𝑀₁=20 mm and 𝑀₂=45 mm, 𝑇=2.95 mm, 𝑑_sma=44.26 mm, 𝑠_th=1.575 mm, 𝑃_𝑑=5 mm, and 𝐿=𝑊=130 mm.