A Wide-Bandwidth Monopolar Patch Antenna with Dual-Ring Couplers

Figure 3

Simulated 𝑆₁₁ for the proposed antennas with different parameters. (a) Simulated 𝑆₁₁ for different 𝑅_𝑝 (𝑊₁= 0.3 mm, 𝑊₂ = 1 mm, 𝑅₁ = 12.25 mm, 𝑅₂ = 11.25 mm). (b) Simulated 𝑆₁₁ for different 𝑊₁ (𝑅_𝑝=18 mm, 𝑊₂ = 1 mm, 𝑅₁=12.25 mm, 𝑅₂=11.25 mm). (c) Simulated 𝑆₁₁ for different 𝑊₂ (𝑅_𝑝=18 mm, 𝑊₁=0.3 mm, 𝑅₁=12.25 mm, 𝑅₂=11.25 mm). (d) Simulated 𝑆₁₁ for different 𝑅₁ (𝑅_𝑝=18 mm, 𝑊₁=0.3 mm, 𝑊₂=1 mm, 𝑅₂=11.25 mm). (e) Simulated 𝑆₁₁ for different 𝑅₂ (𝑅_𝑝=18 mm, 𝑊₁=0.3 mm, 𝑊₂=1 mm, 𝑅₁=12.25 mm).

(a)

(b)

(c)

(d)

(e)