hi! I am simulating multilayered antenna structure, but I not getting accurate modes. I have simulated this antenna using Infinite Ground plane condition but now I want to resimulate it using actual ground plane, I have attached screenshot of the modes and design with a triangular top structure. Can anyone guide me through what mistake I have been doing . One moderator asked me to change meshing, I did that but its of no use because I am getting similar results
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