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Separating Substrate and Ground Changes S11 Significantly
Posted 28 mag 2025, 06:56 GMT-4 RF & Microwave Engineering, Geometry, Physics Interfaces Version 6.2 0 Replies
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Hey guys,
I'm working on simulating an antenna with a ground plane (green). Initially, the ground was modeled as part of the substrate, but since I want to study different ground geometries, I split them into two separate blocks: one for the substrate and another for the ground.
However, even before modifying the geometry, I'm seeing a significant difference in results. For instance, the S11 parameter shifts from -64 dB (combined model) to -23 dB (split model).
I've tried several things to resolve this, including:
Using Union, Compose, Ignore interior faces, and Merge entities
Adding a boundary layer in the mesh (but it takes ~2 hours just to generate the mesh)
None of these have solved the issue so far. Has anyone dealt with something similar? Is there a better way to replicate a layer?
Any insights would be greatly appreciated!
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Hello Beatriz Lopes
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