Re: proximity-coupled patch antenna with slotted ground in C
Hi allendingjun,
I simulated once aperture-coupled antenna structures using Momentum. In order to avoid backward radiation an additional ground plane was used under the feedline. I tried to define same kind of structures in CST but could not define a slot layer as in Momentum.
I assume that the same type of problem is present in your design. Also, I think you define the port on a very large area, you should decrease that area or define the port as Discrete.