Re: HFSS - Microstrip patch antenna (surface wave calculatio
To find the relation between radiation efficiency and the thickness of the substrate, I suggest to use microstripes. By my experience, it is easy enough to plot the radiation efficiency vs thickness of the substrate. Using microstripes, you can look the radiation efficiency from the graph of radiation pattern. From this graph, we can look directly the radiation efficiency and antenna efficiency. By changing the thickness of the substrate you can get the different result, so that you can plot it easily. I hope it can help you.