Line fed slot antenna

[VigneshYork]

Hello,

I would like to check how to provide input (edge source) for a slot monopole antenna with a shortened ground plane (images attached).
I have followed the patch antenna tutorial but not sure how to work with this ground plane

Ground plane

Patch

Thanks,
Vignesh

[Cosimo]

You could make the substrate the same size of the ground plane and shorten the patch microstrip line, so that you could still draw an axis-aligned polyline which connects microstrip line and ground plane (as in the microstrip-fed patch antenna tutorial).

[VigneshYork]

Hi,

Thank you. But that would make the ground plane the same size of the substrate face. The paper suggests having a smaller ground plane to improve the power transmitted

[Cosimo]

Then you can keep the substrate as it is and translate the edge source (polyline) along the microstrip line until it also touches the ground plane (keeping it always axis-aligned).