Power Divider output ports

Hi
I am designing an UWB power divider/combiner using CST.

The geometry of the design is relatively small and I can't place a waveguide port with the perfect dimensions for the output ports because they are close to each other. Can someone help me to place small ports.

Thanks for help.

regards

You can use a reduced-height rectangular waveguide to use the space, or, you can use waveguide-to-your structure transitions.