Problem with hybrid ring(rat race), CST

[yekmosafer]

rat race hybrid

Hi all,
I am designing a hybrid ring (rat race), on CST Microwave Studio,It have 3 ports that are on a surface an a cylinder.
when I am trying to use Waveguide ports on rotated ports i have problem that Waveguide ports must be aligned in a plane parallel to the coordinate axes.
I tried to use local coordinate but it was not useful.
Does anyone know how can i resolve these problem.
Thanks in advance

this is my file

 

[maxwellian]

hybrid ring + rat race circuit

Why are you using a full 3D EM solver to model a planar circuit? Planar EM simulators can model structures like this so much more quickly and easily, and drawing the circuits is far easier and faster.

 

[shazdek0ch0l0]

rat am ring

maybe when you define the port, gnd included with it , and it will be cause these erors,check the place your port

 

[mauloftin]

how to build rat race circuit

Hi,
your port is wrong, try in the help find "port"

or look at the showroom on CST web, for example

https://www.cst.com/Content/Showroom/05/05.html -

watch how to make a port


btw - you need port on the all gate, because in this case it would be open circuit

 

[flyhigh]

hybrid ring

Hi

Perhaps you can use lumped ports. They are not restricted to be parallel to the coordinate system.

flyhigh