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Microstrip Modeling, lumped port problem
Posted 02.06.2015, 06:04 GMT-4 RF & Microwave Engineering Version 5.1 1 Reply
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Hello,
I am a new COMSOL user. I am trying to model a grounded 3D microstrip. To study its s11, s12, ... parameters, I need to use ports to excite the microstrip. I used uniform lumped ports at each end of the microstrip. The microstrip is made of copper and i put a transition boundary condition on the face in contact with the dielectric material underneath it. the ground is represented by a perfect electric conductor on the opposed face of the dielectric.
Still, COMSOL doesn't want to do the study as "the uniform lumped port must be between 2 conductive boundaries"
Why ?
Thank you
I am a new COMSOL user. I am trying to model a grounded 3D microstrip. To study its s11, s12, ... parameters, I need to use ports to excite the microstrip. I used uniform lumped ports at each end of the microstrip. The microstrip is made of copper and i put a transition boundary condition on the face in contact with the dielectric material underneath it. the ground is represented by a perfect electric conductor on the opposed face of the dielectric.
Still, COMSOL doesn't want to do the study as "the uniform lumped port must be between 2 conductive boundaries"
Why ?
Thank you
1 Reply Last Post 02.06.2015, 15:12 GMT-4
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Posted:
10 years ago
It looks like you need to add a boundary material for the copper strip. Try that and see it the error goes away. You may have a TBC defined but if you don't have a material that goes with it, this error will pop up.