CST Waveguide Port Simulation

Thread Starter

Ayush742

Joined Apr 15, 2024
2
Hello,

I am trying to simulate the microstrip line with the waveguide port but the result is unusual. Could you please help to trace the issue.

I have attached the CST file here. Substrate height is 0.254mm.

.1713222305816.png

1713222330813.png

1713222349424.png


1713222377496.png


thank you
 

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ZCochran98

Joined Jul 24, 2018
304
I can't open the CST file on my personal computer, so there's a few things I can't check myself, but I can ask here:
  • What is your background material? PEC or "Normal?" Your background should be "Normal," unless you've defined an airbox.
  • When you select each port individually, which direction are the normals pointing? Inward or outward? They should point inward.
  • What are your boundary conditions? Are all boundaries grounded? Your max Z should probably be "open" (unless you're designing this to be in an enclosure), and whichever axis your microstrip is aligned to (looks like the x-axis?) should probably both be open at min/max.
I personally would also select "ensure shielding" on your ports.
 

Thread Starter

Ayush742

Joined Apr 15, 2024
2
  • What is your background material? PEC or "Normal?" Your background should be "Normal," unless you've defined an airbox.
1713339580807.png


  • When you select each port individually, which direction are the normals pointing? Inward or outward? They should point inward.
-> Both are inward pointed.


  • What are your boundary conditions? Are all boundaries grounded? Your max Z should probably be "open" (unless you're designing this to be in an enclosure), and whichever axis your microstrip is aligned to (looks like the x-axis?) should probably both be open at min/max.
1713339634040.png


Yes i have selected ensure shielding now.
 
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