6 Threads found on edaboard.com: Pml Boundary Cst
Hi to all,
I want to get a dispersion diagram of a periodic structure where one side should be radiation boundary.How can I get that with cst or HFSS
by using the eigenmode solver that don't support,both, radiation(pml) or open add space boundary?
I should use an air box on the top. How sufficiently large and what should (...)
Electromagnetic Design and Simulation :: 10-14-2011 04:41 :: skymaster :: Replies: 0 :: Views: 1148
I am trying to simulate the propagation of of EM waves through the ground as well as the reflection from the surface. The main problem with the cad software that I used (HFSS, cst, Semcad) is the pml boundary conditions ? They seem to work only for a single background material and not for two half spaces (air/dielectric).
Electromagnetic Design and Simulation :: 12-12-2010 23:45 :: adel_48 :: Replies: 2 :: Views: 1809
I am simulating a simple microstrip trace in cst. I am using discrete ports and pml (open + add space) boundary conditions. I notice that S12 does not quite reach 0dB at DC, even with PEC models for the conductors and no dielectric loss.
Is there something I should be doing to get S21 -> 0dB?
Electromagnetic Design and Simulation :: 11-11-2009 14:28 :: kowal_edward :: Replies: 1 :: Views: 1200
I think you forgot to give the dimension of your pml vaccum box, so people cannot help much!
Just put your pml vaccum box at distance lambda/2 (minimum) from the closest microstrip.
It's a small box.
Electromagnetic Design and Simulation :: 08-12-2006 09:48 :: costox :: Replies: 9 :: Views: 2653
both boundary condtions use pml (perfectly matched layer). The "add space" enlarges the calculation box automatically for antenna problems, i.e. radiation patterns.
RF, Microwave, Antennas and Optics :: 07-02-2006 17:10 :: Pushhead :: Replies: 8 :: Views: 3602
I was simulating using C*S*T software and I encounter a message saying
"inhomogenous material at pml boundary detected"
Could I know what does that mean and how about do I go about solving it?
RF, Microwave, Antennas and Optics :: 05-29-2004 07:20 :: yuppi77 :: Replies: 2 :: Views: 1448