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What is the diffrence btw PML and 'scattering boundary condition'?
Posted Dec 26, 2010, 4:01 a.m. EST RF & Microwave Engineering 2 Replies
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Setting a subdomain as PML and a boundary condition as scattering boundary can be used alternatively?
I checked it for one tutorial expamle( dielectric scattering PML ) and almost identical result is produced.
I checked it for one tutorial expamle( dielectric scattering PML ) and almost identical result is produced.
2 Replies Last Post Jan 12, 2011, 6:01 p.m. EST
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Posted:
1 decade ago
Hi
if you read the doc on RF for v4.1 you will get a rather ind epth explanation I believe:
in very short:
A BOUNDARY "port" or a "scattering" condition are to define absorbing/source electric boundaries, in a distributed or a lumped (port) , but in well defined way, this means among other that the wave can travel in both direction from or through the boundary.
While the PML is a DOMAIN feature simulating an infinite domain where ANY wave can propagate and dissapear (without being reflected back)
--
Good luck
Ivar
if you read the doc on RF for v4.1 you will get a rather ind epth explanation I believe:
in very short:
A BOUNDARY "port" or a "scattering" condition are to define absorbing/source electric boundaries, in a distributed or a lumped (port) , but in well defined way, this means among other that the wave can travel in both direction from or through the boundary.
While the PML is a DOMAIN feature simulating an infinite domain where ANY wave can propagate and dissapear (without being reflected back)
--
Good luck
Ivar
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Posted:
1 decade ago
Sir
If I want to caculate the Q factor of the whispering gallery mode in the 2D optical circular disk microdisk, what kind of boundary condtion shall I use? The Q factor is just limited to the radiation if I dont consider the absorption of the material .
Another question is shall I use the eigenfrequency analysis to calculate the eigenvalue? After that ,I chose the eigenvalues with small real parts(which with high Q) and calculate the Q factor in the which the imaginary part is divided by the real part. Is the method correct?
Thank you
If I want to caculate the Q factor of the whispering gallery mode in the 2D optical circular disk microdisk, what kind of boundary condtion shall I use? The Q factor is just limited to the radiation if I dont consider the absorption of the material .
Another question is shall I use the eigenfrequency analysis to calculate the eigenvalue? After that ,I chose the eigenvalues with small real parts(which with high Q) and calculate the Q factor in the which the imaginary part is divided by the real part. Is the method correct?
Thank you
Hi
if you read the doc on RF for v4.1 you will get a rather ind epth explanation I believe:
in very short:
A BOUNDARY "port" or a "scattering" condition are to define absorbing/source electric boundaries, in a distributed or a lumped (port) , but in well defined way, this means among other that the wave can travel in both direction from or through the boundary.
While the PML is a DOMAIN feature simulating an infinite domain where ANY wave can propagate and dissapear (without being reflected back)
--
Good luck
Ivar