alionxj
Newbie level 6
pml boundaries
When I use a plane wave in free space to couple the energe into my model, how long should I choose the distance between the plane wave and the suface of my model? should be a quarter of wavelength or more? My model is EBG, the boundaries of the outspace of ebg should be set as master、slave or only radiation if I use HFSS? Should the face which is set as plane wave exitation be assigned as ”radiation" boundary? what is the different about "radiation" and "PML"?
Thanks for your time.
Added after 17 minutes:
when I use CST to simulate EBG structure, I use "unit cell" as the x,y directions' boundary, “open” as z direction's boundary. The exitation is from z direction, is set up at port "Zmax". Frequency domain solver is used to simulate. Method is “General purpose", Frequency range is from 300-450. Adapt.Freq. is 450. Excitation mode is TE00. broadband freq. sweep. But I found the results are different at high freq section when I change the distance between the exitation and pbg structure. why?
When I use a plane wave in free space to couple the energe into my model, how long should I choose the distance between the plane wave and the suface of my model? should be a quarter of wavelength or more? My model is EBG, the boundaries of the outspace of ebg should be set as master、slave or only radiation if I use HFSS? Should the face which is set as plane wave exitation be assigned as ”radiation" boundary? what is the different about "radiation" and "PML"?
Thanks for your time.
Added after 17 minutes:
when I use CST to simulate EBG structure, I use "unit cell" as the x,y directions' boundary, “open” as z direction's boundary. The exitation is from z direction, is set up at port "Zmax". Frequency domain solver is used to simulate. Method is “General purpose", Frequency range is from 300-450. Adapt.Freq. is 450. Excitation mode is TE00. broadband freq. sweep. But I found the results are different at high freq section when I change the distance between the exitation and pbg structure. why?