CST simulation error

[leekyg]

hi all,

Anyone know how to solve as attachment error?

My S11 looks very weird when I just change the material properties PEC by edit the epsilon and loss tangent.

kindly help, urgent :-(

regards,
leekyg

 

[johnjoe]

Can you post what you are simulating and how?

 

[Ahmed A. Naser]

Dear leekyg
always when you set the frequency range in CST do not start with (0) zero, for example start at 0.5 GHz.

 

[johnjoe]

It doesn't matter, cst only interpolates to 0Hz