Hello,
I am using the transient RF module in Comsol 4.4. I want to assign a sheet impedance, Zs, on a boundary such that Etan=Zs*Js, where Etan is the tangential electric field on the boundary and Js is the surface current density on that boundary. This expression is applicable in the frequency domain. To define a capacitive surface impedance in the time domain, I assigned a surface current density of Js=Cs*d(temw.Ex,t), where Cs is the surface capacitance.
However, I am running into trouble when I try to define an inductive impedance. In this case, we need temw.Ex=Ls*dJs/dt which leads to a surface current density of Js=timeint(0,t,temw.Ex)/L. This expression is not acceptable by Comsol.
My question is: How can I define an inductive sheet impedance on a boundary?
Thank you
I am using the transient RF module in Comsol 4.4. I want to assign a sheet impedance, Zs, on a boundary such that Etan=Zs*Js, where Etan is the tangential electric field on the boundary and Js is the surface current density on that boundary. This expression is applicable in the frequency domain. To define a capacitive surface impedance in the time domain, I assigned a surface current density of Js=Cs*d(temw.Ex,t), where Cs is the surface capacitance.
However, I am running into trouble when I try to define an inductive impedance. In this case, we need temw.Ex=Ls*dJs/dt which leads to a surface current density of Js=timeint(0,t,temw.Ex)/L. This expression is not acceptable by Comsol.
My question is: How can I define an inductive sheet impedance on a boundary?
Thank you