Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.
Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.
AC impedance of a dipole
Posted Dec 3, 2013, 8:02 AM EST AC/DC & Electromagnetics, Modeling Tools, Parameters, Variables, & Functions, Results & Visualization Version 4.3a 3 Replies
I am at the moment trying to simulate a simple system and I am having a few problems.
I am trying to calculate the self impedance of a dipole located inside a full space of conductivity 0 and permittivity 80.
The dipole is composed of two electrodes represented by two spheres, one is at a potential of 1V and the other is set at the ground. I put the spheres in a rectangle representing the full space.
I would like to plot the self impedance of the dipole as a function of frequency. The self impedance can be expressed as :
Z = (Vt2 - Vt1)/i
Where Vt2 and Vt1 are the potential of the two electrodes and i is the current fed to an electrode. I do a study with in frequency domain : range(1,10,1000).
I then attempt to plot a 1D plot -> Global with frequency in x axis and impedance in y axis.
I do not know what to put in the expression for the Y axis, indeed i would like to plot the formula above but I am unable to find how to express Vt1, Vt2 and i. Is it possible ?
Is there a way to plot directly the self impedance of the dipole with Comsol ?
Thank you very much for your help