Characteristic Mode Analysis using MATLAB

Hi,
I want to perform Characteristic Mode Analysis using MATLAB of a handset antenna.
I don't have FEKO licensed version. I am familiar with CST and IE3D.
In this regard I have two questions:

1. Can I use any of these EM softwares (CST/IE3D) for characteristic mode analysis?
2. Can anyone help me in MATLAB code?

Looking forward for your reply.

hello !
yes you can use CST , version 2016 has this feature.
Regards!