Optimised radiative device of the EMP simulator with absorbing stuff

The radiative device made of metal sheet is the key part of an EMP simulator with absorbing stuff. In order to extend the effective work space, the radiative device is designed optimised. And the Finite-Difference Time-Domain (FDTD) method is used to model electromagnetic field of effective work space of the EMP simulator accurately. From the numerical result, we can see that the optimised radiative device can extend the effective work space largely.