Antenna source identification in time domain electromagnetic

In this paper, we introduce two numerical methods to get an electric source that gives a specified electromagnetic field at a specified time. The first one is called Time Reversal Method (TRM) and the second one is called Linear Combination of Configuration Fields (LCCF). We will first present briefly the two methods. Then we will compare them on simple examples and show that LCCF method gets some advantages versus TR method. Finally, we will illustrate the LCCF method on more complex examples.