TRANSIENT BACKWARD AND FORWARD SCATTERING OF ELECTROMAGNETIC-WAVES BYA CONDUCTING RECTANGULAR CYLINDER WITH AN OPEN SIDE-WALL - THE CASE OF A HALF SINE PULSE INCIDENT ON THE OPEN SIDE AND THE CLOSED SIDE

The transient scattering of a half sine pulse wave by a conducting rec tangular cylinder with an open side-wall is rigorously analyzed by usi ng the point matching method (taking into account the edge condition e xactly) combined with the fast inversion of Laplace transform. Numeric al results are presented for back scattered and forward scattered resp onses of the far fields when a half sine pulse is incident on the open side and the closed side of the cylinder. The physical meaning of the transient responses is discussed in detail. The comparison of the res ponses with those by a perfect conducting rectangular cylinder is pres ented.