Abstract:
The transient response of a square strip loop antenna is investigated using the singularity
expansion method (SEM). The required natural modes of the loop are obtained to good
approximation using the finite difference time domain (FDTD) method together with
Prony's method. In order to generate a certain mode, a plane wave is used to excite the
loop antenna with both a frequency near to the natural loop mode (resonance) frequency
and with a spatial distribution approximating the mode loop current. The transient
response of a loop is studied for an incident short damped sinusoidal plane wave,
representing a high power microwave pulse, with different frequencies of the incident
wave.