Transient response of resistively loaded dipole antennas for pulse radar

To improve the coverage and the resolution of the baseband pulse radar system, it is important to predict accurately the characteristics of the transmitting and receiving antennas due to a pulse and the electromagnetic transient field scattered by a target. In this paper, a moment method and Fourier transform are presented to solve the problem of transient coupling between two orthogonally and resistively loaded dipole antennas and a thin‐wire target, both placed in free space. Numerical results show that if resistances with optimum values are loaded in both arms of the dipoles, the multiple reflections arising between their ends and their feeder can greatly be suppressed. Based on these results, the coverage method for such a pulse radar system using resistively loaded dipoles as well as the near field patterns at the first resonant frequency are examined.