A Low-Profile Reflector-Enhanced Drop-Shaped Printed Antenna for Wide-Band Wireless Communications

Figure 14

Location, in the complex -plane, of the SEM-based dominant poles of the time-domain response of the drop-shaped antenna with and without reflector. The magnitude of the residues associated with each pole is marked with a specific colour. For the sake of clarity only the poles distributed in the second quadrant of the complex -plane are reported in the figure.