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

Figure 15

Time-domain antenna response computed at  m along the boresight of the drop-shaped antenna (a) with reflector and (b) without reflector. The migration of some poles towards higher frequencies is responsible for a larger ripple level in the late-time response of the antenna equipped with the metal reflector.

(a)

(b)