Modal and Time-Domain Analysis of Symmetric E-Shaped Slots for UWB Antenna with Frequency Band Notch Response

A low-profile, printed single band-notched ultra-wideband antenna is investigated. The antenna produces notch at frequency bands 4.75–6.2 GHz, while yielding UWB performance from 3 to 11 GHz. The modal analysis of the antenna is carried out to investigate the notch band formation. The effect of E-shaped slots in the patch on the resonant modes is analyzed by observing current distribution in the patch. It is observed that addition of slots increases the input impedance of TM21 mode which yields band notch response. Also the time-domain analysis is carried out to investigate the transfer function and group delay.