Design of a Modified Slotted Monopole Fractal Antenna for Wideband Applications

Abstract

The proposed antenna consists of a fractral monopole radiator with a defected ground structure fabricated on a low-cost FR4 epoxy substrate. A prototype has been fabricated to verify the 2.74 GHz-7.33 GHz wide operating band of the proposed design. The simulated 2D radiation patterns exhibit omnidirectional characteristics throughout the wide operating band. The pro- posed design is having the dimension of 0.32λ×0.2λ×0.014λ (λ represents the wavelength at 2.74 GHz). The proposed design is having realized gain more than 2.5 dBi and can be suitable for ISM band, WLAN, C-band, and S-band applications. Index Terms—Monopole Antenna, Fractal, ISM band, wideband, multiband.