Miniaturization of strips loaded hexagonal microstrip patch antenna for advanced communication

Abstract

A spiral fork shaped hexagonal micro strip patch antenna is designed to operate at different frequencies, which are in ultra-wide band range (3.1-10.6GHz). The newly presented antenna is simulated on a Flame Retardant-4 (FR4) epoxy material with dielectric constant 4.4and overall size of structure is 28*28mm2. Coplanar waveguide feeding (CPW) is used in this design for easy simulation. This proposed triband structure resonates at 1.36GHz, 5.74GHz and 8.8GHz. The proposed pentaband antenna resonates at 2.38GHz, 3.64GHz, 6.76GHz, 7.36GHz and 8.98GHz with corresponding impedance bandwidths are 200MHz, 70MHz, 170MHz, 520MHz and 420MHz. The peak gains at their resonant frequencies are 1.77dB, 2.45dB, 3.53dB, 4.54dB and 2.28dB respectively with good radiation characteristics. These antennas are suitable for S-, C-and X-band applications.