Triple-band Compact Monopole Antenna Using Defected Ground Plane

Abstract

In this paper, the design of a compact multiband antenna is proposed. The antenna is resonating at 2.4 GHz, 5.49 GHz and 7.83 GHz having band of operation 2.33–2.56 GHz for the IEEE 802.11b &g WLAN systems, 4.6–5.75 GHz for the IEEE 802.11a WLAN system.7.29–8.3 GHz for X band applications. The antenna has a compact size of 30 × 20 × 1.57 mm3. Concept of DGS is used in the proposed antenna for achieving the desired resonant frequency. Antenna parameters such as impedance bandwidth, current distributions, radiation patterns and antenna gain are studied using Ansoft HFSS. The antenna is found to have a peak gain of 6.06 dB at 7.83 GHz. The antenna is having an omni directional behavior throughout the range.