A compact printed inverted G-shaped monopole antenna for wireless applications

In this paper, a printed inverted G-shaped monopole antenna is proposed which is compact in size and fed by a microstrip feed-line, for wireless applications. The dimension of the proposed antenna is (20×20 mm
²
). It has two resonating frequencies one at 2.41 GHz and the other one at 5.10 GHz, which are operation band for the wireless LAN application. The percentage bandwidths at the two resonance bands are 20.83 and 35.40 respectively. The peak gain varies from 2.58 dBi to 2.57 dBi and 3.55 dBi to 3.55 dBi in the frequency range of 2.15 GHz/2.56 GHz and 4.40 GHz/6.25 GHz respectively. The value of peak gains at 2.41 GHz and 5.10 GHz are 2.60 dBi and 3.95 dBi which are sufficient for the operation of WLAN system satisfactorily. Consistent co-polar and permissible cross-polar radiation patterns are demonstrated by the proposed antenna in the desired bands of frequencies.