Development of novel double eye structured dual band antenna for 802.16d (Fixed Wi-MAX)

This paper presents a Novel dual band double eye structured antenna for 802.16d (Fixed Wi-MAX). The proposed dual band antenna can produce two resonant frequencies within Wi-MAX range at 2.5 GHz and 5.6 GHz. The return loss of the proposed antenna is about -32 dB at 2.5 GHz and -42 dB at 5.6 GHz. The value of VSWR is ≤ 2 in the frequency ranges from (1.8-2.9) GHz and from (4.5-6.6) GHz. The simulation results demonstrate the -10dB impedance bandwidth at (1.8-2.9) GHz and (4.5-6.6) GHz. The radiation distribution of the proposed antenna is directional in H-plane and E-plane which is very closely matched with the operating range of fixed Wi-MAX. The dual band antenna is designed and its characteristics are simulated using Ansoft HFSS (High Frequency Structured Simulator).