Design of UWB Hexagon Patch Antenna with WLAN Notch Band Characteristic

Abstract

In this paper, we have proposed a hexagonal patch UWB antenna with a band notch characteristic where the notch band of 5.15 ∼ 5.85 ㎓ band of WLAN was induced by inserting a circular slit in the patch. The impedance bandwidth of the proposed antenna meet the band width criteria of UWB communication system where is mentioned as frequencies range form 3.1 ∼ 11.8 ㎓. The characteristic band at 5.2 ∼ 5.8 ㎓ notch band was observed. The radiation pattern of the antenna shows a directinal radiation pattern at 0° and 180° in XZ-plane and YZ-plane is an omni-directional pattern, respectively.In addition, it is observed that increase in frequency results in increases of the antenna gain whereas the notch band section is decreased. The proposed antenna was designed TRF-45 substrate with thickness of 1.62 ㎜, a loss tangent of 0.0035, a relative permittivity of 4.5 and designed were used Ansys Inc. HFSS.