Dual band sleeve dipole antenna for WLAN applications

A dual band sleeve dipole antenna for WLAN application is presented. The antenna covers both the WLAN bands. The proposed antenna exhibits excellent omni-directional characteristics and reflection properties S
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values which are less than −10db. The dipole is constructed from two concentric hallow cylinders having different radius and different lengths. The complicated balun network is avoided by feeding the antenna at the center with the help of coaxial cable. The scattering parameters and radiation patterns are simulated using CST microwave studio. These simulation results are validated by the measured results. The antenna is best suitable for airborne and outdoor applications.