A multiband planar antenna fed by coplanar waveguide technique is presented in this paper. The proposed antenna is a microstrip slot antenna having CPW feed with circular and linear polarization characteristics. The proposed antenna is a 40×40mm2 structure designed on FR4 substrate of thickness 1.6mm on CST Microwave Studio. Designed antenna resonates at 2.4GHz, 4.62GHz and 7.0GHz which can be used for bluetooth, radio navigation, satellite communication and radiolocation applications. The lower and upper bands are circular polarized while the mid band is linearly polarized. © 2018 IEEE.