Abstract: Here we used a lumped port excitation for the Co-Planar Waveguide (CPW) feed. We used copper cladding for cutout and for substrate dielectric material named Arlon Cu Clad 217(tm).The CPW slots and antenna shape acts as openings in a metallized plane. The antenna has been analyzed over frequency ranges of S-band (2.20-3.95(GHz)), C-band(4.90-8.20(GHz)) andX-band (8.20-12.40(GHz)).Their return loss, gain, directivity, VSWR and impedances have been compared. It is covered with air box depending on the minimum distance between the air wall and the radiating aperture at the starting frequency i.e., (9.375mm).Though experiments with bow-tie antennas of various extended angles, the bow-tie antenna with a 900 extended angle exhibits the widest bandwidth in the desired frequency band which has a bandwidth of 25% for a VSWR <1.5:1, 16.96% for a VSWR <1.2:1 and 9.19% for a VSWR <1.4:1