Small Broadband Antenna Designs for 3G Handset Applications

Two improved, small, compact, and broadband handset antenna designs for 3G band based on gap oupled patch and FS-PIFA techniques are presented. The antennas, the Inverted Gap-CoupledCoplanar patch antenna (IGCC) and Finite ground plane Full-Shorted Planar Inverted-F Antenna (FFS-PIFA) are simulated using Zealand IE3D 8.2 em simulator. Simulation results give fractional bandwidths of 28.2% and 40.1 % at 10 dB Return Loss for IGCC and FFS-PIF A respectively.The IGCC was fabricated due to its simple fabrication. Measured results for IGCC gave a fractionalbandwidth of31% at 10 dB Return Loss atfc = 1.95 GHz and with 4 dBi gain. The patch dimensionsfor both antennas are 33 x 32 mm with a ground plane size of 40 x 60 mm. These antennas arepromising for 3G applications.