DESIGN OF WIDEBAND PRINTED SLOT ANTENNA WITH POLARIZATION DIVERSITY USING HYBRID FEEDING TECHNIQUES

A single layer wide band printed slot antenna with polarization diversity using a hybrid feeding technique. Here the feeding techniques used are aperture coupled feeding and co-planar waveguide feeding. The Horizontal polarization mode is excited by aperture coupled microstrip feedline with 180 degrees phase difference to reduce cross polarization and thereby increasing the isolation level. The vertical polarization mode is excited by rectangular patch and it is connected to a coplanar waveguide feedline for good impedance matching. Proposed antenna has compact structure, wider bandwidth and improved isolation level. By introducing fan shaped slot antenna with dual polarization and isolation level will be improved to 50 dB.