A new corrugated tooth like slot microstrip antenna for WiMAX/satellite applications

This paper describes a new corrugated tooth like slot microstrip antenna fed with microstrip line. The proposed antenna is designed to achieve less than -10 dB return loss with good impedance matching at center frequencies 2.6 GHz, 3.6 GHz, 5.5 GHz and 6.1 GHz. The substrate thickness is 0.8 mm with dielectric constant 4.4. The proposed antenna shows gain more than 2.6 dB and above 90 % efficiency at all chosen center frequencies. Low cross-polarization exist as, the geometry of radiating patch is symmetric and inverse. The radiation patterns are symmetric and ominidirectional in elevation and azimuthal planes.