Offset Feed Line Inclined Aperture Coupled Stacked Microstrip Antenna Design

This paper presents the dual frequency and dual polorized microstrip antenna which comply with the requirements of the wireless local area network (WLAN). By using inclined aperture, single feed with dual frequency and dual polarization is achieved. Radiated aperture, parasitic stack patch and offset feed line is used to increase bandwidth. According to simulation and measurement results, the normalized bandwith extensions (for lower frequencies: 11.5% and for upper frequencies: 27.6%) are obtained for both frequency bandwidths with respect to the necessary requirements (for lower frequencies: 3.3% and for upper frequencies : 19%) [1].