Design of Rectangular Stepped DRA for Wireless Local Area Network (Wlan) Applications

In thi s paper, a dielectric resonator antenna (DRA) is presented for wireless local area net work (WLAN) applications. Here three rectangular dielectric resonators are used as stepped manne r. The DRA is excited by micro strip line which is an effective feed mecha nism to obtain better radiation. In this design, rectangular shape was used as the dielectric resonator as it offers more option to control the resonant frequency. Simulated results show that DRA array has a better resonant frequency for DR height, hr = 1 mm each and micro strip line fed by at - 5.5 mm . The retune loss is 15.0 dBi , directivity achieves 6.2 dBi and the gain of 6.48dBi at 5.5Ghz frequency. The proposed design is suitable for Wireless Local Area Network (WLAN) IEEE 802.11 standard applications & HIPERLAN (high - performance radio LAN) applications which operate at 5.15 GHz to 5.50 GHz.