Design of conjugate DRA with power divider for WLAN applications

In this paper, a new conjugate dielectric resonator antenna (DRA) with aperture coupled feeding is presented for wireless local area network (WLAN) applications. Here two different DRAs of permittivity 15 and 10 respectively are fed using aperture coupling method. A power divider is designed to provide same power to both the DRAs. The power divider is designed by inserting quarter wavelength lines in the feed line connecting both the DRAs. The width of the quarter wavelength line is calculated using appropriate mathematical equations. Both the DRAs are excited at the same time and in the result a narrow band with center frequency at 2.9 GHz is obtained. This can be used for IEEE 802.11b WLAN applications. The parametric studies are done by varying the horizontal slot length and the feed line lengths using CST software.