A slot loaded rectangular antenna is designed to resonate at two distinct frequencies. Initially, the antenna is designed using high frequency simulation software CST microwave Studio. The antenna is designed by introducing one slot near center and other slots on both side of the central slot, placed diagonally, to observe frequency variation leading to tuning the designed frequency. Addition of slots on the patch with variations in feed point location shows dual frequency tuning behavior at two resonant frequencies. Variations of the slot distance with respect to each other along with changing the feed point location is studied with tuning of the resonant frequency within the same band (L and S -Band). Both simulated and measured results indicate that RL values are not degraded thus performance of the antenna is not disturbed with dual frequency behavior of the antenna with tuning of the frequency/ frequencies.