International Journal of Engineering and Technology

A novel method of Beam forming network for multiband frequencies based on Nolen matrix (4×4) topology using multiband 90º ring Coupler was proposed and its performance was analyzed in this paper. The above method is able to produce a multiband Beam forming output with different center resonant frequencies for 2.8GHz, 6.3GHz and 9GHz which provides beam steering in various directions so as to avoid the interference between the users. Beam steering is used in smart antenna to minimize the wastage of power and to maximize the directivity in the desired direction .This formation was simulated and measured using Microstrip technology in ADS (Advanced Design system) software . The simulated and measured results show the good agreement in return loss.