Design of a Band-Stop Planar Filter for Telecommunications Applications

Abstract This paper presents the design and the comparison of an Open circuit Microstrip Band Stop Filter using two simulators: CST microwave studio and Advanced design system (ADS). This filter is designed on central frequencies f1=2GHz and f2=4.5GHz. The simulation shows a coincidence between the S-parameter results for the proposed band-stop filter. The rejection band of the band-stop filter is about 76%, else the filter has 25 dB return loss, which characterized by good selectivity.