Boutejdar, AhmedChallal, MouloudAzrar, Arab2015-04-222015-04-2220111054-4887https://dspace.univ-boumerdes.dz/handle/123456789/484This paper presents a novel compact microstrip band-stop filter (BSF) based on octagonal defected ground structure (DGS) along with interdigital and compensated capacitors. The proposed BSF has lower and higher cut-off frequencies of 3.4 GHz and 5.3 GHz, respectively. A comparison between simulation and measurement results confirms the validity of the BSF configuration and the design procedure. The compact filter occupies an area of (0.45g × 0.35g) with g = 0.044 m on an r = 3.66 substrate and shows a 44% bandwidth ( 2GHz) and a return loss of 0.1 dB. The experimental results show the excellent agreement with theoretical simulation resultsenBand-stop filter (BSF)Compensated capacitor defectedGround structure (DGS)interdigital capacitor (IDC)Article