Miniutrized Band-Stop Filter (BSF) with Defected Ground Structures (DGS) for Use in X-Band Transceivers

This paper work deals with design and development of compact microstrip band-stop filter (BSF) for radar applications. The microstrip filter configuration consists of a transmission line and a modified ground plane with three meander-line ring defected ground structures (DGS). The proposed microstrip filter fabricated on a Rogers RT/Duroid 5880 substrate with a relative dielectric constant of 2.2 and has a very small size of 10×15×0.635 mm3