This article investigates a compact defected ground structured band pass filter design and its analysis. The proposed band pass filter has a low insertion loss and return loss at the resonating frequencies and strongly opposing the unnecessary frequency bands. The simulated results obtained from the finite element method based HFSS tool and the overall performance characteristics with respect to reflection coefficient, transmission coefficient and current distributions are analyzed and presented in this work. The proposed filter is designed on FR4 substrate with dielectric constant 4.4 and thickness 1.6mm.

band pass filter, compact microstrip filter, current distribution, defected ground structure (DGS), insertion loss, reflection coefficient, transmission coefficient.