Design and Analysis of Compact UWB BPF using Parallel Coupled Microstrip Line with DGS
This paper presents design and analysis of a simple and compact ultra-wideband (UWB) band-pass-filter using parallel-coupled micro strip line with DGS.A two poles filter is designed by a parallel couple micro strip line. A rectangular defective ground plane is used to enhance coupling between lines i.e. better return loss in UWB range. Simulation of this proposed filter is carried out on CST MWS software, and fabricated using microwave laminate GML 1000 of dielectric constant 3.2 and height 0.762mm with loss tangent 0.001.Measured results are compared with simulation results with good agreement. The electrical equivalent model of this filter is also presented in this paper. The equivalent model of this filter is verified by comparing the frequency response of equivalent circuit of the filter and simulated frequency response of this filter.
