Design of a wide band pass filter based on transversal signal-interaction concepts

A compact wideband micro strip filter is designed based on the principle of Transversal Signal-interaction Concepts, three line coupler and DGS methods. The filter realized a broadband from 2GHz to 6GHz at the level of S11 at -15 dB, the 3dB Wideband covers from 1.6GHz to 7GHz and the insertion loss is 0.3dB with advantage of high out-of-band rejection and the whole size of the filter only covers 10*20*0.5mm3.