Ultra-Wideband Bandpass Filter Using Coupled Line Stubs

Abstract

In this paper a micro strip ultra-wideband (UWB) band pass filter using open and short circuited stubs has been presented. The proposed filter is designed using Four coupled-line stubs three are short stubs and one open stub. The UWB filter is deployed on FR4 Epoxy dielectric substrate with thickness of 0.8mm and the filter occupies 15 × 10mm2. This filter is operating in the whole UWB pass band of 3.05GHz to 10.6 GHz. The design was properly calculated and design simulation was carried out using CST software to verify the performance, it has maximum return loss (S11) at 8.45GHz (-37.28dB) frequency.