Design of a Quint-Band Bandpass Filter Based on Multi-Mode Resonator

In this paper, a novel type of compact quint-band bandpass filter is proposed, which is modeled and simulated by using Ansys HFSS software. The simulation result shows that the BPF operates at 1.8/3.3/4.5/5.5/6.2 GHz with 3dB fractional bandwidths of 3.3/9.8/3.4/3.2/2.1% respectively, which meets the demands of Global Positioning System (GPS), World Interoperability for Microwave Access (WiMAX) and 5th generation mobile networks (5G). This proposed filter has the minimum insertion losses of 2.6/0.8/1.9/2.5/2.9 dB and the return losses of 13/13/31/15/22 dB.