Miniaturized W-band Bandpass Filter Using IPD Technology

This work presents the design of a four-order bandpass filter (BPF) for W-band applications using integrated passive device (IPD) technology. A coupling architecture with three configurable transmission zeros is employed to improve the passband selectivity. Additionally, combining folded stub loaded resonators (SLRs) and stacking resonators vertically reduces the overall foot-print of the circuit. The simulation results show that the suggested BPF, which operates at 95 GHz, has a number of benefits including low insertion loss, excellent selectivity, small size, and convenient to be integrated. The compact size and easy integration of the proposed BPF render it a compelling option for upcoming wireless communication systems.