A 60-GHz six-pole quasi-elliptic bandpass filter with novel feeding mechanisms based on silica-based post-wall waveguide

This paper presents a 60-GHz six-pole quasi-elliptic bandpass filter (BPF) realized in silica-based post-wall waveguide (PWW). We also propose a novel feeding mechanism that can control external quality factor. The mechanism has several parameters for the control. The BPF with a 8.1% fractional bandwidth and a 1.1-dB insertion loss at 60 GHz is presented. The dimension of the BPF is 3.6mm by 5.4mm.