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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.
This paper presents compact and low-loss bandpass filters (BPFs) with ground-signal-ground interfaces that can easily be integrated with RFICs. The filters are realized by post-wall waveguide fabricated into a silica-substrate for the first time. A 59.11-GHz five-pole BPF with a 3.10% fractional bandwidth and a 2.62-dB insertion loss including input- and output- transitions is presented. Its intrinsic...
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