Chia-Song Wu and Hsing-Chung Liu, Vanung University, Taiwan, ROC; Hsien-Chin Chiu and Yi-Feng Lin, Chang Gung University, Taiwan, ROC

This article presents the performance of a Ka-band bandpass filter (BPF) using a coplanar waveguide (CPW) topology on an Al 2 O 3 substrate. A copper (Cu) metallization was also used in this investigation to improve the characteristics of the filter. The measured results of the BPF, with a...