A wideband filtering microstrip‐to‐microstrip vialess vertical transition on CPW MMR. - Hu, Kongyi; Jiang, Yan; Feng, Lin‐Ping; Zhu, Haoshen; Feng, Wenjie; Shi, Weimin; Liang, Jia‐Jun; Tang, Wanchun (International Journal of RF & Microwave Computer-Aided Engineering, 2021)