A wideband filtering microstrip-to-microstrip vialess vertical transition on CPW MMR

作者：Hu, Kongyi; Jiang, Yan; Feng, Lin-Ping^*; Zhu, Haoshen; Feng, Wenjie; Shi, Weimin; Liang, Jia-Jun; Tang, Wanchun^*

来源：INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING, 2021, 31(4): e22567.

DOI：10.1002/mmce.22567

• CPW resonator
• filtering performance
• MS&#8208
• to&#8208
• MS vialess vertical transition
• slotline resonator

In this paper, a class of wideband filtering microstrip (MS)-to-microstrip (MS) vialess vertical transition is proposed and demonstrated on coplanar waveguide (CPW) multi-mode resonator (MMR) formed on their common ground plane. Then, resonant mode in the proposed CPW MMR can be properly excited by setting a certain offset distance between two feeding points, which realizes good signal transmission between the top- and bottom-layer MS lines over a wide frequency range. After that, to facilitate the design process, a synthesis design method is introduced for application in design of the proposed MS-to-MS vialess vertical transition with the prescribed design specifications. Finally, by virtue of the proposed CPW resonator, one design example, that is, a four-pole wideband filtering MS-to-MS vialess vertical transitions, are designed, fabricated, and measured. The expected responses, simulated results and measured results of the proposed four-pole MS-to-MS vialess vertical transition is in reasonably good agreement with each other, thus firmly validating the claimed superior performance of the proposed MS-to-MS vialess vertical transition on MMR.

• 单位
  玉林师范学院