A wideband filtering microstrip-to-microstrip vialess vertical transition on CPW MMR
Funding information: China Postdoctoral Science Foundation, Grant/Award Number: 2019M652893; Guangdong Basic and Applied Basic Research Funding-Regional, Grant/Award Number: 2019A1515110417; National Natural Science Foundation of China, Grant/Award Number: 62001170
Abstract
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.
Open Research
DATA AVAILABILITY STATEMENT
Data sharing not applicable to this article as no datasets were generated or analysed during the current study.
