[数据库]：
Springer,  Journal of Communications Technology and Electronics

[标题]：
Influence of the frequency dispersion of resonators’ coupling coefficients on the accuracy of direct-synthesis formulas for microwave filters
[作者]：
V.V. Tyurnev
[链接]：
首次发帖不让贴~~
首次发帖，望高人指导！谢谢！！