Generalized Coupling Coefficient for Filters With Nonresonant Nodes

被引：55

作者：

Macchiarella, Giuseppe ^{[1
]}

机构：

[1] Politecn Milan, Dipartimento Elettr & Informaz, I-20133 Milan, Italy

来源：

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2008年 / 18卷 / 12期

关键词：

Coupling coefficient; filter synthesis; in-line filters; nonresonating node (NRN) filters;

D O I：

10.1109/LMWC.2008.2007694

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this letter, we introduce a generalization of the coupling coefficient definition that applies to filters, including nonresonating nodes. The novel coefficients are evaluated from the synthesized low-pass prototype (suitable formulas are given); they allow an easier prototype de-normalization because no complicated network transformation is requested. Several different solutions with preassigned network parameters can be easily obtained by exploiting the degree of freedom offered by the de-normalized network. Some examples illustrating the use of the new coefficient are given.

引用

页码：773 / 775

页数：3

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