Generalized Coupling Coefficient for Filters With Nonresonant Nodes
- 8 December 2008
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Microwave and Wireless Components Letters
- Vol. 18 (12), 773-775
- https://doi.org/10.1109/lmwc.2008.2007694
Abstract
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.Keywords
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