Transformations of Coupling Matrix for Multi-band Filtering Networks Referenced to Frequency Bands
Abstract
This paper presents a linear transformation for converting a coupling matrix of a multi-band filtering network with reference to the entire multiple frequency band to that referenced to the frequency band of the corresponding channel filter. The derivation process starts with the admittance matrix of the nodal equation. Using the invariance principle of the admittance matrix in the passband domain and appropriate Taylor series approximations, a simple mapping relation is found with excellent numerical verification.
Fields of Study & Subjects
Microwave Engineering and Waveguides
Analog and Mixed-Signal Circuit Design
Digital Filter Design and Implementation
Publication details
- Journal / source
- IEEE International Microwave Filter Workshop (IMFW)
- Pages
- 1–3
- Publication date
- 7 February 2026
- Language
- EN