Improved Synthesis for the Design of Microwave Filters With a Minimum Insertion-Loss Configuration

Abdallah Nasser (1) , Stéphane Bila (1) , Serge Verdeyme (1) , Fabien Seyfert (2)

1 MINACOM
2 APICS - Analysis and Problems of Inverse type in Control and Signal processing

This paper proposes a synthesis methodology for implementing microwave filters with a minimum insertion-loss configuration when several coupling topologies or coupling matrices are available with the selected technology. The methodology introduces, before dimensioning the distributed prototype, a careful characterization of losses due to individual distributed elements. The next step is to derive a precise equivalent circuit including losses for identifying the optimal configuration in terms of insertion-loss performance. The approach is applied to the synthesis of a dual-band bandpass filter. Best and worst configurations are identified among all the possibilities and the synthesis is validated by analyzing applicable electromagnetic models.

Mots clés: coupling matrices; coupling topologies; dual-band bandpass filter; equivalent circuit; microwave filters; minimum insertion-loss configuration; band-pass filters; equivalent circuits; network topology

Domaines: Autre

Abdallah Nasser, Stéphane Bila, Serge Verdeyme, Fabien Seyfert. Improved Synthesis for the Design of Microwave Filters With a Minimum Insertion-Loss Configuration. IEEE Transactions on Microwave Theory and Techniques, 2008, 56 (9), pp.2086 -2094. ⟨10.1109/TMTT.2008.2002234⟩. ⟨hal-00663495⟩