Synthesis of Dual Behavior Resonator (DBR) Filters With Integrated Low-Pass Structures for Spurious Responses Suppression.
Résumé
This paper deals with a rigorous synthesis of dual behavior resonator (DBR) filters with integrated low-pass filter for spurious response suppression. The basic low-pass filter consists in an L-C-L structure associating two transmission lines and an open-ended stub. After full definition, the synthesis is validated from comparisons between simulation- and experimental-data acquired with some third-order filters designed on alumina substrate.