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Article Dans Une Revue IEEE Transactions on Microwave Theory and Techniques Année : 2024

Synthesis and Implementation of Multiband SIW Bandpass Filters Based on In-Line Topology

Résumé

This article presents a similarity transformation method for multiband bandpass filters (MBPFs) to convert the star-like topology into the in-line topology. A general theoretical technique is introduced, which replaces the traditional step-by-step extraction of LC circuit through filter synthesis with the similarity transformation rotation of coupling matrix, addresses the round-off errors in the parameter extraction process, and improves the accuracy of the theoretical synthesis results. The application of in-line topology significantly enhances the flexibility of filter design, reduces circuit complexity, and simplifies the fabrication of high-order MBPFs. Based on the substrate integrated waveguide (SIW) technology, a series of examples, including tri-band, quad-band, and particularly the first reported quint-band third-order Chebyshev SIW bandpass filters, is designed and implemented. Good agreement is achieved between simulated responses and measured results, validating the designed filter models and the proposed theoretical method.
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hal-04596444 , version 1 (02-07-2024)

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Yu Zhan, Yi Wu, Erwan Fourn, Philippe Besnier, Kaixue Ma. Synthesis and Implementation of Multiband SIW Bandpass Filters Based on In-Line Topology. IEEE Transactions on Microwave Theory and Techniques, 2024, ⟨10.1109/tmtt.2024.3392890⟩. ⟨hal-04596444⟩
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