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Theses

Définition de solutions de filtrage planaires et multicouches
pour les nouvelles générations de satellites de télécommunications

Abstract : This PhD dissertation is about the exploitation of a multilayer technology together with the development of synthesis methods and concepts dedicated to microwave filtering.

The first objective of these investigations was to highlight the capabilities and advantages of multilayer technology in the achievement of passive devices dedicated to space applications. An extreme miniaturization is among the potentialities held dear to the space industry; today, this critical point is still at stake, in particular at the level of passive functions. We will show how the use of 2.5D and 3D specific structures can provide one with attractive solutions, for example, by giving access to higher characteristic impedance and coupling ranges, and by allowing one to overcome many technological obstacles. Particular topologies like « DBR » (Dual Behavior Resonator) and « open-loop » will be examined from the reference specifications of a C-band receiver-integrated filter.

The second target was how to make the most of the proximity couplings appearing in filter topologies based on stubs, especially DBRs, so as to design more efficient filtering structure. It led us to propose a nodal matrix-based synthesis.

Finally, we will show how both goals had to converge through the joint exploitation of DBR topologies and our matrix synthesis tool in a multilayer context. Meeting the increasing demand about device miniaturization and performance enhancement goes through the occurrence of new degrees of freedom in design made possible by the development of multi-level topologies.
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https://tel.archives-ouvertes.fr/tel-00132084
Contributor : Yann Clavet <>
Submitted on : Tuesday, February 20, 2007 - 11:30:25 AM
Last modification on : Friday, October 23, 2020 - 4:48:04 PM
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Yann Clavet. Définition de solutions de filtrage planaires et multicouches
pour les nouvelles générations de satellites de télécommunications. Autre. Université de Bretagne occidentale - Brest, 2006. Français. ⟨tel-00132084⟩

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