Brief overview of host organizations, contents and topics to be covered during the course.
Basic concepts about microwave filters, commonly used space filter and multiplexer technologies, and filter applications in satellites. Introduction to filter analysis, design and manufacturing issues.
Microwave filters and multiplexing networks are frequently found in different space applications: Telecommunication, Navigation, and Earth Observation satellites. In this talk an overview of requirements for passive microwave hardware used in all these payloads will be performed. Broadband and Broadcast Satellite System payload architectures will be analysed and the derived requirements for...
System overview and practical tradeoffs (industry experience view) requested for microwave filtering and multiplexing requirements in satellite communication systems.
Basic concepts related to synthesis techniques of microwave filters (including Cohn’s method).
Presentation of the Coupling Matrix and its use for filter synthesis (first part): The N and N+2 coupling matrices, analysis and synthesis and reduction techniques.
Presentation of the Coupling Matrix and its use for filter synthesis (second part): Symmetrical and asymmetrical responses, reconfiguration of the coupling matrix and common configurations.
Presentation of advanced/novel Coupling Matrix synthesis techniques for microwave filters.
Introduction to advanced EM-based modal analysis techniques (i.e. integral equation technique, and multimode equivalent network representation) of waveguide filters. The design of several practical examples of waveguide filters (e.g. inductive, E-plane, dual-mode, coaxial and dielectric-loaded) for space applications, designed using several EM-based software tools, will be shown. An...
Practical tutorial (based on practical examples) about FEST3D (Full-Wave Electromagnetic Software Tool for 3D Passive Microwave Components) and CST STUDIOSUITE: full-wave EM analysis capabilities, synthesis and design techniques (wide-band directly coupled waveguide filters, low-pass filter structures, dual-mode filters, diplexers and manifold multiplexers).
Introduction to planar and hybrid (Substrate Integrated Waveguide -SIW-, empty SIW -ESIW- and empty SICL -ESICL-) technologies: classical topologies and practical realizations (examples) of microwave filters (with focus on space applications) in planar and SIW technologies (including transitions to planar transmission lines). Filter solutions in alternative empty SIW (ESIW) and empty coaxial...
Presentation of several optimization methods for the practical design of waveguide filters: optimization based on direct-search, gradient-based and evolutionary methods, segmentation technique, aggressive space mapping.
The talk presents the design and practical validation of compact filters based on different technological realizations (SIW and 3D-waveguides). The implementation of transmission zeros by using non-resonant modes in waveguide filters will be presented, and several filter configurations based on SIW technology, empty waveguides and dielectric loaded cavities will be also reviewed.
An introduction (basics) to reconfigurable (tuneable) filters, using mechanical (i.e. screws, movable parts/pieces), electrical (e.g. varactors, ferroelectrics...), and micro-electro-mechanical (MEMs) tuning elements.
Multiplexing Networks: multiplexer configurations, channelizing (input) multiplexing networks, RF combiner (output) multiplexers and design of manifold‐coupled multiplexers.
In recent years, requirements for antenna selective combiners used in base stations for mobile communications have been hardened two-fold as follows: on the one hand, selectivity and insertion loss have become more and more stringent, on the other hand the complexity (in terms of number of filters, ports and number of pass-bands) of such devices has increased beyond the typical duplexer...
A basic introduction to waveguide and coaxial low-pass filters: low-pass prototypes, synthesis and realization of different low-pass filters in waveguide and coaxial technologies.
Advanced and alternative solutions for low-pass and band-pass filters that have been recently developed (by UPNA) in order to enhance its practical usage at the output stage of satellites (in order to cope with very high power and related RF discharge effects).
Fundamentals of EM theory for non-uniform waveguides: Coupled-mode theory and, in particular, the cross-section method. Synthesis using analytical and numerical methods: accurate synthesis methods for the design of microwave devices with smooth profile will be formulated. Moreover, the presented methods are independent of the technology (planar, rectangular waveguide...) and also independent...
Electrical and environmental specifications, performance over temperature, power handling capabilities (terrestrial and space environment), Passive Inter-modulation, size, mass and cost.
Additive Manufacturing (AM) will enable design for performance, mass customisation and easy design changes possible while also massively reducing the design/manufacturing/assembly cycle/costs, as well as providing an environmental friendly alternative to conventional machining, and is considered as key enabling technology for miniaturisation of complex small systems.
AM can suppose a...
A deep review of the acoustic filtering technology will be given.
Basics and physical description of RF discharge (multipaction and corona) and PIM effects will be provided. An overview of all technical and experimental activities that have been (and are being) developed by ESA, and some of them (essentially experimental) in collaboration with VSC, in the area of multipactor, corona and PIM effects for space microwave hardware components.
Practical tutorial (based on practical examples) about capabilities and use of SPARK3D and CST PARTCILES STUDIO: EM-based software tools for accurate analysis of RF high-power effects (multipactor and corona).
A guided tour to the facilities of the European Space Agency Facilities (ESA-ESTEC).
All Speakers/Participants in the course
Final conclusions, questions and answers, end of the course.
