Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"Waveguide Filters"”.
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Analysis and Design of Low-Cost Waveguide Filters for Wireless Communications
… research of this thesis is built around advanced waveguide filter structures. Waveguide filters and the waveguide technology in general are renowned for high power capacity, low losses and excellent electromagnetic shielding. Waveguide filters are important components in fixed wireless …
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Additive manufacturing of novel metal microwave components for space application
This thesis presents the design of novel waveguide components, including filters and antennas specifically adapted to Additive Manufacturing (AM). The design freedom of 3-D printing allows passive components to have various advantages, such as enhanced performance, reduced weight and size, …
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Spatial Mode Filters for Control of Lateral Modes in High Power Semiconductor Lasers
… Several concepts for modifying the lateral waveguide to create filtering of the lateral modes are examined, including the use of waveguide bend loss, waveguide frustration, and the addition of scattering loss. Each of the concepts tested improves the stability of the beam and prevents the …
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Analysis of Waveguides Filled with Uniaxial Media and Metamaterials for Filter Applications using the Mode Matching Method
<p>This dissertation will explore the analysis of waveguide discontinuities for the purpose of dielectric filled waveguide filter analysis and design. The filling media studied are uniaxial media and uniaxial media embedded with metamaterial. A literary search provides numerous methods and …
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Topology optimization of metamaterials and applications to RF component design
… monopole antennas, ultra-compact broadband waveguide filters, and widely tunable resonant structures that are easy to fabricate and at a low cost are presented.
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Compact microwave filter designs based on cavity resonators
Cavity resonators are widely used in microwave filters and multiplexers due to their high quality factor and high power handling capability. Compact designs of these filters are important for practical applications, as they are generally bulky. In this thesis, two types of compact microwave filter …
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Gap Waveguide Array Element Filters
… of devices operating at the frequency range. Gap waveguides are a type of waveguide implemented in a periodic metamaterial that offer several critical advantages over standard waveguides, especially with regards to manufacturability. This research provides the design and analysis of three gap …
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Silicon-based tunable optical filters
… of a new class of silicon-based tunable optical filters. For this purpose a Fabry-Perot structure was chosen and implemented as a thin-film interference filter. The filter layers were configured as a self-supporting square membrane with side lengths of a few hundred microns. The approach …