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 13 of 13 for “"Resonator filters"”.
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Development of waveguide filter structures for wireless and satellite communications
… taking advantage of recent cross-coupled resonator filters theory achievements such as the modular filter design approach using non-resonating nodes and inline extracted pole filters. Therefore, the core of the thesis presents the following stages of work: -- Solution of electromagnetic …
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Material selection and nanofabrication techniques for electronic photonic integrated circuits
… One such device is a bank of microring-resonator filters with precisely spaced resonant frequencies. In this work, a fabrication strategy based on scanning-electron-beam lithography (SEBL) is presented for precisely controlling the resonant frequency of microring-resonator filters. Using …
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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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Integrated optical filters using Bragg gratings and resonators
This thesis provides an in-depth study of optical filters made using integrated Bragg gratings and Bragg resonators. Various topologies for making add/drop filters using integrated gratings are outlined. Each class of devices is studied in detail and the theoretical tools needed for designing the …
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A fast 3D full-wave solver for nanophotonics
… many devices of interest, such as optical ring resonator filters or waveguides, have channels that can not be terminated without generating numerical reflections. Therefore, designing absorbers for these channels is a new problem for integral equation methods, as integral equation methods were …
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Practical realisation of multiband planar filters on multilayer substrates
… research presents the design of planar microwave filters implemented on microstrip multi-layer technology. These should be able to attain and realize specified essential requirements such as multi-band operation, compact size, and without significant deteriorated filter performance in comparison …
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REALIZATION OF TEMPERATURE COMPENSATED ALUMINUM NITRIDE MICRORESONATOR FILTERS WITH BANDWIDTHS BEYOND kt2 LIMIT
… realizing miniature, temperature compensated RF filters with fractional bandwidths of ~1%. This presentation will cover the development of miniature filters based on temperature compensated aluminum nitride microresonators that have fractional bandwidths exceeding the microresonator coupling …
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Design of New, Compact and Efficient Microstrip Filters for 5G Wireless Communications
… decades. New, compact and efficient passband filters with multi-functions and good performance are highly demanded in current and future wireless systems. This has also driven considerable technological advances in reconfigurable/tunable filter and filtering antenna designs. In light of this …
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Design of New, Compact and Efficient Microstrip Filters for 5G Wireless Communications
… decades. New, compact and efficient passband filters with multi-functions and good performance are highly demanded in current and future wireless systems. This has also driven considerable technological advances in reconfigurable/tunable filter and filtering antenna designs. In light of this …
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Surface acoustic wave devices with low loss and high frequency operation
… Two low-loss options are studied, coupled resonator filters for very narrow bandwidth applications and single phase unidirectional transducers (SPUDT) for fractional bandwidths up to about 1%. Both designs can be implemented with one quarter wavelength transducer geometries at operating …
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Effective modeling of advanced filters and multiplexing networks
Microwave filters and multiplexers are widely used in all types of electronic systems. This research focuses on advanced filters and multiplexers for applications in communication satellites with stringent requirements and specifications. Conventional modeling techniques are typically either based …
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Germanium on Silicon Integrated Photonics for the Mid-Wave Infrared
… components such as couplers, splitters, ring resonator filters, and Mach-Zehneder interferometers. Air-clad ring resonators demonstrate narrow-bandwidth filtering with a recorded extinction ratio of >20 dB, full-width half max (FWHM) of 0.7 GHz, and unloaded Q factor of >190,000. Integrated …