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 20 of 25 for “"Multi Port"”.
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Configurable multi-port radiators
… design methodologies to implementconfigurable multi-port antennas that can provide far more design flexibility. Using a small-scale abstraction of the multi-port network, we develop scalable circuit-level interpretations of the radiators that overcome the need for full-wave design and …
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Novel microwave devices based on multi-port filtering networks
… thesis is based on the novel device concept of Multi-Port Filtering Networks (MPFNs). This is a concept derived from conventional two-port filters to link two or more filters in communication systems. It is interesting to the microwave filtering component designers as it reduces the footprint, …
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Analysis and IC Implement of Digitally Controlled Multi-Port DC -Dc Converters
… In digital controller design, two most important aspects that are covered are: (1) a multi-port single controller and (2) a digital phase modulator. These control techniques cannot be implemented in an analog controller. This shows that certain digital control techniques are suitable for …
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An electrically small multi-port loop antenna for direction of arrival estimation
… estimation or direction finding (DF) requires multiple sensors to determine the direction from which an incoming signal originates. These antennas are often loops or dipoles oriented in a manner such as to obtain as much information about the incoming signal as possible. For direction finding …
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Development of a multi-port DC-DC converter for a magnetically-coupled residential micro-grid
… to develop a residential micro-grid, including multiple renewable energy sources, energy storage, and local loads with multiport power electronic converters capable of bidirectional power flow and intelligent algorithms for power converter and micro-grid controls. A topology of multi-port …
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Application of Multi-Port Mixing for Passive Suppression of Thermo-Acoustic Instabilities in Premixed Combustors
… selected technique utilized fuel injections at multiple, strategically placed axial locations to target and inhibit FAR fluctuations at the dominant resonant mode of the combustor. The goal of this research was to provide an understanding of the mixing response inside a realistic premixer …
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Design, construction and testing of a multi-port permanent magnet synchronous generator for wind power generation
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2026-05-01
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Unilateral and multi-functional RF front-end filtering networks using spatiotemporally modulated resonators arrays
… new communication technologies such as massive multiple-input–multiple-output (MIMO), in-band full-duplex (IBFD), and joint communication and sensing (JCAS) are emerging. These technologies impose stringent demands on radio-frequency front-ends (RFFEs) requiring compact, reconfigurable, and …
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Scheduling and allocation problems in high-level synthesis
… branches; (2) the problem of utilizing multi-port memories in data path synthesis; (3) the problem of integrating the scheduling and allocation steps; and (4) the problem of data path synthesis for testability.
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Characterization of Two -Phase Flow in Microchannels
Aluminum multi-port microchannel tubes are currently utilized in automotive air conditioners for refrigerant condensation. Recent research activities are directed toward developing other air conditioning and refrigeration systems with microchannel condensers and evaporators. Three parameters are …
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The measurement, creation and manipulation of quantum optical states via photodetection
… of the vacuum state, with our observations supporting the quantum mechanical model. We create a new means of describing the detection signatures of multi-port networks of non-photon-number discriminating detectors. Our model includes the practical effects of loss and dark counts. We use this …
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The design and fabrication of a meso scale minimally invasive surgical robot
Minimally invasive robotic Single Port Laparoscopic Surgery (SPLS) is of high importance, due to its ability to reduce operation times, recovery times, postoperative infection rates and improve cosmesis while providing surgeons with greater dexterity and precision than traditional SPLS techniques. …
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Synthesis of coupled resonator circuits with multiple outputs using coupling matrix optimization
Design techniques used for two-port coupled resonator circuits are extended in this thesis to multi-port coupled resonator circuits. Three-port coupled resonator power dividers and diplexers are demonstrated in particular. The design approach is based on coupling matrix optimization, and it allows …
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Improvements in fiber optic coupler fabrication techniques
… for manufacturing fused biconical tapered multi-port multimode couplers with improved uniformity among ports is presented. Improvement in the uniformity of the couplers is achieved by diffusion of the minimum taper region of the coupler. The phenomenon of dopant transport from the core to …
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An integrated generator-rectifier system for high-power AC-DC conversion
… power ac-dc conversion plays an increasingly important role in energy conversion systems, such as wind turbines or electric ship grids. Conventional conversion architectures rely heavily on active rectifiers, which consist of fully-controlled power-electronics switches. These make the system …
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Scalable collective message-passing algorithms
… for torus networks use only one network port, regardless of how many are available. Unlike known algorithms, our algorithms have a small amount of redundant communication. Unlike known algorithms, our algorithms can be reordered so that congestion hinders small messages rather than large, …
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Optimization of modular die design in extrusion process
… and dimensional accuracy are the two most important criteria that specify the productivity and feasibility of the extrusion process which is highly influenced by the flow of aluminum through the deforming die. Therefore, die design is considered as one of the most important characteristics of …
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Design and performance of resonant cavities for communication systems. The theory and performance of resonant cavities for application-, in mobile radio and base-stations in the VHF and UHF bands are investigated.
… usually a cavity resonator of which the most important factors are the Q, insertion loss and resonant frequency. However, a problem which frequently arises with cavity resonators is the accurate determination of these resonant characteristics complicated by the presence of coupling port, …
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X.25 traffic generator
… of the traffic generator, that it should support a number of high speed X.25 lines, a multiprocessor architecture was chosen to cope with the high data throughput. An IBM PC was used as the base system, with several specially designed X.25 cards being installed in its expansion slots. The …
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On the Synthesis of Passive Networks without Transformers
… matrix. The lower bounds are generalised to multi-port networks. Also, a connection is established with continued fraction expansions, with implications for network synthesis. In Part 3, we first present four procedures for the realisation of a general impedance with a transformerless …
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