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 65 for “"Multiplexer"”.
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Multiplexer Design for a Multi-Array Ultrasonic Imaging System
… ultrasound transducer arrays. A high-voltage multiplexer is designed to allow a 128-signal DAQ to interface with up to eighteen 128-signal arrays in a time-multiplexed manner. The multiplexer is then implemented as part of a novel conformable multi-array ultrasound imaging system. Synthetic …
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A time division multiplexer/demultiplexer for an experimental multiple access lightwave system
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1981.
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Cell loss estimation in an ATM multiplexer loaded with heterogeneous on-off sources
… to estimate the cell loss probability in an ATM multiplexer with heterogeneous traffic sources. We consider an ATM Multiplexer with a finite buffer of size K (cells) and a single link with capacity C (cells/second). Unlike previous work, we approximate the heterogeneous arrival process using a …
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A single supply wide bandwidth 4:1 video multiplexer in an 8 GHz dielectrically isolated complementary bipolar process
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1998.
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Algorithmic Techniques for Logic Synthesis of Low Power VLSI Circuits
… synthesis of sc XOR based circuits (2) low power multiplexer decomposition (3) low power technology decomposition of simple gates under a general delay model (4) low power retiming of sequential circuits under a general delay model. In the first problem we provide a polynomial time algorithm for …
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A NEW CONTROLLED VIDEO FRAME LOSS SCHEME FOR VIDEO TRANMISSION OVER HIGH SPEED NETWORKS
… a new congestion control scheme for a video multiplexer to obtain high video multiplex load with acceptable video quality. This is termed "Controlled Video Frame Loss Scheme" (CVFL) and its implementation is discussed in detail in this thesis. By means of computer simulation, it is shown that …
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On-Chip Multiplexers for Transferable Nanomaterials: Design, Fabrication and Applications
… is a nanomaterial which is transferred onto the multiplexer device, and each transistor in the array can be measured individually. The underlying multiplexer device is fabricated from a GaAs / AlxGa1−xAs heterostructure; nanomaterials successfully incorporated into the multiplexer circuit are …
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Polarization independent microphotonic circuits
… microphotonic circuits is the optical add/drop multiplexer which requires polarization independence to mate to the standard single-mode fiber forming today's optical networks. Herein, we present the results of an effort to circumvent the polarization dependence of a microphotonic add/drop …
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Progress towards GaAs multiplexed single-electron pump arrays
… from the wide-channel electron pump and not the multiplexer. We developed a model to qualitatively explain the origin of rectified current in the wide-channel electron pump devices and investigate the effects of changing the RF frequency and amplitude on the rectified current. Secondly, we …
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A new approach in the transient analysis of ATM multiplexers with bursty sources
… transient analysis of a single server ATM multiplexer, where the arrival process consists of the super-position of the traffic generated by a homogeneous as well as by a heterogeneous set of independent binary Markov sources. We propose a new approach in the derivation of the transient …
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Performance analysis of an ATM network with multimedia traffic: a simulation study
… RT and non-RT traffic, are also proposed at the multiplexer, with non pre-emptive priority service for RT traffic if the queue exceeds a predetermined threshold. If the RT queue continues to grow beyond a second threshold, then all low priority cells (mainly speech) are discarded. This scheme …
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Effective design of multiplexing network for applications in communications satellites
… methodologies. First, the enhanced type of multiplexer has been proven to be able to significantly improve its performances by forming an extra pole in the pass-band of each channel using the existing manifold. For completeness of the design methodology, the design of the enhanced type of …
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Charakterisierung des HELIX-128-Auslesechips für HERA-b
… einem analogen Zwischenspeicher sowie einem Multiplexer, der die auszulesenden Analogdaten zeitlich hintereinander ausgibt. Zusätzlich befindet sich hinter jedem Eingangskanal ein Komparator, der bei überschreiten einer Referenzspannung ein Triggersignal ausgibt. Es wird die Architektur des …
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Linear Analog Front -End Circuits for Fiber -Optic Communication Systems
… and supply voltage requirements. Also, an analog multiplexer provides a wide gain tunability and enhanced linearity. The VGA achieves tunable gain from 2.43 dB to 44.37 dB while being process insensitive; a worst case spurious free dynamic range of 26.46 dB with an output swing of 1.4 Vpp, and …
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Automated Management of Network Slices with Service Guarantees
… bandwidth demand estimator and the network slice multiplexer. The bandwidth demand estimator monitors the traffic of the network slice and outputs the amount of bandwidth currently needed to deliver the desired quality of service. The network slice multiplexer decides which bandwidth demands to …
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Impedance-Based Detection of Tissue Using a Multi-Electrode Device
… The electrodes were interfaced to an 8:1 multiplexer and National Instruments Educational Laboratory Virtual Instrumentation Suite (ELVIS) for measurement control and impedance analysis. The ELVIS system, multiplexer, and electrode device were validated for accuracy with various values of …
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Quality assurance project plan for a ruminant emission measurement system
… The components include: the gas sampling multiplexer for switching between and directing gas samples to the analyzer; six orifice meters for measuring and controlling ventilation rates; six individual chambers, in each of which the head of one animal is placed during monitoring; a Heating, …
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ADVANCED METHODS IN QUANTUM AND REVERSIBLE CIRCUIT SYNTHESIS FOR BOOLEAN AND MULTIVALUED LOGIC.
… nuovi progetti per i decodificatori, i multiplexer e i demultiplexer ternari reversibili quantistici che mirano a ridurre la larghezza del circuito migliorando al contempo le prestazioni complessive, superando così i limiti dei sistemi binari tradizionali. La nostra ricerca include …
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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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Multiplexing cell-cell communication
… intercellular conversations. My design comprises multiplexer and demultiplexer sub-circuits constructed from a total of 12 CRISPRi-based transcriptional logic gates, an acyl homoserine lactone-based communication module, and three inducible promoters that enable small molecule control over the …
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