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 9 of 9 for “"Frequency-translation"”.
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Frequency translation method for low frequency variable gain amplification and filtering
… innovative solution to an industry challenge. A frequency translation method is designed to shift low frequency signals to intermediate frequencies in order to utilize higher-frequency components. This solution, appropriate for applications involving 1-10MHz signals, can provide continuously …
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MIMO RADIO-OVER-FIBRE DISTRIBUTED ANTENNA SYSTEM FOR NEXT GENERATION WIRELESS COMMUNICATION
… fibre (RoF) system using double sideband (DSB) frequency translation system is proposed. In such a system, the 2x2 MIMO signals can be transmitted to the remote antenna units (RAUs) from the base station via a single optical link. By using the DSB frequency translation, the original …
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Single-photon frequency upconversion for long-distance quantum teleportation and communication
… generation, single-photon detection, and frequency translation that preserves the polarization quantum state of the photons are essential technologies for long distance quantum communication protocols. This thesis investigates the application of polarization entanglement to quantum …
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A digital signal processing solution for multichannel base stations
… are the multichannel combining algorithm, the frequency translation of the multichannel signal to radio frequency, the Digital to Analogue Conversion (DAC) interface and the wideband ultra-linear power amplifier. This thesis considers the pre-power amplifier stages.
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Application of Femtosecond lasers in confocal and scanning tunnelling microscopy
… apparatus led to the development of a novel high frequency translation stage, allowing a retro-reflector to be periodically oscillated without coupling the vibration into the optical table.
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Improving rational modeling realization for accurate EMT simulations
… transient (EMT) analyses, known as Frequency Warping. This thesis establishes the frequency warping as a fundamental problem that compromises the accuracy of EMT simulations, requiring specific approaches for its mitigation. Initially, the manifestation of frequency warping in the …
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Multifunction Radio Frequency System Design Using Nonlinear Models
Multifunction radio frequency (RF) systems provide a general-purpose hardware platform for designers to implement arbitrary waveform transmission and reception. In this thesis, a multifunction RF transceiver is designed, simulated and tested. The transceiver was designed for radar applications …
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Enhanced Light-Matter Interactions in Complex Photonic Systems
… structure, we show that perturbing the discrete translational symmetry can induce a topological knot in reciprocal space. It enables strong nonlocal coupling between a dark mode and a brighter surface mode, which offers new opportunities for efficient sensing and Raman scattering.</p> …
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Impedance- and spatial-domain aliasing in interference management techniques
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-12-01