Sökning: "modulator"
Visar resultat 1 - 5 av 77 uppsatser innehållade ordet modulator.
1. Focal Spot Optimization Using Spatial Light Modulation and a Phase Retrieval Algorithm
Master-uppsats, Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionenSammanfattning : Aberrations to the wavefront of a laser beam reduce the quality of the focal spot and are generally undesired. This project is aimed at determining the aberrations of laser beams by using a phase retrieval algorithm and to show that it is possible to correct the aberrations with a spatial light modulator to optimize the focal spot. LÄS MER
2. Design of a Differential Cross-Coupled Power LC Oscillator with ASK Modulation
Master-uppsats, Linköpings universitet/Elektroniska Kretsar och SystemSammanfattning : Rapid growth in the field of communications industry has led to newer opportunities and challenges in the design of CMOS based monolithic integrated circuits. ASK modulators are a class of digital modulators which are known for their relative simplicity of implementation for low cost applications in the industrial and biomedical domains. LÄS MER
3. Designing and Evaluating a Delta-Sigma DAC for Hi-Fi Audio : To be used in an FPGA implementation
Master-uppsats, Linköpings universitet/DatorteknikSammanfattning : This thesis describes the design of a digital-to-analog converter using a DeltaSigma modulator. The converter’s purpose is to be used for Hi-Fi audio. The thesis is limited to the digital domain of the converter, which is the digital interpolation filter and digital Delta-Sigma modulator. LÄS MER
4. Design of a 200Gbps externally modulated laser for opto-electronic integration
Master-uppsats, KTH/Tillämpad fysikSammanfattning : Segmented traveling wave electro-absorption modulators (TWEAMs) can provide a modulation speed above 100 Gb/s, which is needed in new optical communication networks. In the EU-project TWILIGHT, KTH continues the design work of TWEAMs in the EU-projects IPHOBAC and HECTO with the aim to design a new optical modulator to be integrated with an electronic layer. LÄS MER
5. Analysis of Different Switching Patterns to Minimize Losses in a Six- Phase Drive for Marine Application
Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)Sammanfattning : Multiphase machines have gained a lot of popularity during the recent years, as they offer certain benefits over their three- phase counterparts. This work investigates the losses of a six- phase drive system for a marine application when supplied by four different switching patterns (also referred to as modulators). LÄS MER