Search for dissertations about: "PAE"
Showing result 11 - 15 of 33 swedish dissertations containing the word PAE.
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11. Silicon Carbide Microwave Transistors and Amplifiers
Abstract : Ibis work deals with silicon carbide (SiC) metal semieonduetor field effect transistors (MESFETs) and microwave amplifiers using them. The wide bandgap (WBG) semiconductors silicon carbide and gallium nitride have a large potential for microwave power generation. READ MORE
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12. Evaluation of Furnishes for Tissue Manufacturing
Abstract : Water removal on a tissue machine becomes progressively more difficult and expensive in each successive zone. Since a big part of the cost is allocated to the drying section, improved water removal in the wet end may lead to huge savings in the manufacturing process. READ MORE
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13. Extending the Bandwidth of the Doherty Power Amplifier
Abstract : The Doherty power amplifier (DPA) is one of the most popular power amplifier (PA) architectures used to obtain high efficiency for modern communication signals having high peak-to-average power ratios. Its often narrowband performance does, however, make it difficult for the DPA to meet the increasing demands of frequency agility in modern wireless communication systems. READ MORE
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14. Theory and Design of Wideband Doherty Power Amplifiers
Abstract : The Doherty power amplifier (DPA) is one of the most popular power amplifier architectures for obtaining high average efficiency for modern communication signals with high peak-to-average power ratios (PAPR). However, the DPA suffers from often having narrowband performance which limits its capabilities in wideband and/or multi-standard microwave and radio frequency applications. READ MORE
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15. Fate of phthalic acid esters during digestion of municipal solid waste under landfill conditions
Abstract : The objective of this thesis has been to investigate whether anaerobic microorganisms developing in acidogenic and methanogenic landfill environments have the potential to degrade phthalic acid esters (PAEs) and what kinds of intermediates may be formed, assuming PAE degradation. PAEs form a group of compounds widely used in huge amounts worldwide, mainly as plasticiser in PVC-plastics. READ MORE