Essays about: "absorption losses"

Showing result 1 - 5 of 24 essays containing the words absorption losses.

  1. 1. Ray Tracing Algorithm for Dielectric Domes

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Maria Pubill; [2023]
    Keywords : Array antenna; dielectric dome; Ray-Tracing; reflection; absorption losses; matching layers; Arrayantenn; dielektrisk kupol; strålföljning; reflektion; absorptionsförluster; anpassningsskikt;

    Abstract : Almost hemispherical scanning capabilities are required for modern wireless communication systems to produce broad coverage without performance degradation. Phased array antennas are commonly used as a fully-electronic beam-steering solution for its rapidity in beam switching. READ MORE

  3. 2. Design of a Dielectric Radome using a Ray-Tracing Model for Satellite Communications

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Flores Espinosa Núria; [2023]
    Keywords : Dielectric radome; Ray tracing; Array antenna; Lens antenna; Satellite communications; Radom dielèctric; Traçat de Rajos; Arranjament d’antenes; Antena de lent; Comunicacions per satèl·lit; Dielektrisk radome; Strålspårning; Gruppantenn; Linsantenn; Satellitkommunikation;

    Abstract : In recent years, there has been a huge increase in the use of satellite communications. This has led to a need for more capacity, which can be solved by moving towards higher frequency bands in search of higher bandwidths. READ MORE

  4. 3. Comparison of RF Heating in ASDEX Upgrade and ITER

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Axel Blennå; Mark Kalldas; [2022]
    Keywords : Fusion; ASDEX Upgrade; ITER; FEMIC; ICRH; eigenmode; beam; wave absorption;

    Abstract : The increased effects of global warming have been a driving force to further research and develop sustainable energy sources, such as fusion. In this study, two different fusion devices are compared in terms of ion cyclotron resonance heating (ICRH)of plasma. The two devices are the tokamaks ASDEX Upgrade and not yet built ITER. READ MORE

  5. 4. Crosslinked Cartonboard - Challenges and possibilities

    University essay from Mälardalens universitet/Akademin för innovation, design och teknik

    Author : Malin Elvin; [2022]
    Keywords : Cartonboard; crosslinking; mechanical properties; SCT;

    Abstract : The need for sustainable packaging is growing, and plastic waste needs to be reduced. A suitable alternative could be fibre-based packaging and cartonboard, and several actions could enhance this alternative. This study investigates crosslinking, a method to create stronger bonds between the OH-groups in the material. READ MORE

  6. 5. Characterization of Silicon Waveguides For Non-Dispersive Infrared Gas Sensors

    University essay from Luleå tekniska universitet/Rymdteknik

    Author : Sarah Zayouna; [2020]
    Keywords : ;

    Abstract : Carbon dioxide is an important gas for life on Earth. But as human activities have been expanding throughout modern history, the CO2 concentration in the atmosphere is increasing. High concentrations of carbon dioxide can lead to various consequences, such as climate change and poor air quality both indoors and outdoors. READ MORE