Sökning: "circulator"
Visar resultat 1 - 5 av 8 avhandlingar innehållade ordet circulator.
1. Capacity Control of Residential Heat Pump Heating Systems
Sammanfattning : Heat pumps used for space and sanitary hot water heating of residential buildings are increasingly popular in northern Europe. As they compete with other heating equipment and in order to limit the environmental impact of their use, it is very important that heat pumps are energy efficient. LÄS MER
2. Theory and Design of Efficient Active Load Modulation Power Amplifiers
Sammanfattning : The increasing demand for mobile data traffic has put new challenges and requirements for the development of the wireless communication infrastructure. The performance of the RF power amplifier (PA) is, in particular, of great importance, since it is the key building block for microwave transmitters in base stations and radio link equipment. LÄS MER
3. Efficient and Wideband Load Modulated Power Amplifiers for Wireless Communication
Sammanfattning : The increasing demand for mobile data traffic has resulted in new challenges and requirements for the development of the wireless communication infrastructure. With the transition to higher frequencies and multi-antenna systems, radio frequency (RF) hardware performance, especially the power amplifier (PA), becomes increasingly important. LÄS MER
4. Heat control in mesoscopic conductors - exploiting quantum effects and size confinement
Sammanfattning : This thesis deals with a theoretical analysis of heat currents, their exploitation and their control in nanoscale devices. The motivation for this study is twofold. (i) The development of nanoscale devices sets up the basis of many applications ranging from nanoelectronics to quantum technology. LÄS MER
5. Theoretical Investigation on Propagation and Coupling of Nonreciprocal Electromagnetic Surface Waves
Sammanfattning : This thesis aims at revealing the fundamental guiding and coupling properties of nonreciprocal electromagnetic surface waves on magneto-optical or gyromagnetic media and designing novel applications based on the properties.We introduce the background in the first chapter. LÄS MER