Sökning: "active load-pull"
Visar resultat 6 - 10 av 12 avhandlingar innehållade orden active load-pull.
6. Characterization of Microwave Transistors for Robust Receivers and High Efficiency Transmitters
Sammanfattning : The next generation of integrated transceiver front-ends needs both robustlow noise amplifiers and high power amplifiers on a single-chip. The AluminiumGallium Nitride / Gallium Nitride (AlGaN/GaN) High Electron MobilityTransistors (HEMT) is a suitable semiconductor technology for this purposedue to its high breakdown voltage and high electron mobility. LÄS MER
7. mm-Wave Data Transmission and Measurement Techniques: A Holistic Approach
Sammanfattning : The ever-increasing demand on data services places unprecedented technical requirements on networks capacity. With wireless systems having significant roles in broadband delivery, innovative approaches to their development are imperative. LÄS MER
8. Modeling Approaches for Active Antenna Transmitters
Sammanfattning : The rapid growth of data traffic in mobile communications has attracted interest to Multiple-Input-Multiple-Output (MIMO) communication systems at millimeter-wave (mmWave) frequencies. MIMO systems exploit active antenna arrays transmitter configurations to obtain higher energy efficiency and beamforming flexibility. LÄS MER
9. 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
10. 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