Browsing by Subject "Power amplifiers"

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  • Innovative laser sources operating around 2 μm 
    Kracht, D.; Sayinc, H.; Yilmaz, S.; Wysmolek, M.; Hausmann, K.; Ottenhues, C.; Wandt, D.; Wienke, A.; Neumann, J. (Amsterdam : Elsevier B.V., 2016)
    We report on a variety of continuous wave and pulsed laser sources based on Thulium- and Holmium-doped materials, emitting in the spectral range around 2 μm. This includes continuous wave Thulium-doped fiber lasers which ...
  • Nd:YVO4 high-power master oscillator power amplifier laser system for second-generation gravitational wave detectors 
    Thies, Fabian; Bode, Nina; Oppermann, Patrick; Frede, Maik; Schulz, Bastian; Willke, Benno (Washington, DC : Soc., 2019)
    Ultrastable high-power laser systems are essential components of the long baseline interferometers that detected the first gravitational waves from merging black holes and neutron stars. One way to further increase the ...
  • On the efficiency of PAPR reduction schemes deployed for DRM systems 
    Moghaddamnia, Sanam; Waal, Albert; Fuhrwerk, Martin; Le, Chung; Peissig, Jürgen (New York : Springer International Publishing, 2016)
    Digital Radio Mondiale (DRM) is the universally, openly standardized digital broadcasting system for all frequencies including LW, MW, and SW as well as VHF bands. Alongside providing high audio quality to listeners, DRM ...
  • Systematic design of output filters for audio class-D amplifiers via Simplified Real Frequency Technique 
    Hintzen, E.; Vennemann, T.; Mathis, Wolfgang (Göttingen : Copernicus GmbH, 2014)
    In this paper a new filter design concept is proposed and implemented which takes into account the complex loudspeaker impedance. By means of techniques of broadband matching, that has been successfully applied in radio ...