Essays about: "Envelope Pulse Modulation"

Found 4 essays containing the words Envelope Pulse Modulation.

  1. 1. Towards a setup for narrowband terahertz generation through difference-frequency mixing of chirped ultrashort pulses

    University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

    Author : Isa Clementsson; [2023]
    Keywords : Physics and Astronomy;

    Abstract : Terahertz radiation is a useful tool for inducing lower-energy excitations in matter, where it can be used to cause structural changes through direct interaction with the crystal lattice. Sub-picosecond optical pulses can be used to generate intense broadband terahertz pulses through optical rectification in nonlinear crystals, reaching peak electric fields of several MV/m and conversion efficiencies as high as a few percent. READ MORE

  3. 2. RF Compressor (SLED) Phase-Modulation to Reduce Peak Fields in the MAX IV Linear Accelerator

    University essay from Lunds universitet/Institutionen för elektro- och informationsteknik

    Author : Joel Ekström; [2023]
    Keywords : Accelerator; MAX IV; LINAC; Phase-modulation; SLED; Pulse compression; Technology and Engineering;

    Abstract : Modern particle accelerators need strong electric fields in order to produce high energy particles. Such high voltages are typically reached by injecting pulsed radio frequency power through several steps of amplification. At the end, pulse compression is used to further improve the energy gain at the cost of pulse-length. READ MORE

  4. 3. Pulse Modulated Transmitter Architectures : Carrier Bursting

    University essay from Avdelningen för elektronik, matematik och naturvetenskap

    Author : Jessica Adaid Chani Cahuana; [2012]
    Keywords : Carrier Bursting; Pulse Modulated Transmitter architectures; Envelope Pulse Modulation; Switched resonator;

    Abstract : .... READ MORE

  5. 4. Delta-Sigma Modulation Applied to Switching RF Power Amplifiers

    University essay from Institutionen för systemteknik

    Author : Tobias Andersson; Johan Wahlsten; [2007]
    Keywords : Delta-Sigma modulation; Power Amplifiers; RF; Switching Power Amplifiers;

    Abstract : Background: The task of this thesis is to investigate the possibility of using non-linear high efficiency switching power amplifiers with spectrally efficient varying envelope modulation schemes and, if possible, further investigate such a solution on a high level. The thesis focuses on the theory necessary to understand the technical issues related to power amplifiers and the procedures behind simulating and measuring the characteristics of different power amplifier configurations. READ MORE