Search for dissertations about: "pulsed transmitters"

Found 4 swedish dissertations containing the words pulsed transmitters.

  2. 1. Class-E Power Amplifiers for Pulsed Transmitters

    Author : MUSTAFA ÖZEN; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; RF-PWM; pulsed transmitters; frequency agility; energy efficiency; Class-E;

    Abstract : Nowadays the main driving parameters for the radio transmitter research are: energy efficiency, frequency re-configurability and integration. Pulsed transmitter architectures have attracted large interest in the recent years due to their potential to meet these demands. READ MORE

  4. 2. Design and Characterization of 1.3-1.6 µm Metamorphic Materials and Lasers on GaAs

    Author : Ivar Tångring; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Semiconductor laser; molecular beam epitaxy; InGaAs quantum well; graded buffer layer; metamorphic heterostructures;

    Abstract : The development of fiber-optical networks for broad-band access is expected to create a huge market for laser transmitters in the 1.3-1.55 µm wavelength range. The existing InP-based lasers have poor temperature stability. READ MORE

  5. 3. Interference in Global Positioning System Signals and its Effect on Positioning and Remote Sensing

    Author : Oscar Isoz; Oliver Julien; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Atmosfärsvetenskap; Atmospheric Science;

    Abstract : GPS and the other GNSS systems (GLONASS, Galileo and Beidou-2/COMPASS) is used to position billions of devices and is saving lives, the environment and money on a daily basis. GNSS enables anyone to determine their own unique global location. READ MORE

  6. 4. Metamorphic Heterostructures and Lasers on GaAs

    Author : Ivar Tångring; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; metamorphic heterostructures; InGaAs quantum well; graded buffer layer; Semiconductor laser; GaAs; molecular beam epitaxy; telecom laser;

    Abstract : The objective of this thesis is to demonstrate the metamorphic growth of heterostructure lasers on GaAs substrates. Many heterostructure devices have their performance limited by the need to grow on lattice-matched substrates. READ MORE