Search for dissertations about: "cavity noise"

Showing result 1 - 5 of 37 swedish dissertations containing the words cavity noise.

  1. 1. Low phase noise voltage controlled micro- and millimeter wave oscillators

    University dissertation from Chalmers University of Technology

    Author : Stefan Andersson; Chalmers tekniska högskola.; Chalmers University of Technology.; [1998]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; phase noise; FM noise; PM noise; noise; microwave; millimetre wave; mm-wave; radio; RF; oscillator; VCO; 1 f noise; oscillation criteria; resonator; delay line; stabilised; quarts crystal; phase error; microstrip resonator; cavity resonator; dielectric resonator; DR; DRO; surface acoustic wave; SAW; sapphire resonator; whispering gallery mode; YIG sphere; YIG film; fibre optic; Fabry-Perot resonator; device; silicon bipolar transistor; Si BJT; gunn diode; MESFET; HEMT; HFET; PHEMT; HBT; amplitude limiter; automatic gain control; AGC; clipping diode; varactor; anti series; piezo electric; magnetostrictive; terfenol; multiplier; phase locked loop; PLL; frequency discriminator; balanced oscillator; transposed gain; laser;

    Abstract : .... READ MORE

  2. 2. Optimum GaN HEMT Oscillator Design Targeting Low Phase Noise

    University dissertation from Chalmers University of Technology

    Author : Mikael Hörberg; Chalmers tekniska högskola.; Chalmers University of Technology.; [2015]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; GaN HEMT; MMIC; phase noise; low frequency noise; resonator coupling; cavity resonator; reflection oscillator;

    Abstract : The thesis considers design of low phase noise oscillators, given the boundary condition of the used technology. Important conditions are the power handling of the active device, device noise floor, the quality factor of the resonator, bias settings, and low frequency noise. READ MORE

  3. 3. Predictions of Aerodynamically Induced Wind Noise Around Ground Vehicles

    University dissertation from Chalmers University of Technology

    Author : Jonas Ask; Chalmers tekniska högskola.; Chalmers University of Technology.; [2008]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Strömningsmekanik; Fluid mechanics; CAA; LES; Curle; low Mach number; incompressibility; air rush noise; cavity; side mirror; ground vehicle;

    Abstract : Over the last decade wind noise has with few exceptions consistently generated a constant or even growing level of customer complaints to automotive companies world-wide. This can partly be explained by a relatively greater focus on engine, power-train and tire noise combined with a growing need to reduce weight in future cars. READ MORE

  4. 4. Modal Dynamics of Vertical-Cavity Surface-Emitting Lasers

    University dissertation from Chalmers University of Technology

    Author : Johan S. Gustavsson; Chalmers tekniska högskola.; Chalmers University of Technology.; [2003]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Elektroteknik; elektronik och fotonik; Electrical engineering; electronics and photonics; Semiconductor laser; vertical-cavity surface-emitting laser; modeling; dynamics; transverse modes; noise;

    Abstract : In this work, a comprehensive dynamic model has been developed for simulating a novel semiconductor laser type, referred to as the Vertical-Cavity Surface-Emitting Laser (VCSEL). The high-speed behavior was simulated and compared to experiments, where excellent agreement was found. READ MORE

  5. 5. Low Phase Noise GaN HEMT Oscillator Design based on High-Q resonators

    University dissertation from Chalmers University of Technology

    Author : Mikael Hörberg; Chalmers tekniska högskola.; Chalmers University of Technology.; [2017]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; GaN HEMT; low-frequency noise; cavity resonator; phase noise; resonator coupling; MEMS; MMIC; reflection oscillator;

    Abstract : The thesis considers the design and optimization of oscillators targeting low phase noise, given boundary conditions from the technology. Crucial technology figures are power capability, RF noise figure, low-frequency noise and the quality factor (Q-factor) of the resonator. READ MORE