Sökning: "measurement noise"

Visar resultat 16 - 20 av 364 avhandlingar innehållade orden measurement noise.

  1. 16. Predicting flow-generated noise from HVAC components

    Författare :Oscar Kårekull; Mats Åbom; Gunilla Efraimsson; Joachim Golliard; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; flow noise; noise prediction; HVAC; flödesalstrat ljud; bullerprediktion; HVAC;

    Sammanfattning : More energy efficient fans, i.e. larger sizes running at lower speeds, in Heating Ventilation and Air Conditioning (HVAC) systems decrease the fan noise and increase the importance of flow generated noise in other system components, e.g. LÄS MER

  3. 17. Low-Frequency Noise in Si-Based High-Speed Bipolar Transistors

    Författare :Martin Sandén; KTH; []
    Nyckelord :bipolar junction transistor BJT ; heterojunction bipolar transistor HBT ; silicon-germanium SiGe ; polysilicon emitter; high-frequency measurement; low-frequency noise; noise modeling; hydrogen passivation; voltage controlled oscillator VCO ; pha;

    Sammanfattning : .... LÄS MER

  4. 18. Microwave Transistor Noise Model Extraction Methods and a Non-Contacting Scattering Parameter Measurement Method

    Författare :Jörgen Stenarson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; extraction; S-parameter; noise parameter; vector network analyzer; electro-magnetic probe; microwave; non-contacting testing; transistor noise model; VNA; EM-probe; non-invasive testing;

    Sammanfattning : This thesis has two parts. The first part discuss noise model extraction methods for FETs. The second part describe theory and implementation of a non-contacting S-parameter measurement method. Noise is an important aspect for a circuit designer, because noise generated in the circuit is a sensitivity limiting factor. LÄS MER

  5. 19. Measuring quantum systems with a tunnel junction

    Författare :Joachim Wabnig; Jörgen Rammer; Ulrich Eckern; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; quantum mechanics; quantum measurement; tunnel junction; qubit; nanomechanics; noise; Physics; Fysik;

    Sammanfattning : This thesis is concerned with employing the statistics of charge transfer in a conductor as a tool for quantum measurement. The physical systems studied are electronic devices made by nanoscale manufacturing techniques. In this context quantum measurement appears not as a postulate, but as physical process. LÄS MER

  7. 20. Measurement Back-Action and Photon Detection in Microwave Quantum Optics

    Författare :Anton Frisk Kockum; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Parity Measurement; Quantum Measurement; Quantum Optics; Quantum Stochastic Calculus; Circuit QED; Photodetection; Transmon; Dephasing;

    Sammanfattning : In quantum optics, the interaction between atoms and photons is studied. In recent years, microwave quantum optics with superconducting circuits has emerged as an important tool for fundamental quantum optics experiments, and also as a promising way for implementing quantum computation. LÄS MER