Search for dissertations about: "2-port"

Found 4 swedish dissertations containing the word 2-port.

  2. 1. Modelling of IC-Engine Intake Noise

    Author : Magnus Knutsson; Mats Åbom; Yves Auregán; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; IC-engine; intake noise; gas dynamics; linear source data; frequency domain; 2-port; losses; air cleaner unit; filter paper; flow; FEM; BEM; charge air cooler; narrow tube; Acoustics; Akustik;

    Abstract : Shorter product development cycles, densely packed engine compartments and intensified noiselegislation increase the need for accurate predictions of IC-engine air intake noise at earlystages. The urgent focus on the increasing CO2 emissions and the efficiency of IC-engines, aswell as new techniques such as homogeneous charge compression ignition (HCCI) mightworsen the noise situation. READ MORE

  4. 2. Modelling of low frequency sound in duct networks

    Author : Stefan Nygård; KTH; []
    Keywords : Duct pipe; System network; Wave-guide; Flow; Sound; Noise; Fluid machine; 2-port; 1-port; Active; Passive; Flow separation; Code; Simulation; Low frequency;

    Abstract : .... READ MORE

  5. 3. Modelling of compact resonators

    Author : Pierre-Luc Regaud; KTH; []
    Keywords : Acoustic; Resonator compact; Fold; End correction; Spiral; Helical; Higher order modes; 2-port; Side-branch; Mode matching; Collocation; Weak formulation; Harmonic;

    Abstract : .... READ MORE

  6. 4. Characterisation of terahertz integrated membrane circuits

    Author : Johanna Hanning; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; waveguide width error; calibration; THz; membrane circuit; TRL; measurement uncertainty; single-flange 2-port; 220–325 GHz; cable flex; WR-03; VNA; S-parameter;

    Abstract : In this thesis a novel measurement setup and thru-reflect-line (TRL) calibration kit for vector network analyser (VNA) measurements at 220 GHz to 325 GHz (WR-03) is presented. Measurements on passive membrane circuit devices under test (DUTs) show improvement in the S-parameters compared to a waveguide integrated membrane circuit setup in previous work, especially in reducing the ripples and increasing repeatability of the measurements. READ MORE