Sökning: "Wave-guide"

Visar resultat 1 - 5 av 6 avhandlingar innehållade ordet Wave-guide.

  1. 1. Wave-guide bands of continuous spectrum

    Författare :Pavel Kurasov; Lunds universitet.; Lund University.; [1989]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Abstract in Russian See paper version.... LÄS MER

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

    Detta är en avhandling från Institutionen för farkostteknik

    Författare :Stefan Nygård; KTH.; [2000]
    Nyckelord :Duct pipe; System network; Wave-guide; Flow; Sound; Noise; Fluid machine; 2-port; 1-port; Active; Passive; Flow separation; Code; Simulation; Low frequency;

    Sammanfattning : .... LÄS MER

  3. 3. Modelling tools for quieter vehicles Waves in poro– and visco–elastic continua

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Martin Östberg; KTH.; [2012]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Vibro-acoutics; poro-elastic; visco-elastic; reduced models; Harmonic expansion; wave guide;

    Sammanfattning : New modelling tools intended to contribute to the development of components for quieter vehicles are developed. The tools are based on continuum models for wave propagation in poro– and visco–elastic media. By using geometric attributes of the studied components, the computational cost may be radically decreased compared to traditional methods. LÄS MER

  4. 4. Transducers for impact force and mechanical impedance based on strain measurement

    Detta är en avhandling från Luleå : Luleå tekniska universitet

    Författare :Karl-Gustaf Sundin; Luleå tekniska universitet.; [1984]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hållfasthetslära; Solid Mechanics;

    Sammanfattning : Transducers for impact force and mechanical point impedance are studied. In both cases the transducers are based on resistive strain measurement. Two prototypes of impact force transducers based on different concepts of mean strain measurement are developed and tested. The results are satisfactory and show that the suggested concepts are suitable. LÄS MER

  5. 5. Threshold and Temperature Characteristics of InGa(N)As-GaAs Multiple Quantum Well Lasers

    Detta är en avhandling från Luleå : Luleå tekniska universitet

    Författare :Göran Adolfsson; [2008]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; GaAs; Semiconductor lasers; molecular beam epitaxy; multiple quantum wells; characteristic temperature; temperature dependence; dilute nitrides; ambipolar diffusion; InGa N As;

    Sammanfattning : Semiconductor lasers emitting in the 1.3 μm regime are of interest for applications in access-networks like fiber-to-the-home and radio-over-fiber systems. Suchfiber optical networks are expected to replace the copper-based access-networks currently in use due to a continuously increasing demand on user bandwidth. LÄS MER