Sökning: "Reverberation chamber"

Visar resultat 6 - 10 av 22 avhandlingar innehållade orden Reverberation chamber.

  1. 6. Evaluation of the Random-LOS Measurement System for Vehicular Communication Applications

    Författare :Madeleine Schilliger Kildal; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Reverberation Chamber; Over-the-Air; Anechoic Chamber; Random Line-of-Sight; Rich Isotropic Multipath; wireless communication; car measurements; throughput;

    Sammanfattning : The automotive industry is progressively closing on the Telecom industry as wireless data connection and transmission become more and more important for vehicles. In both future and present cars, the safety and infotainment systems depend on reliable wireless data transmission. This is especially the case when autonomous cars will reach the market. LÄS MER

  3. 7. Moment Method Analysis of Antennas in Reverberation Chambers and Cylindrical Structures

    Författare :Ulf Carlberg; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; antenna; spectral domain method; reverberation chamber; Ewald summation; moment method; cavity; cylindrical structure; Green s function; absorption cross section;

    Sammanfattning : This thesis is a collection of papers using the method of moments for numerical analysis. The papers can be divided into two main groups; a study of antennas in reverberation chambers and a study of antennas in cylindrical structures.The reverberation chamber is a metal cavity for measuring antennas and other devices. LÄS MER

  4. 8. The Random Line-of-Sight Over-the-Air Measurement System

    Författare :Madeleine Schilliger Kildal; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; random line-of-sight; anechoic chamber; reverberation chamber; over-the-air; vehicular communication; wireless communication; throughput; rich isotropic multipath;

    Sammanfattning : As our society becomes increasingly connected, a growing number of devices rely on wireless connectivity. The type, use and form factor of these devices range from wearables to entire vehicles. Additionally, the fifth generation of wireless communication (5G) introduces new communication bands, also at higher frequencies. LÄS MER

  5. 9. Moment Method Analysis of Antennas in Reverberation Chambers and Cylindrical Structures

    Författare :Ulf Carlberg; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; cavity; spectral domain method; cylindrical structure; Ewald summation; Green s function; absorption cross section; moment method; reverberation chamber; antenna;

    Sammanfattning : This thesis is a collection of papers using the method of moments for numerical analysis. The papers can be divided into two main groups; a study of antennas in reverberationchambers, and a study of antennas in cylindrical structures.The reverberation chamber is a metal cavity for measuring antennas and other devices. LÄS MER

  7. 10. Reverberation Chamber Characterizations for Passive and Active OTA Measurements

    Författare :Chen Xiaoming; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Reverberation chamber (RC) has drawn more and more attention as a multipath emulator over the past decade. It has been used for antenna efficiency measurements. It has also been used to measure diversity gain and multi-input multi-output (MIMO) capacity using multi-port antenna. LÄS MER