Sökning: "Johan Wettergren"

Hittade 2 avhandlingar innehållade orden Johan Wettergren.

1. 1. Cylindrical Waveguide Slot Antenna Analysis

   Författare :Johan Wettergren; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; basis function; mutual admittance; cylinder; MPIE; slot; integral equation; waveguide; antenna; mutual coupling; moment method; EFIE;

   Sammanfattning : Waveguide slot antennas with longitudinal and transverse slots are analyzed using a rigorous method. The antennas are divided into regions, which are analyzed separately and matched by a moment method procedure. At the apertures between the regions, the electric fields are expanded in trigonometric basis functions. LÄS MER

3. 2. Waveguide slot antennas with cylindrical outer structures

   Författare :Johan Wettergren; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; cylindrical structures; arbitrary cross sections; waveguide slots; two-dimensional solutions; slot admittance; cylindrical antennas; moment method; slot antennas; spectral domain; cylindrical geometries;

   Sammanfattning : .... LÄS MER