Search for dissertations about: "ring-shaped phase center"

Found 2 swedish dissertations containing the words ring-shaped phase center.

  1. 1. Design of hat fed reflector antennas using FDTD

    Author : Jian Yang; Chalmers University of Technology; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; soft and hard surfaces; finite difference time domain FDTD method; sperture efficiencies; Gaussian vertex plate; corrugations; edge corrugations; hat feed antenna; phase center; vertex plate; ring-focus paraboloid; paraboloid; V2D code; ring-shaped phase center; BOR1 antenna; reflector shaping; reflector antenna;

    Abstract : .... READ MORE

  2. 2. Moment Method Analysis of Antennas on Cylindrical Structures by Using G2DMULT and Design of Hat Fed Reflector Antennas

    Author : Jian Yang; Chalmers University of Technology; []
    Keywords : G2DMULT; reflector antenna; paraboloid; dipole; base station antenna; screw heads; vertex plate; self impedance; G1DMULT; ring-shaped phase center; radiation efficiency; FDTD; cylindrical structures; V2D; ring-focus; moment method;

    Abstract : This thesis deals with two aspects of research interest: moment method analysis of antennas on cylindrical structures by using G2DMULT, and design of hat fed reflector antennas. Both of them are two-dimensional (2D) structure problems, one being cylindrical and the other rotationally symmetric. READ MORE