Title :
Analysis of a strip in a waveguide
Author :
Freeman, Catherine L. ; Butler, Chalmers M.
Author_Institution :
Clemson Univ., SC, USA
fDate :
11/1/1997 12:00:00 AM
Abstract :
An analysis and an experimental study of a strip in a transverse plane of a rectangular waveguide below cutoff are presented. This work is a preliminary step in analyzing a stripline-fed slot antenna array in which each stripline feed is enclosed in a rectangular waveguide below cutoff. A numerical method is developed to solve a “pseudo” mixed-potential integral equation for the current on the strip excited by a delta-gap source at some point along the strip. The Green´s function for dipole sources in the rectangular waveguide is used in the spectral and spatial representations and Shanks´ transform is employed to speed up the convergence of the doubly infinite series. Numerical and experimental results are presented for a monopole fed at one wall of a rectangular waveguide and for a bottom-fed and bottom-loaded strip in a rectangular waveguide
Keywords :
Green´s function methods; antenna feeds; convergence of numerical methods; electric potential; integral equations; monopole antennas; rectangular waveguides; series (mathematics); slot antenna arrays; strip lines; transforms; waveguide theory; Green´s function; Shanks´ transform; bottom-fed strip; bottom-loaded strip; convergence; cutoff; delta-gap source; dipole sources; doubly infinite series; experimental results; mixed-potential integral equation; monopole; numerical method; rectangular waveguide; spatial representation; spectral representation; stripline fed slot antenna array; transverse plane; Antenna arrays; Antenna feeds; Dipole antennas; Green´s function methods; Integral equations; Planar waveguides; Rectangular waveguides; Slot antennas; Stripline; Strips;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
