Title :
Full-wave analysis of circular waveguide horn antennas including the outer wall geometry with an hybrid MM/BCMM method
Author :
Reiter, J.M. ; Arndt, F.
Author_Institution :
Microwave Dept., Bremen Univ., Germany
Abstract :
An efficient hybrid technique is developed for the rigorous analysis of circular waveguide horns including the arbitrarily shaped outer antenna geometry with symmetry of revolution. The mode matching method for stepped waveguide discontinuities is used to model the interior surfaces. The boundary contour mode matching (BCMM) method with spherical wave expansion is employed for the outer region. To show the usefulness of the method, the far field patterns of a conical horn example at 12.5 GHz are calculated and compared with measurements. Excellent agreement also for wide angles and in the back region of the horn is demonstrated.
Keywords :
antenna radiation patterns; circular waveguides; horn antennas; mode matching; waveguide discontinuities; 12.5 GHz; SHF; back region; boundary contour mode matching; circular waveguide horn antennas; conical horn; far field patterns; full-wave analysis; hybrid MM/BCMM method; hybrid technique; interior surfaces; measurements; mode matching method; outer antenna geometry; outer wall geometry; spherical wave expansion; stepped waveguide discontinuities; symmetry of revolution; wide angles; Antenna feeds; Apertures; Geometry; Horn antennas; Mode matching methods; Moment methods; Reflector antennas; Scattering; Surface waves; Transmission line matrix methods;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1996. AP-S. Digest
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
0-7803-3216-4
DOI :
10.1109/APS.1996.549995
