A GTD Analysis of the Circular Reflector Antenna Including Feed and Strut Scatter.
Final technical rept. Mar 76-Apr 77,
OHIO STATE UNIV COLUMBUS DEPT OF ELECTRICAL ENGINEERING
Pagination or Media Count:
Recently, the wide angle side lobes of a circular reflector antenna pattern were calculated by the Geometrical Theory of Diffraction and an overall pattern can be obtained from a combination of GTD and aperture integration methods. In this report, the analysis is extended to include the scattering from the feed supports. The feed support scattering is treated using the concept of equivalent current line source. The cylinder scattering model developed in this report gives the effect of strut scattering on the wide angle side lobes of the reflector. The scattering from the feed struts always has its greatest effect near the scattering cones for each strut. These scattering cones usually give rise to a maximum aperture blockage effect in certain off-principal plane patterns. The analysis given here can be used to compute the complete pattern of any arbitrary plane cut for a practical circular reflector antenna system. Author
- Electrical and Electronic Equipment
- Radiofrequency Wave Propagation