Simulation of a Gregory-type aplanatic  two-reflector offset antenna

V. A. Kaloshin, E. V.  Frolova
Institute of Radioengineering and Electronics of RAS

Received June 07, 2007 

The results of researches of two-reflector aplanatic Gregorian offset antenna characteristics are given.  The antenna efficiency and radiation patterns are considered as functions of scanning angle using optimization of a feed element position and an orientation. The analysis is based on two successful diffractions of a feed element radiation by small and main dishes in Kirchhoff approximation. Comparison of scan characteristics between symmetrical and offset aplanatic atnennas was performed.