Scanning with a fixed dipole antenna in the rotating cup-shaped reflector

摘要

A scanning cup-dipole antenna (10) comprises a fixed dipole (11) and a dipole feed (17) coupled to the fixed dipole (11). A rotatable antenna cup (22) is disposed around the fixed dipole (11). An antenna rotating apparatus (26) is coupled to the antenna cup (22) and is adapted to rotate the antenna cup (22) relative to the fixed dipole (11).