Parabolic torus reflector antenna
A parabolic torus reflector antenna is a quasi-parabolic antenna, where the defining parabola is not rotated around the main transmission axis, but around an axis which stands perpendicular to this axis. Simulsat is a trademark for such antennas designed and manufactured by Antenna Technology Communications.
Source: Wikipedia — Parabolic torus reflector antenna (CC BY-SA 4.0)