X/Ka Dual band Dual Circularly Polarized Reflector Antenna System for Deep Space Satellite TT&C and Data Transmission Applications

Design of dual band (X/Ka) dual circularly polarized Reflector antenna system with common phase center for deep space satellite TT&C and data Transmission applications is presented. The antenna consists of a 2 meter Axially Displaced Ellipsoidal (ADE) Reflector with a coaxially fed horn antenna as feed. This antenna is planned for Telemetry, Tracking and Telecommand (TT&C) as well as payload Data transmission application from deep space orbiting spacecraft to ground communication. The performance of simultaneous excitation of X and Ka band antenna feed assembly with ADE reflector is simulated and results show that a very good performance can be achieved in both the bands.