Antenna apparatus for satellite communication

PURPOSE: An antenna device for satellite communication is provided to increase the lifetime of a rotary joint by mutually connecting a signal cable of a fixture with a signal cable of a rotator. CONSTITUTION: A body frame(110) supports an antenna and rotates. A rotating unit is connected to a first signal cable. A rotary fixing unit is connected to a second signal cable. A rotary joint mutually connects the first signal cable with the second signal cable. The rotating unit is rotated by tension generated in the first signal cable. A slip ring rotating unit is adjacent to a rotary joint and is connected to a first power cable. A slip ring(130) mutually connects the first power cable and the second power cable.