CAST-Xi'an Institute of Space Radio Technology

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CAST Xi'an is a subsidiary of China Academy of Space Technology (CAST) within China Aerospace Science and Technology Corporation (CASC). It is the Chinese largest supplier of subsystem and equipment for spacecraft. Its activities cover development, design, manufacturing, integration and test of spacecraft payloads, TT&C sub-system, as well as related electronic equipment.
 
CAST Xi'an was initially founded on June 29, 1965. Over the five decades, CAST Xi'an has supplied products at both system level and equipment level for more than 275 spacecrafts for telecommunications, navigation, Earth observation, Moon exploration and Chinese Chang’e, Shen-zhou Spaceflight mission, with its superior technology in the following four fields:
 
Communication and Navigation
CAST Xi'an is the major supplier for Chinese communication satellite payloads; is the supplier for all Beidou-1, Beidou-2 and part Beidou-3 navigation satellite payloads; is the pioneer in Chinese ground and space based TT&C system; is the supplier of the payload for the first Chinese Data Relay satellite.
 
Data Transmission
CAST Xi'an is the key Chinese supplier of high speed data transmission subsystem and equipment for satellites.
 
Space-born Antenna
CAST Xi'an is the top leader of space-born antenna in China.
 
Microwave
CAST Xi'an is the most competitive supplier of microwave equipment for spacecraft in China.
 
CAST Xi'an employs over 2600 people. With space projects and institutional programs, it has achieved revenue of 6.04 billion RMB in 2019.