Application of long-life conductive slip rings in satellite communications

Satellite communication refers to the communication between two or more earth stations using artificial earth satellites as relay stations to forward or reflect radio waves. Satellite communication is one of the forms of cosmic radio communication. Satellite communication refers to the communication between two or more earth stations using artificial earth satellites as relay stations to forward or reflect radio waves. Satellite communication is one of the forms of cosmic radio communication. Usually satellite communication is composed of four parts: earth station, communication satellite (the first two are the main components, responsible for satellite sending and receiving), tracking telemetry and command system and monitoring and management system (the latter two provide auxiliary functions, detection satellites, attitude adjustment, etc.), as shown in the figure:

The requirements of satellite communication for equipment are mainly as follows: 

1. The transmission signal should be a wideband, stable and high-power signal

2. It can transmit signals of multiple telephones, telegrams, faxes, high-speed data, television and other services. The performance is stable, reliable, easy to maintain, easy to use, and the maintenance cost should not be too high. As a part of the satellite, the future of the slip ring is also immeasurable. Due to the special working environment of the satellite, the slip ring must be able to withstand high and low temperatures, and a satellite can only be returned to the ground after 20 years of work in its orbit, and the slip ring used in the satellite must have the characteristics of long life and maintenance-free. In addition, the frequency and quality of slip ring signal transmission in satellites with communication functions such as "Vostok III" are also very important points in the selection process.

Therefore, Jiujiang Hantang Optoelectronics focuses on the development of long-life conductive slip rings. At present, our 150 million rpm life of conductive slip rings is one of our three core key products. The main advantages of our long-life conductive slip rings are:        

1. The integrated pouring process independently developed by Hantang has a longer life and more stable performance                

2. Friction pair matching technology independently developed by Hantang: military technology electroplating superhard gold + precious metal gold alloy materials                

3. The dynamic resistance change value is 1-3mΩ, and the signal transmission loss is very low                  

4. High precision (surface finish Ra0.02, dimensional tolerance <0.005mm), small size, compact structure and light weight                  

5. The service life can reach 150 million revolutions, and the performance is stable                  

6. According to different requirements, it can be applied to special fields such as high-speed, strong corrosion environment