Developments of microwave HTS-based devices and subsystems for applications in civilian satellites

Different type HTS filters for the applications in satellite microwave receivers have been developed, aiming for space communications and astronomy observations. The HTS filters have been integrated with cryogenic low noise amplifiers and Stirling cryocoolers forming receiver front-end subsystems, which have passed all space qualification environmental tests. The first Chinese space HTS subsystem was taken into space with a civilian experimental satellite for new technology on October 14, 2012. Data received from this satellite show that the HTS filter is working on orbit perfectly. Moreover, an ultra-wide band HTS filter with a notch has been developed for the applications of deep space exploration. A novel K-band receiver with both HTS passive and active devices is under development and is expected to work in the planned space VLBI system by 2020.