# surface acoustic wave filter

Behind Chang'e‑5’s Success: The Homegrown Technologies That Brought Lunar Soil Back to China

Chang'e‑5’s successful lunar sample return owed as much to specialised, domestically produced components as to mission planning. Radars, SAW filters, crystal oscillators, a microwave rendezvous radar and powered exoskeletons supplied by CASIC’s Second Academy were crucial to launch tracking, signal integrity, timing stability, orbital docking and capsule recovery.