The JMD57 is a satellite communication module featuring small form‑factor, high reliability and stable performance. It adopts a compact SMD package of 22×12×1.8 mm, which greatly eases dimensional design constraints for end products and meets various miniaturized integration requirements. Fully supporting China Telecom Tiantong satellite frequency bands, the JMD57 adopts a highly‑integrated main chip plus streamlined peripheral architecture. Users can rapidly enable satellite communication functions with only simple matching external circuits.