An advanced technology of system-in-package(SIP) was presented for miniaturization of the aero-engine control system's electronic equipments.The circuit design of an aero-engine electronic control system was taken as an example.In the chip

an integrated approach was adopted based on a pile of integrated chips

and internal die pins were led to the connection points on the circuit underlay;then the surrounding was supplemented by printed circuit board;finally a complete electrical system was constituted.Design optimization and signal integrity simulation were implemented for quality control of signals.The test results show that

by use of SIP technology

the circuit board is reduced about 80% in area and 70% in mass as well as the signal quality is satisfied.The research illustrates that the SIP technology becomes one of the development directions of miniaturization and high reliability design of aero-engine electronic control system in the future.