Research on Impedance Matching of Connector Solder Joints Based on 1394 Bus
The connector serves as the connecting carrier for signal interaction and power transmission.In ad-dition to providing convenient connection,the inherent structure and solder joints of the connector cause the discon-tinuity of link impedance,which affects the high-speed signal transmission,resulting in signal deterioration and even transmission distortion.In order to improve the impedance consistency of airborne computer,it is urgent to design the impedance of solder joint and improve the impedance consistency of link through process control.On the basis of studying the principle of impedance matching,this paper extracted the signal link transmission model of airborne computer system with 1394 bus.It was concluded that the solder joint of the connector is controlled to 110 Ω,which could improve the eye map height and width,the qulality of eye map,and facilitate the recognition and receiving of signals.
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