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随着卫星遥感领域的迅速发展,高速LVDS(低压差分信号)器件得到了广泛应用。采用LVDS电缆替代同轴电缆传输LVDS信号可有效减轻电缆重量和生产成本。在1Gb/s以上速率信号使用LVDS传输时,电缆组件选型、信号传输波形的最佳化是关键。详细介绍了星载高速差分数据总线电缆组件中电缆和连接器的选型、组件装联质量的控制、电缆组件的信号完整性的测试分析。该星载高速差分数据总线电缆组件在星载高速数据总线系统如获得大量应用,则必将推动我国星载高速数据总线系统的发展。
With the rapid development in the field of satellite remote sensing, high-speed LVDS (Low Voltage Differential Signaling) devices have been widely used. Using LVDS cables instead of coaxial cables to transmit LVDS signals can effectively reduce cable weight and manufacturing costs. When using LVDS signals at speeds above 1Gb / s, optimization of the cable assembly and signal transmission waveforms is key. The paper introduces in detail the selection of cables and connectors, the quality control of the components and the signal integrity analysis of the cable components in the high-speed differential data bus cable components. The satellite high-speed differential data bus cable components in space-borne high-speed data bus system, such as access to a large number of applications, will certainly promote China’s high-speed data-on-board bus system.