介绍了LVDS（低电压差分信号）的工作原理及电路结构。根据其工作原理和电路结构，结合LVDS的信号特征和数字信号的频域分析，分析LVDS抗电磁干扰的能力和辐射发射，举例估算LVDS的电流环的差模辐射、电流环的共模辐射和开路线的共模辐射。 LVDS的电磁兼容性分析表明LVDS能够适应复杂电磁环境。% The working rinciple and circuit structure of LVDS(low voltage differential signaling)are precented in this pa⁃per. According to the working principle and circuit structure of LVDS,the electromagnetic interference immunity and radiated emission of LVDS are analysed in combination with signal specific property of LVDS and frequency domain analysis of digital singal. Differential mode radiation of current loop,common mode radiation of curren loop and common mode radiation of open circuit line are estimated approximately. Electromagnetic compatbility analysis of LVDS show that it can adapt to complex electro⁃magnetic environment .
展开▼
