SI9000软件的教程，非常详尽，希望对信号仿真的朋友有用,SI9000 software tutorial, very detailed, I hope the friends of the useful signal simulation

polar si9000破解版，可用到2038年，仅供个人研究参考，不能用于商业。 -Si9000 polar crack version, available to 2038, only for personal research reference, can not be used for commercial.

基于si9000的阻抗控制计算资料，各种类型的微带线阻抗控制计算工具和使用详解(Based on si9000 impedance control calculation data, various types of microstrip line impedance control calculation tools and detailed use)