S参数指元器件反射信号和传输信号的特性，因此S参数包含 反射参数，如S11，S22等； 传输参数, S12，S21等。 传输参数指标：插入损耗；带外抑制；带宽；通带内抖动；群延时等； 下面一幅图介绍S11, S12, S21, S22参数。 S参数一直占据着微波理论和技术中最重要的 ...

The Amazon 12.12 Sale is pretty much your last chance to get things delivered before Christmas, guys. To help you put a smile on the faces of everyone who made it to your Nice list this year, here are ...