噪声系数通常用于衡量一个电路和或者系统内部噪声大小，它通常用于比较不同电路或者系统噪声性能的好坏。噪声系数的定义如下： A PIN diode only functions just like a rectifier at very low frequencies. At microwave frequencies, the IV curve undergoes a transform, to make sure that it behaves similar to a resistor, whose resistance worth is set by the extent of DC current that is existing durin... https://pindiodeswitch36813.affiliatblogger.com/86230488/top-low-noise-amplifier-secrets