噪声系数与其测量
Thermal Noise: (otherwise known as Johnson noise) is the kine
tic
energy of a body of particles as a result of its finite temperature
Ptherm=kTB
Shot Noise: caused by the quantized and random nature of
current flow
Flicker Noise: (or 1/f noise) is a low frequency phenomenon where
the noise power follows a 1/fα characteristic .