Frequency response of RC Coupled amplifier

Frequency response of RC Coupled amplifier

Characteristics of a RC coupled amplifier ii low ,middle and  high frequency range is called frequency response curve
This also called log magnitude plot
$f_H→$ upper 3db frequency
$f_L→$ lower 3db frequency
$f_H-f_L→$3db bandwidth
At lower drequency the reactance of $C_c$ is high and gain reduced due to in sufficient coupling .
At high frequency the reactance of $C_o$is small and act as short circuit and reduce gain
At mid frequency $C_c$ reduces and $C_o$ increases ,so gain is constant
GBW(gain bandwidt product)→Amid($F_2-F_1$)