Hello guys, I want to find the 3db upper and lower frequency(Hz) bound for the frequency response of below described code. I have plotted the frequency response(Bandwidth) but how to get the 3db point change. Following is the code of the problem:
clear all clc frequency=[10 50 100 200 500 1*10^3 2*10^3 5*10^3 10*10^3 20*10^3 50*10^3 100*10^3 200*10^3 500*10^3 1*10^6 2*10^6 7*10^6 8*10^6 9*10^6 11*10^6 12*10^6 15*10^6 17*10^6 18*10^6 20*10^6 22*10^6 25*10^6 27*10^6 30*10^6]; %Frequency in Hz
vi=[84 88 92 88 88 88 88 88 88 88 88 88 88 88 88 88 43 43 47 43 43 46 47 47 48 48 43 43 45]; %Input voltage
vo=[109 390 600 770 880 940 960 980 980 960 1010 1010 1010 1010 980 940 370 350 320 290 270 230 210 190 180 170 130 120 110]; %Output voltage
gain=( vo./vi) %Finds the gain for respective voltage values
figure(1) semilogx(frequency,gain) % Plots the frequency response of the system
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