Discuss the below:
Q: The problem investigates the nonlinear distortion introduced by a MOSFET amplifier. Let the signal vgs be a sine wave with amplitude Vgs, and substitute vgs = Vgs sin ωt. Using the trigonometric identity sin2 θ ½- ½ cos2θ, show that the ratio of the signal at frequency 2ω to that at frequencyω, expressed as a percentage (known as the second-harmonic distortion) is
Second harmonic distortion=(Vgs/4Vov)*100
If in a particular application Vgs is 10 mV, find the minimum overdrive voltage at which the transistor should be operated so that the second-harmonic distortion is kept to less than 1%.