COMPUTING

Chapter 1 Basic Electronic Concepts and SignalsMagnitude of Vout/Vin10.90.80.70.60.50.40.30.20.1010 -2 10 -1 10 0 10 1 10 2Frequency in rad/sec (log scale)Half-power pointAs ω→ – ∞,and as ω → ∞,θθ= – atan( – ∞)= 90°= – atan( ∞)= – 90°We will use the MATLAB script below to plot the phase angle θ versus radian frequency ω. Thisis shown on the plot below where, for convenience, we let RC = 1.w=−8:0.02:8; RC=1; argGs=atan(1./(w.*RC)).*180./pi; plot(w,argGs); grid100Phase angle in degrees500-50-100-8 -6 -4 -2 0 2 4 6 8Frequency in rad/sec (linear scale)1−28Electronic Devices and Amplifier Circuits with MATLAB Computing, Second EditionCopyright © Orchard Publications