This has G(s) = K and so G(jco) = K. The gain is IGOco)l = K and in
decibels this is 20 lg K dB. The phase = 0 ~ if K is positive and-180 ~ ifK
is negative. The form of the Bode plot is shown in Figure 5.8. Thus, for
K = 10 the gain is a constant line of 20 lg 10 = 20 dB and the phase a
constant line of 0 ~