A transfer function with a constant factor (K) is the easiest to deal with and has the following characteristics: $$ magnitude = H_{dB} = 20\log_{10}K $$ $$ phase = \phi = 0^{\circ} $$ Both the magnitude and phase are constant with frequency.
Bode Plots:
In the next section we will examine Bode Plots of zeros and poles at the origin.
Continue on to Bode Plots and zeros/poles at the origin...