CHAPTER 5: TRANSFER FUNCTION, BODE PLOT, AND FILTERS

The last chapter apply some of student's understanding knowledge from the previous chapter. For the first part, students are introduced with transfer function, which is the fundamental knowledge to design a filter. Transfer function is a mathematical function relating the output or response of a system such as a filter circuit to the input or stimulus.

Then, students are introduced with bode plot. Unlike normal plot, bode plot uses magnitude in decibel (dB). A Bode Plot is actually a useful tool that shows the gain and phase response of a given LTI system for different frequencies.Bode Plots are generally used with the Fourier Transform of a given system. An example of a Bode magnitude and phase plot set.

After learning both two things above, students will start learning about filters. In signal processing, a filter is a device or process that removes some unwanted components or features from a signal. Filtering is a class of signal processing, the defining feature of filters being the complete or partial suppression of some aspect of the signal. In this course, two type of filters will be discussed which is Chebyshev filter and buttherworth filter.