The z-plane
3.1 CHAPTER PREVIEW
We start this chapter with a review of the s-plane, a concept with which you are probably familiar. We will then move on to its discrete equivalent – the z-plane. The z-plane has an extremely important role to play in the design and analysis of discrete systems. The significance of z-plane pole–zero diagrams will be discussed, both in terms of signal shapes and system frequency response. The link between the s-plane and z-plane will also be examined.
3.2 POLES, ZEROS AND THE s-PLANE
It is very likely that you have already encountered the ‘s-plane’. If so, you will appreciate how useful this concept is when it comes to the analysis and design of analogue systems. In a similar way, the z-plane is an invaluable ...
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