Transmission lines
Ed da Silva
2.2.1 Introduction
At this stage, I would like to prepare you for the use of the software program called PUFF. PUFF (Version 2.2.1) is very useful for matching circuits, and the design of couplers, filters, line transformers, amplifiers and oscillators. Figure 2.2-1 shows what you see when you first open the PUFF program. Figure 2.2-2 shows you how the program can be used in the design of a filter. In Figure 2.2-1 you can see for yourself that to understand and use the program, you must be familiar with Smith charts (top right hand corner) and scattering or ‘s-parameters’ (top left hand corner), transmission lines and the methods of entering data (F3 box) into the program. Within limits, the layout ...
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