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Conquer Radio Frequency

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3.6 The Smith Chart 145 3.7 Video Tutorials The reader may now wish to watch some illustrative videos which give further insight into the topics explained so far in this chapter. A brief description of the content of these video tutorials is provided below. VIDEO REFERENCE CONTENT 3.1 This video demonstrates how to set up simulations to measure and display the reflection coefficient for a simple circuit of the type shown below. The reflection coefficient for matched ( ) and mismatched terminations ( ) and its variation with the electrical length of the line are shown. The relationship between the polar plot of the reflection coefficient and the impedance Smith chart is also illustrated (Figure 3.6-1, Figure 3.6-2) 3.2 This tutorial revisits reflection coefficient measurements for matched ( ) and mismatched terminations ( and ). It also illustrates the concept of standing waves and how to measure the Voltage Standing Wave Ratio (VSWR) 3.3 This tutorial illustrates the basic principles of operation of a slotted line and how to set up a simulation that may emulate it. It also shows the voltage and impedance profiles along the length of the line in both a matched and mismatched case. 3.4 Time domain reflectometry – part 2. This video tutorial shows how to use the respective simulation file (TDR_video_2_1_and_3_4.emp) to replicate a time domain reflectometer. Pulse propagation and reflection in the case of a line mismatched with finite load impedances which are lower ( ) or greater ( ) than the characteristic impedance of the line, are shown. It is recommended that the readers should try to set up similar simulations to those illustrated in the video tutorials and explore this type of circuits. This will help them gain further insight and perhaps find the answers to any doubts or questions that they may have. l ,θ (l) Conquer Radio Frequency 145 www.cadence.com/go/awr

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