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Communication Principles 

1

Smith Chart

College of Electronics Engineering

Smith Chart

Communication Principles 

2

College of Electronics Engineering

For complex transmission line problems, the use of the formula 
becomes increasingly difficult and inconvenient. 

Smith Chart


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Communication Principles 

3

College of Electronics Engineering

Smith Chart

Communication Principles 

4

College of Electronics Engineering

Smith Chart


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Communication Principles 

5

College of Electronics Engineering

Smith Chart

Communication Principles 

6

College of Electronics Engineering

Smith Chart


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Communication Principles 

7

College of Electronics Engineering

Smith Chart

Communication Principles 

8

College of Electronics Engineering

Smith Chart


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Communication Principles 

9

College of Electronics Engineering

Smith Chart

Communication Principles 

10

College of Electronics Engineering

Smith Chart


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Communication Principles 

11

College of Electronics Engineering

Smith Chart

Communication Principles 

12

College of Electronics Engineering

Example :On the simplified Smith chart, locate the following 
normalized impedances:

Smith Chart


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Communication Principles 

13

College of Electronics Engineering

Smith Chart

Communication Principles 

14

College of Electronics Engineering

Smith Chart

0.25 

0  , 0.5 


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Communication Principles 

15

College of Electronics Engineering

Smith Chart

Communication Principles 

16

College of Electronics Engineering

Smith Chart


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Communication Principles 

17

College of Electronics Engineering

Smith Chart

(To generator)

Communication Principles 

18

College of Electronics Engineering

Smith Chart

d = 0.1793 

The position of the 
input impedance 
Z(d)

= 0.1793  + 0.18 

= 0.3593 


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Communication Principles 

19

College of Electronics Engineering

Smith Chart

Communication Principles 

20

College of Electronics Engineering

Smith Chart

d

max

= 0.25  - 0.1793

= 0.707 

d

min

= 0.25  + 0.707 

= 0.3207 

0.25 

0.5 


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Communication Principles 

21

College of Electronics Engineering

Smith Chart

d

max

= 0.25  + 0.1793

= 0.4293 

d

min

= 0.5  - 0.3207  = 

0.1793 

0.25 

0.5 

Communication Principles 

22

College of Electronics Engineering

Smith Chart


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Communication Principles 

23

College of Electronics Engineering

Smith Chart

Communication Principles 

24

College of Electronics Engineering

Smith Chart


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Communication Principles 

25

College of Electronics Engineering

Smith Chart

Communication Principles 

26

College of Electronics Engineering

Smith Chart


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Communication Principles 

27

College of Electronics Engineering

Smith Chart

Communication Principles 

28

College of Electronics Engineering

Smith Chart


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Communication Principles 

29

College of Electronics Engineering

Smith Chart

Communication Principles 

30

College of Electronics Engineering

Smith Chart


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Communication Principles 

31

College of Electronics Engineering

Smith Chart

Communication Principles 

32

College of Electronics Engineering

Smith Chart


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Communication Principles 

33

College of Electronics Engineering

Smith Chart

Thank you




رفعت المحاضرة من قبل: Younis Rahema
المشاهدات: لقد قام 4 أعضاء و 154 زائراً بقراءة هذه المحاضرة








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