EE3113_A2009_L16

EE3113_A2009_L16 - form B B B B B B A A A A A A a b T T T T...

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ECE 3113 INTRODUCTION TO RF CIRCUIT DESIGN Lecture Notes for A-term 2009 LECTURE 16 Prof. R. Ludwig Department of Electrical and Computer Engineering Worcester Polytechnic Institute Worcester, MA 01609 copyright © 2009, R. Ludwig Copyright, 1998 © R. Ludwig
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ECE3113_L16 2 Objectives • What are chain parameters? • What are the basic principles for a flow analysis of a network? • What happens to the S-parameters when the output is not properly terminated?
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ECE3113_L16 3 Working with S-parameters • For network computations it is easier to convert from the S-matrix representation to the chain scattering matrix notation 2 1 22 21 12 11 2 1 a a S S S S b b 2 2 22 21 12 11 1 1 a b T T T T b a . , , 1 21 11 21 21 11 etc S S T S T
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ECE3113_L16 4 • Advantage: cascading just like in the ABCD
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Unformatted text preview: form B B B B B B A A A A A A a b T T T T T T T T b a 2 2 22 21 12 11 22 21 12 11 1 1 ECE3113_L16 5 Signal flow chart computations Complicated networks can be efficiently analyzed in a manner identical to signals and systems and control. in general ECE3113_L16 6 Arrangement for flow-chart analysis G G S V Z Z Z b ECE3113_L16 7 Analysis of most common circuit S b a 1 Determination of the ratio ECE3113_L16 8 Important issue: what happens to the S 11 parameter if port 2 is not properly terminated? L L in S S S S a b 22 21 12 11 1 1 1 Note: Only L = 0 ensures that the S 11 can be measured!...
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EE3113_A2009_L16 - form B B B B B B A A A A A A a b T T T T...

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