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lec9

# lec9 - • rotate reflection coefficient • record...

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EE 3113 INTRODUCTION TO RF CIRCUIT DESIGN Lecture Notes for A-term 2003 LECTURE 9 Prof. R. Ludwig Department of Electrical and Computer Engineering Worcester Polytechnic Institute Worcester, MA 01609 copyright © 2003, R. Ludwig Copyright, 1998 © R. Ludwig

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EE3113_L9 2 Impedance Transformation (Smith Chart) • Reflection coefficient in phasor form L j i r L L e j Z Z Z Z θ | | 0 0 0 0 0 0 Γ = Γ + Γ = + = Γ 0 Γ i r i r in in j j d d jx r z Z d Z Γ Γ Γ + Γ + = Γ Γ + = + = = 1 1 ) ( 1 ) ( 1 / ) ( 0
EE3113_L9 3 Generic Smith Chart computation • Normalize load impedance • find reflection coefficient

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Unformatted text preview: • rotate reflection coefficient • record normalized input impedance • de-normalize input impedance L L z Z → Γ → L z ) ( d Γ → Γ ) ( d z in ) ( ) ( d Z d z in in → EE3113_L9 4 Graphical display EE3113_L9 5 How to create ideal capacitors and inductors with a transmission line? Start of transformation Capacitive domain Inductive domain EE3113_L9 6 Start of transformation...
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• Fall '06
• Scalzo
• Transmission line, Impedance matching, input impedance Zin, Prof. R. Ludwig Department of Electrical and Computer Engineering Worcester Polytechnic Institute Worcester, R. Ludwig

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lec9 - • rotate reflection coefficient • record...

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