lec10

lec10 - 2 1 2 1 1 1 j y j z in in − = → = EE3113_L10 4...

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EE 3113 INTRODUCTION TO RF CIRCUIT DESIGN Lecture Notes for A-term 2003 LECTURE 10 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_L10 2 Admittance Transformation (Smith Chart) • impedance representation in Smith Chart 0 Γ ) ( 1 ) ( 1 d d jx r z in Γ Γ + = + = • admittance representation in Smith Chart ) ( 1 ) ( 1 ) ( 1 ) ( 1 1 0 d e d e d d z Y Y y j j in in in Γ Γ + Γ + Γ = = = π 180 degree phase shift
EE3113_L10 3 Transformation

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Unformatted text preview: 2 1 2 1 1 1 j y j z in in − = → + = EE3113_L10 4 Alternative: re-interpretation Instead of rotating the reflection coefficient about 180 degree, we keep the location fixed and rotate the entire Smith Chart by 180 degree. EE3113_L10 5 Re-interpretation leads to ZY-Smith Chart The Smith Chart in its original form is kept for impedance display, but a second Smith Chart is rotated by 180 degree for admittance display....
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lec10 - 2 1 2 1 1 1 j y j z in in − = → = EE3113_L10 4...

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