lec05

lec05 - h W W h r r eff-+ +-+ + =-e e e EE3113_L5 5 What is...

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
EE3113_L5 1 EE 3113 INTRODUCTION INTO RF CIRCUIT DESIGN Lecture Notes for A-term 1999 LECTURE 5 Prof. R. Ludwig Department of Electrical and Computer Engineering Worcester Polytechnic Institute Worcester, MA copyright © 1999, R. Ludwig Copyright, 1998 © R. Ludwig
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
EE3113_L5 2 Lossless Transmission Line Model • Line representation ) ( ) ( 0 C j G L j R Z w w + + = Characteristic impedance: Note : R, L, G, C are given per unit length and depend on geometry Lossless implies: R = G = 0!
Background image of page 2
EE3113_L5 3 Transmission Line Parameters for different line types 2-wire coax sd p a 1 ) 2 ( 1 a D ch - p m R L G C ) 1 1 ( 2 1 b a + psd parallel-plate )) 2 /( ( 1 a D ch - ps )) 2 /( ( 1 a D ch - pe sd w 2 w d m d w s d w e ) ln( 2 a b p m ) / ln( 2 a b ps ) / ln( 2 a b pe
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
EE3113_L5 4 Microstrip line 1 / ), 4 8 ln( 2 / 0 0 0 < + = h W h W W h Z eff e p e m ] ) / 1 ( 04 . 0 ) / 12 1 [( 2 1 2 1 2 2 / 1
Background image of page 4
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 6
Background image of page 7
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: h W W h r r eff-+ +-+ + =-e e e EE3113_L5 5 What is a voltage reflection coefficient? Z Z Z Z L L +-= Reflection coefficient at the load location ) ( 1 = L Z ) ( 1 -= L Z EE3113_L5 6 Standing Waves ) ( ) ( d j d j e e V d V b b-+ +-= ) 2 / cos( ) sin( 2 ) , ( p w b + = + t d V t d v EE3113_L5 7 Standing wave ratio | | 1 | | 1 | | | | | | | | min max min max - + = = = I I V V SWR SWR is a measure of mismatch of the load to the line SWR=1 (matched) or SWR (total mismatch) match...
View Full Document

Page1 / 7

lec05 - h W W h r r eff-+ +-+ + =-e e e EE3113_L5 5 What is...

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online