impedance_matching

impedance_matching - ECE145a/218Ca notes, M. Rodwell,...

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ECE145a/218Ca notes, M. Rodwell, copyrighted 2009 ECE 145a / 218 a, notes set 6: Impedance Matching Mark Rodwell University of California, Santa Barbara rodwell@ece.ucsb.edu 805-893-3244, 805-893-3262 fax
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Impedance-Matching: Goals
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ECE145a/218Ca notes, M. Rodwell, copyrighted 2009 Recall: Line Reflections         1 1 where ) ( ) ( : line of beginning At 1 1 where 0) (z ) 0 ( : of end o s o s s gen s s o L o L L L Z Z Z Z V T l z V l z V Z Z Z Z V z V
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ECE145a/218Ca notes, M. Rodwell, copyrighted 2009 Line Reflections and Standing Waves frequency. vary with will voltage load ce. interferen e destructiv to ve constructi from vary will and phase. .. - of - out phase - in from vary will and frequency, Varying ) 0 ( ) ( and ) 0 ( ) ( : line along traveling Waves ) ( ) ( and 0) (z ) 0 ( : s Reflection / 2 / 2 V V e z V l z V e z V l z V V T l z V l z V V z V l j l j gen s s L
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ECE145a/218Ca notes, M. Rodwell, copyrighted 2009 Matching to Eliminate Gain Ripple line on waves standing from resulting ripples Gain lines on waves standing from ripple gain eliminate to is matching - impedance for reason One this will Matching
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ECE145a/218Ca notes, M. Rodwell, copyrighted 2009 Recall: Maximum Power Transfer Theorem otherwise ; iff : Power Load ) quantities (RMS } Re{ 4 / : Generator the from Available Power (Maximum) * 2 AVG L gen L L gen gen avg P P Z Z P P Z V P
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ECE145a/218Ca notes, M. Rodwell, copyrighted 2009 Matching For Maximum Power Transfer AVG L P P obtain we load, the and generator between s) resistance (no network matching * lossless * a adding By sferred. power tran signal increase to is matching - impedance for reason Another
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ECE145a/218Ca notes, M. Rodwell, copyrighted 2009 Matching for no reflection vs. matching for max Power Transfer . same not the are sfer power tran maximum for matching and reflection zero for then , If 0 , Z Z line out 0 , 0 st : case 1 Z Z Z Z gen 0 , 0 nd : case 2 Z Z Z Z gen
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ECE145a/218Ca notes, M. Rodwell, copyrighted 2009 Direct Interstage Matching vs. Matching Each to Z o 0 to each Matching Z Matching Stage - Direct zero. including length, any be can , ) 1 /( ) 1 ( : Note 2 2 , l e e Z Z l j L l j L o line in
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Impedance-Matching: Using Agilent / ADS in "tune" mode as a study tool.
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ECE145a/218Ca notes, M. Rodwell, copyrighted 2009 Use CAD Tool (Agilent) ADS to Explore Matching examples. matching Illustrate : Second ADS. in networks tune how to Show : First program. CAD y graphicall presented easily Matching : Today cises. Chart Exer - Smith Paper - On with tching present Ma : Texts Classic
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ECE145a/218Ca notes, M. Rodwell, copyrighted 2009 Tuning Elements in ADS (1) network matching input an and a MOSFET having circuit, a is here Match" "
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ECE145a/218Ca notes, M. Rodwell, copyrighted 2009 Tuning Elements in ADS (2) .
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This document was uploaded on 12/29/2011.

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impedance_matching - ECE145a/218Ca notes, M. Rodwell,...

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