resistive_feedback_amplifiers

resistive_feedback_amplifiers - class notes, M. Rodwell,...

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class notes, M. Rodwell, copyrighted 2009 ECE145a / 218a Resistive Feedback Amplifiers Mark Rodwell University of California, Santa Barbara rodwell@ece.ucsb.edu 805-893-3244, 805-893-3262 fax
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class notes, M. Rodwell, copyrighted 2009 Resistive Feedback For Line Termination sfer power tran Maximum 1) matching - impedance for reasons different 2 are there : Recall lines. on waves standing from ripple gain Avoiding 2) s. reflection line eliminate order to in provides feedback , amplifiers feedback resistive In o out in Z Z Z = = gain. maximum r transisto the obtain not do we hence sfer, power tran maximum for designed * not * are These
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class notes, M. Rodwell, copyrighted 2009 World's Simplest Amplifier lines. - nsmission output tra and input to connected tees, bias and r transisto of consists Amplifier d l f amplifier; to external are lines - on Transmissi ends. line at are planes reference
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class notes, M. Rodwell, copyrighted 2009 Analysis arameters nd o . with impedances and gains compute we , parameters - S find To 0 Z Z Z load gen = = implicit. as elements bias DC the Take model. device simplified highly a - now for - Use analyze Circuit to
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class notes, M. Rodwell, copyrighted 2009 Analysis m out Z g V S 0 1 2 2 : inspection By = = 1 / 1 / / 1 11 + = = t o in o in gs in Z Z Z Z S C j Z ω gs Z Z Z gen C Z j V L gen 0 21 1 0 + = = 1 / 1 / 22 + = = o out o out out Z Z Z Z S R ! needs our meet may it matching), (no G lower than is gain Though ? amplifier this with wrong is What max ripple. gain waves standing , large : problem serious More 22 11 S S
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class notes, M. Rodwell, copyrighted 2009 Standing Waves will ends line both at s Reflection : form the of varations gain/phase cause , 1 1 2 L S l j e Γ Γ β equency ith d ngth ble both vary with will gain hence fix this. to need We frequency. with and length cable
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class notes, M. Rodwell, copyrighted 2009 Eliminating Standing Waves thus. .. directly, stages two match directly can we while So, permanent. connection the and short are
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This document was uploaded on 12/29/2011.

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resistive_feedback_amplifiers - class notes, M. Rodwell,...

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