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Entry  Mon Jul 23 18:07:14 2018, anchal, DailyProgress, ISS, Introduced zero to cancel cavity pole. Mostly final circuit. CRYO_ISS2LoopGainTF.pdfCryo_ISS2_AOMCavity_Schematic.pdfCryo_ISS2_AOMCavity_LTSpiceAnalysis.zip
    Reply  Tue Jul 24 11:04:37 2018, johannes, DailyProgress, ISS, Introduced zero to cancel cavity pole. Mostly final circuit. 
       Reply  Tue Jul 24 14:28:08 2018, johannes, DailyProgress, ISS, Introduced zero to cancel cavity pole. Mostly final circuit. Cryo_ISS3_AOMCavity_Schematic.pdfCryo_ISS3_LISO_Analysis.pdfCRYO_ISS3AOMCavityLisoAnalysis.pdf
    Reply  Tue Jul 24 13:47:48 2018, anchal, DailyProgress, ISS, Introduced zero to cancel cavity pole. Mostly final circuit. Cryo_ISS2_LISO_Analysis.pdfCRYO_ISS2AOMCavityLisoAnalysis.pdf
Message ID: 2215     Entry time: Tue Jul 24 13:47:48 2018     In reply to: 2213
Author: anchal 
Type: DailyProgress 
Category: ISS 
Subject: Introduced zero to cancel cavity pole. Mostly final circuit. 

Here is LISO analysis on the version 2 of this circuit. I'll take Johannes' advice and remove the active filter on stage 3 and move the addition to stage 4 in the next version.

The first file is the transfer function and the input impedance of just the feedback circuit (the 5 stages).

The second file is open loop transfer function of feedback circuit with modeled AOM and Cavity, the input referred noise and the opamps'stability in the closed loop.

Attachment 1: Cryo_ISS2_LISO_Analysis.pdf  56 kB  Uploaded Tue Jul 24 14:50:26 2018  | Hide | Hide all
Cryo_ISS2_LISO_Analysis.pdf Cryo_ISS2_LISO_Analysis.pdf
Attachment 2: CRYO_ISS2AOMCavityLisoAnalysis.pdf  274 kB  Uploaded Tue Jul 24 15:42:27 2018  | Hide | Hide all
CRYO_ISS2AOMCavityLisoAnalysis.pdf CRYO_ISS2AOMCavityLisoAnalysis.pdf CRYO_ISS2AOMCavityLisoAnalysis.pdf
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