OLTF loop gain

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My approach

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What I have done wrong?

  • \$\begingroup\$ see electronics.stackexchange.com/q/449847/152903 \$\endgroup\$ – Solar Mike Jul 24 '19 at 7:21
  • \$\begingroup\$ @SolarMike What the link you referred to goes to an unanswered question. Plz tell above answer \$\endgroup\$ – SUNITA GUPTA Jul 24 '19 at 8:15
  • \$\begingroup\$ The 2nd order TF phase angle in your question is never < -180 deg. \$\endgroup\$ – Chu Jul 24 '19 at 8:16
  • \$\begingroup\$ @Chu so what should be its phase crossover frequency \$\endgroup\$ – SUNITA GUPTA Jul 24 '19 at 8:19
  • \$\begingroup\$ Have you considered that the answer might be in the comment to that linked question? \$\endgroup\$ – Solar Mike Jul 24 '19 at 8:23

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