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Define and explain the term 1 dB compression point. What is the significance of this point in relation to the operating point of a TWTA?
written 9.5 years ago by gravatar for teamques10 teamques10 ★ 70k •   modified 9.5 years ago

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Explain why operation near the saturation point of TWTA is to be avoided when multiple carriers are being amplified.

Marks: 6 M, 10 M

Year: Dec 2014, May 2015
satellite communication and network
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written 9.5 years ago by gravatar for teamques10 teamques10 ★ 70k
  • 1 dB compression point is defined a point on the transfer characteristic of TWTA where the actual transfer curve drops 1dB below the extrapolated straight line
  • At low input powers the output input relationship for a TWT is linear. At higher power inputs however, the output power saturates, the point …

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