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What is the relationship between carrier level and second and third order distortions?

April 26, 2017distortions level relationship

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What is the relationship between carrier level and second and third order distortions?

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10 Posted

When measured on a dB versus dB scale, the signal has a slope of 1, second order distortions have a slope of 2 and third order distortions have a slope of 3. This means for every 1 dB change in carrier level the second order distortions change by 2 dB and the third order distortions change by 3 dB. Therefore, carrier to second order distortion (CSO) changes 1 dB for 1 dB change in carrier level and carrier to third order distortion (CTB) changes 2 dB for 1 dB change in carrier level.