How Peaks Cause Spectral Regrowth - Keysight E8267D User Manual

Basic Digital Operation
Using Waveform Clipping
Figure 3-11 Combining the I and Q Waveforms

How Peaks Cause Spectral Regrowth

Because of the relative infrequency of high power peaks, a waveform will have
a high peak–to–average power ratio (see
power amplifier gain is set to provide a specific average power, high peaks can
cause the power amplifier to move toward saturation. This causes
intermodulation distortion, which generates spectral regrowth.
Figure 3-12 Peak–to–Average Power
134
Figure 3-12). Because a transmitter's
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