Measurement of Linearity Linearity is
characterized, measured, and specified by various techniques
depending upon the specific signal and application. The linearityof
RF PAs is typically characterized by C/I, NPR, ACPR, and EVM.
The traditional measure of linearity is the
carrier-to-intermodulation(C/I) ratio. The PA is driven with two or
more carriers (tones) of equal amplitudes. Nonlinearities cause the
production of intermodulation products at frequencie...
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