IP3 or Third Order Intercept point

The IP3 is the intercept point of extrapolated, inter-modulated and distorted third harmonic components. It is plotted as Output power vs. Input power.

Plot to show IP3 point calculation

IP3 - 3rd order intercept point.

As shown in the diagram above, the higher the value of IP3 point, the lower is the value of intermodulation product of incoming signals.

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