Fractional-N
Full Member level 1

what is the advantage of defining IP3, why we don't just measure the fundamental & 3rd order component of output and divide them by A and A³ (A:input signal amplitude) respectively.
I mean :apply two input signals of amplitude A and measure the output IM
then since the IM3 is proportional to A³
and fundamental to A we can divide our measurement by A³ and A
obtain two quantities representing the PAs linearity
Why IP3?
I mean :apply two input signals of amplitude A and measure the output IM
then since the IM3 is proportional to A³
and fundamental to A we can divide our measurement by A³ and A
obtain two quantities representing the PAs linearity
Why IP3?