<P>Hi,</P><P>Basically, harmonic leakage from PA VCC is the main contributor.</P><P>Ramping table could be the cause, but should be the last concern. </P><P>Too high PA input power neary saturated 1st stage of PA transistors and nonlinearity induced harmonic level may increase.</P>[br]<p align=right><font color=red>+5 RD币</font></p>