rfcn
Member level 2
I've designed a class AB PA with simulated output P1dB=26dBm, but the simulated output IP3 is less than 20dBm. Generally, the IP3 is about 10dB over P1dB value. But the IP3 of my PA is less than P1dB!!
Can anyone explain this?
BTW, the PA is a two stage cascode CMOS amplifier and simulation is done with spectreRF. A sweep PSS is done for P1dB simulation and PSS+PAC is done for IP3 simulation.
Can anyone explain this?
BTW, the PA is a two stage cascode CMOS amplifier and simulation is done with spectreRF. A sweep PSS is done for P1dB simulation and PSS+PAC is done for IP3 simulation.