8.5 Conclusions

8.5 Conclusions

There are several obstacles which make the implementations of a PA very difficult in CMOS technology. The use of submicron CMOS increases the difficulty of implementation due to technology limitations such as low breakdown voltage and poor transconductance. However, with the trend of lower power transmitters in the next generation, implementation of CMOS PAs with good efficiencies are becoming realistic despite steadily declining FET breakdown voltages.