Wireless communication is a fundamental need in today's information society. While the total global data traffic grows continuously, the mobile portion increases twice as fast. In addition, even higher data rates are necessary for enabling, e.g., high-definition video streaming or mobile gaming. Both requirements put pressure on the efficiency of wireless communication systems since an increasing data rate and data volume consequently induce a higher power consumption and diminish the battery life of mobile powered devices even further. In this work, innovative solutions for radio frequency front-end transmit and receive monolithic microwave integrated circuits with high data rates and a low power consumption are investigated and developed. Based on insights of this thesis, it is believed that MMIC solutions with requirements on, simultaneously, power consumption and RF performance will play an important role in wireless communication and all sorts of other applications.