This chapter concludes the book by highlighting the results obtained with the two different designs involving a linear CMOS RF power amplifier. For the dynamic supply RF power amplifier, subject of Chaps. 2 to 4, the measurement results showed a relative improvement in efficiency of a factor of 1.7 at 5.2 GHz and of 2.2 at 2.4 GHz, when compared with the same amplifier operating with a constant 2.5 V supply voltage. For the frequency-tunable RF power amplifier, subject of Chaps. 5 to 7, simulations results for the complete CMOS solution operating at 3.7 and 5.2 GHz and the experimental data obtained for an hybrid (discrete+CMOS) prototype operating at 200 and 300 MHz, led to the conclusion that a frequency-tunable RF PA based on coupled inductors is a good solution for a multiband PA. The main contributions of this book and ideas for future works on the subjects that it covers are also highlighted.
KeywordsPower Amplifier Match Network Efficiency Enhancement Transformation Factor Variable Capacitor
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