High Efficiency Switching Cmos Power Amplifiers for Wireless Communications

A Hysteretic Two-phase Supply Modulator for Envelope Tracking RF Power Amplifiers

In this paper a two-phase supply modulator suitable for envelope tracking power amplifier is presented. The designed supply modulator has the linear assisted switching architecture. Two-phase architecture is used in order to reduce the output switching ripples. The proposed architecture uses hysteretic control instead of pulse width modulation (PWM) which significantly reduces the circuit compl...

- 1 - 107 - 055865 - mm - Wave Silicon Power Amplifiers and

Advancements in semiconductor technology have led to a steady increase in the unity power gain frequency (fmax) of silicon transistors, both in CMOS and SiGe BiCMOS technologies. This, in turn, enables realization of complex monolithic silicon integrated circuits operating at the millimeter-wave (mm-wave) frequency range (typically defined as 30–300 GHz). Prime target applications of silicon mm...

CMOS Power Amplifiers for Wireless Communications

Efficient Transmitters for Wireless Communications in Nanoscale CMOS Technology

Efficient Transmitters for Wireless Communications in Nanoscale CMOS Technology by Debopriyo Chowdhury Doctor of Philosophy in Engineering Electrical Engineering and Computer Sciences University of California, Berkeley Professor Ali M. Niknejad, Chair The last decade has witnessed a tremendous growth in wireless communications. Todays consumers demand wireless systems that are low-cost, power e...

CMOS RF Power Amplifiers for Wireless Communications

iii Populärvetenskaplig sammanfattning v Preface vii Contributions xi Abbreviations xiii Acknowledgments xv