Radio-Frequency Digital-to-Analog Converters

Morteza Alavi received his MSc degree in Electrical Engineering from the University of Tehran, Iran, in 2006. His research is focused on designing power-efficient wide-bandwidth digital RF I/Q transmitters. Morteza received the “Best Student Paper Award– 2nd Place" at 2013 IEEE Radio Frequency Integrated Circuits (RFIC) Symposium” in Seattle, USA. Jaimin Mehta received his PhD degree from The University of Texas at Dallas. His research focused on digitally-intensive polar transmitters. He is currently working as a staff design engineer at Cirrus Logic in Austin, Texas. Before becoming a university professor in 2009, Robert Bogdan Staszewski was a design engineer / industrial researcher for over 18 years, working in microelectronics and communication systems. He concentrated on large system-on-chip (SoC) designs for wireless applications and before that was involved in analog, RF, mixed-signal and digital designs. His approach is always to discover novel solutions that offer clear advantages over existing designs. His commitment to innovation and quality has resulted in him developing tens of full-custom mixed-signal complex IC chips. He is an IEEE Fellow for his contributions to the digital RF communications systems.

1. Introduction2. Digital Polar Transmitter Architecture3. Digital Baseband of The Polar Transmitter4. RF Front-End (RFDAC) of the Polar Transmitter5. Situation Measurement Results of the Polar Transmitter6. Idea of All-Digital I/Q Modulator7. Orthogonal Summation: A 2x3-Bit All-Digital I/Q RF-DAC8. Towards High-Resolution RF-DAC: The System Design Perspective9. Differential I/Q DPA and Power Combining Network10. A Wideband 2x13-Bit All-Digital I/Q RFDAC11. Measurement Results of the 2x13-Bit I/Q RFDAC12. Conclusions

Appendix A. Polar TransmitterAppendix B. I/Q RFDAC