# dr. S.M. Alavi

*Assistant Professor*

Electronic Circuits and Architectures (ELCA), Department of Microelectronics

**PhD thesis** (Jun 2014): All-Digital I/Q RF-DAC

Promotor: Bogdan Staszewski, Leo de Vreede

**Expertise:** RF Integrated Circuit

**Themes:**XG - Next Generation Sensing and Communication

### Biography

Morteza S. Alavi was born in Tehran, Iran. He received the B.Sc. and M.Sc. degree in electrical engineering from the Iran University of Science and Technology and University of Tehran, in 2003 and 2006, respectively, and his Ph.D. degree in electrical engineering from the Delft University of Technology (TU-Delft), Delft, The Netherlands in 2014. His main areas of research interest are designing RFIC for wireless and cellular communication systems as well as in the field of CMOS wireline transceivers. He has co-authored Radio-Frequency Digital-to-Analog Converter (Elsevier, 2016).

Mr. Alavi was the co-founder and CEO of DitIQ B.V., a local company that is developing energy-efficient, wideband wireless transmitters for the next generation of the cellular network. Since September 2016, he joined the Electronic Circuits and Architectures (ELCA) research group, TU-Delft, where he is currently a tenured Assistant Professor. Mr. Alavi serves as a reviewer for the Transaction on Microwave Theory and Techniques (MTT) and the Journal of Solid-State Circuits (JSSC). He was the recipient of the Best Paper Award of the 2011 IEEE International Symposium on Radio-Frequency Integrated Technology (RFIT). He was also the recipient of the Best Student Paper Award (2nd Place) of the 2013 Radio-Frequency Integrated Circuits (RFIC) Symposium. His Ph.D. student won the Best Student Paper Award (1st Place) of the 2017 RFIC Symposium held in Honolulu, Hawaii, USA.

### EE1C11 Linear Circuits A

Circuit theory course for first year EE students, Part 1

### EE1C21 Linear Circuits B

Circuit theory course for first year EE students, Part 2

### EE4615 Digital IC Design II

Designing digital CMOS circuit such as frequency dividers and time-to-digital (TDC) circuits

### ET4371 Advanced Wireless Transceivers (Digital RF)

Digital RF/Microwave System, Digital-Passive, All-digital RF synthesizers, transmitters and receivers

### ET4600 Wireless Concepts and Systems

Basic concepts of RF design, such as noise, nonlinearity, Impedance Matching, Analog/Digital Modulation, Pulse-shaping, Mixer, Oscillator, Link-budget, Transmitter/Receiver Architectures

### Digital tRAnSmitTer ICs

This project aims to develop DTX ICs for highly-integrated and energy-efficient mMIMO base stations. (OPEN POSITIONS)

### High Power RF-DAC

This project investigates the next generation of high power RF-DACs and digital intensive receivers

### Energy Efficient Radar TX

In the next years, advanced driver assistance systems (ADAS) are expected to transform cars into securely-connected self-driving robots with the capability of sensing the environment, thinking, and acting autonomously. CRUISE facilitates transforming to this near era.

### Energy Efficient Wideband Transmitter, NXP Partnership ‘Advanced 5G Solutions’

This project providing enhanced average efficiency in wideband wireless transmitters while withstanding the changing load conditions that can occur in handheld devices and MIMO/smart-antenna communication systems.

### smart Everything everywhere Access to content through Small cells Technologies

EAST is focused on the development of Small cell technologies for 5G applications up to 6 GHz

**A Wideband Four-Way Doherty Bits-In RF-Out CMOS Transmitter**

M. Beikmirza, Y. Shen, L. C. N. de Vreede; M. S. Alavi;*IEEE Journal of Solid-State Circuits*,

2021. DOI: 10.1109/JSSC.2021.3105542**A Millimeter-Wave Mutual-Coupling-Resilient Double-Quadrature Transmitter for 5G Applications**

M. Pashaeifar, L. C. N. de Vreede; M. S. Alavi;*IEEE Journal of Solid-State Circuits*,

2021. DOI: 10.1109/JSSC.2021.3111126**14.4 A 24-to-30GHz Double-Quadrature Direct-Upconversion Transmitter with Mutual-Coupling-Resilient Series-Doherty Balanced PA for 5G MIMO Arrays**

Pashaeifar, Masoud; de Vreede, Leo C. N.; Alavi, Morteza S.;

In*2021 IEEE International Solid- State Circuits Conference (ISSCC)*,

pp. 223-225, 2021. DOI: 10.1109/ISSCC42613.2021.9365776**6.2 A 4-Way Doherty Digital Transmitter Featuring 50%-LO Signed IQ Interleave Upconversion with more than 27dBm Peak Power and 40% Drain Efficiency at 10dB Power Back-Off Operating in the 5GHz Band**

Beikmirza, Mohammadreza; Shen, Yiyu; Mehrpoo, Mohammadreza; Hashemi, Mohsen; Mul, Dieuwert; de Vreede, Leo C.N.; Alavi, Morteza S.;

In*2021 IEEE International Solid- State Circuits Conference (ISSCC)*,

pp. 92-94, 2021. DOI: 10.1109/ISSCC42613.2021.9365831**Efficiency and Linearity of Digital "Class-C Like" Transmitters**

Mul, Dieuwert P.N.; Bootsman, Rob J.; Bruinsma, Quinten; Shen, Yiyu; Krause, Sebastian; Quay, Rüdiger; Pelk, Marco J.; van Rijs, Fred; Heeres, Rob M.; Pires, Sergio; Alavi, Morteza; de Vreede, Leo C.N.;

In*2020 50th European Microwave Conference (EuMC)*,

pp. 1-4, 2021. DOI: 10.23919/EuMC48046.2021.9338122**On-Chip Output Stage Design for a Continuous Class-F Power Amplifier**

A. K. Kumaran, M. Pashaeifar, M. D’Avino, L. C. N. de Vreede; M. S. Alavi;

In*2021 IEEE International Symposium on Circuits and Systems (ISCAS), 2021*,

2021. DOI: 10.1109/ISCAS51556.2021.9401788**An 18.5 W Fully-Digital Transmitter with 60.4 % Peak System Efficiency**

Bootsman, R.J.; Mul, D.P.N.; Shen, Y.; Heeres, R.M.; van Rijs, F.; Alavi, M.S.; de Vreede, L.C.N.;

In*2020 IEEE/MTT-S International Microwave Symposium (IMS)*,

pp. 1113-1116, 2020. DOI: 10.1109/IMS30576.2020.9223942**A 1–3 GHz I/Q Interleaved Direct-Digital RF Modulator As A Driver for A Common-Gate PA in 40 nm CMOS**

Shen, Yiyu; Bootsman, Rob; Alavi, Morteza S.; de Vreede, Leo C.N.;

In*2020 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)*,

pp. 287-290, 2020. DOI: 10.1109/RFIC49505.2020.9218324**Bits-In RF-Out Transmitters**

Morteza S. Alavi; Leo de Vreede,;

In*IEEE Radio Frequency Integrated Circuits (RFIC) Symposium Workshop*,

2019.**A Wideband Linear $I/Q$ -Interleaving DDRM**

Mehrpoo, Mohammadreza; Hashemi, Mohsen; Shen, Yiyu; de Vreede, Leo C. N.; Alavi, Morteza S.;*IEEE Journal of Solid-State Circuits*,

Volume 53, Issue 5, pp. 1361-1373, 2018. DOI: 10.1109/JSSC.2017.2786685**Quasi-load insensitive class-E for Doherty and Outphasing Transmitters**

Leo de Vreede; Morteza S. Alavi;

In*IEEE MTT-S International Microwave Symposium (IMS), Workshop*,

2018.**A Wideband I/Q RFDAC-Based Phase Modulator**

Yiyu Shen; Michael Polushkin; Mohammad Reza Mehrpoo; Mohsen Hashemi; Earl McCune; Morteza S. Alavi; Leo C. N. de Vreede,;

In*(accepted RWS 2018).*,

2018.**Bits-In / RF-Out Transmitters for 5G mMIMO**

Leo de Vreede; Morteza S. Alavi;

In*IEEE European Microwave Week (EuMIC) Workshop*,

2018.**A wideband I/Q RFD AC-based phase modulator**

Shen, Yiyu; Polushkin, Michael; Mehrpoo, Mohammadreza; Hashemi, Mohsen; McCune, Earl; Alavi, Morteza S.; de Vreede, Leo C. N.;

In*2018 IEEE 18th Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems (SiRF)*,

pp. 8-11, 2018. DOI: 10.1109/SIRF.2018.8304215**An Intrinsically Linear Wideband Polar Digital Power Amplifier**

Hashemi, Mohsen; Shen, Yiyu; Mehrpoo, Mohammadreza; Alavi, Morteza S.; de Vreede, Leo C. N.;*IEEE Journal of Solid-State Circuits*,

Volume 52, Issue 12, pp. 3312-3328, 2017. DOI: 10.1109/JSSC.2017.2737647**An intrinsically linear wideband digital polar PA featuring AM-AM and AM-PM corrections through nonlinear sizing, overdrive-voltage control, and multiphase RF clocking**

M. Hashemi; Y. Shen; M. Mehrpoo; M. Acar; R. van Leuken; M. S. Alavi; L. de Vreede;

In*2017 IEEE International Solid-State Circuits Conference (ISSCC)*,

pp. 300-301, February 2017. DOI: 10.1109/ISSCC.2017.7870380

document**A fully-integrated digital-intensive polar Doherty transmitter**

Y. Shen; M. Mehrpoo; M. Hashemi; M. Polushkin; L. Zhou; M. Acar; R. van Leuken; M. S. Alavi; L. de Vreede;

In*2017 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)*,

pp. 196-199, June 2017. DOI: 10.1109/RFIC.2017.7969051

document**A wideband linear direct digital RF modulator using harmonic rejection and I/Q-interleaving RF DACs**

M. Mehrpoo; M. Hashemi; Y. Shen; R. van Leuken; M. S. Alavi; L. C. N. de Vreede;

In*2017 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)*,

pp. 188-191, June 2017. DOI: 10.1109/RFIC.2017.7969049

document**An intrinsically linear wideband digital polar PA featuring AM-AM and AM-PM corrections through nonlinear sizing, overdrive-voltage control, and multiphase RF clocking**

M. Hashemi; Y. Shen; M. Mehrpoo; M. Acar; R. van Leuken; M.S. Alavi; L.C.N de Vreede;

In*ISSCC*,

pp. 300-301, Feb 2017.**A wideband linear direct digital RF modulator using harmonic rejection and I/Q-interleaving RF DACs**

Mehrpoo, M.; Hashemi, M.; Shen, Y.; van Leuken, R.; Alavi, M. S.; de Vreede, L. C. N.;

In*2017 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)*,

pp. 188-191, 2017. DOI: 10.1109/RFIC.2017.7969049**A 5.9 GHz RFDAC-based outphasing power amplifier in 40-nm CMOS with 49.2% efficiency and 22.2 dBm power**

Hu, Zhebin; de Vreede, Leo C.N.; Alavi, Morteza S.; Calvillo-Cortes, David A.; Staszewski, Robert Bogdan; He, Songbai;

In*2016 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)*,

pp. 206-209, 2016. DOI: 10.1109/RFIC.2016.7508287**A Wideband 2$\times$ 13-bit All-Digital I/Q RF-DAC**

Alavi, Morteza S.; Staszewski, Robert Bogdan; de Vreede, Leo C. N.; Long, John R.;*IEEE Transactions on Microwave Theory and Techniques*,

Volume 62, Issue 4, pp. 732-752, 2014. DOI: 10.1109/TMTT.2014.2307876**All-Digital I/Q RF-DAC**

S. M. Alavi;

PhD thesis, Delft University of Technology, http://doi.org/10.4233/uuid:fd7dec40-1957-4aad-bb24-90d6f40b5268, 06 2014. Promotor: R.B. Staszewski.**A 2×13-bit all-digital I/Q RF-DAC in 65-nm CMOS**

Alavi, Morteza S.; Voicu, George; Staszewski, Robert B.; de Vreede, Leo C. N.; Long, John R.;

In*2013 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)*,

pp. 167-170, 2013. DOI: 10.1109/RFIC.2013.6569551**All-Digital RF $I/Q$ Modulator**

Alavi, Morteza S.; Staszewski, Robert Bogdan; de Vreede, Leo C. N.; Visweswaran, Akshay; Long, John R.;*IEEE Transactions on Microwave Theory and Techniques*,

Volume 60, Issue 11, pp. 3513-3526, 2012. DOI: 10.1109/TMTT.2012.2211612**A 2-GHz digital I/Q modulator in 65-nm CMOS**

M. S. Alavi; A. Visweswaran; R. B. Staszewski; L. C. N. de Vreede; J. R. Long; A. Akhnoukh;

In*IEEE Asian Solid-State Circuits Conference 2011*,

pp. 277-280, Nov 2011.**Efficient LDMOS device operation for envelope tracking amplifiers through second harmonic manipulation**

M. S. Alavi; F. van Rijs; M. Marchetti; M. Squillante; T. Zhang; S. J. Theeuwen; Y. Volokhine; R. H. Jos; M. P. van der Heijden; M. Acar; L. C. de Vreede;

In*2011 IEEE MTT-S International Microwave Symposium*,

pp. 1-1, June 2011.**Orthogonal summing and power combining network in a 65-nm all-digital RF I/Q modulator**

Alavi, Morteza S.; Staszewski, Robert B.; de Vreede, Leo C. N.; Long, John R.;

In*2011 IEEE International Symposium on Radio-Frequency Integration Technology*,

pp. 21-24, 2011. DOI: 10.1109/RFIT.2011.6141758**Efficient LDMOS device operation for envelope tracking amplifiers through second harmonic manipulation**

Alavi, Morteza. S.; van Rijs, Fred; Marchetti, Mauro; Squillante, Michele; Zhang, Tao; Theeuwen, Steven J.C.H.; Volokhine, Yuri; Jos, H.F.F.; Heijden, Mark P. v. d.; Acar, Mustafa; de Vreede, Leo C.N.;

In*2011 IEEE MTT-S International Microwave Symposium*,

pp. 1-4, 2011. DOI: 10.1109/MWSYM.2011.5972665

## BibTeX support

Last updated: 5 Oct 2021

### Morteza Alavi

- +31 15 27 83826
- S.M.Alavi@tudelft.nl
- Room: HB 18.270
- Personal webpage
- List of publications