Department of Electronics and Nanoengineering

Jussi Ryynänen Group

Aalto University research infrastructure for ECD offers state of the art design tools for integrated circuit design and high-quality measuring tools. Latest nanoscale CMOS technologies enable seamless collaboration with industry partners in research and development of different kinds integrated circuits for data communications and sensor applications. In addition, there is a lot of in-house collaboration with different research groups inside Aalto University, e.g. in the fields of antennas, wireless sensors and wireless communication.

Key activities within the research of prof. Ryynänen include IC design to meet the requirements of modern technology, e.g. 5G radio transmitter, designed for the small fifth generation base stations. The ECD unit attracts serious amount of external funding, mainly from Academy of Finland, the Finnish Funding Agency for Innovation (Tekes), European Union research programs, and various industrial and corporate partners.

Special focus in the group is Advanced architectures for RF radio transceivers research produces innovative solutions to improve the communication capacity and energy efficiency of emerging radio receiver generations. Circuit solutions aim to fully exploit the benefits of modern CMOS scaling by seeking solutions based on digital-intensive and digitally assisted, nonlinearity and interference tolerant RF-circuits.

Group members

Latest publications

Energy-Efficient Cyclic-Coupled Ring Oscillator With Delay-Based Injection Locking

Okko Jarvinen, Vishnu Unnikrishnan, Ilia Kempi, Santeri Porrasmaa, Kari Stadius, Marko Kosunen, Jussi Ryynanen 2022 IEEE Transactions on Circuits and Systems II: Express Briefs

Fully Digital On-Chip Wideband Background Calibration for Channel Mismatches in Time-Interleaved Time-Based ADCs

Okko Jarvinen, Ilia Kempi, Vishnu Unnikrishnan, Kari Stadius, Marko Kosunen, Jussi Ryynänen 2022 IEEE Solid-State Circuits Letters

Leveraging frequency agility of an MIMO antenna cluster with a transmitter IC

Ali Raza Saleem, Rasmus Luomaniemi, Anu Lehtovuori, Kari Stadius, Marko Kosunen, Ville Viikari, Jussi Ryynänen 2022 International Journal of Microwave and Wireless Technologies


Kalle Spoof, Miikka Tenhunen, Kari Stadius, Vishnu Unnikrishnan, Marko Kosunen, Jussi Ryynänen 2022

A 38.5-to-60.5 GHz LNA with Wideband Combiner Supporting Cartesian Beamforming Architecture

Rehman Akbar, Rana A. Shaheen, Timo Rahkonen, Cheung Tze, Kari Stadius, Aarno Parssinen 2021 ESSCIRC 2021 - IEEE 47th European Solid State Circuits Conference, Proceedings

A 3.5-GHz Digitally-Controlled Open-Loop Fractional-N Frequency Divider in 28-nm CMOS

Tze Hin Cheung, Mikko Martelius, Yury Antonov, Rehman Akbar, Jussi Ryynänen, Aarno Pärssinen, Kari Stadius 2021 2020 IEEE International Symposium on Circuits and Systems (ISCAS)

A 5.4-GHz 2/3/4-modulus fractional frequency divider circuit in 28-nm CMOS

Tze Hin Cheung, Jussi Ryynänen, Aarno Pärssinen, Kari Stadius 2021 2021 IEEE International Symposium on Circuits and Systems, ISCAS 2021 - Proceedings

A 100–750 MS/s 11-Bit Time-to-Digital Converter With Cyclic-Coupled Ring Oscillator

Okko Jarvinen, Vishnu Unnikrishnan, Waqas Siddiqui, Teuvo Korhonen, Kimmo Koli, Kari Stadius, Marko Kosunen, Jussi Ryynanen 2021 IEEE Access

Energy-Efficient Array Transmitters Through Outphasing and Over-the-Air Combining

Vesa Lampu, Guixian Xu, Lauri Anttila, Alberto Brihuega, Marko Kosunen, Vishnu Unnikrishnan, Jussi Ryynanen, Mikko Valkama 2021 55th Asilomar Conference on Signals, Systems and Computers, ACSSC 2021

A compact low-power 140-GHz low-noise amplifier with 19-dB gain and 7-dB NF

Kaisa Ryynänen, Kari Stadius, Andreas Hammer, Mikko Varonen, Henrik Forsten, Tero Kiuru, Ville Viikari, Jussi Ryynänen 2021 2021 IEEE International Symposium on Circuits and Systems, ISCAS 2021 - Proceedings
More information on our research in the Research database.
Research database

Jussi Ryynänen 
e-mail: jussi.ryynanen at
tel. +358 50 384 17 20

Postal address:
Department of Electronics and Nanoengineering
Aalto University School of Electrical Engineering
P.O. Box 15500, 00076 Aalto, Finland

Visiting address:
Maarintie 8, 02150 Espoo

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