University of Oulu

A. Sethi, J. P. Aikio, R. Akbar, M. Hietanen, T. Rahkonen and A. Pärssinen, "A 25 GHz Active Phase Shifter Using 10 bit Cartesian Control," 2020 2nd 6G Wireless Summit (6G SUMMIT), Levi, Finland, 2020, pp. 1-5, doi: 10.1109/6GSUMMIT49458.2020.9083742

A 25 GHz active phase shifter using 10 bit Cartesian control

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Author: Sethi, Alok1; Aikio, Janne P.1; Akbar, Rehman1;
Organizations: 1University of Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.4 MB)
Persistent link:
Language: English
Published: Institute of Electrical and Electronics Engineers, 2020
Publish Date: 2020-07-06


This paper presents an active RF phase shifter, targeted towards 5G wireless systems, which uses an IQ vector modulator (IQVM) topology with a 10 bit cartesian codebook. The circuit is designed using 45 nm CMOS SOI technology. To generate the I and Q basis vectors for the IQVM, a tunable polyphase filter with a novel tuning mechanism is used, which allows operation over an octave of a frequency range, from 22 GHz to 40 GHz. The RF bandwidth of the proposed phase shifter is 2.5 GHz and can provide in excess of 8 dB of fine gain control over 360 degrees of phase shift. Active area occupied is 0.2 square millimeter. The total DC power consumed from 1 V supply is 36 mW.

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ISBN: 978-1-7281-6047-4
ISBN Print: 978-1-7281-6048-1
Pages: 1 - 5
DOI: 10.1109/6GSUMMIT49458.2020.9083742
Host publication: 2020 2nd 6G Wireless Summit (6G SUMMIT)
Conference: 6G Wireless Summit
Type of Publication: A4 Article in conference proceedings
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: The research leading to these results has received funding from the Nokia Corporation Ltd. The authors would like to acknowledge GLOBALFOUNDARIES for the silicon processing and technical support. This research has also been in part financially supported by Academy of Finland 6Genesis Flagship (grant 318927) and UniOGS Oulu doctoral school.
Academy of Finland Grant Number: 318927
Detailed Information: 318927 (Academy of Finland Funding decision)
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