University of Oulu

M. Montaseri, M. Jafari-Nokandi, A. Pärssinen and T. Rahkonen, "Analysis of HBT Vector Modulator Phase Shifters Based on Gilbert Cell for sub-THz Regimes," 2020 IEEE International Symposium on Circuits and Systems (ISCAS), Sevilla, 2020, pp. 1-5, doi: 10.1109/ISCAS45731.2020.9181167

Analysis of HBT vector modulator phase shifters based on Gilbert cell for sub-THz regimes

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Author: Montaseri, Mohammad1; Jafari-Nokandi, Mostafa2; Pärssinen, Aarno1;
Organizations: 1Center for Wireless Communications, ITEE Department, University of Oulu, Oulu, Finland
2Circuits and Systems Lab, ITEE Department University of Oulu, Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.9 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2020
Publish Date: 2021-01-14


This paper concerns with the nonlinearity analysis and compensation of active phase shifters based on vector modulator topologies which utilize Gilbert cell type multipliers. In this respect, both frequency dependence and expansion behavior of such topologies are analyzed. Based on translinear circuits theory, log/anti-log nonlinear equations are transformed to algebraic linear equations and/or multiplication equations, which facilitates solution for such nonlinear equations. To validate the analyses, a 5-bit active phase shifter was designed and simulated in 0.13um HBT technology node. 3D electromagnetic simulation results verify the consistency of the analysis and proposed compensation technique.

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Series: IEEE International Symposium on Circuits and Systems proceedings
ISSN: 0271-4302
ISSN-E: 2158-1525
ISSN-L: 0271-4302
ISBN: 978-1-7281-3320-1
ISBN Print: 978-1-7281-3321-8
Pages: 1 - 5
Article number: 9181167
DOI: 10.1109/ISCAS45731.2020.9181167
Host publication: 2020 IEEE International Symposium on Circuits and Systems (ISCAS)
Conference: IEEE International Symposium on Circuits and Systems
Type of Publication: A4 Article in conference proceedings
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This work was supported by the Academy of Finland 6Genesis Flagship (grant no. 318927).
Academy of Finland Grant Number: 318927
Detailed Information: 318927 (Academy of Finland Funding decision)
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