University of Oulu

M. J. Nokandi, A. Pärssinen and T. Rahkonen, "A Coherent Spurious Analysis for Sub-THz Frequency Multiplier Chains," 2020 IEEE International Symposium on Circuits and Systems (ISCAS), Sevilla, 2020, pp. 1-5, doi: 10.1109/ISCAS45731.2020.9181163

A coherent spurious analysis for sub-THz frequency multiplier chains

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Author: Nokandi, Mostafa Jafari1; Pärssinen, Aarno1; Rahkonen, Timo1
Organizations: 1Circuits and Systems Research Unit (CAS) ITEE Faculty, University of Oulu Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.3 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2020
Publish Date: 2021-01-13


At sub-THz frequencies, the local oscillation for transceivers is often generated by an analog frequency multiplier tree. This paper studies the origins and minimization of spurious tones in a local oscillator multiplier consisting of a chain of frequency doublers. It is found that the nearest spurious components depend on the leakage of the input signal in the first multiplier, which can be minimized by active bias tuning, filtering in the first stage or better balance in the driving differential signal. To verify the nonlinearity modeling, 0.13-μm SiGe BiCMOS technology has been utilized.

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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: 9181163
DOI: 10.1109/ISCAS45731.2020.9181163
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 research has been financially supported by the Academy of Finland 6Genesis Flagship (grant 318927).
Academy of Finland Grant Number: 318927
Detailed Information: 318927 (Academy of Finland Funding decision)
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