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dc.contributor.author | Venter, J.J.P. (Johannes)![]() |
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dc.contributor.author | Franc, Anne-Laure![]() |
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dc.contributor.author | Stander, Tinus![]() |
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dc.contributor.author | Ferrari, Philippe![]() |
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dc.date.accessioned | 2021-07-22T13:47:38Z | |
dc.date.issued | 2022-05 | |
dc.description.abstract | This paper presents a systematic comparison of the relationship between transmission line characteristic impedance and Q-factor of CPW, slow-wave CPW, microstrip, and slow-wave microstrip in the same CMOS back-end-of-line process. It is found that the characteristic impedance for optimal Q-factor depends on the ground-to-ground spacing of the slow-wave transmission line. Although the media are shown to be similar from a mode of propagation point of view, the 60-GHz optimal Q-factor for slow-wave transmission lines is achieved when the characteristic impedance is ≈23 Ω for slow-wave CPWs and ≈43 Ω for slow-wave microstrip lines, with Q-factor increasing for wider ground plane gaps. Moreover, it is shown that slow-wave CPW is found to have a 12% higher optimal Q-factor than slow-wave microstrip for a similar chip area. The data presented here may be used in selecting Z0 values for S-MS and S-CPW passives in CMOS that maximize transmission line Q-factors. | en_ZA |
dc.description.department | Electrical, Electronic and Computer Engineering | en_ZA |
dc.description.embargo | 2021-10-20 | |
dc.description.librarian | hj2021 | en_ZA |
dc.description.sponsorship | The South African Radio Astronomy Observatory (SARAO) (www.sarao.ac.za) and the National Research Foundation (NRF) of South Africa. | en_ZA |
dc.description.uri | http://journals.cambridge.org/action/displayJournal?jid=MRF | en_ZA |
dc.identifier.citation | Venter, J. J. P., Franc, A.-L., Stander, T. and Ferrari, P. (2022) “Transmission lines characteristic impedance versus Q-factor in CMOS technology,” International Journal of Microwave and Wireless Technologies. Cambridge University Press, 14(4), pp. 432–437. doi: 10.1017/S175907872100060X. | en_ZA |
dc.identifier.issn | 1759-0787 (print) | |
dc.identifier.issn | 1759-0795 (online) | |
dc.identifier.other | 10.1017/S175907872100060X | |
dc.identifier.uri | http://hdl.handle.net/2263/80957 | |
dc.language.iso | en | en_ZA |
dc.publisher | Cambridge University Press | en_ZA |
dc.rights | © The Author(s), 2021. Published by Cambridge University Press in association with the European Microwave Association. | en_ZA |
dc.subject | Coplanar waveguide | en_ZA |
dc.subject | Microstrip | en_ZA |
dc.subject | Millimeter wave integrated circuits | en_ZA |
dc.subject | Slow-wave transmission lines | en_ZA |
dc.title | Transmission lines characteristic impedance versus Q-factor in CMOS technology | en_ZA |
dc.type | Postprint Article | en_ZA |