High-Precision Time-to-Digital Conversion for Calibration of Outphasing Radio Transmitters

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dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorBoopathy, Dhanashreeen_US
dc.contributor.authorCheung, Tze Hinen_US
dc.contributor.authorSpelman, Andreien_US
dc.contributor.authorGhosh, Agnimeshen_US
dc.contributor.authorLampu, Vesaen_US
dc.contributor.authorAnttila, Laurien_US
dc.contributor.authorStadius, Karien_US
dc.contributor.authorKosunen, Markoen_US
dc.contributor.authorRyynanen, Jussien_US
dc.contributor.authorUnnikrishnan, Vishnuen_US
dc.contributor.departmentDepartment of Electronics and Nanoengineeringen
dc.contributor.groupauthorJussi Ryynänen Groupen
dc.contributor.organizationDepartment of Electronics and Nanoengineeringen_US
dc.contributor.organizationTampere Universityen_US
dc.date.accessioned2024-02-07T08:18:51Z
dc.date.available2024-02-07T08:18:51Z
dc.date.issued2023en_US
dc.descriptionFunding Information: This work was funded by European Union s Horizon 2020 Research and Innovation program under the Marie Sklodowska-Curie Grant No. 860921 and Academy of Finland. Funding Information: This work was funded by European Union’s Horizon 2020 Research and Innovation program under the Marie Skłodowska-Curie Grant No. 860921 and Academy of Finland. | openaire: EC/H2020/860921/EU//SMArT
dc.description.abstractWireless transceivers for 5G NR FR2 frequencies around 30 GHz support signal bandwidths up to 400 MHz to achieve ambitious data rates. The Phase Modulators (PMs) in the FR2 outphasing transmitters generates delays with delay steps of about a few hundred femtoseconds. To calibrate and linearize the PMs, time-to-digital converters (TDCs) that measure delays with higher accuracy in the order of a few femtoseconds are required. To this end, this work explores two synthesizable time interval averaging (TIA) TDCs which employ averaging to achieve a high accuracy with low-precision hardware. The results show that the delay quantization step of the converter has an effect only on the time taken to achieve the required accuracy, presenting opportunities to reduce area and power consumption. Simulation shows that a TDC with quantization step of 12.5 ns achieves an accuracy of 0.3 fs by averaging 2^28 samples. For a 32 GHz 7-bit PM producing a minimum delay step of 244 fs, this implies a TDC of 8-bit precision for each time step. The hardware synthesized towards a 22 nm FDSOI process occupies 0.0004 mm^2 area and consumes 0.3 mW power.en
dc.description.versionPeer revieweden
dc.format.extent5
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationBoopathy, D, Cheung, T H, Spelman, A, Ghosh, A, Lampu, V, Anttila, L, Stadius, K, Kosunen, M, Ryynanen, J & Unnikrishnan, V 2023, High-Precision Time-to-Digital Conversion for Calibration of Outphasing Radio Transmitters . in 21st IEEE Interregional NEWCAS Conference, NEWCAS 2023 - Proceedings . IEEE international new circuits and systems conference, IEEE, IEEE Interregional NEWCAS Conference, Edinburgh, United Kingdom, 26/06/2023 . https://doi.org/10.1109/NEWCAS57931.2023.10198030en
dc.identifier.doi10.1109/NEWCAS57931.2023.10198030en_US
dc.identifier.isbn979-8-3503-0024-6
dc.identifier.issn2472-467X
dc.identifier.issn2474-9672
dc.identifier.otherPURE UUID: 7d803bd0-fc28-47a1-8823-a1719f48a5f0en_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/7d803bd0-fc28-47a1-8823-a1719f48a5f0en_US
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=85168556550&partnerID=8YFLogxKen_US
dc.identifier.otherPURE LINK: https://urn.fi/URN:NBN:fi:tuni-202401191622en_US
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/135514543/High-Precision_Time-to-Digital_Conversion_for_Calibration_of_Outphasing_Radio_Transmitters.pdfen_US
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/126696
dc.identifier.urnURN:NBN:fi:aalto-202402072355
dc.language.isoenen
dc.relationinfo:eu-repo/grantAgreement/EC/H2020/860921/EU//SMArTen_US
dc.relation.ispartofIEEE International New Circuits and Systems Conferenceen
dc.relation.ispartofseries21st IEEE Interregional NEWCAS Conference, NEWCAS 2023 - Proceedingsen
dc.relation.ispartofseriesIEEE international new circuits and systems conferenceen
dc.rightsopenAccessen
dc.subject.keyworddelay measurementen_US
dc.subject.keyworddigital circuiten_US
dc.subject.keywordquantizationen_US
dc.subject.keywordrandom samplingen_US
dc.subject.keywordtime-to-digital converter (TDC)en_US
dc.titleHigh-Precision Time-to-Digital Conversion for Calibration of Outphasing Radio Transmittersen
dc.typeA4 Artikkeli konferenssijulkaisussafi
dc.type.versionpublishedVersion
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