A novel 2-Dimensional correction method for mm-Wave Cartesian I/Q Modulators

M. Neofytou, P. Athanasiadis, M. Ganzerli, M. Lont, G.I. Radulov, Kostas Doris

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

Samenvatting

This paper proposes a self-corrected In-phase/Quadrature-phase (I/Q) digital Cartesian modulator. The modulator is comprised of double balanced Gilbert cells to mitigate code dependent input and output impedances. Transistor-level simulations in 28 nm bulk CMOS demonstrate a static error vector magnitude (EVM) of −35 dB at 79 GHz carrier while providing 9.5 dBm peak output power with ~19% drain efficiency. Transistor level analysis shows that the linearity is limited by the transconductance (gm) I and Q input code dependency. To address this dependency a self-contained 2-dimensional correction technique is proposed. The proposed correction method improves the EVM from −35 dB to −42.5 dB without compromising the output power, power efficiency and occupied silicon area. The proposed solution enables linear and power efficient transmitters (TXs) for mm-Wave applications.
Originele taal-2Engels
Titel2021 IEEE International Symposium on Circuits and Systems (ISCAS)
UitgeverijIEEE/LEOS
Aantal pagina's5
ISBN van geprinte versie978-1-7281-9202-4
DOI's
StatusGepubliceerd - 27 apr 2021
Evenement2021 IEEE International Symposium on Circuits and Systems (ISCAS) - VIRTUA:, Daegu, Noord-Korea
Duur: 22 mei 202128 mei 2021

Congres

Congres2021 IEEE International Symposium on Circuits and Systems (ISCAS)
LandNoord-Korea
StadDaegu
Periode22/05/2128/05/21

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