Exploiting ambipolarity in graphene field-effect transistors for novel designs on high-frequency analog electronics Pasadas Cantos, Francisco Medina Rull, Alberto García Ruiz, Francisco Javier Ramos-Silva, Javier Noe Pacheco-Sanchez, Anibal Pardo, Mari-Carmen Toral López, Alejandro Godoy Medina, Andrés Ramírez-García, Eloy Jiménez, David González Marín, Enrique Ambipolarity Graphene High frequency Mixers Modulators Multipliers Phase shifters This work was funded by FEDER/Junta de Andalucía-Consejería de Transformación Económica, Industria, Conocimiento y Universidades through the Projects A-TIC-646-UGR20, B-RNM-375-UGR18 and P20_00633; by Junta de Andalucía-Consejería de Universidad, Investigación e Innovación under ENERGHENE Project No. P21_00149; and by MCIN/AEI/10.13039/501100011033 through the projects PID2020- 116518GB-I00 and PID2021-127840NB-I00 (MCIN/AEI/FEDER, UE). The authors also acknowledge the support by the European Union’s Horizon 2020 Framework Programme for Research and Innovation through the Project GrapheneCore3 under Grant Agreement No. 881603. F.P. acknowledges funding from PAIDI 2020 – European Social Fund Operational Programme 2014–2020 No. 20804. A.M. acknowledges the support of the MCIN/AEI/PTA grant, with reference PTA2020-018250-I. M.C.P. acknowledges the FPU program with reference FPU21/04904. A.P.-S. acknowledges the support from Ministerio de Ciencia, Innovación y Universidades under Grant Agreement No. FJC2020-046213-I. E.R.-G. acknowledges the support from IPN Contract No. SIP/20230362. Funding for open access charge: Universidad de Granada / CBUA. Exploiting ambipolar electrical conductivity based on graphene field-effect transistors has raised enormous interest for high-frequency (HF) analog electronics. Controlling the device polarity, by biasing the graphene transistor around the vertex of the V-shaped transfer curve, enables to redesign and highly simplify conventional analog circuits, and simultaneously to seek for multifunctionalities, especially in the HF domain. This study presents new insights for the design of different HF applications such as power amplifiers, mixers, frequency multipliers, phase shifters, and modulators that specifically leverage the inherent ambipolarity of graphene-based transistors. 2023-09-07T07:32:25Z 2023-09-07T07:32:25Z 2023-09 journal article Pasadas, Francisco, et al. Small 2023, 2303595 [https://doi.org/10.1002/smll.202303595] https://hdl.handle.net/10481/84301 https://doi.org/10.1002/smll.202303595 eng info:eu-repo/grantAgreement/EC/H2020/881603 http://creativecommons.org/licenses/by-nc-nd/4.0/ open access Attribution-NonCommercial-NoDerivatives 4.0 Internacional Wiley-VCH GmbH