Double-balanced mixer based on monolayer graphene field-effect transistors

Min Wu; Weida Hong; Guanyu Liu; Jiejun Zhang; Ziao Tian; Miao Zhang

doi:10.1088/1674-4926/43/5/052002

Journals >Journal of Semiconductors >Volume 43 >Issue 5 >Page 052002 > Article

Journal of Semiconductors
Vol. 43, Issue 5, 052002 (2022)

Double-balanced mixer based on monolayer graphene field-effect transistors

Min Wu¹, Weida Hong², Guanyu Liu², Jiejun Zhang², Ziao Tian², and Miao Zhang²

Author Affiliations

¹School of Microelectronics, University of Science and Technology of China, Hefei 230022, China

²Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China

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DOI: 10.1088/1674-4926/43/5/052002 Cite this Article

Min Wu, Weida Hong, Guanyu Liu, Jiejun Zhang, Ziao Tian, Miao Zhang. Double-balanced mixer based on monolayer graphene field-effect transistors[J]. Journal of Semiconductors, 2022, 43(5): 052002 Copy Citation Text

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Abstract

Graphene field-effect transistors (GFET) have attracted much attention in the radio frequency (RF) and microwave fields because of its extremely high carrier mobility. In this paper, a GFET with a gate length of 5 μm is fabricated through the van der Walls (vdW) transfer process, and then the existing large-signal GFET model is described, and the model is implemented in Verilog-A for analysis in RF and microwave circuits. Next a double-balanced mixer based on four GFETs is designed and analyzed in advanced design system (ADS) tools. Finally, the simulation results show that with the input of 300 and 280 MHz, the IIP3 of the mixed signal is 24.5 dBm.

$ {I}_{\mathrm{d}\mathrm{s}1}=\frac{{\mu }_{\mathrm{e}}{V}_{\mathrm{d}\mathrm{i}\mathrm{r}\mathrm{a}\mathrm{c}}{Q}_{0}}{\sqrt{1+\dfrac{{\mu }_{\mathrm{e}}\left|{V}_{\mathrm{g}\mathrm{s}}{V}_{\mathrm{d}\mathrm{s}}\right|}{L \overline {{v}_{\mathrm{s}\mathrm{a}\mathrm{t}}}}}}\frac{W}{L}f\left(\overline {{V}_{\mathrm{g}\mathrm{s}}}, \overline {{V}_{\mathrm{g}\mathrm{d}}}\right) $

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$ \begin{split}{I}_{\mathrm{d}\mathrm{s}2}= & \dfrac{{\mu }_{\mathrm{e}}{V}_{\mathrm{d}\mathrm{i}\mathrm{r}\mathrm{a}\mathrm{c}}{Q}_{0}}{\sqrt{1+\dfrac{{\mu }_{\mathrm{e}}\left|{V}_{\mathrm{g}\mathrm{s}}{V}_{\mathrm{d}\mathrm{s}}\right|}{L\overline{{v}_{\mathrm{s}\mathrm{a}\mathrm{t}}}}}}\dfrac{W}{L}f\left(\overline{{V}_{\mathrm{g}\mathrm{s}}},0\right)+\\ & \dfrac{{\mu }_{\mathrm{h}}{V}_{{\rm{dirac}}}{Q}_{0}}{\sqrt{1+\dfrac{{\mu }_{\mathrm{h}}\left|{V}_{\mathrm{g}\mathrm{s}}{V}_{\mathrm{d}\mathrm{s}}\right|}{L\overline{{v}_{\mathrm{s}\mathrm{a}\mathrm{t}}}}}}\dfrac{W}{L}f\left(0,\overline{{V}_{\mathrm{g}\mathrm{d}}}\right) \end{split}$

(2)

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$ \begin{split}{I}_{\mathrm{d}\mathrm{s}3}= & \dfrac{{\mu }_{\mathrm{h}}{V}_{\mathrm{d}\mathrm{i}\mathrm{r}\mathrm{a}\mathrm{c}}{Q}_{0}}{\sqrt{1+\dfrac{{\mu }_{\mathrm{h}}\left|{V}_{\mathrm{g}\mathrm{s}}{V}_{\mathrm{d}\mathrm{s}}\right|}{L\overline{{v}_{\mathrm{s}\mathrm{a}\mathrm{t}}}}}}\dfrac{W}{L}f\left(\overline{{V}_{\mathrm{g}\mathrm{s}}},0\right)+\\ & \dfrac{{\mu }_{\mathrm{e}}{V}_{\mathrm{d}\mathrm{i}\mathrm{r}\mathrm{a}\mathrm{c}}{Q}_{0}}{\sqrt{1+\dfrac{{\mu }_{\mathrm{e}}\left|{V}_{\mathrm{g}\mathrm{s}}{V}_{\mathrm{d}\mathrm{s}}\right|}{L\overline{{v}_{\mathrm{s}\mathrm{a}\mathrm{t}}}}}}\dfrac{W}{L}f\left(0,\overline{{V}_{\mathrm{g}\mathrm{d}}}\right) \end{split}$

(3)

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$ {I}_{\mathrm{d}\mathrm{s}4}=\frac{{\mu }_{\mathrm{h}}{V}_{\mathrm{d}\mathrm{i}\mathrm{r}\mathrm{a}\mathrm{c}}{Q}_{0}}{\sqrt{1+\dfrac{{\mu }_{\mathrm{h}}\left|{V}_{\mathrm{g}\mathrm{s}}{V}_{\mathrm{d}\mathrm{s}}\right|}{L\overline{{v}_{\mathrm{s}\mathrm{a}\mathrm{t}}}}}}\frac{W}{L}f\left(\overline{{V}_{\mathrm{g}\mathrm{s}}},\overline{{V}_{\mathrm{g}\mathrm{d}}}\right) $

(4)

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$ f\left(x,y\right)=x\sqrt{1+{x}^{2}}-y\sqrt{1+{y}^{2}}+\frac{\mathrm{l}\mathrm{n}\sqrt{1+{x}^{2}}+x}{\sqrt{1+{y}^{2}}+y} ,$

(5)

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$ {R}_{\mathrm{d}}={R}_{\mathrm{s}}={R}_{0}+{R}_{\mathrm{e}\mathrm{x}\mathrm{t}}({V}_{\mathrm{g}\mathrm{s}},{V}_{\mathrm{g}\mathrm{d}}), $

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$ {R}_{\mathrm{e}\mathrm{x}\mathrm{t}}\left({V}_{\mathrm{g}\mathrm{s}},{V}_{\mathrm{g}\mathrm{d}}\right)=\frac{1+\mathrm{t}\mathrm{a}\mathrm{n}\mathrm{h}{V}_{\mathrm{g}\mathrm{s}}}{2} \frac{1+\mathrm{tanh}{V}_{\mathrm{g}\mathrm{d}}}{2} {R}_{\mathrm{e}\mathrm{x}\mathrm{t}0}, $

(7)

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Min Wu, Weida Hong, Guanyu Liu, Jiejun Zhang, Ziao Tian, Miao Zhang. Double-balanced mixer based on monolayer graphene field-effect transistors[J]. Journal of Semiconductors, 2022, 43(5): 052002

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