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Electrical Modeling and Characterization of Graphene-Based On-Chip Spiral Inductors
Da-Wei Wang1, Meng-Jiao Yuan1, Jia-Yun Dai2
1Zhejiang Provincial Key Lab of Large-Scale Integrated Circuit Design, School of Electronics and Information, Hangzhou Dianzi University, Hangzhou 310018, China.
Micromachines
|November 11, 2022
Summary
Graphene can enhance on-chip spiral inductor performance by improving electrical characteristics and inductance, especially in tapered designs compared to uniform ones.
Area of Science:
- Electrical Engineering
- Materials Science
- Nanotechnology
Background:
- On-chip spiral inductors are crucial passive components in integrated circuits.
- Copper is the conventional material, but its performance is limited by skin and proximity effects.
- Graphene offers potential for improved inductor performance due to its unique electrical properties.
Purpose of the Study:
- To investigate the electrical performance of graphene-based on-chip spiral inductors.
- To develop and utilize a physics-based equivalent circuit model for analysis.
- To compare the performance of graphene inductors with traditional copper inductors.
Main Methods:
- A physics-based equivalent circuit model was developed.
- Skin effect, proximity effect, and substrate loss were incorporated into the model.
- Graphene's resistance and inductance were integrated into the circuit model.
- Simulations were performed to analyze inductor characteristics.
Main Results:
- Graphene-based inductors show improved electrical characteristics compared to copper inductors.
- Graphene effectively enhances inductance, particularly in tapered inductor designs.
- The developed model accurately predicts the performance of graphene spiral inductors.
Conclusions:
- Replacing copper with graphene in on-chip spiral inductors offers significant performance benefits.
- Tapered graphene inductors demonstrate superior inductance enhancement over uniform designs.
- Graphene is a promising material for next-generation high-performance on-chip inductors.
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