Nonlinear Microwave Characterization of CVD Grown Graphene

Mingguang Tuo, Dongchao Xu, Si Li, Min Liang, Qi Zhu, Qing Hao, Hao Xin

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

Linear and nonlinear microwave properties of chemical vapor deposition (CVD)-grown graphene are characterized by incorporating a coplanar waveguide (CPW) transmission-line test structure. The intrinsic linear transport properties (S-parameters) of the graphene sample are measured and extracted via a deembedding procedure and then fitted with an equivalent circuit model up to 10 GHz. A statistical uncertainty analysis based on multiple measurements is implemented to estimate the error of the extracted graphene linear parameters as well. Nonlinear properties (second- and third-order harmonics as a function of fundamental input power) of the sample are also measured with a fundamental input signal of 1 GHz. Clear harmonics generated from graphene are observed, while no obvious fundamental power saturation is seen. The measured nonlinearity is applied in a graphene patch antenna case study to understand its influence on potential applications in terms of third-order intermodulation levels.

Original languageEnglish (US)
Article number7378856
Pages (from-to)1557-1560
Number of pages4
JournalIEEE Antennas and Wireless Propagation Letters
Volume15
DOIs
StatePublished - Dec 2016

Keywords

  • Equivalent Circuit Model
  • Graphene
  • Intermodulation
  • Nonlinearity

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Nonlinear Microwave Characterization of CVD Grown Graphene'. Together they form a unique fingerprint.

  • Cite this