Graphene-based tunable non-foster circuit for VHF applications

Graphene-based tunable non-foster circuit for VHF applications

This paper presents a negative impedance converter (NIC) based on graphene field effect transistors (GFETs) for VHF applications. The NIC is designed following Linvill’s open circuit stable (OCS) topology. The DC modelling parameters of GFET are extracted from a device measured by Meric et al. [IEEE...

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Main Authors: Jing Tian, Deepak Singh Nagarkoti, Khalid Z. Rajab, Yang Hao
Format: Article
Language:English
Published: AIP Publishing LLC 2016-06-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/1.4953354
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spelling doaj-1622deb07fc94252a4d1b7c6e48811dc2020-11-24T20:51:58ZengAIP Publishing LLCAIP Advances2158-32262016-06-0166065202065202-710.1063/1.4953354007606ADVGraphene-based tunable non-foster circuit for VHF applicationsJing Tian0Deepak Singh Nagarkoti1Khalid Z. Rajab2Yang Hao3School of Electronic Engineering and Computer Science, Queen Mary, University of London, London, E1 4NS, U.K.School of Electronic Engineering and Computer Science, Queen Mary, University of London, London, E1 4NS, U.K.School of Electronic Engineering and Computer Science, Queen Mary, University of London, London, E1 4NS, U.K.School of Electronic Engineering and Computer Science, Queen Mary, University of London, London, E1 4NS, U.K.This paper presents a negative impedance converter (NIC) based on graphene field effect transistors (GFETs) for VHF applications. The NIC is designed following Linvill’s open circuit stable (OCS) topology. The DC modelling parameters of GFET are extracted from a device measured by Meric et al. [IEEE Electron Devices Meeting, 23.2.1 (2010)] Estimated parasitics are also taken into account. Simulation results from Keysight Advanced Design System (ADS) show good NIC performance up to 200 MHz and the value of negative capacitance is directly proportional to the capacitive load. In addition, it has been shown that by varying the supply voltage the value of negative capacitance can also be tuned. The NIC stability has been tested up to 2 GHz (10 times the maximum operation frequency) using Nyquist stability criterion to ensure there are no oscillation issues.http://dx.doi.org/10.1063/1.4953354
collection DOAJ
language English
format Article
sources DOAJ
author Jing Tian
Deepak Singh Nagarkoti
Khalid Z. Rajab
Yang Hao
spellingShingle Jing Tian
Deepak Singh Nagarkoti
Khalid Z. Rajab
Yang Hao
Graphene-based tunable non-foster circuit for VHF applications
AIP Advances
author_facet Jing Tian
Deepak Singh Nagarkoti
Khalid Z. Rajab
Yang Hao
author_sort Jing Tian
title Graphene-based tunable non-foster circuit for VHF applications
title_short Graphene-based tunable non-foster circuit for VHF applications
title_full Graphene-based tunable non-foster circuit for VHF applications
title_fullStr Graphene-based tunable non-foster circuit for VHF applications
title_full_unstemmed Graphene-based tunable non-foster circuit for VHF applications
title_sort graphene-based tunable non-foster circuit for vhf applications
publisher AIP Publishing LLC
series AIP Advances
issn 2158-3226
publishDate 2016-06-01
description This paper presents a negative impedance converter (NIC) based on graphene field effect transistors (GFETs) for VHF applications. The NIC is designed following Linvill’s open circuit stable (OCS) topology. The DC modelling parameters of GFET are extracted from a device measured by Meric et al. [IEEE Electron Devices Meeting, 23.2.1 (2010)] Estimated parasitics are also taken into account. Simulation results from Keysight Advanced Design System (ADS) show good NIC performance up to 200 MHz and the value of negative capacitance is directly proportional to the capacitive load. In addition, it has been shown that by varying the supply voltage the value of negative capacitance can also be tuned. The NIC stability has been tested up to 2 GHz (10 times the maximum operation frequency) using Nyquist stability criterion to ensure there are no oscillation issues.
url http://dx.doi.org/10.1063/1.4953354
work_keys_str_mv AT jingtian graphenebasedtunablenonfostercircuitforvhfapplications
AT deepaksinghnagarkoti graphenebasedtunablenonfostercircuitforvhfapplications
AT khalidzrajab graphenebasedtunablenonfostercircuitforvhfapplications
AT yanghao graphenebasedtunablenonfostercircuitforvhfapplications
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