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Physical-Based Simulation of the GaN-Based Grooved-Anode Planar Gunn Diode

In this paper, a novel gallium nitride (GaN)-based heterostructure Gunn diode is proposed for the first time to enhance the output characteristics of Gunn oscillation waveforms. A well-designed grooved anode contact is adopted to separate the long-channel diode into two short-channel diodes in paral...

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Detalles Bibliográficos
Autores principales: Wang, Ying, Li, Liu-An, Ao, Jin-Ping, Hao, Yue
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7020149/
https://www.ncbi.nlm.nih.gov/pubmed/31963240
http://dx.doi.org/10.3390/mi11010097
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author Wang, Ying
Li, Liu-An
Ao, Jin-Ping
Hao, Yue
author_facet Wang, Ying
Li, Liu-An
Ao, Jin-Ping
Hao, Yue
author_sort Wang, Ying
collection PubMed
description In this paper, a novel gallium nitride (GaN)-based heterostructure Gunn diode is proposed for the first time to enhance the output characteristics of Gunn oscillation waveforms. A well-designed grooved anode contact is adopted to separate the long-channel diode into two short-channel diodes in parallel. If the grooved anode contact is positioned in the middle of the device, the output power nearly doubles in the grooved-anode diode compared with the single-channel ones, as does the output frequency. Based on the numerical results, the best output characteristics are obtained at the 2.0-µm symmetrical grooved-anode diode, which produces nearly 5.48 mW of power at the fundamental frequency of 172.81 GHz, with 3.13% efficiency of power conversion. If the grooved anode contact is not positioned in the middle of the diode, the harmonic frequency would be enhanced. The GaN heterostructure grooved-anode Gunn diode has been demonstrated to be an excellent solid-state source of terahertz oscillator.
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spelling pubmed-70201492020-03-09 Physical-Based Simulation of the GaN-Based Grooved-Anode Planar Gunn Diode Wang, Ying Li, Liu-An Ao, Jin-Ping Hao, Yue Micromachines (Basel) Article In this paper, a novel gallium nitride (GaN)-based heterostructure Gunn diode is proposed for the first time to enhance the output characteristics of Gunn oscillation waveforms. A well-designed grooved anode contact is adopted to separate the long-channel diode into two short-channel diodes in parallel. If the grooved anode contact is positioned in the middle of the device, the output power nearly doubles in the grooved-anode diode compared with the single-channel ones, as does the output frequency. Based on the numerical results, the best output characteristics are obtained at the 2.0-µm symmetrical grooved-anode diode, which produces nearly 5.48 mW of power at the fundamental frequency of 172.81 GHz, with 3.13% efficiency of power conversion. If the grooved anode contact is not positioned in the middle of the diode, the harmonic frequency would be enhanced. The GaN heterostructure grooved-anode Gunn diode has been demonstrated to be an excellent solid-state source of terahertz oscillator. MDPI 2020-01-16 /pmc/articles/PMC7020149/ /pubmed/31963240 http://dx.doi.org/10.3390/mi11010097 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Wang, Ying
Li, Liu-An
Ao, Jin-Ping
Hao, Yue
Physical-Based Simulation of the GaN-Based Grooved-Anode Planar Gunn Diode
title Physical-Based Simulation of the GaN-Based Grooved-Anode Planar Gunn Diode
title_full Physical-Based Simulation of the GaN-Based Grooved-Anode Planar Gunn Diode
title_fullStr Physical-Based Simulation of the GaN-Based Grooved-Anode Planar Gunn Diode
title_full_unstemmed Physical-Based Simulation of the GaN-Based Grooved-Anode Planar Gunn Diode
title_short Physical-Based Simulation of the GaN-Based Grooved-Anode Planar Gunn Diode
title_sort physical-based simulation of the gan-based grooved-anode planar gunn diode
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7020149/
https://www.ncbi.nlm.nih.gov/pubmed/31963240
http://dx.doi.org/10.3390/mi11010097
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