A Broadband Tunable Coaxial Attenuator Based on Graphene
A dynamically tunable coaxial attenuator based on graphene is presented in this paper. The attenuator is achieved by inserting a graphene sandwich structure (GSS) inside the dielectric of coaxial line along the propagation direction of electromagnetic waves to dissipate the electromagnetic field. Th...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2019-01-01
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| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/8815702/ |
| _version_ | 1818936355654205440 |
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| author | Hui Chen Zhen Guo Liu Wei Bing Lu An Qi Zhang Hao Chen |
| author_facet | Hui Chen Zhen Guo Liu Wei Bing Lu An Qi Zhang Hao Chen |
| author_sort | Hui Chen |
| collection | DOAJ |
| description | A dynamically tunable coaxial attenuator based on graphene is presented in this paper. The attenuator is achieved by inserting a graphene sandwich structure (GSS) inside the dielectric of coaxial line along the propagation direction of electromagnetic waves to dissipate the electromagnetic field. The mechanism of attenuator is theoretically analyzed, and an approximate formula to calculate attenuation with different parameters is proposed. We experimentally demonstrate that attenuation of the attenuator can be tuned from 3 dB to 14.5 dB with good flatness in broad operation frequency from 2 GHz to 9 GHz when graphene impedance is changed by different bias voltage. The theoretical calculation and simulation results have a good agreement with experimental results, while the $\vert S_{11}\vert $ can always remain low level under -15 dB. |
| first_indexed | 2024-12-20T05:34:45Z |
| format | Article |
| id | doaj.art-837579fb190743cb852ef9190342982f |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-20T05:34:45Z |
| publishDate | 2019-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-837579fb190743cb852ef9190342982f2022-12-21T19:51:39ZengIEEEIEEE Access2169-35362019-01-01712759312759910.1109/ACCESS.2019.29378358815702A Broadband Tunable Coaxial Attenuator Based on GrapheneHui Chen0Zhen Guo Liu1https://orcid.org/0000-0001-9948-6773Wei Bing Lu2An Qi Zhang3Hao Chen4State Key Laboratory of Millimeter Waves, School of Information Science and Engineering, Southeast University, Nanjing, ChinaState Key Laboratory of Millimeter Waves, School of Information Science and Engineering, Southeast University, Nanjing, ChinaState Key Laboratory of Millimeter Waves, School of Information Science and Engineering, Southeast University, Nanjing, ChinaState Key Laboratory of Millimeter Waves, School of Information Science and Engineering, Southeast University, Nanjing, ChinaState Key Laboratory of Millimeter Waves, School of Information Science and Engineering, Southeast University, Nanjing, ChinaA dynamically tunable coaxial attenuator based on graphene is presented in this paper. The attenuator is achieved by inserting a graphene sandwich structure (GSS) inside the dielectric of coaxial line along the propagation direction of electromagnetic waves to dissipate the electromagnetic field. The mechanism of attenuator is theoretically analyzed, and an approximate formula to calculate attenuation with different parameters is proposed. We experimentally demonstrate that attenuation of the attenuator can be tuned from 3 dB to 14.5 dB with good flatness in broad operation frequency from 2 GHz to 9 GHz when graphene impedance is changed by different bias voltage. The theoretical calculation and simulation results have a good agreement with experimental results, while the $\vert S_{11}\vert $ can always remain low level under -15 dB.https://ieeexplore.ieee.org/document/8815702/Attenuatorgraphenedynamically tunablecoaxial line |
| spellingShingle | Hui Chen Zhen Guo Liu Wei Bing Lu An Qi Zhang Hao Chen A Broadband Tunable Coaxial Attenuator Based on Graphene IEEE Access Attenuator graphene dynamically tunable coaxial line |
| title | A Broadband Tunable Coaxial Attenuator Based on Graphene |
| title_full | A Broadband Tunable Coaxial Attenuator Based on Graphene |
| title_fullStr | A Broadband Tunable Coaxial Attenuator Based on Graphene |
| title_full_unstemmed | A Broadband Tunable Coaxial Attenuator Based on Graphene |
| title_short | A Broadband Tunable Coaxial Attenuator Based on Graphene |
| title_sort | broadband tunable coaxial attenuator based on graphene |
| topic | Attenuator graphene dynamically tunable coaxial line |
| url | https://ieeexplore.ieee.org/document/8815702/ |
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