Sub-wavelength waveguide loaded by a complementary electric metamaterial for vacuum electron devices
We report the electromagnetic properties of a waveguide loaded by complementary electric split ring resonators (CeSRRs) and the application of the waveguide in vacuum electronics. The S-parameters of the CeSRRs in free space are calculated using the HFSS code and are used to retrieve the effective p...
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| Format: | Article |
| Language: | en_US |
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American Institute of Physics (AIP)
2017
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| Online Access: | http://hdl.handle.net/1721.1/111190 https://orcid.org/0000-0002-3661-6267 https://orcid.org/0000-0001-9813-0177 |
| _version_ | 1826212710184910848 |
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| author | Duan, Zhaoyun Hummelt, Jason Samuel Shapiro, Michael Temkin, Richard J |
| author2 | Massachusetts Institute of Technology. Plasma Science and Fusion Center |
| author_facet | Massachusetts Institute of Technology. Plasma Science and Fusion Center Duan, Zhaoyun Hummelt, Jason Samuel Shapiro, Michael Temkin, Richard J |
| author_sort | Duan, Zhaoyun |
| collection | MIT |
| description | We report the electromagnetic properties of a waveguide loaded by complementary electric split ring resonators (CeSRRs) and the application of the waveguide in vacuum electronics. The S-parameters of the CeSRRs in free space are calculated using the HFSS code and are used to retrieve the effective permittivity and permeability in an effective medium theory. The dispersion relation of a waveguide loaded with the CeSRRs is calculated by two approaches: by direct calculation with HFSS and by calculation with the effective medium theory; the results are in good agreement. An improved agreement is obtained using a fitting procedure for the permittivity tensor in the effective medium theory. The gain of a backward wave mode of the CeSRR-loaded waveguide interacting with an electron beam is calculated by two methods: by using the HFSS model and traveling wave tube theory; and by using a dispersion relation derived in the effective medium model. Results of the two methods are in very good agreement. The proposed all-metal structure may be useful in miniaturized vacuum electron devices. |
| first_indexed | 2024-09-23T15:36:20Z |
| format | Article |
| id | mit-1721.1/111190 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T15:36:20Z |
| publishDate | 2017 |
| publisher | American Institute of Physics (AIP) |
| record_format | dspace |
| spelling | mit-1721.1/1111902022-09-29T15:01:03Z Sub-wavelength waveguide loaded by a complementary electric metamaterial for vacuum electron devices Duan, Zhaoyun Hummelt, Jason Samuel Shapiro, Michael Temkin, Richard J Massachusetts Institute of Technology. Plasma Science and Fusion Center Duan, Zhaoyun Hummelt, Jason Samuel Shapiro, Michael Temkin, Richard J We report the electromagnetic properties of a waveguide loaded by complementary electric split ring resonators (CeSRRs) and the application of the waveguide in vacuum electronics. The S-parameters of the CeSRRs in free space are calculated using the HFSS code and are used to retrieve the effective permittivity and permeability in an effective medium theory. The dispersion relation of a waveguide loaded with the CeSRRs is calculated by two approaches: by direct calculation with HFSS and by calculation with the effective medium theory; the results are in good agreement. An improved agreement is obtained using a fitting procedure for the permittivity tensor in the effective medium theory. The gain of a backward wave mode of the CeSRR-loaded waveguide interacting with an electron beam is calculated by two methods: by using the HFSS model and traveling wave tube theory; and by using a dispersion relation derived in the effective medium model. Results of the two methods are in very good agreement. The proposed all-metal structure may be useful in miniaturized vacuum electron devices. United States. Department of Energy (Grant DE-SC0010075) 2017-09-13T15:49:01Z 2017-09-13T15:49:01Z 2014-10 2014-08 Article http://purl.org/eprint/type/JournalArticle 1070-664X 1089-7674 http://hdl.handle.net/1721.1/111190 Duan, Zhaoyun, et al. “Sub-Wavelength Waveguide Loaded by a Complementary Electric Metamaterial for Vacuum Electron Devices.” Physics of Plasmas 21, 10 (October 2014): 103301 © 2014 AIP Publishing https://orcid.org/0000-0002-3661-6267 https://orcid.org/0000-0001-9813-0177 en_US http://dx.doi.org/10.1063/1.4897392 Physics of Plasmas Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Institute of Physics (AIP) MIT Plasma Science & Fusion Center |
| spellingShingle | Duan, Zhaoyun Hummelt, Jason Samuel Shapiro, Michael Temkin, Richard J Sub-wavelength waveguide loaded by a complementary electric metamaterial for vacuum electron devices |
| title | Sub-wavelength waveguide loaded by a complementary electric metamaterial for vacuum electron devices |
| title_full | Sub-wavelength waveguide loaded by a complementary electric metamaterial for vacuum electron devices |
| title_fullStr | Sub-wavelength waveguide loaded by a complementary electric metamaterial for vacuum electron devices |
| title_full_unstemmed | Sub-wavelength waveguide loaded by a complementary electric metamaterial for vacuum electron devices |
| title_short | Sub-wavelength waveguide loaded by a complementary electric metamaterial for vacuum electron devices |
| title_sort | sub wavelength waveguide loaded by a complementary electric metamaterial for vacuum electron devices |
| url | http://hdl.handle.net/1721.1/111190 https://orcid.org/0000-0002-3661-6267 https://orcid.org/0000-0001-9813-0177 |
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