Compensation of Nonlinearity in Superconducting Transmission Line by Geometrical Restructuring
Superconductors are popular for microwave engineers because they are high performance, high selectivity, and low volume. However, the use of superconductors is limited due to their inherent nonlinearity. Intrinsic nonlinearity in superconductors is due to the dependence of surface current density on...
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| Veröffentlicht in: | IEEE transactions on applied superconductivity 2021-12, Vol.31 (9), p.1-8 |
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| creator | Panahi, Mahsa Javadzadeh, Seyed Mohammd Hasan |
| description | Superconductors are popular for microwave engineers because they are high performance, high selectivity, and low volume. However, the use of superconductors is limited due to their inherent nonlinearity. Intrinsic nonlinearity in superconductors is due to the dependence of surface current density on the depth of London penetration in them. This leads to adverse effects such as intermodulation distortion (IMD) and the production of a third harmonic in a superconductor. In this article, we intend to improve the effects of nonlinearity by modifying the superconducting geometric structure, which we call the method of geometric reconstruction. To achieve this, we first designed a superconducting transmission line (TL), and then created slots on the superconducting TL to improve the IMD and the third harmonic. Using this method, we managed to reduce the level of the third harmonic from -6 to -31 dBm. To verify the results, after simulating the slotted superconducting TL in ADS software, simulation and solving of London equations using three-dimensional-FEM in COMSOL software has been done again. |
| doi_str_mv | 10.1109/TASC.2021.3116347 |
| format | Article |
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However, the use of superconductors is limited due to their inherent nonlinearity. Intrinsic nonlinearity in superconductors is due to the dependence of surface current density on the depth of London penetration in them. This leads to adverse effects such as intermodulation distortion (IMD) and the production of a third harmonic in a superconductor. In this article, we intend to improve the effects of nonlinearity by modifying the superconducting geometric structure, which we call the method of geometric reconstruction. To achieve this, we first designed a superconducting transmission line (TL), and then created slots on the superconducting TL to improve the IMD and the third harmonic. Using this method, we managed to reduce the level of the third harmonic from -6 to -31 dBm. To verify the results, after simulating the slotted superconducting TL in ADS software, simulation and solving of London equations using three-dimensional-FEM in COMSOL software has been done again.</description><identifier>ISSN: 1051-8223</identifier><identifier>EISSN: 1558-2515</identifier><identifier>DOI: 10.1109/TASC.2021.3116347</identifier><identifier>CODEN: ITASE9</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject>Current density ; Equivalent circuits ; geometric restructuring ; High-temperature superconductors ; Intermodulation distortion ; intermodulation distortion (IMD) ; Nonlinearity ; Selectivity ; Software ; superconducting transmission line (TL) ; Superconducting transmission lines ; Superconductivity ; Superconductors ; Surface impedance ; third harmonic ; Transmission lines</subject><ispartof>IEEE transactions on applied superconductivity, 2021-12, Vol.31 (9), p.1-8</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. 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However, the use of superconductors is limited due to their inherent nonlinearity. Intrinsic nonlinearity in superconductors is due to the dependence of surface current density on the depth of London penetration in them. This leads to adverse effects such as intermodulation distortion (IMD) and the production of a third harmonic in a superconductor. In this article, we intend to improve the effects of nonlinearity by modifying the superconducting geometric structure, which we call the method of geometric reconstruction. To achieve this, we first designed a superconducting transmission line (TL), and then created slots on the superconducting TL to improve the IMD and the third harmonic. Using this method, we managed to reduce the level of the third harmonic from -6 to -31 dBm. To verify the results, after simulating the slotted superconducting TL in ADS software, simulation and solving of London equations using three-dimensional-FEM in COMSOL software has been done again.</description><subject>Current density</subject><subject>Equivalent circuits</subject><subject>geometric restructuring</subject><subject>High-temperature superconductors</subject><subject>Intermodulation distortion</subject><subject>intermodulation distortion (IMD)</subject><subject>Nonlinearity</subject><subject>Selectivity</subject><subject>Software</subject><subject>superconducting transmission line (TL)</subject><subject>Superconducting transmission lines</subject><subject>Superconductivity</subject><subject>Superconductors</subject><subject>Surface impedance</subject><subject>third harmonic</subject><subject>Transmission lines</subject><issn>1051-8223</issn><issn>1558-2515</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNo9kE1LwzAYx4MoOF8-gHgJeO7Mk5c1PY6iUxgKrmdD2qaSsSY1aQ_79qZseHqew-__wh-hByBLAFI8V-tduaSEwpIBrBjPL9AChJAZFSAu008EZJJSdo1uYtwTAlxysUDfpe8H46IerXfYd_jDu4N1Rgc7HrF1eDcNJjTetVMzWveDq6Bd7G2MM79NJK6PeGN8b8ZgG33AXyaOIcFTSPgduur0IZr7871F1etLVb5l28_Ne7neZg3lYkwlte5EQSEXeZd6tVySXPBGM0aBtZrTwtCaMlkQSmXdgkj9C86l6GrZCXaLnk62Q_C_Uyqg9n4KLiUqmmxXkFNSJApOVBN8jMF0agi21-GogKh5RTWvqOYV1XnFpHk8aawx5p8vhKApn_0BGa9uHA</recordid><startdate>20211201</startdate><enddate>20211201</enddate><creator>Panahi, Mahsa</creator><creator>Javadzadeh, Seyed Mohammd Hasan</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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However, the use of superconductors is limited due to their inherent nonlinearity. Intrinsic nonlinearity in superconductors is due to the dependence of surface current density on the depth of London penetration in them. This leads to adverse effects such as intermodulation distortion (IMD) and the production of a third harmonic in a superconductor. In this article, we intend to improve the effects of nonlinearity by modifying the superconducting geometric structure, which we call the method of geometric reconstruction. To achieve this, we first designed a superconducting transmission line (TL), and then created slots on the superconducting TL to improve the IMD and the third harmonic. Using this method, we managed to reduce the level of the third harmonic from -6 to -31 dBm. 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| source | IEEE Electronic Library (IEL) |
| subjects | Current density Equivalent circuits geometric restructuring High-temperature superconductors Intermodulation distortion intermodulation distortion (IMD) Nonlinearity Selectivity Software superconducting transmission line (TL) Superconducting transmission lines Superconductivity Superconductors Surface impedance third harmonic Transmission lines |
| title | Compensation of Nonlinearity in Superconducting Transmission Line by Geometrical Restructuring |
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