MODELING OF RING-SLOT-ELEMENT FLOQUET CELL FOR REFLECTARRAY ANTENNAS
The ring-slot-element cell for reflectarray antennas is investigated. The mathematical model of the unit cell is based on the integral equation that is solved by the moment method with the use of the spectral domain Green’s function. Coaxial-line higher modes expressed in terms of cylindrical functi...
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| Format: | Article |
| Language: | Russian |
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Saint Petersburg Electrotechnical University "LETI"
2018-10-01
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| Series: | Известия высших учебных заведений России: Радиоэлектроника |
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| Online Access: | https://re.eltech.ru/jour/article/view/256 |
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| _version_ | 1849394901097119744 |
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| author | Svyatoslav V. Ballandovich Grigory A. Kostikov Yury G. Antonov Liubov M. Liubina |
| author_facet | Svyatoslav V. Ballandovich Grigory A. Kostikov Yury G. Antonov Liubov M. Liubina |
| author_sort | Svyatoslav V. Ballandovich |
| collection | DOAJ |
| description | The ring-slot-element cell for reflectarray antennas is investigated. The mathematical model of the unit cell is based on the integral equation that is solved by the moment method with the use of the spectral domain Green’s function. Coaxial-line higher modes expressed in terms of cylindrical functions are used as the basis for magnet-current representation. It is shown that “stricken” frequencies at which resonance modes occur are an inherent part of slot elements. These frequencies are determined by the Green’s function poles. Moreover, the lowest resonance mode may occur in the operating band under certain conditions. Reflection-phase dependencies on the ring-slot size are provided, demonstrating that at “stricken” frequencies the unit cell does not operate properly. Field plots are presented, which show that the resonance-mode field distribution on the ring slot is significantly different from the normal-mode field distribution. It is found that the “stricken” frequencies might be shifted beyond the operating band by means of thorough selection of unit-cell geometric parameters. |
| format | Article |
| id | doaj-art-0627b3c65b284df8aeaaefec10748eef |
| institution | Kabale University |
| issn | 1993-8985 2658-4794 |
| language | Russian |
| publishDate | 2018-10-01 |
| publisher | Saint Petersburg Electrotechnical University "LETI" |
| record_format | Article |
| series | Известия высших учебных заведений России: Радиоэлектроника |
| spelling | doaj-art-0627b3c65b284df8aeaaefec10748eef2025-08-20T03:39:49ZrusSaint Petersburg Electrotechnical University "LETI"Известия высших учебных заведений России: Радиоэлектроника1993-89852658-47942018-10-0105253210.32603/1993-8985-2018-21-5-25-32245MODELING OF RING-SLOT-ELEMENT FLOQUET CELL FOR REFLECTARRAY ANTENNASSvyatoslav V. Ballandovich0Grigory A. Kostikov1Yury G. Antonov2Liubov M. Liubina3Saint Petersburg Electrotechnical University "LETI"Saint Petersburg Electrotechnical University "LETI"Saint Petersburg Electrotechnical University "LETI"Saint Petersburg Electrotechnical University "LETI"The ring-slot-element cell for reflectarray antennas is investigated. The mathematical model of the unit cell is based on the integral equation that is solved by the moment method with the use of the spectral domain Green’s function. Coaxial-line higher modes expressed in terms of cylindrical functions are used as the basis for magnet-current representation. It is shown that “stricken” frequencies at which resonance modes occur are an inherent part of slot elements. These frequencies are determined by the Green’s function poles. Moreover, the lowest resonance mode may occur in the operating band under certain conditions. Reflection-phase dependencies on the ring-slot size are provided, demonstrating that at “stricken” frequencies the unit cell does not operate properly. Field plots are presented, which show that the resonance-mode field distribution on the ring slot is significantly different from the normal-mode field distribution. It is found that the “stricken” frequencies might be shifted beyond the operating band by means of thorough selection of unit-cell geometric parameters.https://re.eltech.ru/jour/article/view/256reflectarray antennasintegral equationslot elementsmethod of momentsspectral-domain green’s functionspectral domainring element |
| spellingShingle | Svyatoslav V. Ballandovich Grigory A. Kostikov Yury G. Antonov Liubov M. Liubina MODELING OF RING-SLOT-ELEMENT FLOQUET CELL FOR REFLECTARRAY ANTENNAS Известия высших учебных заведений России: Радиоэлектроника reflectarray antennas integral equation slot elements method of moments spectral-domain green’s function spectral domain ring element |
| title | MODELING OF RING-SLOT-ELEMENT FLOQUET CELL FOR REFLECTARRAY ANTENNAS |
| title_full | MODELING OF RING-SLOT-ELEMENT FLOQUET CELL FOR REFLECTARRAY ANTENNAS |
| title_fullStr | MODELING OF RING-SLOT-ELEMENT FLOQUET CELL FOR REFLECTARRAY ANTENNAS |
| title_full_unstemmed | MODELING OF RING-SLOT-ELEMENT FLOQUET CELL FOR REFLECTARRAY ANTENNAS |
| title_short | MODELING OF RING-SLOT-ELEMENT FLOQUET CELL FOR REFLECTARRAY ANTENNAS |
| title_sort | modeling of ring slot element floquet cell for reflectarray antennas |
| topic | reflectarray antennas integral equation slot elements method of moments spectral-domain green’s function spectral domain ring element |
| url | https://re.eltech.ru/jour/article/view/256 |
| work_keys_str_mv | AT svyatoslavvballandovich modelingofringslotelementfloquetcellforreflectarrayantennas AT grigoryakostikov modelingofringslotelementfloquetcellforreflectarrayantennas AT yurygantonov modelingofringslotelementfloquetcellforreflectarrayantennas AT liubovmliubina modelingofringslotelementfloquetcellforreflectarrayantennas |