High-Gain Quad Array of Nonuniform Helical Antennas
We present a design of a high-gain quad array of nonuniform helical antennas. The design is obtained by optimization of a 3-D numerical model of four nonuniform helical antennas placed above a ground plane, including a model of a feeding network, utilizing the method of moments with higher-order bas...
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2019/8421809 |
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| author | Jelena Lj. Dinkić Dragan I. Olćan Antonije R. Djordjević Alenka G. Zajić |
| author_facet | Jelena Lj. Dinkić Dragan I. Olćan Antonije R. Djordjević Alenka G. Zajić |
| author_sort | Jelena Lj. Dinkić |
| collection | DOAJ |
| description | We present a design of a high-gain quad array of nonuniform helical antennas. The design is obtained by optimization of a 3-D numerical model of four nonuniform helical antennas placed above a ground plane, including a model of a feeding network, utilizing the method of moments with higher-order basis functions. The gain of one optimal nonuniform helical antenna can be about 2.5 dB higher than the gain of a uniform helical antenna of the same axial length. Creating a 2×2 array further increases the gain up to about 6 dB. The resulting quad array fits into a box whose dimensions are 2.5×3.3×3.3 wavelengths, and the gain in the main radiating direction is about 20.5 dBi in the frequency range from 0.9 GHz to 1.1 GHz. The design is verified by measurements of a prototype of the quad array. |
| format | Article |
| id | doaj-art-cf011238e98a4e1aaa3dbc6382500941 |
| institution | Kabale University |
| issn | 1687-5869 1687-5877 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Antennas and Propagation |
| spelling | doaj-art-cf011238e98a4e1aaa3dbc63825009412025-02-03T01:22:22ZengWileyInternational Journal of Antennas and Propagation1687-58691687-58772019-01-01201910.1155/2019/84218098421809High-Gain Quad Array of Nonuniform Helical AntennasJelena Lj. Dinkić0Dragan I. Olćan1Antonije R. Djordjević2Alenka G. Zajić3School of Electrical Engineering, University of Belgrade, 11120 Belgrade, SerbiaSchool of Electrical Engineering, University of Belgrade, 11120 Belgrade, SerbiaSchool of Electrical Engineering, University of Belgrade, 11120 Belgrade, SerbiaSchool of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USAWe present a design of a high-gain quad array of nonuniform helical antennas. The design is obtained by optimization of a 3-D numerical model of four nonuniform helical antennas placed above a ground plane, including a model of a feeding network, utilizing the method of moments with higher-order basis functions. The gain of one optimal nonuniform helical antenna can be about 2.5 dB higher than the gain of a uniform helical antenna of the same axial length. Creating a 2×2 array further increases the gain up to about 6 dB. The resulting quad array fits into a box whose dimensions are 2.5×3.3×3.3 wavelengths, and the gain in the main radiating direction is about 20.5 dBi in the frequency range from 0.9 GHz to 1.1 GHz. The design is verified by measurements of a prototype of the quad array.http://dx.doi.org/10.1155/2019/8421809 |
| spellingShingle | Jelena Lj. Dinkić Dragan I. Olćan Antonije R. Djordjević Alenka G. Zajić High-Gain Quad Array of Nonuniform Helical Antennas International Journal of Antennas and Propagation |
| title | High-Gain Quad Array of Nonuniform Helical Antennas |
| title_full | High-Gain Quad Array of Nonuniform Helical Antennas |
| title_fullStr | High-Gain Quad Array of Nonuniform Helical Antennas |
| title_full_unstemmed | High-Gain Quad Array of Nonuniform Helical Antennas |
| title_short | High-Gain Quad Array of Nonuniform Helical Antennas |
| title_sort | high gain quad array of nonuniform helical antennas |
| url | http://dx.doi.org/10.1155/2019/8421809 |
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