Compact Normal-Mode Hybrid-Helix Antenna and Its Application to Circularly Polarized Yagi Array
This communication presents a compact normal-mode hybrid-helix antenna of circular polarization and its Yagi array configuration. By cascading two types of helices with different turn spacings and radii, the hybrid-helix antenna element effectively alleviates the limitation of the traditional normal...
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| Veröffentlicht in: | IEEE transactions on antennas and propagation 2021-09, Vol.69 (9), p.5986-5991 |
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| container_end_page | 5991 |
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| container_issue | 9 |
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| container_title | IEEE transactions on antennas and propagation |
| container_volume | 69 |
| creator | Chen, Zhuozhu Hu, Zhenxin Zhang, Jun Zhang, Gary Guo, Chunbing |
| description | This communication presents a compact normal-mode hybrid-helix antenna of circular polarization and its Yagi array configuration. By cascading two types of helices with different turn spacings and radii, the hybrid-helix antenna element effectively alleviates the limitation of the traditional normal-mode helix antenna that is challenging to simultaneously achieve circular polarization and high radiation efficiency. The proposed hybrid antenna element is also further extended for a Yagi array to obtain the endfire circular polarization. For experimental verification, the hybrid-helix array is fabricated using the selective laser melting (SLM) technique. Measured results agree well with simulated ones, showing that the impedance of the normal-mode helix array can cover the 10 dB impedance bandwidth from 2.27-2.47 GHz, and the axial ratio of less than 3 dB and the radiation efficiency of higher than 90% can be achieved within the whole operating bandwidth. |
| doi_str_mv | 10.1109/TAP.2021.3069515 |
| format | Article |
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By cascading two types of helices with different turn spacings and radii, the hybrid-helix antenna element effectively alleviates the limitation of the traditional normal-mode helix antenna that is challenging to simultaneously achieve circular polarization and high radiation efficiency. The proposed hybrid antenna element is also further extended for a Yagi array to obtain the endfire circular polarization. For experimental verification, the hybrid-helix array is fabricated using the selective laser melting (SLM) technique. Measured results agree well with simulated ones, showing that the impedance of the normal-mode helix array can cover the 10 dB impedance bandwidth from 2.27-2.47 GHz, and the axial ratio of less than 3 dB and the radiation efficiency of higher than 90% can be achieved within the whole operating bandwidth.</description><identifier>ISSN: 0018-926X</identifier><identifier>EISSN: 1558-2221</identifier><identifier>DOI: 10.1109/TAP.2021.3069515</identifier><identifier>CODEN: IETPAK</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject>Antenna array ; Antenna arrays ; Antennas ; Bandwidths ; Circular polarization ; Dipole antennas ; endfire ; Helical antennas ; Helices ; helix antenna ; Impedance ; Laser beam melting ; Mobile antennas ; Polarization ; Radiation ; Resistance</subject><ispartof>IEEE transactions on antennas and propagation, 2021-09, Vol.69 (9), p.5986-5991</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. 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By cascading two types of helices with different turn spacings and radii, the hybrid-helix antenna element effectively alleviates the limitation of the traditional normal-mode helix antenna that is challenging to simultaneously achieve circular polarization and high radiation efficiency. The proposed hybrid antenna element is also further extended for a Yagi array to obtain the endfire circular polarization. For experimental verification, the hybrid-helix array is fabricated using the selective laser melting (SLM) technique. Measured results agree well with simulated ones, showing that the impedance of the normal-mode helix array can cover the 10 dB impedance bandwidth from 2.27-2.47 GHz, and the axial ratio of less than 3 dB and the radiation efficiency of higher than 90% can be achieved within the whole operating bandwidth.</description><subject>Antenna array</subject><subject>Antenna arrays</subject><subject>Antennas</subject><subject>Bandwidths</subject><subject>Circular polarization</subject><subject>Dipole antennas</subject><subject>endfire</subject><subject>Helical antennas</subject><subject>Helices</subject><subject>helix antenna</subject><subject>Impedance</subject><subject>Laser beam melting</subject><subject>Mobile antennas</subject><subject>Polarization</subject><subject>Radiation</subject><subject>Resistance</subject><issn>0018-926X</issn><issn>1558-2221</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNo9kM1LwzAYxoMoOKd3wUvAc2e-2jTHUtQN_NhhBz2FNE0lo2tqkoH1rzdjw9PDC7_neeEHwC1GC4yReNhU6wVBBC8oKkSO8zMww3leZoQQfA5mCOEyE6T4uARXIWzTyUrGZkDWbjcqHeGb8zvVZ6-uNXA5Nd622dL09gdWQzTDoKAaWriKAVbj2FutonUDjA7W1ut9r3w_wbVLaX9NCz_Vl4WV92q6Bhed6oO5OeUcbJ4eN_Uye3l_XtXVS6aJwDFrEONMaEoY1x3ucIPyRhDOS0aYoLpAbcpSt4UqOKe8UB2lDTYdER1SjNE5uD_Ojt59702Icuv2fkgfJcmLMg2VVCQKHSntXQjedHL0dqf8JDGSB4syWZQHi_JkMVXujhVrjPnHBUtWsaB_GehspQ</recordid><startdate>20210901</startdate><enddate>20210901</enddate><creator>Chen, Zhuozhu</creator><creator>Hu, Zhenxin</creator><creator>Zhang, Jun</creator><creator>Zhang, Gary</creator><creator>Guo, Chunbing</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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By cascading two types of helices with different turn spacings and radii, the hybrid-helix antenna element effectively alleviates the limitation of the traditional normal-mode helix antenna that is challenging to simultaneously achieve circular polarization and high radiation efficiency. The proposed hybrid antenna element is also further extended for a Yagi array to obtain the endfire circular polarization. For experimental verification, the hybrid-helix array is fabricated using the selective laser melting (SLM) technique. Measured results agree well with simulated ones, showing that the impedance of the normal-mode helix array can cover the 10 dB impedance bandwidth from 2.27-2.47 GHz, and the axial ratio of less than 3 dB and the radiation efficiency of higher than 90% can be achieved within the whole operating bandwidth.</abstract><cop>New York</cop><pub>IEEE</pub><doi>10.1109/TAP.2021.3069515</doi><tpages>6</tpages><orcidid>https://orcid.org/0000-0002-6025-9909</orcidid><orcidid>https://orcid.org/0000-0002-5831-9423</orcidid><orcidid>https://orcid.org/0000-0002-5026-0498</orcidid></addata></record> |
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| ispartof | IEEE transactions on antennas and propagation, 2021-09, Vol.69 (9), p.5986-5991 |
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| source | IEEE Electronic Library (IEL) |
| subjects | Antenna array Antenna arrays Antennas Bandwidths Circular polarization Dipole antennas endfire Helical antennas Helices helix antenna Impedance Laser beam melting Mobile antennas Polarization Radiation Resistance |
| title | Compact Normal-Mode Hybrid-Helix Antenna and Its Application to Circularly Polarized Yagi Array |
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