A New Dual Circularly Polarized Feed Employing a Dielectric Cylinder-Loaded Circular Waveguide Open End Fed by Crossed Dipoles
This paper presents a new dual circularly polarized feed that provides good axial ratio over wide angles and low cross-polarized radiation in backward direction. A circular waveguide open end is fed with two orthogonally polarized waves in phase quadrature by a pair of printed crossed dipoles and a...
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| Format: | Article |
| Language: | English |
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Wiley
2016-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2016/7570316 |
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| author | Jae-Hoon Bang Soon-Woo Choi Jae-Woo Noh Joo-Young Lim Dong-Hyun Kim Dae-Oh Kim Bierng-Chearl Ahn |
| author_facet | Jae-Hoon Bang Soon-Woo Choi Jae-Woo Noh Joo-Young Lim Dong-Hyun Kim Dae-Oh Kim Bierng-Chearl Ahn |
| author_sort | Jae-Hoon Bang |
| collection | DOAJ |
| description | This paper presents a new dual circularly polarized feed that provides good axial ratio over wide angles and low cross-polarized radiation in backward direction. A circular waveguide open end is fed with two orthogonally polarized waves in phase quadrature by a pair of printed crossed dipoles and a compact connectorized quadrature hybrid coupler. The waveguide aperture is loaded with a dielectric cylinder to reduce the cross-polarization beyond 90 degrees off the boresight. The fabricated feed has, at 5.5 GHz, 6.33-dBic copolarized gain, 3-dB beamwidth of 106°, 10-dB beamwidth of 195°, 3-dB axial ratio beamwidth of 215°, maximum cross-polarized gain of −21.4 dBic, and 27-dB port isolation. The reflection coefficient of the feed is less than −10 dB at 4.99–6.09 GHz. |
| format | Article |
| id | doaj-art-13d3032c4b80437892508a096551daf9 |
| institution | Kabale University |
| issn | 1687-5869 1687-5877 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Antennas and Propagation |
| spelling | doaj-art-13d3032c4b80437892508a096551daf92025-02-03T05:51:19ZengWileyInternational Journal of Antennas and Propagation1687-58691687-58772016-01-01201610.1155/2016/75703167570316A New Dual Circularly Polarized Feed Employing a Dielectric Cylinder-Loaded Circular Waveguide Open End Fed by Crossed DipolesJae-Hoon Bang0Soon-Woo Choi1Jae-Woo Noh2Joo-Young Lim3Dong-Hyun Kim4Dae-Oh Kim5Bierng-Chearl Ahn6Duta Technology Co. Ltd., Daejeon, Republic of KoreaDepartment of Radio and Communications Engineering, Chungbuk National University, Cheongju, Republic of KoreaDepartment of Radio and Communications Engineering, Chungbuk National University, Cheongju, Republic of KoreaDepartment of Radio and Communications Engineering, Chungbuk National University, Cheongju, Republic of KoreaNaro Space Center at the Korea Aerospace Research Institute, Goheung-gun, Chonnam, Republic of KoreaNaro Space Center at the Korea Aerospace Research Institute, Goheung-gun, Chonnam, Republic of KoreaDepartment of Radio and Communications Engineering, Chungbuk National University, Cheongju, Republic of KoreaThis paper presents a new dual circularly polarized feed that provides good axial ratio over wide angles and low cross-polarized radiation in backward direction. A circular waveguide open end is fed with two orthogonally polarized waves in phase quadrature by a pair of printed crossed dipoles and a compact connectorized quadrature hybrid coupler. The waveguide aperture is loaded with a dielectric cylinder to reduce the cross-polarization beyond 90 degrees off the boresight. The fabricated feed has, at 5.5 GHz, 6.33-dBic copolarized gain, 3-dB beamwidth of 106°, 10-dB beamwidth of 195°, 3-dB axial ratio beamwidth of 215°, maximum cross-polarized gain of −21.4 dBic, and 27-dB port isolation. The reflection coefficient of the feed is less than −10 dB at 4.99–6.09 GHz.http://dx.doi.org/10.1155/2016/7570316 |
| spellingShingle | Jae-Hoon Bang Soon-Woo Choi Jae-Woo Noh Joo-Young Lim Dong-Hyun Kim Dae-Oh Kim Bierng-Chearl Ahn A New Dual Circularly Polarized Feed Employing a Dielectric Cylinder-Loaded Circular Waveguide Open End Fed by Crossed Dipoles International Journal of Antennas and Propagation |
| title | A New Dual Circularly Polarized Feed Employing a Dielectric Cylinder-Loaded Circular Waveguide Open End Fed by Crossed Dipoles |
| title_full | A New Dual Circularly Polarized Feed Employing a Dielectric Cylinder-Loaded Circular Waveguide Open End Fed by Crossed Dipoles |
| title_fullStr | A New Dual Circularly Polarized Feed Employing a Dielectric Cylinder-Loaded Circular Waveguide Open End Fed by Crossed Dipoles |
| title_full_unstemmed | A New Dual Circularly Polarized Feed Employing a Dielectric Cylinder-Loaded Circular Waveguide Open End Fed by Crossed Dipoles |
| title_short | A New Dual Circularly Polarized Feed Employing a Dielectric Cylinder-Loaded Circular Waveguide Open End Fed by Crossed Dipoles |
| title_sort | new dual circularly polarized feed employing a dielectric cylinder loaded circular waveguide open end fed by crossed dipoles |
| url | http://dx.doi.org/10.1155/2016/7570316 |
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