A Center-Fed Dual-Polarized Parallel-Plate Waveguide Slot Array Antenna Based on a Feeding Waveguide With Centered Longitudinal Feeding Slots
A dual-polarized paralle-plate waveguide slot array antenna operating at 24.5 GHz band is proposed in this paper. The radiating panel using a 5mm-thick expanded dielectric substrate (<inline-formula> <tex-math notation="LaTeX">$\epsilon _{r}=1.12$ </tex-math></inline-f...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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IEEE
2023-01-01
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| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10235965/ |
| _version_ | 1827821700630183936 |
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| author | Huanqian Xiong Jiro Hirokawa Takashi Tomura |
| author_facet | Huanqian Xiong Jiro Hirokawa Takashi Tomura |
| author_sort | Huanqian Xiong |
| collection | DOAJ |
| description | A dual-polarized paralle-plate waveguide slot array antenna operating at 24.5 GHz band is proposed in this paper. The radiating panel using a 5mm-thick expanded dielectric substrate (<inline-formula> <tex-math notation="LaTeX">$\epsilon _{r}=1.12$ </tex-math></inline-formula>) consists of two orthogonally oriented <inline-formula> <tex-math notation="LaTeX">$20\times 19$ </tex-math></inline-formula> radiating slot arrays, where the slots are positioned collinearly. The centered longitudinal feeding slots are introduced into the feeding waveguides, which offer improved aperture efficiency and higher cross-polarization discrimination (XPD) compared to the conventional tilted feeding slot approach. The antenna achieves a remarkable simulated radiation efficiency of over 95% within the operation bandwidth. A prototype antenna is fabricated and verified through measurements. The measured results demonstrate an impedance bandwidth of 13%, with reflection below -10 dB. Moreover, the antenna achieves a simulated peak aperture efficiency of 54% and a measured peak antenna efficiency of 40%. The measured XPD of the antenna prototype exceeds 26 dB. |
| first_indexed | 2024-03-12T01:47:49Z |
| format | Article |
| id | doaj.art-d6b5ada65c4a4f56b68d78d861772071 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-03-12T01:47:49Z |
| publishDate | 2023-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-d6b5ada65c4a4f56b68d78d8617720712023-09-08T23:01:46ZengIEEEIEEE Access2169-35362023-01-0111937939380310.1109/ACCESS.2023.331054210235965A Center-Fed Dual-Polarized Parallel-Plate Waveguide Slot Array Antenna Based on a Feeding Waveguide With Centered Longitudinal Feeding SlotsHuanqian Xiong0https://orcid.org/0009-0004-8998-7071Jiro Hirokawa1https://orcid.org/0000-0001-8720-6180Takashi Tomura2https://orcid.org/0000-0002-9272-8298Department of Electrical and Electronic Engineering, Tokyo Institute of Technology, Tokyo, JapanDepartment of Electrical and Electronic Engineering, Tokyo Institute of Technology, Tokyo, JapanDepartment of Electrical and Electronic Engineering, Tokyo Institute of Technology, Tokyo, JapanA dual-polarized paralle-plate waveguide slot array antenna operating at 24.5 GHz band is proposed in this paper. The radiating panel using a 5mm-thick expanded dielectric substrate (<inline-formula> <tex-math notation="LaTeX">$\epsilon _{r}=1.12$ </tex-math></inline-formula>) consists of two orthogonally oriented <inline-formula> <tex-math notation="LaTeX">$20\times 19$ </tex-math></inline-formula> radiating slot arrays, where the slots are positioned collinearly. The centered longitudinal feeding slots are introduced into the feeding waveguides, which offer improved aperture efficiency and higher cross-polarization discrimination (XPD) compared to the conventional tilted feeding slot approach. The antenna achieves a remarkable simulated radiation efficiency of over 95% within the operation bandwidth. A prototype antenna is fabricated and verified through measurements. The measured results demonstrate an impedance bandwidth of 13%, with reflection below -10 dB. Moreover, the antenna achieves a simulated peak aperture efficiency of 54% and a measured peak antenna efficiency of 40%. The measured XPD of the antenna prototype exceeds 26 dB.https://ieeexplore.ieee.org/document/10235965/Dual-polarized antennaparallel-plate waveguide antennaplanar arrayslot antenna |
| spellingShingle | Huanqian Xiong Jiro Hirokawa Takashi Tomura A Center-Fed Dual-Polarized Parallel-Plate Waveguide Slot Array Antenna Based on a Feeding Waveguide With Centered Longitudinal Feeding Slots IEEE Access Dual-polarized antenna parallel-plate waveguide antenna planar array slot antenna |
| title | A Center-Fed Dual-Polarized Parallel-Plate Waveguide Slot Array Antenna Based on a Feeding Waveguide With Centered Longitudinal Feeding Slots |
| title_full | A Center-Fed Dual-Polarized Parallel-Plate Waveguide Slot Array Antenna Based on a Feeding Waveguide With Centered Longitudinal Feeding Slots |
| title_fullStr | A Center-Fed Dual-Polarized Parallel-Plate Waveguide Slot Array Antenna Based on a Feeding Waveguide With Centered Longitudinal Feeding Slots |
| title_full_unstemmed | A Center-Fed Dual-Polarized Parallel-Plate Waveguide Slot Array Antenna Based on a Feeding Waveguide With Centered Longitudinal Feeding Slots |
| title_short | A Center-Fed Dual-Polarized Parallel-Plate Waveguide Slot Array Antenna Based on a Feeding Waveguide With Centered Longitudinal Feeding Slots |
| title_sort | center fed dual polarized parallel plate waveguide slot array antenna based on a feeding waveguide with centered longitudinal feeding slots |
| topic | Dual-polarized antenna parallel-plate waveguide antenna planar array slot antenna |
| url | https://ieeexplore.ieee.org/document/10235965/ |
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