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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2512.06264 |
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| _version_ | 1866909975205380096 |
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| author | Sun, Shang-Yi Ding, Can Sun, Hai-Han Monti, Alessio Guo, Y. Jay |
| author_facet | Sun, Shang-Yi Ding, Can Sun, Hai-Han Monti, Alessio Guo, Y. Jay |
| contents | This work presents a wideband tri-band shared-aperture antenna array covering the 5G mid-band and 6G centimetric band. The challenge of scattering and coupling suppression is holistically addressed across the wide bands. Guided by characteristic mode analysis (CMA), a segmented spiral radiator is developed to mitigate high-frequency scattering and coupling while maintaining low-frequency radiation performance. Compared with a conventional tube radiator, the proposed spiral achieves a reduced radar cross-section (RCS) over 4.7-21.5 GHz (128.2%). With the aid of serial resonators, the segmented-spiral dipole achieves impedance matching in the low band (LB, 3.05-4.68 GHz, 42.2%), covering the 5G band (3.3-4.2 GHz), while additional suppressors further reduce cross-band coupling. The middle band (MB) and high band (HB) antennas operate at 6.2-10.0 GHz (46.9%) and 10.0-15.6 GHz (43.8%), respectively, collectively covering the anticipated 5G-Advanced and 6G bands (6.425-15.35 GHz). Both the MB and HB antennas employ a planar magnetoelectric (ME) dipole structure to avoid common-mode resonances within the LB and MB and to minimize cross-band scattering in the HB. The proposed array maintains undistorted radiation patterns and better than 20 dB port isolation between any two ports across all three bands. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_06264 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | A Wideband Tri-Band Shared-Aperture Antenna Array for 5G and 6G Applications Sun, Shang-Yi Ding, Can Sun, Hai-Han Monti, Alessio Guo, Y. Jay Applied Physics This work presents a wideband tri-band shared-aperture antenna array covering the 5G mid-band and 6G centimetric band. The challenge of scattering and coupling suppression is holistically addressed across the wide bands. Guided by characteristic mode analysis (CMA), a segmented spiral radiator is developed to mitigate high-frequency scattering and coupling while maintaining low-frequency radiation performance. Compared with a conventional tube radiator, the proposed spiral achieves a reduced radar cross-section (RCS) over 4.7-21.5 GHz (128.2%). With the aid of serial resonators, the segmented-spiral dipole achieves impedance matching in the low band (LB, 3.05-4.68 GHz, 42.2%), covering the 5G band (3.3-4.2 GHz), while additional suppressors further reduce cross-band coupling. The middle band (MB) and high band (HB) antennas operate at 6.2-10.0 GHz (46.9%) and 10.0-15.6 GHz (43.8%), respectively, collectively covering the anticipated 5G-Advanced and 6G bands (6.425-15.35 GHz). Both the MB and HB antennas employ a planar magnetoelectric (ME) dipole structure to avoid common-mode resonances within the LB and MB and to minimize cross-band scattering in the HB. The proposed array maintains undistorted radiation patterns and better than 20 dB port isolation between any two ports across all three bands. |
| title | A Wideband Tri-Band Shared-Aperture Antenna Array for 5G and 6G Applications |
| topic | Applied Physics |
| url | https://arxiv.org/abs/2512.06264 |