A 2-bit Ku-band Digital Metasurface with Infinitely Scalable Capability
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arXiv
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| Main Authors: | , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866909860117872640 |
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| author | Zong, Xiaocun Shi, Hao Yang, Fan Liu, Yong Xu, Shenheng Li, Maokun |
| author_facet | Zong, Xiaocun Shi, Hao Yang, Fan Liu, Yong Xu, Shenheng Li, Maokun |
| contents | In this letter, we present the design and implementation of a 2-bit digaital metasurface operating in the Ku-band, engineered to exhibit advanced polarization conversion characteristics and support dual-polarization control for both X- and Y-polarizations. To address the challenge of array size scalability hindered by extensive DC control routing in 2-bit metasurfaces, we propose a novel RF-DC separation architecture. This approach integrates the metasurface and DC control circuitry onto separate printed circuit boards (PCBs), interconnected via pin cascading, enabling theoretically unlimited two-dimensional array expansion. To validate this design, a ${4\times16 \times 16}$ metasurface prototype was fabricated and experimentally evaluated, which can achieve a gain of 28.3dB and an aperture efficiency of 21.02\%, confirming the scalability and performance of the proposed architecture. The developed 2-bit high-gain metasurface offers significant reference value for applications in long-distance communication and radar detection. Furthermore, the RF-DC separation architecture introduces a pioneering framework for large-scale metasurface deployment in practical engineering scenarios, enhancing design flexibility and scalability. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_14367 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | A 2-bit Ku-band Digital Metasurface with Infinitely Scalable Capability Zong, Xiaocun Shi, Hao Yang, Fan Liu, Yong Xu, Shenheng Li, Maokun Optics Applied Physics In this letter, we present the design and implementation of a 2-bit digaital metasurface operating in the Ku-band, engineered to exhibit advanced polarization conversion characteristics and support dual-polarization control for both X- and Y-polarizations. To address the challenge of array size scalability hindered by extensive DC control routing in 2-bit metasurfaces, we propose a novel RF-DC separation architecture. This approach integrates the metasurface and DC control circuitry onto separate printed circuit boards (PCBs), interconnected via pin cascading, enabling theoretically unlimited two-dimensional array expansion. To validate this design, a ${4\times16 \times 16}$ metasurface prototype was fabricated and experimentally evaluated, which can achieve a gain of 28.3dB and an aperture efficiency of 21.02\%, confirming the scalability and performance of the proposed architecture. The developed 2-bit high-gain metasurface offers significant reference value for applications in long-distance communication and radar detection. Furthermore, the RF-DC separation architecture introduces a pioneering framework for large-scale metasurface deployment in practical engineering scenarios, enhancing design flexibility and scalability. |
| title | A 2-bit Ku-band Digital Metasurface with Infinitely Scalable Capability |
| topic | Optics Applied Physics |
| url | https://arxiv.org/abs/2510.14367 |