Theoretical and Empirical Study of Spatial Power Focusing Effect for Sparse Arrays at Terahertz Band
Fuente:
arXiv
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| Autores principales: | , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| Materias: | |
| Acceso en línea: | |
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| _version_ | 1866914164210925568 |
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| author | He, Yongchao Zhang, Taihao Pan, Cunhua Ren, Hong Chen, Xianzhe Qiu, Tian Hua, Bingchang Wang, Jiangzhou |
| author_facet | He, Yongchao Zhang, Taihao Pan, Cunhua Ren, Hong Chen, Xianzhe Qiu, Tian Hua, Bingchang Wang, Jiangzhou |
| contents | This work investigates the spatial power focusing effect for large-scale sparse arrays at terahertz (THz) band, combining theoretical analysis with experimental validation. Specifically, based on a Green's function channel model, we analyze the power distribution along the $z$-axis, deriving a closed-form expression to characterize the focusing effect. Furthermore, the factors influencing the focusing effect, including phase noise and positional deviations, are theoretically analyzed and numerically simulated. Finally, a 300 GHz measurement platform based on a vector network analyzer (VNA) is constructed for experimental validation. The measurement results demonstrate close consistence with theoretical simulation results, confirming the spatial power focusing effect for sparse arrays. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_15221 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Theoretical and Empirical Study of Spatial Power Focusing Effect for Sparse Arrays at Terahertz Band He, Yongchao Zhang, Taihao Pan, Cunhua Ren, Hong Chen, Xianzhe Qiu, Tian Hua, Bingchang Wang, Jiangzhou Signal Processing This work investigates the spatial power focusing effect for large-scale sparse arrays at terahertz (THz) band, combining theoretical analysis with experimental validation. Specifically, based on a Green's function channel model, we analyze the power distribution along the $z$-axis, deriving a closed-form expression to characterize the focusing effect. Furthermore, the factors influencing the focusing effect, including phase noise and positional deviations, are theoretically analyzed and numerically simulated. Finally, a 300 GHz measurement platform based on a vector network analyzer (VNA) is constructed for experimental validation. The measurement results demonstrate close consistence with theoretical simulation results, confirming the spatial power focusing effect for sparse arrays. |
| title | Theoretical and Empirical Study of Spatial Power Focusing Effect for Sparse Arrays at Terahertz Band |
| topic | Signal Processing |
| url | https://arxiv.org/abs/2511.15221 |