{"ID":2839444,"CreatedAt":"2026-06-01T04:54:23.091178241Z","UpdatedAt":"2026-06-01T04:54:23.091178241Z","DeletedAt":null,"paper_url":"https://arxiv.org/abs/2511.15221","arxiv_id":"2511.15221","title":"Theoretical and Empirical Study of Spatial Power Focusing Effect for Sparse Arrays at Terahertz Band","abstract":"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.","short_abstract":"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...","url_abs":"https://arxiv.org/abs/2511.15221","url_pdf":"https://arxiv.org/pdf/2511.15221v1","authors":"[\"Yongchao He\",\"Taihao Zhang\",\"Cunhua Pan\",\"Hong Ren\",\"Xianzhe Chen\",\"Tian Qiu\",\"Bingchang Hua\",\"Jiangzhou Wang\"]","published":"2025-11-19T08:15:48Z","proceeding":"eess.SP","tasks":"[\"eess.SP\"]","methods":"[]","has_code":false}