{"title":"Mechanically Steerable Simultaneous Multibeam Transmitarray Design by Analytical Multifocal Approach","authors":"Francesco Alessio Dicandia;Simone Genovesi","doi":"10.1109/TAP.2024.3485504","DOIUrl":null,"url":null,"abstract":"A novel design methodology for improving the radiative performance of single-feed simultaneous multibeam transmitarrays (SMBTAs) is presented. Concurrent multibeam scanning is achieved by a linear displacement of the feeder along a line parallel to the transmitarray (TA) surface. The proposed synthesis of the passive TA phase distribution relies on an analytical multifocal (MF) scheme exploiting the minimum mean square error (MMSE) algorithm. A thorough numerical investigation that examines different TA sizes proves the benefits offered by the investigated strategy. Remarkable performance enhancement in terms of scan loss and peak sidelobe level (PSLL) are achieved with respect to the conventional single-focus phase correction approach. Furthermore, a detailed statistical analysis verifies the robustness of the adopted solution. Finally, two dielectric-based TAs radiating a simultaneous dual-main beam at 28 GHz are manufactured and tested to assess the reliability of the proposed methodology.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 12","pages":"9129-9142"},"PeriodicalIF":4.6000,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10738313","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Transactions on Antennas and Propagation","FirstCategoryId":"94","ListUrlMain":"https://ieeexplore.ieee.org/document/10738313/","RegionNum":1,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
A novel design methodology for improving the radiative performance of single-feed simultaneous multibeam transmitarrays (SMBTAs) is presented. Concurrent multibeam scanning is achieved by a linear displacement of the feeder along a line parallel to the transmitarray (TA) surface. The proposed synthesis of the passive TA phase distribution relies on an analytical multifocal (MF) scheme exploiting the minimum mean square error (MMSE) algorithm. A thorough numerical investigation that examines different TA sizes proves the benefits offered by the investigated strategy. Remarkable performance enhancement in terms of scan loss and peak sidelobe level (PSLL) are achieved with respect to the conventional single-focus phase correction approach. Furthermore, a detailed statistical analysis verifies the robustness of the adopted solution. Finally, two dielectric-based TAs radiating a simultaneous dual-main beam at 28 GHz are manufactured and tested to assess the reliability of the proposed methodology.
期刊介绍:
IEEE Transactions on Antennas and Propagation includes theoretical and experimental advances in antennas, including design and development, and in the propagation of electromagnetic waves, including scattering, diffraction, and interaction with continuous media; and applications pertaining to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques