{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,23]],"date-time":"2025-12-23T10:32:17Z","timestamp":1766485937004,"version":"build-2065373602"},"reference-count":31,"publisher":"MDPI AG","issue":"18","license":[{"start":{"date-parts":[[2023,9,13]],"date-time":"2023-09-13T00:00:00Z","timestamp":1694563200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Natural Science Foundation of China","award":["62371321","HZKY20220559","2021YFB3900300","6142411212106"],"award-info":[{"award-number":["62371321","HZKY20220559","2021YFB3900300","6142411212106"]}]},{"name":"Ministry of Education Science and Technology Chunhui Plan Project","award":["62371321","HZKY20220559","2021YFB3900300","6142411212106"],"award-info":[{"award-number":["62371321","HZKY20220559","2021YFB3900300","6142411212106"]}]},{"name":"National Key R&amp;D Program of China","award":["62371321","HZKY20220559","2021YFB3900300","6142411212106"],"award-info":[{"award-number":["62371321","HZKY20220559","2021YFB3900300","6142411212106"]}]},{"name":"National Key Laboratory Foundation 2021-JCJQ-LB-006","award":["62371321","HZKY20220559","2021YFB3900300","6142411212106"],"award-info":[{"award-number":["62371321","HZKY20220559","2021YFB3900300","6142411212106"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>A wideband superdirective array, composed of a two-element circular monopole configuration, is introduced. The monopoles are placed in close proximity, facing each other on a metal ground. To ensure good matching at high frequencies, two pairs of elliptical patches are added to the sides of the monopoles, enhancing the surface current of the circular patch for wideband performance. To achieve equal amplitude excitation and the desired phase difference, a wideband power divider with a phase shifter is designed to feed the antenna array. Simulation and measurement results demonstrate that the proposed wideband antenna array, operating within the frequency range of 2.94\u20137.93 GHz, exhibits a maximum directivity of 8.36\u201310 dBi, with an antenna efficiency ranging from 47.86 to 83.18% across the bandwidth. The proposed array has the advantages of miniaturization, high directivity and wideband operation and can be widely used in various portable wireless communication systems, including WLAN (5.05\u20135.9 GHz), ISM (5.725\u20135.875 GHz), 5G communication (3.3\u20133.8 GHz), etc.<\/jats:p>","DOI":"10.3390\/s23187851","type":"journal-article","created":{"date-parts":[[2023,9,13]],"date-time":"2023-09-13T05:31:28Z","timestamp":1694583088000},"page":"7851","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Superdirective Wideband Array of Circular Monopoles with Loaded Patches for Wireless Communications"],"prefix":"10.3390","volume":"23","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2226-0407","authenticated-orcid":false,"given":"Ping","family":"Lu","sequence":"first","affiliation":[{"name":"School of Electronics and Information Engineering, Sichuan University, Chengdu 610064, China"}]},{"given":"Zhiwei","family":"Liu","sequence":"additional","affiliation":[{"name":"School of Electronics and Information Engineering, Sichuan University, Chengdu 610064, China"}]},{"given":"Enpu","family":"Lei","sequence":"additional","affiliation":[{"name":"School of Electronics and Information Engineering, Sichuan University, Chengdu 610064, China"}]},{"given":"Kama","family":"Huang","sequence":"additional","affiliation":[{"name":"School of Electronics and Information Engineering, Sichuan University, Chengdu 610064, China"}]},{"given":"Chaoyun","family":"Song","sequence":"additional","affiliation":[{"name":"Department of Engineering, King\u2019s College London, London WC2R 2LS, UK"}]}],"member":"1968","published-online":{"date-parts":[[2023,9,13]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"30","DOI":"10.1109\/MWC.2019.1800541","article-title":"Vehicle-Mounted Base Station for Connected and Autonomous Vehicles: Opportunities and Challenges","volume":"26","author":"Li","year":"2019","journal-title":"IEEE Wirel. 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