{"title":"Ultra-Wideband Coupled-Fed Loop Antenna Pair for 5G Mobile Terminals","authors":"Aidi Ren, Wenyi Song, Zhanhao Zhang, Ying Liu, Lixia Yang, Yingsong Li, Zhixiang Huang","doi":"10.1049/mia2.70088","DOIUrl":null,"url":null,"abstract":"<p>This paper presents an ultra-wideband (UWB) antenna pair for 5G mobile terminals. The antenna pair is composed of two coupled-fed loop antennas with a common shorted branch, which achieves a compact size. The wideband operation is obtained by meticulously exciting two-loop modes. Due to the common shorted branch, a good isolation level (> 10 dB) is acquired. Based on four coupled-fed loop antenna pairs, an ultra-wideband 8 × 8 multiple-input multiple-output (MIMO) array with compact size is conducted and measured. The experimental results show that the MIMO array covers 3.3–7.8 GHz with a relative bandwidth of 81.08%, and the isolation between ports is better than 10 dB. In addition, the measured radiation pattern, total efficiency and ECCs (envelope correlation coefficients) are also discussed.</p>","PeriodicalId":13374,"journal":{"name":"Iet Microwaves Antennas & Propagation","volume":"20 1","pages":""},"PeriodicalIF":1.2000,"publicationDate":"2026-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ietresearch.onlinelibrary.wiley.com/doi/epdf/10.1049/mia2.70088","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Iet Microwaves Antennas & Propagation","FirstCategoryId":"94","ListUrlMain":"https://ietresearch.onlinelibrary.wiley.com/doi/10.1049/mia2.70088","RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
This paper presents an ultra-wideband (UWB) antenna pair for 5G mobile terminals. The antenna pair is composed of two coupled-fed loop antennas with a common shorted branch, which achieves a compact size. The wideband operation is obtained by meticulously exciting two-loop modes. Due to the common shorted branch, a good isolation level (> 10 dB) is acquired. Based on four coupled-fed loop antenna pairs, an ultra-wideband 8 × 8 multiple-input multiple-output (MIMO) array with compact size is conducted and measured. The experimental results show that the MIMO array covers 3.3–7.8 GHz with a relative bandwidth of 81.08%, and the isolation between ports is better than 10 dB. In addition, the measured radiation pattern, total efficiency and ECCs (envelope correlation coefficients) are also discussed.
期刊介绍：
Topics include, but are not limited to:
Microwave circuits including RF, microwave and millimetre-wave amplifiers, oscillators, switches, mixers and other components implemented in monolithic, hybrid, multi-chip module and other technologies. Papers on passive components may describe transmission-line and waveguide components, including filters, multiplexers, resonators, ferrite and garnet devices. For applications, papers can describe microwave sub-systems for use in communications, radar, aerospace, instrumentation, industrial and medical applications. Microwave linear and non-linear measurement techniques.
Antenna topics including designed and prototyped antennas for operation at all frequencies; multiband antennas, antenna measurement techniques and systems, antenna analysis and design, aperture antenna arrays, adaptive antennas, printed and wire antennas, microstrip, reconfigurable, conformal and integrated antennas.
Computational electromagnetics and synthesis of antenna structures including phased arrays and antenna design algorithms.
Radiowave propagation at all frequencies and environments.
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Metrology for 5G Technologies - https://digital-library.theiet.org/files/IET_MAP_CFP_M5GT_SI2.pdf
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