{"title":"A High Isolation Antenna Array With Loaded Dummy for In-Band Full-Duplex Application","authors":"Lun Cui, Yu-Heng Wang, Shi-Gang Zhou, Chow-Yen-Desmond Sim","doi":"10.1002/mop.70306","DOIUrl":null,"url":null,"abstract":"<div>\n \n <p>A high-isolation antenna array incorporating loaded dummy units (DUs) is proposed for in-band full-duplex (IBFD) applications. Through rigorous network analysis, the electromagnetic coupling between the transmitter (TX) and receiver (RX) is characterized in relation to the DU loads. Based on the network analysis, optimization of the DU loads enables effective reduction of TX-RX coupling without compromising their performances. For validation, an IBFD array with 8-port TX and RX configurations featuring ±45° dual-polarized subarrays was fabricated. The measured results agree well with the simulated results, demonstrating that the proposed array achieves isolation levels exceeding 60 dB across the 4.8–4.9 GHz operational bandwidth. It indicates that the proposed array is a promising candidate for IBFD applications.</p>\n </div>","PeriodicalId":18562,"journal":{"name":"Microwave and Optical Technology Letters","volume":"67 7","pages":""},"PeriodicalIF":1.2000,"publicationDate":"2025-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Microwave and Optical Technology Letters","FirstCategoryId":"5","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/mop.70306","RegionNum":4,"RegionCategory":"工程技术","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
A high-isolation antenna array incorporating loaded dummy units (DUs) is proposed for in-band full-duplex (IBFD) applications. Through rigorous network analysis, the electromagnetic coupling between the transmitter (TX) and receiver (RX) is characterized in relation to the DU loads. Based on the network analysis, optimization of the DU loads enables effective reduction of TX-RX coupling without compromising their performances. For validation, an IBFD array with 8-port TX and RX configurations featuring ±45° dual-polarized subarrays was fabricated. The measured results agree well with the simulated results, demonstrating that the proposed array achieves isolation levels exceeding 60 dB across the 4.8–4.9 GHz operational bandwidth. It indicates that the proposed array is a promising candidate for IBFD applications.
期刊介绍：
Microwave and Optical Technology Letters provides quick publication (3 to 6 month turnaround) of the most recent findings and achievements in high frequency technology, from RF to optical spectrum. The journal publishes original short papers and letters on theoretical, applied, and system results in the following areas.
- RF, Microwave, and Millimeter Waves
- Antennas and Propagation
- Submillimeter-Wave and Infrared Technology
- Optical Engineering
All papers are subject to peer review before publication
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