{"title":"Compact Dual-Band Endfire Phased Array Antenna for 5G mm-Wave Mobile Terminals","authors":"Huidong Xu, Changjiang Deng, Zhewei Fu, Rongrong Dong","doi":"10.1002/mop.70201","DOIUrl":null,"url":null,"abstract":"<div>\n \n <p>In this article, a compact 28/38 GHz dual-band endfire phased array is presented for 5G millimeter-wave (mm-wave) mobile terminal applications. The unit cell is a planar dipole printed on a single substrate layer. Parasitic strips and etched slots are loadedon the dipole to construct different current paths in 28 GHz and 38 GHz, thus achieving dual-band operation with a single radiator, leading to a small ground clearance of 1.6 mm. A 5-element array with 5-mm element spacing is fabricated. The measured -10 dB impedance bandwidths are 11.7% (26.9–30.2 GHz) and 13.1% (36.5–41.5 GHz) in the two operating bands with isolation higher than 16 dB. The measured peak gains attain 8.5 dBi and 10.4 dBi in the lower and upper bands. The phased array supports a beam scanning angle of –51° to + 50° at 28 GHz and –39° to +37° at 38 GHz.</p>\n </div>","PeriodicalId":18562,"journal":{"name":"Microwave and Optical Technology Letters","volume":"67 4","pages":""},"PeriodicalIF":1.0000,"publicationDate":"2025-04-21","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.70201","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
In this article, a compact 28/38 GHz dual-band endfire phased array is presented for 5G millimeter-wave (mm-wave) mobile terminal applications. The unit cell is a planar dipole printed on a single substrate layer. Parasitic strips and etched slots are loadedon the dipole to construct different current paths in 28 GHz and 38 GHz, thus achieving dual-band operation with a single radiator, leading to a small ground clearance of 1.6 mm. A 5-element array with 5-mm element spacing is fabricated. The measured -10 dB impedance bandwidths are 11.7% (26.9–30.2 GHz) and 13.1% (36.5–41.5 GHz) in the two operating bands with isolation higher than 16 dB. The measured peak gains attain 8.5 dBi and 10.4 dBi in the lower and upper bands. The phased array supports a beam scanning angle of –51° to + 50° at 28 GHz and –39° to +37° at 38 GHz.
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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