{"title":"A Low-Profile Magneto-Electric Dipole Filtering Antenna With Circularly Polarization","authors":"Sheng Zhang, Enhui Zhao, Xilong Wu, Hongliang Qiao, Xiaopeng Shen","doi":"10.1002/mop.70239","DOIUrl":null,"url":null,"abstract":"<div>\n \n <p>This letter presents a novel low-profile magneto-electric (ME) dipole circularly polarized (CP) filtering antenna. Its filtering response is obtained by three radiation nulls. One of them is an intrinsic radiation null of the ME dipole and the other two radiation nulls are introduced by an asymmetric feeding structure. Additionally, the CP radiation is developed by connecting the diagonal patches and loading the shorted patches around the main patches. The CP filtering antenna is fabricated and measured. The proposed ME dipole antenna is implemented on a two-layer substrate with a compact thickness of 0.081λ<sub>0</sub>, demonstrating an axial ratio bandwidth of 16.4% (4.85–5.72 GHz). The structure exhibits enhanced out-of-band rejection characteristics, achieving suppress levels exceeding 13 dB. The theoretical performances are verified by the measured results.</p>\n </div>","PeriodicalId":18562,"journal":{"name":"Microwave and Optical Technology Letters","volume":"67 5","pages":""},"PeriodicalIF":1.0000,"publicationDate":"2025-05-20","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.70239","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
This letter presents a novel low-profile magneto-electric (ME) dipole circularly polarized (CP) filtering antenna. Its filtering response is obtained by three radiation nulls. One of them is an intrinsic radiation null of the ME dipole and the other two radiation nulls are introduced by an asymmetric feeding structure. Additionally, the CP radiation is developed by connecting the diagonal patches and loading the shorted patches around the main patches. The CP filtering antenna is fabricated and measured. The proposed ME dipole antenna is implemented on a two-layer substrate with a compact thickness of 0.081λ0, demonstrating an axial ratio bandwidth of 16.4% (4.85–5.72 GHz). The structure exhibits enhanced out-of-band rejection characteristics, achieving suppress levels exceeding 13 dB. The theoretical performances are verified by the measured results.
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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