{"title":"混合AMC反射面超宽带低轮廓圆极化交叉偶极子天线","authors":"Zhuozhu Chen;Jinwei Cheng;Sha Xu;Wensong Wang","doi":"10.1109/LAWP.2025.3588261","DOIUrl":null,"url":null,"abstract":"In this letter, an ultrawideband low-profile circularly polarized (CP) antenna with asymmetric cross-dipoles, parasitic patches, and artificial magnetic conductor (AMC) is proposed. A vacant-quarter ring connects orthogonal dipole arms to introduce the required 90° phase difference for generating CP radiation. To reduce the profile of the antenna, an AMC reflector is positioned beneath the radiator. The AMC reflector consists of hybrid metallic patterns printed on a substrate, where two different types of unit cells are arranged in the center and around the periphery separately to expand the in-phase reflection bandwidth. Additionally, metallic strips are added around the edge of the ground to improve the axial ratio and radiation pattern at lower frequencies. Measured results indicate that the impedance bandwidth and the axial ratio bandwidth of the antenna are 1.51 GHz to 5.13 GHz (109%) and 1.54 GHz to 3.57 GHz (79.5%), respectively. The antenna gains maintain 6.3 dBic to 8.3 dBic within the whole operating bandwidth. Furthermore, the antenna features a low profile of 0.13<italic>λ<sub>L</sub></i> corresponding to the lowest operating frequency.","PeriodicalId":51059,"journal":{"name":"IEEE Antennas and Wireless Propagation Letters","volume":"24 9","pages":"3278-3282"},"PeriodicalIF":4.8000,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Ultrawideband Low-Profile Circularly Polarized Cross-Dipole Antenna With Hybrid AMC Reflector\",\"authors\":\"Zhuozhu Chen;Jinwei Cheng;Sha Xu;Wensong Wang\",\"doi\":\"10.1109/LAWP.2025.3588261\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In this letter, an ultrawideband low-profile circularly polarized (CP) antenna with asymmetric cross-dipoles, parasitic patches, and artificial magnetic conductor (AMC) is proposed. A vacant-quarter ring connects orthogonal dipole arms to introduce the required 90° phase difference for generating CP radiation. To reduce the profile of the antenna, an AMC reflector is positioned beneath the radiator. The AMC reflector consists of hybrid metallic patterns printed on a substrate, where two different types of unit cells are arranged in the center and around the periphery separately to expand the in-phase reflection bandwidth. Additionally, metallic strips are added around the edge of the ground to improve the axial ratio and radiation pattern at lower frequencies. Measured results indicate that the impedance bandwidth and the axial ratio bandwidth of the antenna are 1.51 GHz to 5.13 GHz (109%) and 1.54 GHz to 3.57 GHz (79.5%), respectively. The antenna gains maintain 6.3 dBic to 8.3 dBic within the whole operating bandwidth. Furthermore, the antenna features a low profile of 0.13<italic>λ<sub>L</sub></i> corresponding to the lowest operating frequency.\",\"PeriodicalId\":51059,\"journal\":{\"name\":\"IEEE Antennas and Wireless Propagation Letters\",\"volume\":\"24 9\",\"pages\":\"3278-3282\"},\"PeriodicalIF\":4.8000,\"publicationDate\":\"2025-07-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"IEEE Antennas and Wireless Propagation Letters\",\"FirstCategoryId\":\"94\",\"ListUrlMain\":\"https://ieeexplore.ieee.org/document/11096415/\",\"RegionNum\":2,\"RegionCategory\":\"计算机科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, ELECTRICAL & ELECTRONIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Antennas and Wireless Propagation Letters","FirstCategoryId":"94","ListUrlMain":"https://ieeexplore.ieee.org/document/11096415/","RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
Ultrawideband Low-Profile Circularly Polarized Cross-Dipole Antenna With Hybrid AMC Reflector
In this letter, an ultrawideband low-profile circularly polarized (CP) antenna with asymmetric cross-dipoles, parasitic patches, and artificial magnetic conductor (AMC) is proposed. A vacant-quarter ring connects orthogonal dipole arms to introduce the required 90° phase difference for generating CP radiation. To reduce the profile of the antenna, an AMC reflector is positioned beneath the radiator. The AMC reflector consists of hybrid metallic patterns printed on a substrate, where two different types of unit cells are arranged in the center and around the periphery separately to expand the in-phase reflection bandwidth. Additionally, metallic strips are added around the edge of the ground to improve the axial ratio and radiation pattern at lower frequencies. Measured results indicate that the impedance bandwidth and the axial ratio bandwidth of the antenna are 1.51 GHz to 5.13 GHz (109%) and 1.54 GHz to 3.57 GHz (79.5%), respectively. The antenna gains maintain 6.3 dBic to 8.3 dBic within the whole operating bandwidth. Furthermore, the antenna features a low profile of 0.13λL corresponding to the lowest operating frequency.
期刊介绍:
IEEE Antennas and Wireless Propagation Letters (AWP Letters) is devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation. These are areas of competence for the IEEE Antennas and Propagation Society (AP-S). AWPL aims to be one of the "fastest" journals among IEEE publications. This means that for papers that are eventually accepted, it is intended that an author may expect his or her paper to appear in IEEE Xplore, on average, around two months after submission.