{"title":"介电EBG漏波天线:设计与实验验证","authors":"Ludovica Tognolatti;Paolo Baccarelli;Cristina Ponti;Silvio Ceccuzzi;Vakhtang Jandieri;Giuseppe Schettini","doi":"10.1109/OJAP.2025.3564352","DOIUrl":null,"url":null,"abstract":"This paper proposes a novel Electromagnetic Band-Gap (EBG) leaky-wave antenna (LWA) operating in the K-band with enhanced directivity at broadside. A rigorous method that combines the analysis of the band diagrams of Bloch waves propagating within two-dimensional (2-D) EBG structures and the properties of bound and leaky modes in transversely open lattice waveguides is used to design the antenna. For the first time, a three-dimensional (3-D) realistic configuration of the EBG structure is designed, manufactured, and measured in the K-band. An effective leaky-wave approach is applied in conjunction with the use of “ad-hoc” and commercial EM full-wave software for the accurate design of the structure to be realized. The prototype consists of <inline-formula> <tex-math>$7\\times {\\times }8$ </tex-math></inline-formula> alumina cylinders positioned above a ground plane and supported by two vertical metal plates. The antenna is fed by two counterphase monopoles. A rat-race hybrid junction, located just below the antenna, feeds the two monopoles. The measurements show a very good agreement with the adopted leaky-wave model. Experimental results show a broadside directivity of 12.8 dBi and a return loss of 24 dB at the frequency of <inline-formula> <tex-math>$f = 24.6$ </tex-math></inline-formula> GHz. The design reported operates in the K-band in reason of its application for the project PRIN 2017 WPT4WID under grant 2017YJE9XK005.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"6 4","pages":"1126-1134"},"PeriodicalIF":3.6000,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10976693","citationCount":"0","resultStr":"{\"title\":\"Dielectric EBG Leaky-Wave Antenna: Design and Experimental Validation\",\"authors\":\"Ludovica Tognolatti;Paolo Baccarelli;Cristina Ponti;Silvio Ceccuzzi;Vakhtang Jandieri;Giuseppe Schettini\",\"doi\":\"10.1109/OJAP.2025.3564352\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This paper proposes a novel Electromagnetic Band-Gap (EBG) leaky-wave antenna (LWA) operating in the K-band with enhanced directivity at broadside. A rigorous method that combines the analysis of the band diagrams of Bloch waves propagating within two-dimensional (2-D) EBG structures and the properties of bound and leaky modes in transversely open lattice waveguides is used to design the antenna. For the first time, a three-dimensional (3-D) realistic configuration of the EBG structure is designed, manufactured, and measured in the K-band. An effective leaky-wave approach is applied in conjunction with the use of “ad-hoc” and commercial EM full-wave software for the accurate design of the structure to be realized. The prototype consists of <inline-formula> <tex-math>$7\\\\times {\\\\times }8$ </tex-math></inline-formula> alumina cylinders positioned above a ground plane and supported by two vertical metal plates. The antenna is fed by two counterphase monopoles. A rat-race hybrid junction, located just below the antenna, feeds the two monopoles. The measurements show a very good agreement with the adopted leaky-wave model. Experimental results show a broadside directivity of 12.8 dBi and a return loss of 24 dB at the frequency of <inline-formula> <tex-math>$f = 24.6$ </tex-math></inline-formula> GHz. The design reported operates in the K-band in reason of its application for the project PRIN 2017 WPT4WID under grant 2017YJE9XK005.\",\"PeriodicalId\":34267,\"journal\":{\"name\":\"IEEE Open Journal of Antennas and Propagation\",\"volume\":\"6 4\",\"pages\":\"1126-1134\"},\"PeriodicalIF\":3.6000,\"publicationDate\":\"2025-04-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10976693\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"IEEE Open Journal of Antennas and Propagation\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://ieeexplore.ieee.org/document/10976693/\",\"RegionNum\":0,\"RegionCategory\":null,\"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 Open Journal of Antennas and Propagation","FirstCategoryId":"1085","ListUrlMain":"https://ieeexplore.ieee.org/document/10976693/","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
Dielectric EBG Leaky-Wave Antenna: Design and Experimental Validation
This paper proposes a novel Electromagnetic Band-Gap (EBG) leaky-wave antenna (LWA) operating in the K-band with enhanced directivity at broadside. A rigorous method that combines the analysis of the band diagrams of Bloch waves propagating within two-dimensional (2-D) EBG structures and the properties of bound and leaky modes in transversely open lattice waveguides is used to design the antenna. For the first time, a three-dimensional (3-D) realistic configuration of the EBG structure is designed, manufactured, and measured in the K-band. An effective leaky-wave approach is applied in conjunction with the use of “ad-hoc” and commercial EM full-wave software for the accurate design of the structure to be realized. The prototype consists of $7\times {\times }8$ alumina cylinders positioned above a ground plane and supported by two vertical metal plates. The antenna is fed by two counterphase monopoles. A rat-race hybrid junction, located just below the antenna, feeds the two monopoles. The measurements show a very good agreement with the adopted leaky-wave model. Experimental results show a broadside directivity of 12.8 dBi and a return loss of 24 dB at the frequency of $f = 24.6$ GHz. The design reported operates in the K-band in reason of its application for the project PRIN 2017 WPT4WID under grant 2017YJE9XK005.