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 propert...
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| Language: | English |
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IEEE
2025-01-01
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| Series: | IEEE Open Journal of Antennas and Propagation |
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| Online Access: | https://ieeexplore.ieee.org/document/10976693/ |
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| author | Ludovica Tognolatti Paolo Baccarelli Cristina Ponti Silvio Ceccuzzi Vakhtang Jandieri Giuseppe Schettini |
| author_facet | Ludovica Tognolatti Paolo Baccarelli Cristina Ponti Silvio Ceccuzzi Vakhtang Jandieri Giuseppe Schettini |
| author_sort | Ludovica Tognolatti |
| collection | DOAJ |
| description | 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 notation="LaTeX">$7\times {\times }8$ </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 notation="LaTeX">$f = 24.6$ </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. |
| format | Article |
| id | doaj-art-05bdb0be47f34b53a60641ff9c6a03da |
| institution | Kabale University |
| issn | 2637-6431 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Open Journal of Antennas and Propagation |
| spelling | doaj-art-05bdb0be47f34b53a60641ff9c6a03da2025-08-20T04:00:45ZengIEEEIEEE Open Journal of Antennas and Propagation2637-64312025-01-01641126113410.1109/OJAP.2025.356435210976693Dielectric EBG Leaky-Wave Antenna: Design and Experimental ValidationLudovica Tognolatti0https://orcid.org/0000-0003-4124-8208Paolo Baccarelli1https://orcid.org/0000-0002-4660-0103Cristina Ponti2https://orcid.org/0000-0003-2482-8606Silvio Ceccuzzi3https://orcid.org/0000-0003-1448-5793Vakhtang Jandieri4https://orcid.org/0000-0002-6153-4175Giuseppe Schettini5https://orcid.org/0000-0002-8890-2601Department of Industrial, Electronic and Mechanical Engineering, Roma Tre University, Rome, ItalyDepartment of Industrial, Electronic and Mechanical Engineering, Roma Tre University, Rome, ItalyDepartment of Industrial, Electronic and Mechanical Engineering, Roma Tre University, Rome, ItalyFusion and Nuclear Safety Department, ENEA, Frascati, ItalyDepartment of General and Theoretical Electrical Engineering, Faculty of Engineering, University of Duisburg-Essen, Duisburg, GermanyDepartment of Industrial, Electronic and Mechanical Engineering, Roma Tre University, Rome, ItalyThis 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 notation="LaTeX">$7\times {\times }8$ </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 notation="LaTeX">$f = 24.6$ </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.https://ieeexplore.ieee.org/document/10976693/Electromagnetic band-gapperiodic structuresphotonic crystalsleaky modesleaky-wave antenna (LWA)K-band |
| spellingShingle | Ludovica Tognolatti Paolo Baccarelli Cristina Ponti Silvio Ceccuzzi Vakhtang Jandieri Giuseppe Schettini Dielectric EBG Leaky-Wave Antenna: Design and Experimental Validation IEEE Open Journal of Antennas and Propagation Electromagnetic band-gap periodic structures photonic crystals leaky modes leaky-wave antenna (LWA) K-band |
| title | Dielectric EBG Leaky-Wave Antenna: Design and Experimental Validation |
| title_full | Dielectric EBG Leaky-Wave Antenna: Design and Experimental Validation |
| title_fullStr | Dielectric EBG Leaky-Wave Antenna: Design and Experimental Validation |
| title_full_unstemmed | Dielectric EBG Leaky-Wave Antenna: Design and Experimental Validation |
| title_short | Dielectric EBG Leaky-Wave Antenna: Design and Experimental Validation |
| title_sort | dielectric ebg leaky wave antenna design and experimental validation |
| topic | Electromagnetic band-gap periodic structures photonic crystals leaky modes leaky-wave antenna (LWA) K-band |
| url | https://ieeexplore.ieee.org/document/10976693/ |
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