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Second Higher-Order-Mode Microstrip Leaky-Wave Antenna with I-Shaped Slots for Single Main Beam Radiation in Cross Section
Peng Fei Zhang1; Lei Zhu1; Sheng Sun2
2019-06-06
Source PublicationIEEE Transactions on Antennas and Propagation
ISSN0018-926X
Volume67Issue:10Pages:6278-6285
Abstract

This paper presents a second higher-order-mode microstrip leaky-wave antenna (LWA) for single main beam radiation. Different from its conventional second higher-order leaky-mode counterpart with two symmetric radiation beams, the proposed antenna with an array of I-shaped slots radiates only one main radiation beam at the cross-sectional center plane. By introducing a transversally loaded slot array along the microstrip line, the cross-polarization of the antenna can be largely enhanced, while a longitudinally loaded slot array interrupts the current flow and thus effectively reduces the original two radiation beams. Subsequently, an array of I-shaped slots, including transversal- A nd longitudinal-slot portions, is etched on the strip conductor and its unique characteristics are then analyzed to obtain a single main radiation beam in the center plane. To validate this proposal, a prototype of single main beam LWA with second higher-order mode is designed, implemented, and fabricated. Owing to larger leakage constant, the LWA presented in this paper radiates higher power within a shorter length in terms of guided wavelength, resulting in a higher gain. The measured results show a beam-scanning capability from 20° to 55° as the frequency varies from 5.1 to 4.6 GHz, while the maximum gain of 14.6 dBi is achieved at 4.9 GHz.

KeywordI-shaped Slot Array Microstrip Leaky-wave Antenna (Lwa) Second Higher-order Mode Single Main Beam Radiation
DOI10.1109/TAP.2019.2920260
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaEngineering ; Telecommunications
WOS SubjectEngineering, Electrical & Electronic ; Telecommunications
WOS IDWOS:000492335100005
PublisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
Scopus ID2-s2.0-85073606662
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Cited Times [WOS]:6   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Corresponding AuthorSheng Sun
Affiliation1.Department of Electrical and Computer Engineering, Faculty of Science and Technology, University of Macau,Macao
2.School of Electronic Science and Engineering, University of Electronic Science and Technology of China,Chengdu,611731,China
First Author AffilicationFaculty of Science and Technology
Recommended Citation
GB/T 7714
Peng Fei Zhang,Lei Zhu,Sheng Sun. Second Higher-Order-Mode Microstrip Leaky-Wave Antenna with I-Shaped Slots for Single Main Beam Radiation in Cross Section[J]. IEEE Transactions on Antennas and Propagation,2019,67(10):6278-6285.
APA Peng Fei Zhang,Lei Zhu,&Sheng Sun.(2019).Second Higher-Order-Mode Microstrip Leaky-Wave Antenna with I-Shaped Slots for Single Main Beam Radiation in Cross Section.IEEE Transactions on Antennas and Propagation,67(10),6278-6285.
MLA Peng Fei Zhang,et al."Second Higher-Order-Mode Microstrip Leaky-Wave Antenna with I-Shaped Slots for Single Main Beam Radiation in Cross Section".IEEE Transactions on Antennas and Propagation 67.10(2019):6278-6285.
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