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Continuous scanning leaky‐wave antenna utilizing second‐mode spoof surface plasmon polaritons excitation
Author(s) -
Zhong Tao,
Zhang Hou
Publication year - 2020
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.22418
Subject(s) - leaky wave antenna , surface plasmon polariton , antenna (radio) , optics , physics , leaky mode , surface wave , excitation , directivity , harmonic , modulation (music) , radiation pattern , surface plasmon , acoustics , plasmon , single mode optical fiber , telecommunications , microstrip antenna , radiation mode , engineering , optical fiber , quantum mechanics
Continuous scanning leaky‐wave antenna (LWA) based on second‐mode spoof surface plasmon polaritons (SSPPs) excitation has been proposed and validated in this article. Different from the existing modulation methods, connecting axisymmetric rectangular modulation is adopted to excite the −first harmonic. In this way, the slow‐wave bound on the surface of the transmission line is converted into a radiation wave in space. To the authors' knowledge, this is the first presentation of LWA design utilizing second‐mode SSPPs excitation. In the range from 5.0 to 9.0 GHz, the proposed LWA realizes continuous scanning from −54° ~ 11° with a quasi‐omnidirectional beam in the vertical plane. A prototype of the proposed antenna is fabricated and measured, and the measured results show good agreement with the simulated. The proposed LWA has potential applications in communication systems and radars.