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Broadband cavity‐backed aperture‐coupled vertically mounted strip antenna
Author(s) -
Fan Hongtao,
Bian Anjian,
Kim Jeong P.
Publication year - 2020
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.32256
Subject(s) - broadband , microstrip antenna , antenna (radio) , patch antenna , optics , microstrip , equivalent circuit , aperture (computer memory) , antenna factor , antenna efficiency , coaxial antenna , antenna aperture , acoustics , materials science , engineering , electrical engineering , electronic engineering , radiation pattern , physics , voltage
A novel cavity‐backed aperture‐coupled antenna having a vertically mounted (VM) strip is proposed, where the signal is fed to the antenna from a microstrip feed through an aperture‐coupled microstrip‐to‐waveguide transition. Broadband characteristics are achieved by the introduction of the VM strip. An equivalent‐circuit model for this antenna that reflects the effects of various structure parameters is proposed. Based on this equivalent circuit, an X‐band antenna was designed by optimizing for broadband, low loss, and highly efficient operation. The measured S 11 of the fabricated antenna showed excellent broadband characteristics (47%) and was in reasonable agreement with predictions derived from the equivalent circuit and numerical simulation.