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Extremely low‐profile wideband array antenna using TCDA with polarization convertor
Author(s) -
Kim Seongjung,
Nam Sangwook
Publication year - 2021
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.32694
Subject(s) - dipole antenna , wideband , standing wave ratio , radiation pattern , broadside , antenna array , antenna measurement , collinear antenna array , microstrip antenna , planar , bandwidth (computing) , planar array , optics , antenna (radio) , materials science , coaxial antenna , physics , engineering , electrical engineering , computer science , telecommunications , computer graphics (images)
Herein, an extremely low‐profile and wideband array antenna is proposed whose height is 0.03 λ low at the lowest operating frequency. The development of the proposed array antenna is described, and its performance is compared with those of conventional patch arrays, stacked patch arrays, planar ultrawideband modular antenna arrays, and tightly coupled dipole arrays (TCDAs). Furthermore, the impedance bandwidth is 98.2% at broadside radiation, and the overlapped bandwidth when scanning up to 30° is 95.9%. This high figure of merit is obtained by introducing a polarization convertor. Finally, the measured active VSWR and array gain of the fabricated 6 × 6 array antenna are discussed. The measured result is in good agreement with the simulated result.