Open AccessProbe‐fed dipole antenna with parasitic patches for wideband and wide‐scanning planar phased arrays
Author(s) -
Wang Bao,
Lin Xian Qi,
Cai Yang,
Nie Li Ying
Publication year - 2021
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/mia2.12065
Subject(s) - wideband , standing wave ratio , dipole antenna , planar , phased array , planar array , bandwidth (computing) , dipole , antenna array , optics , antenna (radio) , acoustics , physics , materials science , microstrip antenna , engineering , electrical engineering , computer science , telecommunications , computer graphics (images) , quantum mechanics
A probe‐fed dipole antenna with parasitic patches is proposed in this study as the element for wideband and wide‐scanning planar‐phased arrays. Parasitic patches are used to realize wideband performance by significantly reducing the active input impendence. The printed dipole antenna with parasitic patches is directly matched with the subminiature version A (SMA) connector through the modified probe structure. The cell size is 0.5 × 0.5 × 0.145 λ high 3 . The planar and low‐profile characteristics make it suitable for modular phased array applications. It is shown that the infinite array simulation results achieve 45.2% bandwidth (7.86–12.45 GHz) with active voltage standing wave ratio (VSWR) < 2 at broadside, 60° scans in E ‐, D ‐planes and 50° scan in H ‐plane. An 8 × 8 prototype array has been manufactured and measured to validate the proposed design and the active element patterns agree well with simulation results.