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Effects of antenna element structure on element properties and array pattern of a planar phased array
Author(s) -
Fukao Shoichiro,
Sato Toru,
Hojo Hiroshi,
Kimura Iwane,
Kato Susumu
Publication year - 1986
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/rs021i001p00056
Subject(s) - phased array , dipole antenna , antenna (radio) , optics , antenna array , planar , collinear antenna array , physics , acoustics , coaxial antenna , computer science , telecommunications , computer graphics (images)
A numerical consideration is performed on degradation of element properties and array patterns of a planar phased array owing to the effects of antenna element structure. By using a crossed 3‐subelement Yagi antenna specially designed for the VHP‐band MST radar in Japan (the MU radar) as a model of antenna element, the following two subjects are investigated: (1) mutual coupling effects induced by deviation of the intersecting point of a pair of crossed subelements from each subelement center, and (2) effects of vertical current which flows on the mast supporting the antenna subelements. It is concluded that neither of them provide significant degradation of either element properties or array patterns. Although this conclusion is derived for specific phased arrays composed of specific antenna elements, it will be essentially valid for ordinary planar phased arrays composed of dipoles or Yagi antennas.