Open AccessReduced aperture low sidelobe patch array
Author(s) -
Wasif Niaz Muhammad,
Shahzad Sadiq Muhammad,
Yin Yingzeng,
Zheng Shufeng,
Chen Jingdong
Publication year - 2018
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2018.1051
Subject(s) - aperture (computer memory) , optics , antenna aperture , array gain , electrical impedance , impedance matching , acoustics , physics , engineering , electrical engineering , antenna array , radiation pattern , antenna (radio)
This Letter presents the design of a reduced aperture low sidelobe 4 × 4 patch array whose aperture is much smaller than that of a conventional 4 × 4 patch array since the spacing between adjacent elements is less than λ o / 2 . Low sidelobes are achieved without implementing an aperture distribution. This results in more efficient patch elements of the array and therefore the overall gain is higher than that of a conventional array of the same aperture. Moreover, as patches are series‐fed, the width of feed lines is not limited by patch impedances and no matching transformer is required in the design. The experiment shows that a gain of 15.3 dB at 16.5 GHz and a sidelobe level of −16.7 dB in the E ‐plane and −15.1 dB in the H ‐plane are achieved.