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A low‐profile circularly polarized transmitarray antenna using rotated cross dipole elements
Author(s) -
Zhong Xianjiang,
Lei Zhiyong,
Dong Mianmian,
Xiao Qinkun
Publication year - 2020
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.22082
Subject(s) - optics , hfss , aperture (computer memory) , rotation (mathematics) , transmission coefficient , materials science , dipole , antenna (radio) , transmission (telecommunications) , dipole antenna , axial ratio , physics , circular polarization , telecommunications , acoustics , microstrip antenna , microstrip , engineering , geometry , mathematics , quantum mechanics
A low profile circularly polarized (CP) transmitrarray using double‐layer cross dipole elements is presented in this letter. The proposed element exhibits an overall thickness of only 0.22λ 0 , which offers the advantages of light weight, easy fabrication, and low cost compared to conventional transmitarray elements. The transmission coefficient of the element is analyzed by Ansys HFSS, and the results show that the element manifests a high transmission rate and good CP performance. Then, by using angular rotation technique, transmitarray with this type of element is designed, fabricated, and tested. The size of the transmitarray is 6.6 × 6.6λ 0 at the center frequency of 10 GHz. The measured peak gain is 22.5 dB at 9.5 GHz, resulting in an aperture efficiency of 36%. The measured 1‐dB gain and 3‐dB axial ratio bandwidths are 10.2% and 12%, respectively.