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A novel design of dual broadband, single‐layer circularly polarized reflectarray
Author(s) -
Zhong XianJiang,
Chen Lei,
Shi Yan,
Shi XiaoWei
Publication year - 2015
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.20870
Subject(s) - broadband , optics , bandwidth (computing) , multi band device , microwave , axial ratio , dipole , physics , materials science , circular polarization , antenna (radio) , microstrip , telecommunications , engineering , quantum mechanics
A single‐layer dual‐band circularly polarized reflectarray antenna composed by split double rings for higher band and cross dipoles for lower band is presented in this letter. By adjusting the length of the cross dipole and rotation angle of split double ring, two classes of elements achieve the required reflection phase. Then, a reflectarray with these two types of elements is fabricated and tested. It is worth noting that the designed reflectarray obtains broadband performance at both bands. Measurement results demonstrate that the fabricated reflectarray obtains a 1 dB gain bandwidth of more than 14% for both bands and a 3 dB axial ratio bandwidth of 22.9% for the lower band and 40% for the upper band. © 2014 Wiley Periodicals, Inc. Int J RF and Microwave CAE 25:364–369, 2015.