A Subwavelength Element for Broadband Circularly Polarized Reflectarrays
作者： Gang Zhao , Yong-Chang Jiao , Fan Zhang , Fu-Shun Zhang
DOI: 10.1109/LAWP.2010.2047836
关键词:
摘要: A subwavelength element is presented for designing a circularly polarized (CP) reflectarray that converts the linearly incident field of feed into an outgoing field. To evaluate performance designed element, parametric study carried out using Ansoft HFSS. Compared to conventional near-resonant patch, one can realize more similar behavior phase curves at different frequencies, leading broader bandwidth. The shifts both linear polarizations be controlled by varying x- and y-dimension element. prime-focus with this type has been implemented, superior bandwidth verified, compared ?/2 elements. measured results show obtained 1-dB gain 3-dB axial ratio bandwidths elements reach as large 17% 11%, respectively.
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