A Study of Phase Quantization Effects for Reconfigurable Reflectarray Antennas

A Study of Phase Quantization Effects for Reconfigurable Reflectarray Antennas
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可重构反射阵列天线相位量化效应的研究

DOI:
10.1109/lawp.2016.2574118
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发表时间:
2017
影响因子:
4.2
通讯作者:
Yang HH
Yang HH
中科院分区:
计算机科学2区
文献类型:
--
作者:
Yang Huanhuan;Cao Xiangyu;Gao Jun;Zheng Yuejun;Yang Huanhuan;Yang Fan;Xu Shenheng;Li Maokun;Yang HH

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系统研究了相位量化对可重构反射阵列天线波束扫描性能的影响。RRA的空间馈电方案引入了相位量化误差的内在伪随机分布,有效地消除了栅瓣和高寄生旁瓣。据观察,相位量化不影响半功率波束宽度,但增加旁瓣电平。计算了不同量化比特数和不同扫描角度下相位量化的增益损失,并由此得到了最大孔径效率。最后,两个1位RRA的测量结果与<inline-formula><tex-math notation="LaTeX">${1}0 \times {1}0$</tex-math></inline-formula>和<inline-formula><tex-math notation="LaTeX">${4}0 \times {4}0$</tex-math></inline-formula>元素验证了这些观察。
A systematic study of phase quantization effects on the beam scanning performance of reconfigurable reflectarray antennas (RRAs) is presented. The spatial feeding scheme of RRA introduces an intrinsic pseudorandom distribution of the phase quantization error, which effectively eliminates the grating lobes and high parasitic sidelobes. It is observed that the phase quantization does not affect the half-power beamwidth, but increases sidelobe levels. The gain loss due to phase quantization is computed for different quantization bit numbers and different scan angles, and the maximum aperture efficiencies are derived accordingly. Finally, the measured results of two 1-bit RRAs with <inline-formula><tex-math notation="LaTeX">${1}0 \times {1}0$</tex-math></inline-formula> and <inline-formula> <tex-math notation="LaTeX">${4}0 \times {4}0$</tex-math></inline-formula> elements validate these observations.
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