随机馈相法对相控阵天线增益和指向精度的影响 |
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引用本文: | 张胜辉,余鹏程,杨鹏,陈劫尘. 随机馈相法对相控阵天线增益和指向精度的影响[J]. 航天器工程, 2014, 0(3): 67-71 |
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作者姓名: | 张胜辉 余鹏程 杨鹏 陈劫尘 |
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作者单位: | 航天恒星科技有限公司;电子科技大学; |
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摘 要: | 分别以2位和3位数字移相器为例,研究了四舍五入法、适当随机量化法和预加相位法等3种随机馈相法,对均匀微带直线阵列的增益方向图和波束指向精度的影响,研究证明相对于四舍五入馈相方法,适当随机量化法和预加相位法能够极大地提高波束指向精度,但是在移相器位数较少的情况下增益会有少许损失。研究结果可为大型相控阵天线的设计提供参考。
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关 键 词: | 相控阵天线 四舍五入法 适当随机量化法 预加相位法 波束指向精度 |
Impact of Random Phase Feeding Methods on Gain and Beam Pointing Accuracy of Phased Array Antenna |
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Affiliation: | ZHANG Shenghui;YU Pengcheng;YANG Peng;CHEN Jiechen (1 Space Star Technology Co. Ltd. , Beijing 100086, China 2 University of Electronic Science and Technology of China, Chengdu 611731, China) |
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Abstract: | In this paper, the impacts of appropriate random phasing method, phase-adder method, and rounding phase feeding method on the gain and beam pointing accuracy of a uniform linear ar- ray using 2 and 3-bit digital phase shifter are studied. It is shown that the appropriate random phasing method and phase-adder method can achieve a much better beam pointing accuracy than the rounding phase feeding method, while there will be a little loss of the gain when using less bit phase shifter. This result can be used in the design of phased array antennas. |
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Keywords: | phased array antenna phase-adder appropriate random phasing rounding phase feeding beam pointing accuracy |
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