摘要
提出了一种基于口径场变换的阵列加权补偿技术,该补偿技术利用仿真或测试的方向图数据,反演等效激励数据,迭代逼近理想的激励数据,进一步修正天线阵列的加权系数,从而获得理想的低副瓣方向图性能。以一个16元八木天线相控阵为例,由于采用多种规格的天线单元,单元方向图增益差异较大,影响合成方向图性能,而通过应用该方法修正后,天线性能接近设计值。仿真结果和近场测试结果进一步验证了该方法的准确性。
A weighting compensation method for phased array based on the aperture field transformation is presented in this paper. The method employs the simulated or measured antenna pattern to deduce the equivalent source. Then, the iteration process is car- tied out to achieve the ideal source and further modify the weighting factor. The desired low side-lobe pattern is obtained therefore. A Yiga-Uda antenna array with 18 elements is taken as an example in the paper. The difference on the antenna pattern and gain of the different elements makes the synthesized array pattern performance decreased. While the proposed method is used, the per- formance of the antenna array approaches the theoretical design. The simulated and measured results verified the method.
出处
《现代雷达》
CSCD
北大核心
2013年第9期50-52,共3页
Modern Radar
关键词
口径场变换
相控阵天线
加权
八木天线
aperture field transformation
phased array
weighting
Yiga-Uda antenna
