An Effective Method for the Synthesis of Wideband and Wide-Scanning Sparse Planar Array

An Effective Method for the Synthesis of Wideband and Wide-Scanning Sparse Planar Array
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宽带宽扫描稀疏平面阵列合成的有效方法

DOI:
10.1109/tap.2021.3119102
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发表时间:
2022-04
期刊:
IEEEE Transactions on Antenna and Propagation
影响因子:
--
通讯作者:
Chen Rushan
Chen Rushan
中科院分区:
其他
文献类型:
--
作者:
Gu Pengfei;Wang Gui;Fan Zhenhon;Ding Dazhi;Chen Rushan

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矩阵增强和矩阵束(MEMP)被用来减少具有赋形波束方向图的平面阵列的阵元数目。该工作将基于模极模型的综合方法扩展到广角扫描和宽带方向图可重构稀疏平面阵列的综合中,该方法利用了寻找多个方向图的公共元素位置和单个元素激励的必要约束。此外,在多重复合等价Hankel矩阵中引入了么正变换,将奇异值分解(SVD)和特征值分解(EVD)过程的复杂计算转化为实数计算,有效地降低了计算复杂度。考虑到阵元的尺寸,避免阵元间距过小也是一种新的策略。给出了一组数值实验,验证了该方法的有效性和优越性。
The matrix enhancement and matrix pencil (MEMP) has been used to reduce the number of array elements in the planar array with a shaped-beam pattern. This work extends the MEMP-based synthesis method to the synthesis of pattern reconfigurable sparse planar arrays in wide-angle scanning and wideband, which exploits a necessary restriction on finding the common element positions and individual element excitations for multiple patterns. Moreover, a unitary transformation is exploited in the multiple composite equivalent Hankel matrix, which converts the complex computations of singular value decomposition (SVD) and eigenvalue decomposition (EVD) courses into real ones and effectively reduces the computation complexity. A new tactic is also restricted on avoiding too small element spacing with the consideration of the size of array antenna element. A set of numerical experiments are provided to validate the effectiveness and advantages of the proposed method.
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