High-efficiency super-gain antenna arrays
High-efficiency super-gain antenna arrays
复制标题
高效超增益天线阵列
DOI：
10.1109/wsa.2010.5456400
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
J. Nossek
中科院分区：
文献类型：
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作者：
M. Ivrlac;J. Nossek
这是一个有趣的事实，密集封装的天线阵列的阵列增益可以远远大于构成天线阵列的天线的数量。然而，它们的大阵列增益在实践中似乎是无法实现的，因为它往往被伴随着这种超级增益效应的效率损失所吞噬。在本文中，作者认为，上述论断是基于一个小于最佳选择的天线阵列内的天线间隔，以及小于最佳天线激励电流。我们证明，如果这两个问题得到最佳解决，超级增益实际上可以获得高效率。紧凑的天线阵列，因此值得给予更多的关注，在天线和信号处理抽象层，这种阵列的成功应用需要在这两个层的最佳设计。
It is an intriguing fact that the array gain of densely packed antenna arrays can be much larger than the number of antennas which comprise the antenna array. However, their large array gain seems to be inaccessible in practice, for it tends to be all eaten up by a loss of efficiency that accompanies such super-gain effects. In this paper, the authors argue that the assertion given above is based on a less than optimum choice of antenna separation inside the array as well as on less than optimum antenna excitation currents. We demonstrate that if both those issues are addressed optimally super-gain actually can be obtained with high efficiency. Compact antenna arrays therefore deserve to be given more attention in both the antenna-, and the signal processing layers of abstraction, for the successful application of such arrays requires optimum design in both layers.