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引用次数: 3
摘要
本文介绍了一种MIMO天线的设计与优化方法。在多端口MIMO天线的设计表面上，使用与地平面相邻的像素矩形网格，像素之间采用硬连线连接。采用遗传算法优化，在所有端口阻抗匹配良好、端口间隔离度高的约束下，找到像素与多个输入端口位置之间的最优连接配置。作为示例，提供了4端口MIMO天线的结果，工作在5-6 GHz，尺寸为41 mm × 25mm，连接到40mm × 75mm地平面。仿真和测试结果表明，采用遗传算法可以有效地设计和优化MIMO天线。
MIMO antenna design with pixelated radiator surface for WLAN applications
In this paper we describe a method for the design and optimization of MIMO antennas. A rectangular grid of pixels adjacent to a ground plane with hardwired connections between pixels are used as a design surface for the multiport MIMO antenna. Genetic Algorithm optimization is used to find the optimal configuration of connections between pixels and multiple input port locations under the constraints of good impedance matching across all ports and high isolation between ports over the desired frequency band. As an example results for a 4-port MIMO antenna that operates from 5-6 GHz with dimensions of 41 mm × 25mm connected to a 40mm × 75mm ground plane are provided. The proposed antenna is investigated by simulation and measurement and results demonstrate that MIMO antennas can be designed and optimized effectively using Genetic Algorithms.
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