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首页> 外文期刊>International journal of RF and microwave computer-aided engineering >Design optimization of a pattern reconfigurable microstrip antenna using differential evolution and 3D EM simulation-based neural network model
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Design optimization of a pattern reconfigurable microstrip antenna using differential evolution and 3D EM simulation-based neural network model

机译：使用差分进化和基于3D EM仿真的神经网络模型对方向性可重构微带天线进行设计优化

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摘要

In this work, design optimization of a varicap diode loaded antenna consisting of four identical rectangular microstrips is presented as a pattern reconfigurable antenna at 5.2 GHz. The microstrips are printed on the front of a FR4 substrate with the dimensions of 40 mm x 25 mm and epsilon(r) = 4.6, h = 1.58 mm and probe-fed via a coupling using a rectangular microstrip line symmetrically placed between them. In first stage, S-11 of the antenna are obtained as its real and imaginary parts as continuous functions of geometry of the microstrip components within 3 to 7 GHz using multi-layer perceptron (MLP) trained and validated by 3D EM simulated data. In order to determine the most suitable (MLP) architecture and training algorithm, 20 different MLP architectures are tested. Then, S-11 are optimized with respect to the geometry parameters using differential evolution algorithm and MLP based model. The antenna is prototyped with the optimally selected parameters and measured. From the comparison of simulation and measurement results, it can be observed that the measurement results agree with the simulation results, thus it can be concluded that the proposed antenna is a simple and successful design subject to the design purposes with together its design methodology.
机译：在这项工作中，提出了由四个相同的矩形微带组成的可变电容二极管负载天线的设计优化，作为5.2 GHz方向图可重构天线。将微带打印在尺寸为40 mm x 25 mm且epsilon（r）= 4.6，h = 1.58 mm的FR4基板的正面，并通过耦合使用对称的矩形微带线通过探针进给。在第一阶段，使用经过3D EM仿真数据训练和验证的多层感知器（MLP），获得3-11 GHz范围内微带组件几何形状的连续函数，作为天线的实部和虚部作为S-11。为了确定最合适的（MLP）体系结构和训练算法，测试了20种不同的MLP体系结构。然后，使用差分进化算法和基于MLP的模型针对几何参数优化S-11。使用最佳选择的参数对天线进行原型制作并进行测量。从仿真结果与测量结果的比较可以看出，测量结果与仿真结果相吻合，因此可以得出结论：所提出的天线是一种简单而成功的设计，受设计目的和设计方法的影响。

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