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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：基于差分演化和3D仿真神经网络模型的设计优化图案可重构微带天线的优化

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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，由四个相同的矩形微轨组成的varICAP二极管加载天线的设计优化作为5.2GHz的图案可重构天线。微带在FR4基板的前部印刷，尺寸为40mm×25mm，ε（R）= 4.6，H = 1.58mm，并且通过使用对称地放置在它们之间的矩形微带线通过耦合探头探头。在第一阶段，天线的S-11作为其实部和虚部的零件，作为使用多层的Perceptron（MLP）在3至7GHz内的微带部件的几何形状的连续功能，并通过3D EM模拟数据验证。为了确定最合适的（MLP）架构和训练算法，测试了20种不同的MLP架构。然后，通过使用差分演进算法和基于MLP的模型对几何参数进行优化的S-11。天线用最佳选择的参数原型，并测量。从模拟和测量结果的比较来看，可以观察到测量结果与模拟结果一致，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，其设计方法在一起的设计方法。

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