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| Topology and shape optimization based method for miniaturization design of metallic antenna |
| Received:October 17, 2018 Revised:January 05, 2019 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20181017002 |
| KeyWord:metallic antenna miniaturized design topology optimization shape optimization method of moments |
| Author | Institution |
| 刘川 |
大连理工大学 工业装备结构分析国家重点实验室, 大连 |
| 王奇 |
大连理工大学 工业装备结构分析国家重点实验室, 大连 |
| 高仁璟 |
大连理工大学 工业装备结构分析国家重点实验室, 大连 |
| 刘书田 |
大连理工大学 工业装备结构分析国家重点实验室, 大连 |
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| Abstract: |
| Advanced design methods are required for the design of miniaturized antenna.Grey elements often exist in topology optimization based designs,which results in difficulties in practical applications,so further regularization of the design is needed.As for an electromagnetic metallic structure,the design performance usually changes when the density threshold based method is applied,which leads to deviation of the performance of the optimal result.In this paper,a topology and shape optimization based method is proposed for the miniaturization design of a metallic antenna.The concept configuration of the antenna is obtained through topology optimization firstly.Then a shape optimization scheme is carried out for the boundary regularization.The boundary of the antenna is described with Bezier curves.By adjusting the location of points of the Bezier curves,the shape of the antenna can be flexibly optimized.The principle for setting the control points is provided in this paper,with which detailed features of the topology configuration can be effectively regulated with fewer points.With the proposed method,the grey elements are removed and the deteriorated performance issue caused by density threshold method is avoided.Moreover,the boundary of the antenna is much smoother to ensure the antenna can be easily fabricated.Numerical examples show that the proposed method is effective for the miniaturized design of metallic antennas.This method can also be extended to the optimization of other metallic devices. |
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