類電磁演算法結合渾沌搜尋應用於通訊陣列最佳化

Application of Electromagnetism-Like Algorithm Together with Chaos Searching to Optimization of Antenna Arrays

湯伊鴻(Yi-Hung Tang) ； 楊士杰(Shih-Jie Yang) ； 李坤洲(Kun-Chou Lee)

《興大工程學刊》 22卷3期 (2011/11) Pp. 107-115

https://doi.org/10.6287/JENCHU.2011.2203.03

摘要

在佈設無線通訊的天線陣列時，經常須要作通訊陣列最佳化，使副波瓣的輻射場型壓制到最低，以減少接收干擾訊號的機會。由於佈設天線陣列茲事體大，如能事先有效率的先作電腦最佳化模擬設計，將可大大地降低錯誤佈設的機率，並減少硬體成本。本研究使用類電磁演算法混合渾沌演算法，在限制某個半功率波束寬度下的前提下，去調整天線元素的位置及激發權重，來使副波瓣的輻射場型壓制到最低。除了最佳化之外，本研究並比較混合渾沌與無混合渾沌的類電磁演算法之間的差異，結果發現混合渾沌後的類電磁演算法，可以比較有效率地處理天線陣列最佳化問題。

關鍵字

天線陣列 ； 類電磁演算法 ； 渾沌 ； 最佳化

並列摘要

In installing antenna arrays of wireless communication systems, communication arrays are often optimized so that the side-lobe level is minimized. The goal is to reduce influences of interferences. Because building antenna arrays is difficult and expensive, optimization design by computer simulation in advance is required. In this paper, we utilized the Electromagnetism-like Algorithm with Chaos searching to implement optimization of antenna arrays. The side-lobe level of an antenna array is minimized by adjusting positions and exciting weights of array elements under the constraint of certain beam-width limitation. In addition, results with and without Chaos searching are compared. The results show that techniques of Electromagnetism-like Algorithm mixed with Chaos searching can efficiently achieve optimization of antenna arrays.

並列關鍵字

antenna arrays ； electromagnetism-like algorithm ； chaos ； optimization