臺灣博碩士論文加值系統

在天線合成，當給定一天線陣列的權重和位置時，天線陣列的波束場型能被決定。此天線陣列的設計準則為最小化輻射場型的旁波瓣功率。在此論點中，粒子群最佳化演算法被用來決定二維天線陣列的位置，使得旁波瓣功率為最小。假設天線權重為常數，評估或適應函數被用來獲得目的為最小化視野範圍內旁波瓣功率的陣列幾何。模擬結果將會顯示出在某些抵達角度，二維天線陣列的旁波瓣功率比一維非均勻陣列好。

In antenna synthesis, given the weights and positions of the antenna array, the beampattern of the antenna array can be determined. The design criterion of the antenna array is to minimize the sidelobe level of the radiation pattern. In this thesis, a particle swarm optimization (PSO) algorithm is used to determine the positions of the two dimensional array such that the sidelobe level is minimized. Assuming that the antenna weight is constant, the evaluation or fitness function are derived for the array geometry with the goal of minimizing the sidelobe level in FOV. Simulation results show that the two-dimensional array gets better sidelobe level than the one dimensional non-uniform array at certain arriving angles.

目錄

誌謝辭
中文摘要
英文摘要
目錄
圖目錄
表目錄
中英對照
第一章 簡介
1.1 研究動機
1.2 論文架構
第二章 理論背景
2.1 定位方法
2.2 一維天線與多輸入多輸出天線原理
2.3 基因演算法
第三章 應用與分析
3.1 二維天線訊號模型
3.2 二維天線設計與分析
3.3 粒子群最佳化演算法
第四章 模擬結果
4.1 參數設定
4.2 模擬
4.3 模擬結果討論
第五章 結論
參考文獻
附錄一
作者簡介

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