• 作者： 黃廣志; 張順雄; 陳元煌
• 作者服務機構： 國立珠山大學電機工程研究所
• 中文摘要： 近年來，Er和Cantoni提出主波束微分限制增加主波束之寬度，以應用至適應性陣列系統，其波束隨著高階微分限制增加而增加，但卻犧牲太大的陣列增益。本論文係針對此現象提出一種適應性寬頻波束構成器之有效性架構。經由計算機模擬之結果，證明此系統之有效性，卻只衰減1.1 dB之陣列增益。
• 英文摘要： Recently, power minimization subject to derivative constraints in the spatial domain of adaptive ar-ray systems has been discussed by Er and Cantoni（1983). As result of high-order derivative constraints, thebeamwidth in the look direction could be made as broad as desired. However, this increased beamwidthwas achieved at the cost of over-reducing array gain (Er and Cantoni, 1983). To overcome this problem,this paper proposes a new structure for the adaptive broadband beamforming system which may obtain abroader beamwidth in the look direction without imposiing derivative constraints on the adaptive proces-sor. In the computer simulations, the proposed system, though with 1.1 dB of reduction in the arraygain，works more efficiently than the conventional Frost beamformer with derivative constraints.
• 中文關鍵字： adaptive array; adaptive beamforming
• 英文關鍵字： --