https://scholars.lib.ntu.edu.tw/handle/123456789/633093
標題: | Radiation Optimization for Phased Arrays of Antennas Incorporating the Constraints of Active Reflection Coefficients | 作者: | HSI-TSENG CHOU Wu, Rui Zhe Akinsolu, Mobayode O. Liu, Yushi Liu, Bo |
關鍵字: | Active pattern | antenna array | antenna coupling | array synthesis | differential evolution (DE) | embedded pattern | 公開日期: | 1-十二月-2022 | 出版社: | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC | 卷: | 70 | 期: | 12 | 起(迄)頁: | 11707 | 來源出版物: | IEEE Transactions on Antennas and Propagation | 摘要: | High-power radiations from active antenna arrays may result in strong reflected power to cause RF device breakdown by the strong interelement mutual coupling. An excitation weighting synthesis of antenna arrays incorporating the constraint of active reflection/transmission coefficients between antenna elements is presented to optimize the radiation. It may enhance interelement isolation, reducing the effort of using sophisticated hardware-based structures that have difficulty in broad-angle beam steering. In the synthesis, the cost functions incorporate the difference between the optimized and the predefined excitation weightings of radiation patterns with limited reflected power or active reflection coefficients as a constraint. This article first introduces the basic concept to show the operational mechanisms. Practical definitions of cost functions are described to synthesize the radiation pattern considering the mutual coupling effects. The case without setting an initial desired radiation pattern is also examined for comparison. Numerical full-wave simulations are presented to validate the synthesis concepts by examining the characteristics of gain, sidelobe level (SLL), and port reflection coefficients. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/633093 | ISSN: | 0018926X | DOI: | 10.1109/TAP.2022.3209660 |
顯示於: | 電機工程學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。