期刊刊名：科學與工程技術期刊 　 卷期：1卷2期

篇名出版日期：2005年9月1日

作者：Wei-chiang Wu,Yuan-jiun Wang,武維疆,王元鈞

語言：English

關鍵字：beam pattern,weights, minimum-mean-square-error,discrete Fourier transform,sidelobe,transition,波束型態,陣列天線之天線權值,最小均方誤差,離散傅立葉轉換,窗函數,旁波帶,過渡帶

被點閱次數：3次

閱讀時間：8sec

摘要：
This report aims to provide a systematic study of several beam-pattern generation algorithms in an antenna array system. The weights are derived to best approximate a desired array pattern, either in a minimum-mean-square-error (MMSE) sense or to satisfy specific array pattern requirements. By sampling the specified (desired) spatial response at regular intervals, the first method performs a discrete Fourier transform (DFT) directly on the sampled sequence to derive the weights. The second method is premised on choosing appropriate window functions to attain the goals of sidelobe attenuation and steep transition from passband to stopband. Simulation results demonstrate that the generated beam pattern can be flexibly shaped, steered, and gain-controlled for practical requirements.

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