Simulated results show that the directivity and the gain of the array are improved.
模拟结果表明，天线阵的方向性以及增益都得到了加强。
Audio directional loudspeaker is a novel loudspeaker which can generate an audio signal with high directivity by utilizing the parametric array principle.
声频定向扬声器是利用参量阵原理，产生高指向性声频信号的新一代扬声器。
It is proposed to use the energy concentration factor and directivity factor as indication of the directivity of the array, and formulae as well as the way of using them are presented.
对切比雪夫阵的指向性提出了用能量集中因数和指向性因数表达的概念，并给出了二者的计算方法和使用范围。
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