另一方面，iPhone的大部分界面做了物理空间来提供一个简单的按钮和喇叭。

On the other hand, much of the iPhone’s face is used up by physical space that’s devoted to a simple button and speaker.

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本文介绍一种在喇叭口径上具有幅度锥削的相位校正的E面扇形喇叭。

In this paper, an e-plane sectoral horn with amplitude taper and phase correction in the aperture is presented.

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与通常的E面扇形喇叭比较，这种喇叭具有较低的副瓣电平，短的喇叭长度和宽的张角。

Compared with conventional Eplane sectoral horn, it has low sidelobe level, short physical length and wide flare Angle.

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