抛物面天线

/ pāo wù miàn tiān xiàn /

1
parabolic antenna
抛物面天线：一种用于接收和发送无线电波的天线，其特点是具有抛物线形状的反射器，能够将信号聚焦在一个点上，从而提高接收和发送的性能。

1
[电讯] parabolic antenna
抛物面天线（Parabolic Antenna）与碟型、碗型天线属同一類型，具有强烈的电波收发方向性，所谓抛物面是指弯弧部位的曲线類似抛物线。
2
dish antenna
... disengaging shaft 疏散轴 dish antenna 抛物面天线 dish brake 盘式制动器 ...
3
Paraboloid dish antenna
... 匿名 Anonymity 抛物面天线 Paraboloid dish antenna 频带置乱 band scrambling ...
4
[电讯] parabolic aerial
... parabola 抛物面反射器 parabolic aerial 抛物面天线 parabolic antenna 抛物面天线 ...

短语

1
本文提出了大型抛物面天线结构风振响应分析的随机振动方法。
The random vibration method for the analysis of large parabolic antenna structure response to wind load is proposed in this paper.
2
接着求出口径上的电磁场，进而归纳出抛物面天线口径场的四大共同特征。
Next the electromagnetic field on aperture was found, and then proceeded to sum up five common features of aperture field of parabolic antenna.
3
分析了偏角馈入抛物面天线远旁瓣回波产生的机理，并经实验验证了远旁瓣回波的存在。
The generation of far side lobe echoes for offset parabolic antenna is analysed in this article, and the experiments have proved the existence of far side lobe echoes.

抛物面天线
抛物面天线是指由抛物面反射器和位于其焦点上的照射器(馈源)组成的面天线。通常采用金属的旋转抛物面、切制旋转抛物面或柱形抛物面作为反射器，采用喇叭或带反射器的对称振子作馈源。

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