Two coherent signals with different primary phases radiated by two orthogonal in-space linear polarization antenna elements form an elliptical polarization wave.
两个初相不同的相参信号由两个在空间上正交的线极化天线单元辐射，将形成椭圆极化波。
They are part of the primary structural elements of the phone. this is part of brilliant engineering. It uses the band as part of the antenna system!
它们是手机的紧张布局构件的一部分（非常杰出的工程计划），它们是天线！
The primary function of the optical transmit antenna is to collimate far-field divergence of the laser beam and reduce the size of the laser beam in .
由于大气衰减的影响，非视线散射大气光通信需要使用光学天线以提高对光信号的采集能力，进而增加通信距离。
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