We describe the basics of the cosmic microwave background radiation (CMB), and the physics of its anisotropy and polarization.

文章对微波背景辐射的各向异性、偏振及宇宙电离的历史给出了评述性介绍。

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Pyroelectric material can bring polarization with the variable temperature caused by infrared radiation.

热释电材料在吸收红外辐射后其温度会发生变化，从而产生极化。

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For the two operating frequencies of the proposed antenna, the same polarization planes and broadside radiation patterns are obtained.

该天线在两个频段有相同的极化平面和较宽的辐射波束。

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