摘要
本文提出了天线口面平均亮度的概念,给出了天线终端接有匹配噪声源和非匹配噪声源时天线口面平均亮温度的表达式。该式表明,无耗天线口面的平均亮温度仅与三个因素有关:噪声源的噪声温度,噪声源的反射系数和天线的面积利用系数。
This paper presents an idea for the average brightness temperature of antenna aperture and its expression for a lossless antenna with matched and unmatched noise sources. The expressions show that the average brightness temperature of antenna aperture relates with three factors: coefficient of useful area for antenna, noise temperature of noise sources and reflective coefficient of noise sources.
关键词
天线口面
亮温度
噪声温度
反射系数
Antenna aperture, Brightness temperature, Noise temperature, Reflective coefficient, Coefficient of useful area
