The application is based on the
antenna radiation efficiency testing method of the
noise injection balanced receiving
system: the normalized power pattern in the whole space
solid angle of the antenna is tested; the calibration
signal inside the
noise injection
receiver is obtained according to the balanced mode of the
noise injection
receiver; the antenna is connected to the input end of the noise injection balanced receiving
system, the
mouth surface calibration source is placed on the antenna, the temperature of the
mouth surface calibration source is set, the corresponding noise injection duration is output by the
processing collector, the antenna output
signal is obtained by using the balanced mode of the noise injection balanced receiving
system and the calibration
signal; the ideal output signal of the antenna without the influence of the
radiation efficiency is calculated by using the antenna power pattern, the temperature signal of the
mouth surface calibration source and the
darkroom temperature; the relationship between the antenna output signal obtained by the noise injection balanced receiving system and the ideal output signal of the antenna without the influence of the
radiation efficiency is established, and the
radiation efficiency of the antenna is calculated.