A 3mm band cooled low-noise mixer was designed and fabricated for the millimeter wave receiver of the first radioastronomical telescope in China. The mixer noise figure of 3.7 dB, and a conversion loss of 6.4 dB at room temperature is reported. The noise temperature of the mixer at 20K is T/sub M(DSB)/ - 150K; the total noise temperature of the receiver system is T/sub sys(DSB)/ - 232K.
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机译：为中国第一射线角图望远镜的毫米波接收器设计和制造了3毫米带冷却的低噪声混合器。报道了3.7dB的混合器噪声系数，以及在室温下的转换损耗为6.4 dB。混合器在20K时的噪声温度为T / SUB M（DSB）/ - 150K;接收器系统的总噪声温度为T / SUB SYS（DSB）/ - 232K。
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