国产X011型同轴热噪声标准最近由上海无线电仪器厂和中国计量科学院联合研制成功,经过有关部门技术鉴定,符合设计要求。 X011型同轴热噪声标准可作为我国噪声量值的国家标准,满足国内相应频段噪声测试和量值统一的急需。它可以用来计量各级噪声仪器的量值标准,也可用来鉴别超高频低噪声半导体器件的噪声数值。该装置的标准噪声源是由负载终端和一段同轴传输线组成。它的接收系统是由高频调制器、高频头、平衡指示器、中频噪声发生器、记录仪、波形监示器、高频 China-made coaxial coaxial noise model X011 recently by the Shanghai Radio Instrument Factory and China Institute of Metrology jointly developed by the relevant departments of technical appraisal, in line with design requirements. X011 coaxial thermal noise standard can be used as the national standard of noise in China, to meet the domestic frequency band noise test and the urgent need to unify the value. It can be used to measure the level of noise instruments at all levels of the standard, can also be used to identify ultra-high frequency low noise semiconductor devices noise figure. The device’s standard noise source consists of a load terminal and a section of coaxial transmission line. Its receiving system is composed of high-frequency modulator, tuner, balance indicator, IF noise generator, recorder, waveform monitor, high frequency