叙述了3 mm中频比较辐射计的工作原理、电路结构、特性分析及实验结果,研究表明,这种辐射计不需3 mm开关,其稳定性优于全功率辐射计,而成本和尺寸均与全功率辐射计相差不大,完全可以满足小型化、实用化的需要.

A 3 mm band IF switch radiometer was proposed.On the basis of discussing the theory as well as circuit structure and features,the performance of experimental prototype was presented.The research and experiment results show that not only its stability is better than that of total power radiomenter,but its cost and size are just similar to the latter because of absence of 3 mm band switch.It can surely meet the need of practical use.