分别讨论了在理想假设和实际情况下超外产左接收机的双边带噪声系数和单边带噪声系数，给出了单边带接收机的某些设计方案。

This paper discussed the double sideband noise figures and single side band noise figures of the superheterodyne receivers in a ideal hypothesis and the practical case respectively.It also gave some considerations designing the single side band receiver.

TN851.408