本文首先指出了超外差接收机的固有缺点，即它有更多的虚假响应。
This paper first discusses the instinct disadvantage of a superheterodyne receiver, which is that it has more spurious response.
最后指出对于宽开接收机而言，抑制或减少虚假响应是设计超外差接收机的重要任务之一。
Finally, it points out that, as far as wide open receiver is concerned, to suppress or reduce the spurious response is one of the most important tasks in designing a superheterodyne receiver.
在现代通信系统中，毫米波频段通常采用超外差接收机，混频器作为第一级就成为关键部件。
The super-heterodyne receiver is always applied in modern communication system, mixer becomes the key component as is at the first part of system.
微带交指带通滤波器具有结构紧凑、易于批量生产的特点，适用于TVRO超外差接收机中作为镜像频率抑制滤波器。
Microstrip interdigital band-pass filters are compact and easy for batch manufacturing. They are suitable for applications in TVRO superheterodyne receivers as image-reject filters.
分别讨论了在理想假设和实际情况下超外差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.
分别讨论了在理想假设和实际情况下超外差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.
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