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.
现代通信系统中，混频器成为许多系统不可缺少的关键部件之一。
Mixer is one of the most key components in modern communication systems.
毫米波混频器是毫米波通信、雷达、电子对抗、测量等系统中的关键部件。
Mixer is the key component in the millimeter wave (MMW) communications, radar, electromagnetic countermeasure, and measurement systems.
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