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超外差接收
释义
超外差接收
Encyclopedia
工学
【通信基础理论】
释
superheterodyne receiving
超外差接收
将接收到的已调高频信号(即调制后的高频信号)送到混频器,然后与本地振荡器所产生的高频信号进行混频,在其输出端得到的波形包络形状与输入高频信号相同,但频率却降为某一固定中间频率(简称中频)的信号接收技术。
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Lagrange Charpit method
Lagrange-Charpit method
Lagrange condition
Lagrange continued fraction theorem
Lagrange coordinate
Lagrange coordinate system
Lagrange crater
Lagrange differential equation
Lagrange dynamics
Lagrange-d’Alembert equation
Lagrange equation
Lagrange equation of motion
Lagrange equation of the first kind
Lagrange equations for impact motion
Lagrange expansion
Lagrange expansion formula
Lagrange form
Lagrange formula
Lagrange four-square theorem
Lagrange function
Lagrange function of a moving charged particle
Lagrange group theorem
Lagrange identity
Lagrange inequality
Lagrange interpolation
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