超外差接收机中有一个振荡器叫本机振荡器。它产生的高频电磁波与所接收的高频信号混合而产生一个差频,这个差频就是中频。如要接收的信号是900KHZ.本振频率是1365KHZ.两频率混合后就可以产生一个465KHZ或者2265KHZ的差频。接收机中用LC电路选择465KHZ作为中频信号。超外差(superheterodyne)原是超声外差(supersonic heterodyne)的缩写,并非指本振源频率比信号频率高。
adj. superheterodyne
与传统的 3 阶段式超外差 (Superheterodyne) 向量讯号分析器不同,此架构仅需于各个通道之间同步化单一局部震荡器 (Local oscillator,LO),因此为设定相位同调应用最简单的...
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high performance superheterodyne receiver 高性能超外差式接收机 superheterodyne receiver superheterodyne 超外差 dual-conversion superheterodyne receiver 双变频超外差式接收机 ..
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超外差接收机 [电讯] Superheterodyne Receiver ; superheterodyne ; superhet receiver ; [电讯] ultradyne receiver
超外差机 infradyne
超外差式收音机 superheterodyne receiver ; superheterodyne radio set
超外差电路 tropadyne ; superheterodyne circuit
双变频超外差接收机 [电讯] double superheterodyne receiver
超外差式接收机 [电讯] superheterodyne receiver ; receiver superheterodyne
超外差分光计 superheterodyne spectrometer
光学超外差接收器 optical superheterodyne receiver ; optical coolheterodyne receiver
光学超外差酌 optical superheterodyning
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艾德温?阿姆斯特朗开发接收机电路—超外差式收音机。
Edwin armstrong develops a receiving circuit-the superheterodyne.
简朴分析了超外差式调幅收音机电路的工作原理及其组装和调试。
A simple analysis of the superheterodyne AM radio circuit and the principle of assembly and debugging.
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.
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