V2EX homodyne

Homodyne

Definition(释义)

同频的;同频检波/同频探测的:指在无线电或光学测量中,本振(local oscillator)与被测信号频率相同,从而进行混频、解调或相干测量(常见搭配:homodyne detection 同频探测)。

Pronunciation(发音,IPA)

/hmdan/(英式常见)
/hmdan/(美式常见)

Examples(例句)

The receiver uses homodyne detection to recover the audio.
接收机使用同频检波来还原音频。

In quantum optics experiments, a homodyne setup mixes the signal with a same-frequency local oscillator to measure field quadratures precisely.
在量子光学实验中,同频装置将信号与同频本振混合,从而精确测量光场的正交分量。

Etymology(词源)

homo- 表示“相同”(源自希腊语 homos),**-dyne** 与“力/功率”相关(源自希腊语 dynamis “力量”,也见于 dynamitedynamic 等词族)。该词在20世纪早期无线电工程语境中形成,用来描述“同频(零中频/相干)”的检波或接收方式。

Related Words(相关词)

Notable Works(常见出处/著作)

  • Optical Coherence and Quantum Optics(Leonard Mandel & Emil Wolf)
  • Quantum Optics(Marlan O. Scully & M. Suhail Zubairy)
  • Microwave Engineering(David M. Pozar)
  • Radiotron Designer’s Handbook(F. Langford-Smith,射频与电子管经典参考书,涉及检波与相关概念)
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