Qhov twg hauv qab no tsis yog txheej txheem rau fm demodulation?

Cov txheej txheem:

Qhov twg hauv qab no tsis yog txheej txheem rau fm demodulation?
Qhov twg hauv qab no tsis yog txheej txheem rau fm demodulation?

Video: Qhov twg hauv qab no tsis yog txheej txheem rau fm demodulation?

Video: Qhov twg hauv qab no tsis yog txheej txheem rau fm demodulation?
Video: Ntshav Muag Los [ Hu dua Maiv Ntxhais ] Nkauj Tshiab 2021-2022 2024, Lub peb hlis ntuj
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Yog li, zaus demodulator yog zaus rau amplitude converter circuit. 11. Qhov twg hauv qab no tsis yog txheej txheem rau FM demodulation? Kev piav qhia: Ntau yam txuj ci xws li nrhiav kev nqes hav, xoom hla kev tshawb pom, theem xauv kev ntxub ntxaug thiab kev tshawb nrhiav plaub fabyog siv los demodulate FM.

Yuav ua li cas hom kev siv hauv FM demodulation?

Ib qho yooj yim thiab ua tau zoo FM demodulation txheej txheem suav nrog cov lim siab dhau (rau FM-rau-AM hloov dua siab tshiab) ua raws li AM demodulator. Lub high-pass-filter-based FM demodulator yog ua ntej los ntawm kev txwv kom tsis txhob muaj qhov sib txawv ntawm qhov sib txawv los ntawm kev ua yuam kev rau lub teeb liab demodulated.

Dab tsi ntawm cov hauv qab no yog cov kev hloov pauv zaus?

Kev hloov pauv zaus siv suav nrog FM xov tooj cua tshaj tawm, sib nqus daim kab xev kaw lus, saib xyuas cov menyuam yug tshiab rau qaug dab peg ntawm EEG, radar, seismic prospecting, suab synthesis, telemetry, ob txoj kev xov tooj cua systems, thiab video-transmission systems.

Dab tsi yog cov txheej txheem rau FM yoj kuaj pom?

Ob txoj hauv qab no demodulate FM yoj

  • Frequency discrimination method.
  • Phase kev ntxub ntxaug.

Qhov twg hauv qab no tsis yog ib feem ntawm kev hloov kho?

Ua tiav cov lus teb ib kauj ruam: Cov khoom siv amplitude modulationtsis yog hom kev ntsuas ntsuas, xws li tawm tsam AM (Amplitude modulation index), FM (Frequency modulation index) thiab PM (Phase modulation index), uas yog piv txwv ntawm kev ntsuas ntsuas.

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