2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Demodulation is extracting the original information-bearing signal from a carrier yoj. Lub demodulator yog ib qho hluav taws xob hluav taws xob (lossis khoos phis tawj program hauv lub xov tooj cua software-txhais lus) uas yog siv los rov qab cov ntaub ntawv cov ntsiab lus los ntawm kev hloov pauv cov cab kuj yoj.
demodulation tshwm sim nyob qhov twg?
Demodulation yog txheej txheem tseem ceeb hauv txais tos ntawm ib qho amplitude modulated signals txawm siv rau kev tshaj tawm lossis ob txoj xov tooj cua sib txuas lus. Demodulation yog cov txheej txheem los ntawm cov thawj cov ntaub ntawv bearing teeb liab, piv txwv li cov modulation yog muab rho tawm los ntawm tag nrho cov tau txais cov teeb liab.
Cov cuab yeej twg peb siv rau AM demodulation?
A diode detector yog cov khoom siv yooj yim tshaj plaws siv rau AM demodulation. Lub diode ntes tau tsim nrog lub diode thiab ob peb lwm yam khoom. Modems yog siv rau ob qho tib si modulation thiab demodulation.
Vim li cas peb thiaj xav tau kev hloov pauv thiab kev hloov pauv?
Modulation yog kauj ruam tseem ceeb hauv kev xa cov teeb liab. Peb cov lus teeb liab feem ntau yog lub teeb liab tsawg zaus thiab txoj kev poob ntawm lub teeb liab yog proportional rau lub square ntawm wavelength (thiab li no inversely proportional rau lub square ntawm zaus).
qhov kev hloov pauv thiab kev siv demodulation nyob qhov twg?
Ib tus modem (los ntawm modulator–demodulator), siv hauv kev sib txuas lus bidirectional, tuaj yeem ua ob qho haujlwm. Cov zaus band nyob los ntawm cov teeb liab modulation yog hu uabaseband, thaum lub suab ntau zaus nyob los ntawm tus cab kuj hloov pauv hu ua passband.
Pom zoo:
Peb siv qhov twg los ntsuas kev siv tau?
Kev ntsuas kev siv tau ua ntej ib qho kev txiav txim siab tsim qauvtau ua pab peb txheeb xyuas cov neeg siv qhov mob tseem ceeb tshaj plaws. Los ntawm kev soj ntsuam seb cov neeg siv coj li cas, peb tuaj yeem nthuav tawm cov kev xav tau latent uas tib neeg tsis hais thaum sib tham lossis kev soj ntsuam.
Thaum peb tsis lees paub tautology peb tau txais?
1. Ib tug tautology yog qhov tseeb ntawm txhua kab ntawm nws qhov tseeb- rooj, yog li thaum koj tsis lees paub qhov tautology, cov kab lus tshwm sim yog cuav ntawm txhua kab ntawm nws lub rooj. Ntawd yog, qhov kev tsis pom zoo ntawm tautology yog TT-kev sib cav.
Thaum twg siv i.e. thiab thaum twg siv xws li?
I.e. yog ib qho luv luv rau kab lus id est, uas txhais tau tias "uas yog." I.e. yog siv los rov hais dua ib yam dab tsi uas tau hais yav dhau los txhawm rau kom meej nws lub ntsiab lus. E.g. luv luv rau exempli gratia, uas txhais tau tias "
Peb puas yuav cia siab tias peb yuav tau txais kev txhawb nqa thib peb?
Teb: Ntau lab tus neeg Asmeskas twb tau txais lawv qhov kev ntsuas thib peb. Thiab IRS yuav xa tawm ntau dua ob peb lub lis piam tom ntej. Yog li, yog tias koj tseem tsis tau txais koj cov nyiaj them poob haujlwm (piv txwv tias koj tsim nyog tau txais kev them nyiaj), nws yuav tsum tuaj sai sai.
Thaum twg peb xav txog daim duab peb sab ua equiangular?
Ib daim duab peb sab uas nws tag nrho peb sab thiab sab hauv cov ces kaum sib npaug yog hu ua daim duab peb sab equiangular. Rau ib daim duab peb sab kom sib npaug, qhov ntsuas ntawm tag nrho nws peb lub kaum sab hauv yuav tsum sib npaug li 60 degrees.
