Kev paub txog theem ntawm cov cim qhia ua kom muaj kev sib koom ua ke. Quadrature sampling ua rau nws yooj yim dua los ntsuas qhov ntsuas tam sim ntawd (AM demodulation), theem tam sim (theem demodulation), thiab tam sim no zaus (FM demodulation) ntawm x bp (t) input signal hauv daim duab 14.
Lub hom phiaj ntawm plaub hau yog dab tsi?
Quadrature encoders yog siv nyob rau hauv bidirectional txoj hauj lwm sensing thiab ntev ntsuas daim ntaub ntawv Txawm li cas los xij, hauv qee qhov kev siv unidirectional pib-nres, nws yog ib qho tseem ceeb kom muaj cov ntaub ntawv bidirectional (Channel A & B) txawm tias rov qab tig ntawm tus ncej tsis tau xav txog.
quadrature signals yog dab tsi?
Ib khub ntawm lub sijhawm qhia tau hais tias nyob rau hauv "quadrature" thaum lawv txawv ntawm theem los ntawm 90 degreesLub "hauv-theem" lossis cov teeb liab siv tau raug xa mus rau "Kuv," thiab lub teeb liab uas tau hloov los ntawm 90 degrees (lub teeb liab hauv plaub fab) hu ua "Q." Qhov no txhais li cas thiab vim li cas peb mob siab?
Vim li cas cov tswv yim am demodulators siv lub quadrature receiver?
Quadrature demodulation tuaj yeem siv los ua AM demodulator uas yog sib xws nrog tsis muaj theem synchronization ntawm transmitter thiab receiverI thiab Q waveforms uas tshwm sim los ntawm quadrature demodulation yog sib npaug rau tiag tiag thiab xav txog qhov chaw ntawm tus lej complex.
Vim li cas IQ kev hloov pauv siv?
IQ modulators yog ntau lub tsev thaiv rau RF systemsCov ntawv thov feem ntau yog tsim cov teeb liab RF rau kev sib txuas lus digital..
