Raws li kev sib txuas lus thev naus laus zis tau nce zuj zus, cov cuab yeej sib txuas lus tau ua lub luag haujlwm tseem ceeb hauv lub neej niaj hnub no. Los ntawm cov xov tooj ntawm tes mus rau kev sib txuas lus satellite, los ntawm wireless tes hauj lwm mus rau fiber optic transmissions, kev ua tau zoo thiab kev ruaj ntseg ntawm cov khoom siv sib txuas lus ncaj qha cuam tshuam rau kev ua tau zoo thiab kev hloov cov ntaub ntawv zoo. Hauv cov khoom siv no, muaj peev xwm tiv thaiv lub suab nrov siab yog qhov qhia txog kev ua haujlwm tseem ceeb. Tsab ntawv xov xwm no yuav tshawb txog qhov tseem ceeb ntawm kev txwv lub suab nrov nrov hauv cov khoom siv sib txuas lus, cov teeb meem cuam tshuam, thiab lwm yam kev ntsuas.
Kev cuam tshuam ntawm High Ripple Noise
Lub suab nrov ripple feem ntau yog tshwm sim los ntawm kev hloov pauv thiab cov txheej txheem rectification hauv cov khoom siv hluav taws xob. Cov suab nrov no manifests me me tab sis nquag voltage hloov pauv superimposed ntawm lub hwj chim tso zis. Rau cov khoom siv sib txuas lus, lub suab nrov nrov tuaj yeem muaj qhov cuam tshuam hauv qab no:
1. **Signal Interference**: Lub suab nrov ripple ncaj qha cuam tshuam nrog kev sib txuas lus, ua rau teeb liab distortion thiab nce me ntsis yuam kev. Qhov no yog tshwj xeeb tshaj yog ib qho tseem ceeb rau high-frequency signals, uas yog ntau raug rau high-frequency suab cuam tshuam.
2. ** Khoom ruaj khov **: Cov khoom siv sib txuas lus yuav tsum muaj lub zog ruaj khov. Lub suab nrov nrov ua rau lub zog hluav taws xob tsis ruaj khov, cuam tshuam rau kev ua haujlwm ib txwm ntawm cov khoom siv thiab ua rau muaj kev ua haujlwm tsis zoo.
3. **Signal Integrity**: Hauv kev sib txuas lus digital, lub suab nrov nrov ua rau lub teeb liab jitter thiab lub sijhawm yuam kev, cuam tshuam rau qhov tseeb thiab kev ntseeg siab ntawm kev xa cov ntaub ntawv.
High Ripple Noise Suppression Techniques
Txhawm rau txhim kho kev ua tau zoo thiab kev ruaj ntseg ntawm cov khoom siv sib txuas lus, kev ntsuas zoo yuav tsum tau coj los ua kom muaj suab nrov nrov. Cov hauv qab no yog qee qhov kev siv feem ntau siv:
1. Lim Circuit Design
Lim circuits yog txoj kev siv suab nrov tshaj plaws. Los ntawm kev siv LC (inductor thiab capacitor) cov ntxaij lim dej ntawm lub zog tso zis, cov zis hluav taws xob tuaj yeem ua kom zoo, txo cov suab nrov nrov. Rau lub suab nrov dua, cov lim dej tseem yog qhov kev xaiv zoo.
2. Optimized Circuit layout
Kev tsim qauv ntawm lub rooj tsav xwm Circuit Court yog qhov tseem ceeb rau kev tawm suab nrov. Ib qho kev tsim qauv zoo yuav txo tau qhov cuam tshuam ntawm electromagnetic cuam tshuam thiab lub suab nrov nrov coupling. Cov txheej txheem tshwj xeeb suav nrog kev khaws cov suab nrov nrov kom deb ntawm cov kab hluav taws xob rhiab, siv ntau txheej PCBs los ua kom zoo dua hauv av thiab tiv thaiv, thiab txo txoj kev sib kis ntawm cov teeb liab siab.
3. Cov txheej txheem tiv thaiv thiab av
Kev siv cov ntaub thaiv npog tuaj yeem cais qhov chaw ntawm electromagnetic cuam tshuam, tiv thaiv cov suab nrov nrov los ntawm kev tawm. Kev tsim qauv hauv av zoo muab txoj hauv kev qis impedance kom sai sai dissipate suab nrov rau hauv av, txo kev cuam tshuam rau cov khoom siv. Lub hnub qub grounding yog ib txoj hauv kev, uas txo cov suab nrov hauv av los ntawm kev sib txuas tag nrho cov ntsiab lus hauv av mus rau ib qho chaw.
4. Tsis tshua muaj suab nrov Amplifiers (LNA)
Thaum lub sij hawm lub teeb liab amplification theem, siv lub suab nrov nrov amplifiers (LNAs) tuaj yeem txo qhov cuam tshuam ntawm lub suab nrov ntawm lub teeb liab. LNAs muaj qhov nce siab thiab tsis tshua muaj suab nrov, tso cai rau lawv kom nthuav dav cov cim qhia thaum txo cov suab nrov.
Lub suab nrov ripple tiv thaiv muaj peev xwm yog qhov tseem ceeb hauv kev tsim cov khoom siv sib txuas lus. Los ntawm kev siv cov lim dej lim dej, ua kom zoo tshaj plaws hauv Circuit Court layouts, siv cov txheej txheem tiv thaiv thiab hauv av, thiab siv cov suab nrov qis, lub suab nrov nrov tuaj yeem cuam tshuam zoo, txhim kho kev ua haujlwm thiab kev ruaj ntseg ntawm cov khoom siv. Nyob rau hauv lub neej yav tom ntej, raws li kev sib txuas lus thev naus laus zis txuas ntxiv mus, cov cuab yeej siv suab nrov thiab cov txheej txheem tshiab yuav tshwm sim, muab kev ruaj ntseg ntau dua rau kev sib txuas lus zoo.
Cov kev sib tham saum toj no qhia txog qhov tseem ceeb ntawm cov suab nrov nrov ripple inhibition muaj peev xwm rau kev ua tau zoo thiab ruaj khov ntawm cov khoom siv sib txuas lus. Tsuas yog los ntawm kev txhim kho txuas ntxiv ntawm kev tsim qauv thiab kev siv cov thev naus laus zis siab heev tuaj yeem ua kom ntseeg tau tias cov khoom siv sib txuas lus ua haujlwm ib txwm nyob hauv cov cheeb tsam electromagnetic nyuaj thiab xa cov kev pabcuam kev sib txuas lus zoo.
