High zaus band pass lim yog cov khoom siv hluav taws xob tsim los tso cai tsuas yog ib qho tshwj xeeb ntawm cov teeb liab zaus dhau los thaum attenuating teeb liab ntawm ntau zaus sab nraud. Cov ntxaij lim dej no feem ntau siv hauv kev sib txuas lus, khoom siv suab, thiab lwm yam kev siv hluav taws xob uas xav tau cov lus teb meej meej. Hauv tsab ntawv no, peb yuav tshawb txog cov yam ntxwv tseem ceeb ntawm cov kab hluav taws xob ntau zaus dhau los, suav nrog lawv cov lus teb zaus, bandwidth, thiab Q-factor.
Zaus teb: Cov lus teb zaus ntawm lub siab zaus band pass lim txiav txim seb nws attenuates cov cim ntawm zaus sab nraum lub passband thiab ntau npaum li cas nws amplifies signals nyob rau hauv lub passband. Ib tug zoo-tsim high zaus band pass lim yuav muaj ib tug ntse hloov ntawm passband thiab stopband, nrog tsawg ripple nyob rau hauv lub passband. Cov duab ntawm qhov zaus teb nkhaus yog txiav txim los ntawm lub lim tus tsim, thiab nws muaj peev xwm ua cim los ntawm nws qhov chaw zaus thiab nws bandwidth.
Bandwidth: Lub bandwidth ntawm lub siab zaus band pass lim yog qhov ntau ntawm cov zaus uas tau tso cai dhau los ntawm lub lim nrog tsawg kawg nkaus attenuation. Nws yog feem ntau teev raws li qhov sib txawv ntawm sab sauv thiab sab qis -3 dB zaus, uas yog cov zaus uas lub lim lub zog tso tawm raug txo los ntawm 50% txheeb ze rau lub zog siab tshaj plaws hauv passband. Lub bandwidth ntawm lub siab zaus band pass lim yog qhov tseem ceeb uas txiav txim siab nws cov kev xaiv thiab nws tuaj yeem tsis lees txais cov cim tsis xav tau sab nraum lub passband.
Q-Factor: Q-factor ntawm lub siab zaus band pass lim yog ib qho kev ntsuas ntawm nws cov kev xaiv los yog sharpness ntawm lub lim zaus teb. Nws txhais tau tias yog qhov piv ntawm qhov nruab nrab zaus mus rau bandwidth. Q-factor siab dua sib haum mus rau qhov nqaim bandwidth thiab cov lus teb nrawm dua, thaum Q-factor qis sib haum mus rau qhov dav bandwidth thiab cov lus teb nrawm dua. Q-factor ntawm lub siab zaus band pass lim yog qhov tseem ceeb uas txiav txim siab nws qhov kev ua tau zoo hauv kev tsis lees paub cov cim tsis xav tau sab nraum lub passband.
Insertion Poob: Qhov kev poob qis ntawm lub siab zaus band dhau lub lim yog tus nqi ntawm cov teeb liab attenuation uas tshwm sim thaum lub teeb liab hla lub lim. Nws yog feem ntau qhia nyob rau hauv decibels thiab yog ib qho kev ntsuas ntawm ntau npaum li cas lub lim attenuates signals nyob rau hauv passband. Ib tug zoo-tsim high zaus band pass lim yuav tsum muaj tsawg kawg nkaus poob nyob rau hauv passband kom tsis txhob degrading lub teeb liab zoo.
Impedance Matching: Impedance matching yog ib qho tseem ceeb feature ntawm high zaus band pass lim, tshwj xeeb tshaj yog nyob rau hauv kev sib txuas lus systems. Lub input thiab output impedance ntawm lub lim yuav tsum sib phim rau qhov chaw thiab load impedance kom txo cov teeb liab reflections thiab optimize teeb liab hloov. Ib qho zoo sib xws high zaus band pass lim yuav muaj cov teeb liab tsawg tsawg thiab distortion.
Nyob rau hauv xaus, high zaus band pass lim yog cov khoom tseem ceeb nyob rau hauv hluav taws xob circuits uas yuav tsum tau meej zaus teb. Lawv cov yam ntxwv tseem ceeb suav nrog lawv cov lus teb zaus, bandwidth, Q-factor, qhov poob qis, thiab impedance txuam. Ib lub lim dej uas tsim tau zoo tshaj plaws yuav tsum muaj cov lus teb ceev ceev, qhov nqaim bandwidth, qhov poob qis tsawg, thiab impedance txuam kom ntseeg tau tias kev ua tau zoo.
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Post lub sij hawm: May-10-2023
