LubLim Nres Band, (BSF) yog lwm hom kev xaiv zaus uas ua haujlwm sib txawv ntawm Band Pass Filter uas peb tau saib ua ntej. Lub lim dej nres band, tseem hu ua band reject filter, hla txhua qhov zaus tshwj tsis yog cov uas nyob hauv ib qho chaw nres uas tau teev tseg uas raug txo qis heev.
Yog tias qhov band nres no nqaim heev thiab attenuated heev dhau ob peb hertz, ces lub lim nres band feem ntau hu ua notch filter, vim nws qhov zaus teb qhia tau tias yog qhov tob notch nrog kev xaiv siab (qhov nkhaus ntxhab) es tsis yog qhov dav dua.
Tsis tas li ntawd, ib yam li cov lim dej band pass, cov lim dej band stop (band reject lossis notch) yog cov lim dej thib ob (ob-pole) uas muaj ob lub zaus txiav tawm, feem ntau hu ua -3dB lossis ib nrab-power points tsim cov bandwidth dav dav ntawm ob lub ntsiab lus -3dB no.
Tom qab ntawd lub luag haujlwm ntawm lub lim dej nres band yog dhau tag nrho cov zaus ntawm xoom (DC) mus txog rau nws thawj (qis dua) qhov chaw txiav zaus ƒL, thiab dhau tag nrho cov zaus saum nws qhov thib ob (sab saud) qhov txiav zaus ƒH, tab sis thaiv lossis tsis lees txais tag nrho cov zaus ntawd nyob nruab nrab. Tom qab ntawd cov lim bandwidth, BW yog txhais tias: (ƒH - ƒL).
Yog li ntawd, rau lub lim dej dav dav, qhov tseeb ntawm cov lim dej nres nyob nruab nrab ntawm nws cov ntsiab lus qis dua thiab sab saud -3dB thaum nws txo qis, lossis tsis lees txais txhua zaus ntawm ob qhov zaus txiav tawm no. Yog li ntawd, qhov nkhaus teb zaus ntawm lub lim dej nres zoo tagnrho yog muab.
Qhov zoo tagnrholim dej nresyuav muaj qhov tsis kawg attenuation hauv nws qhov stop band thiab xoom attenuation hauv ob qho pass band. Kev hloov pauv ntawm ob qho pass band thiab qhov stop band yuav yog ntsug (phab ntsa cib). Muaj ntau txoj hauv kev peb tuaj yeem tsim "Band Stop Filter", thiab lawv txhua tus ua tiav tib lub hom phiaj.
Cov chav tsev tuaj nrog tus qauv SMA lossis N poj niam connectors, lossis 2.92mm, 2.40mm, thiab 1.85mm connectors rau cov khoom siv zaus siab.
Peb kuj tseem tuaj yeem kho qhov loj meLim Nres Bandraws li koj xav tau. Koj tuaj yeem nkag mus rau nplooj ntawv kho kom haum rau koj kom muab cov lus qhia uas koj xav tau.
Lub sijhawm tshaj tawm: Lub Yim Hli-20-2022
