Tace Tace Tace Masu Mutuwaza a iya yi ta hanyar haɗa tare da ƙananan matattarar wucewa tare da babban tacewa
Za a iya amfani da Filter Passive Band Pass don keɓe ko tace wasu mitoci waɗanda ke kwance a cikin wani rukuni ko kewayon mitoci. Mitar yanke-kashe ko ƒc a cikin sauƙi mai sauƙi na RC passive filter ana iya sarrafa shi daidai ta hanyar amfani da resistor guda ɗaya kawai a cikin jerin tare da capacitor mara ƙarfi, kuma dangane da wace hanya aka haɗa su, mun ga cewa ko dai an sami Low Pass ko Babban Tacewar Tafi.
Amfani guda ɗaya mai sauƙi don waɗannan nau'ikan filtata masu wucewa shine a aikace-aikacen amplifier audio ko da'irori kamar a cikin matatun lasifikar crossover ko sarrafa sautin pre-amplifier. Wani lokaci ya zama dole kawai a wuce wasu mitoci waɗanda ba su farawa a 0Hz, (DC) ko ƙare a wani babban wurin mitoci na sama amma suna cikin wani takamaiman kewayon ko band na mitoci, ko dai kunkuntar ko fadi.
Ta hanyar haɗawa ko "cascading" tare da da'irar Filter Low Pass guda ɗaya tare da High Pass Filter circuit, za mu iya samar da wani nau'in tacewa na RC mai wucewa wanda ya wuce kewayon da aka zaɓa ko "band" na mitoci waɗanda za su iya zama ko dai kunkuntar ko fadi yayin da ke rage duk waɗanda ke wajen wannan kewayon. Wannan sabon nau'in tsarin tacewa mai wucewa yana samar da matattarar zaɓen mitar da aka fi sani da Band Pass Filter ko BPF a takaice.
Ba kamar ƙananan matatun wucewa ba wanda kawai ke wuce sigina na ƙananan kewayon mitar ko babban tacewar wucewa wanda ke wuce sigina na kewayon mafi girma, Band Pass Filters yana wucewa da sigina a cikin wani “band” ko “yaɗa” mitoci ba tare da karkatar da siginar shigarwa ko gabatar da ƙarin amo ba. Wannan rukunin mitoci na iya zama kowane faɗi kuma ana san shi da maƙallan masu tacewa.
Bandwidth yawanci ana bayyana shi azaman kewayon mitar da ke tsakanin ƙayyadaddun wuraren yanke yanke mitoci guda biyu ( ƒc), waɗanda suke 3dB ƙasa da matsakaicin matsakaicin tsakiya ko kololuwar ƙara yayin ragewa ko raunana wasu a wajen waɗannan maki biyu.
Sannan don mitoci masu yaɗuwa, za mu iya kawai ayyana kalmar “bandwidth”, BW a matsayin bambanci tsakanin ƙananan yanke yanke ( ƒcLOWER ) da maki mafi girma yanke-kashe ( ƒcHIGHER). A wasu kalmomi, BW = ƒH - ƒL. A bayyane yake don madaidaicin band ɗin wucewa ya yi aiki daidai, ƙimar yankewar ƙarancin wucewar matattara dole ne ya zama mafi girma fiye da mitar yankewa don babban tacewar wucewa.
Hakanan za'a iya amfani da Filter ɗin “madaidaici” don keɓe ko tace wasu mitoci waɗanda ke kwance a cikin wani rukunin mitoci, misali, soke amo. Matsalolin wucewa ana san su gabaɗaya azaman filtattun oda na biyu, (Pole-biyu) saboda suna da “biyu” ɓangaren amsawa, masu ƙarfi, a cikin ƙirar kewayen su. Daya capacitor a cikin ƙananan wucewa da kuma wani capacitor a cikin babban da'irar wucewa.
Maɓallin Bode Plot ko mitar amsa mitar da ke sama yana nuna halayen matatar wucewar band. Anan ana rage siginar a ƙananan mitoci tare da haɓakar fitarwa a gangara na +20dB/Decade (6dB/Octave) har sai mitar ta kai madaidaicin “ƙananan yanke” ƒL. A wannan mitar ƙarfin fitarwa yana sake zama 1/√2 = 70.7% na ƙimar siginar shigarwa ko -3dB (20*log(VOUT/VIN)) na shigarwar.
Fitowar yana ci gaba a matsakaicin riba har sai ya kai ga maƙasudin “yanke na sama” ƒH inda fitarwar ta ragu a cikin adadin -20dB/Decade (6dB/Octave) yana rage kowane sigina mai girma. Maƙasudin madaidaicin ribar fitarwa shine gabaɗaya ma'anar lissafi na ƙimar -3dB tsakanin ƙananan wuraren yanke yanke ƙasa da babba kuma ana kiranta "Frequency Center" ko "Resonant Peak" ƙimar ƒr. Ana ƙididdige wannan ƙimar ma'anar geometric azaman kasancewa ƒr 2 = ƒ(BAMA) x ƒ(LOWER).
Aband wucewa taceana ɗaukarsa azaman nau'in tacewa na biyu (biyu-pole) saboda yana da abubuwan amsawa "biyu" a cikin tsarin da'irar sa, sa'an nan kusurwar lokaci zai zama sau biyu na abubuwan da aka gani a baya, watau 180o. Matsakaicin kusurwar siginar fitarwa LEADS na shigarwar ta +90o har zuwa tsakiya ko mitar resonant, ƒr batu idan ya zama "sifili" digiri (0o) ko "in-phase" sannan ya canza zuwa LAG shigarwa ta -90o yayin da yawan fitarwa ya karu.
Za'a iya samun madaidaitan yanke-tsaye na sama da na ƙasa don matatar wucewa ta band ta amfani da dabara iri ɗaya kamar na duka matattara mai ƙarami da babba, Misali.
Raka'a sun zo daidai da masu haɗin SMA ko N mata, ko 2.92mm, 2.40mm, da 1.85mm masu haɗawa don manyan abubuwan haɗin mitoci.
Hakanan zamu iya keɓance Tacewar Wuta ta Band bisa ga buƙatun ku. Kuna iya shigar da shafin keɓancewa don samar da ƙayyadaddun bayanai da kuke buƙata.
Lokacin aikawa: Satumba-06-2022
