Wararka Warshadaha

Qaab dhismeedka aasaasiga ah ee albaabka garaashka fog

2021-11-11
Qaybta gudbinta eefogaanta albaabka garaashkaGuud ahaan waxa loo qaybiyaa laba nooc, kuwaas oo kala ah, kontoroolka fogfog( fogaanta garaashka albaabka)iyo moduleka gudbinta. Koontaroolka fog iyo moduleka ka-hortagga fog waxaa loogu talagalay habka isticmaalka. Xakamaynta fog waxaa loo isticmaali karaa si madax-banaan sida mashiinka dhamaystiran, iyo xariiqda dibedda ka baxaysa waxay leedahay madaxa xargaha xargaha; Habka kontoroolka fog waxaa loo isticmaalaa sidii qayb ka mid ah wareegga waxaana lagu dabaqaa si waafaqsan qeexitaankeeda pin. Faa'iidada isticmaalka qalabka kontoroolka fogaanta waa in si aan kala go 'lahayn loogu xiri karo wareegga codsiga, mugga yar, qiimaha hooseeya iyo isticmaalka ugu fiican ee wax walba. Si kastaba ha ahaatee, isticmaaluhu waa inuu si dhab ah u fahmo mabda'a wareegga. Haddii kale, way ku habboon tahay in la isticmaalo kontoroolka fogaanta.

Guud ahaan marka loo eego, qaybta helaysa eefogaanta albaabka garaashkawaxa kale oo loo qaybiyaa laba nooc oo kala ahsuper heterodyne garaashka albaabka fogiyo habka qaabilaadda dib-u-soo-noolaynta saregaraashka albaabka fog. Wareegga dib-u-kicinta sare ee dib-u-kicinta waxaa sidoo kale loo yaqaannaa wareegga ogaanshaha dib-u-cusboonaynta. Dhab ahaantii, waa wareegga ogaanshaha dib-u-kicinta ee ka shaqeeya gobolka oscillation-ka ee dhexdhexaadka ah. Wareegga hoos u dhigista Superheterodyne wuxuu la mid yahay raadiyaha superheterodyne. Waxay ku qalabaysan tahay wareegga oscillation maxalli ah si loo dhaliyo calaamadda oscillation. Ka dib marka la isku daro calaamadaha soo noqnoqda sidaha helay, soo noqnoqda dhexdhexaadka ah (guud ahaan 465kHZ) ayaa la helayaa. Ka dib kordhinta soo noqnoqoshada dhexdhexaadka ah iyo ogaanshaha, calaamada xogta waa la dhimay. Sababtoo ah inta jeer ee qaaduhu wuu go'an yahay, wareeggiisu wuu ka fudud yahay kan raadiyaha. Qaadaha superheterodyne wuxuu leeyahay faa'iidooyinka xasilloonida, dareenka sare iyo awoodda ka-hortagga faragelinta; Qaadaha dib-u-cusboonaynta sare waa mid yar oo jaban. Way fududahay in la xalliyo.
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