Izihluzi zefrikhwensi yebhendi ephezulu zizixhobo zombane eziyilelwe ukuvumela kuphela uluhlu oluthile lweempawu zefrikhwensi ephezulu ukuba zidlule ngelixa unciphisa imiqondiso kumaza angaphandle kolo luhlu. Ezi zihluzo ziqhele ukusetyenziswa kwiisistim zonxibelelwano, izixhobo ze-audio, kunye nezinye iinkqubo zombane ezifuna impendulo echanekileyo yamaza. Kwesi sincoko, siza kuphonononga ezona mpawu ziphambili zeefilitha zebhendi yokupasa ephezulu, kubandakanya impendulo yazo rhoqo, i-bandwidth, kunye ne-Q-factor.
Impendulo yamaxesha ngamaxesha: Ukuphendula rhoqo kwesihluzi sokugqitha kwibhendi ephezulu simisela ukuba sithomalalisa njani na iisiginali ngaphandle kwebhendi yokugqitha kunye nokuba ikhulisa kangakanani imiqondiso phakathi kwebhendi yokugqitha. Isihluzi esenziwe kakuhle se-high frequency band pass siya kuba notshintsho olubukhali phakathi kwe-passband kunye ne-stopband, kunye ne-ripple encinci kwi-passband. Ubume begophe lempendulo yefrikhwensi imiselwa kuyilo lwesihluzi, kwaye inokubonakaliswa ngamaza alo aseziko kunye nobubanzi bayo.
I-Bandwidth: I-bandwidth ye-high frequency band pass filters luluhlu lwee-frequencies ezivumelekileyo ukuba zidlule kwisihluzo kunye nokuthotyelwa okuncinci. Ichazwa ngokuqhelekileyo njengomahluko phakathi kwaphezulu nasezantsi -3 dB frequencies, ezizii-frequencies apho amandla emveliso yesihluzi ancitshiswa ngama-50% xa kuthelekiswa nowona mandla aphezulu kwi-passband. I-bandwidth ye-high frequency band pass filter iyipharamitha ebalulekileyo emisela ukukhetha kwayo kunye nendlela enokuyigatya ngayo imiqondiso engafunekiyo ngaphandle kwe-passband.
I-Q-Factor: I-Q-factor ye-high frequency band pass filters ngumlinganiselo wokukhethwa kwayo okanye ubukhali bempendulo yokucoca rhoqo. Ichazwa njengomlinganiselo we-frequency center ukuya kwi-bandwidth. I-Q-factor ephezulu ihambelana ne-bandwidth encinci kunye ne-require frequency response, ngelixa i-Q-factor ephantsi ihambelana ne-bandwidth ebanzi kunye nokuphendula ngokuthe ngcembe. I-Q-factor ye-high frequency band pass filter iyipharamitha ebalulekileyo emisela ukusebenza kwayo ekwaleni iimpawu ezingafunekiyo ngaphandle kwe-passband.
Ilahleko yokuFaka: Ilahleko yokufaka isihluzi sokugqitha kwibhendi ephezulu sisixa sokuthomalalisa umqondiso okwenzeka xa umqondiso udlula kwisihluzi. Idla ngokubonakaliswa ngee-decibels kwaye ngumlinganiselo wokuba isihluzi sithomalalisa kangakanani na imiqondiso kwi-passband. Isihluzi esenziwe kakuhle sebhendi yokupasa ephezulu kufuneka sibe nelahleko encinci yokufaka kwibhendi yokugqitha ukunqanda ukuthoba umgangatho wophawu.
I-Impedance Matching: Ukuhambelana kwe-Impedance yinto ebalulekileyo yokucoca i-band frequency high frequency filters, ngakumbi kwiinkqubo zonxibelelwano. Igalelo kunye nemveliso ye-impedance yesihluzi kufuneka ihambelane nomthombo kunye ne-impedance yomthwalo ukunciphisa ukubonakalisa umqondiso kunye nokwandisa ukudluliselwa kwesignali. Isihluzi esihambelana kakuhle nebhendi yokupasa ephezulu siya kuba nelahleko encinci kunye nokuphazamiseka.
Ukuqukumbela, izihluzi ze-high frequency band pass zizinto ezibalulekileyo kwiisekethe zombane ezifuna impendulo echanekileyo. Iimpawu zabo eziphambili zibandakanya ukuphendula kwabo rhoqo, i-bandwidth, i-Q-factor, ilahleko yokufaka, kunye nokulinganisa i-impedance. Isihluzi esenziwe kakuhle se-high frequency band pass kufuneka sibe nempendulo ebukhali, i-bandwidth emxinwa, ilahleko encinci yokufaka, kunye nokuhambelana kwe-impedance ukuqinisekisa ukusebenza kakuhle.
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Ixesha lokuposa: May-10-2023
