Iindaba

Ixesha: 2021-11-10

A isihluzi sebhendiimisebenzi:

Isihluzo esifanelekileyo kufuneka sibe ne-passband ethe tyaba ngokupheleleyo, umzekelo, akukho kunyuka kwi-passband okanye ukuncitshiswa kuzo zonke ii-frequencies ngaphandle kwe-passband kuyancitshiswa ngokupheleleyo. Ukongeza, ukuguqulwa kwe-pass-band kuluhlu oluncinci kakhulu lwe-frequency ukuba lugqitywe. Enyanisweni, akukho filter ye-band-pass efanelekileyo. Isihluzo asinakulindela ukuba zonke ii-frequencies ezingaphandle koluhlu lwe-frequency zincitshiswe ngokupheleleyo, ngakumbi, kukho i-band ekufuneka incitshiswe kodwa ingahlukaniswanga. Oku kudla ngokubizwa ngokuba yi-filter roll-off phenomenon, kwaye ukuncitshiswa kwi-dB ngeshumi leminyaka kuyamela. Ngokwesiqhelo, uyilo lwe-filter luzama ukuqinisekisa ukuba i-rolloff inciphisa umda wokusebenza ngcono koyilo lwe-filter olunjalo. Nangona kunjalo, njengoko uluhlu lwe-roll-off lusiba ncinci kwaye luncinci, i-pass-band ayisathe tyaba - yaqala ukubonakala ngathi "iyaqhekeka". Le meko ibonakala ngakumbi kumda we-passband, esi siphumo sibizwa ngokuba yi-Gibbs phenomenon.

Isihluzi somngxuma

Isihluzi se-cavity sisihluzi se-microwave esinesakhiwo se-resonant cavity. I-cavity ingalingana ne-inductance ehambelana ne-capacitor ukwenza inqanaba le-resonant ukuze kufezekiswe umsebenzi wokucoca i-microwave. Xa kuthelekiswa nezinye iintlobo zezihluzi ze-microwave, isihluzi se-cavity sinesakhiwo esiqinileyo, ukusebenza okuzinzileyo nokuthembekileyo, ixabiso eliphezulu le-Q, ukusasazwa kobushushu okuhle, kwaye i-passband yayo ye-parasitic ephezulu ikude kakhulu. Ke ngoko, isihluzi se-cavity sisetyenziswa kwizikhululo ezinkulu zonxibelelwano. Ukusetyenziswa kwesi sixhobo kuxhaphake kakhulu.

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Singakwazi nokwenza ngokwezifiso iinxalenye ze-rf passive ngokweemfuno zakho. Ungangena kwiphepha lokwenza ngokwezifiso ukuze unikeze iinkcukacha ozifunayo.
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