Oge: 2021-11-10
A ihe nzacha ngafe bandọrụ:
Ihe nzacha zuru oke kwesịrị inwe pasband dị larịị kpamkpam, dịka ọmụmaatụ, enweghị uru na pasband ma ọ bụ mbelata na ugboro ole niile dị n'èzí pasband na-ebelata kpamkpam. Na mgbakwunye, mgbanwe nke pasband na obere oke ugboro ole iji mezue. N'ezie, enweghị nzacha band-pass kacha mma. Ihe nzacha ahụ enweghị ike ịtụ anya na ugboro ole niile dị n'èzí oke ugboro ole na ole na-ebelata kpamkpam, ọkachasị, enwere band a ga-ebelata mana ọ bụghị oke iche. A na-akpọkarị nke a ihe nzacha ahụ na-agbanwe agbanwe, na mbelata na dB kwa afọ iri iji nọchite anya ya. Dịka ọ na-adịkarị, nhazi nzacha ahụ na-agbalị ijide n'aka na rolloff na-ebelata oke arụmọrụ ka mma nke imewe nzacha dị otú ahụ nso. Agbanyeghị, ka oke roll-off na-adị obere ma na-ebelata, pasband-pass adịghịzi larịị - malitere iyi ka ọ "na-agbagharị". Ihe a pụtara ìhè karịsịa na nsọtụ pasband, a na-akpọ mmetụta a ihe Gibbs.
Ihe nzacha oghere bụ ihe nzacha microwave nwere nhazi oghere resonant. Oghere nwere ike ịdị ka inductance n'otu oge ya na capacitor iji mepụta ọkwa resonant iji mezuo ọrụ nzacha microwave. Ma e jiri ya tụnyere ụdị nzacha microwave ndị ọzọ, ihe nzacha oghere nwere nhazi siri ike, arụmọrụ kwụsiri ike ma bụrụ nke a pụrụ ịtụkwasị obi, uru Q dị elu, mwepu okpomọkụ dị mma, yana passband parasitic dị elu dị anya. Ya mere, a na-eji nzacha oghere na ọdụ nkwukọrịta dị mkpa. A na-ejikarị ngwa a eme ihe.
Ngwa ...
Anyị nwekwara ike hazie ihe ndị dị na rf passive dịka ihe ị chọrọ si dị. Ị nwere ike itinye ibe nhazi iji nye nkọwapụta ịchọrọ.
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Oge ozi: Nọvemba-18-2021
