I-Attenuator iyingxenye ye-elekthronikhi esetshenziswa kakhulu ezintweni zikagesi, futhi umsebenzi wayo oyinhloko ukuhlinzeka ngokunciphisa. Kuyinto edla amandla, ephenduka ibe ukushisa ngemva kokusetshenziswa kwamandla. Izinjongo zayo eziyinhloko yilezi: (1) Lungisa ubukhulu besignali kumjikelezo; (2) Endleleni yokulinganisa indlela yokuqhathanisa, ingasetshenziswa ukufunda ngokuqondile inani lokunciphisa lenethiwekhi ehloliwe; (3) Thuthukisa ukufaniswa kwe-impedance, uma ezinye izifunda zidinga Lapho kusetshenziswa i-impedance yomthwalo ozinzile, i-attenuator ingafakwa phakathi kwesekethe kanye ne-impedance yangempela yokulayisha ukuze kuvimbele ushintsho lwe-impedance. Ngakho-ke lapho usebenzisa i-attenuator, yiziphi izindaba ezidinga ukunakwa?
Ake sikwethule ngokuningiliziwe ngezansi:
1. Impendulo yefrikhwensi: i-bandwidth yefrikhwensi, ngokuvamile evezwa nge-megahertz (MHz) noma i-gigahertz (GHz). Izinqamuleli zenhloso evamile ngokuvamile zine-bandwidth engaba ngu-5 GHz, enomkhawulokudonsa omkhulu ongu-50 GHz.
2. Ibanga lokunciphisa kanye nesakhiwo:
Ibanga lokunciphisa libhekisela esilinganisweni sokunciphisa, ngokuvamile esisukela ku-3dB, 10dB, 14dB, 20dB, kufika ku-110dB. Ifomula yokunciphisa ithi: 10lg (okufakwayo/okuphumayo), isibonelo: ukwakheka kwezinhlamvu ezingu-10dB: okokufaka: okuphumayo = ukunqanda okuningi = izikhathi ezingu-10. Isakhiwo ngokuvamile sihlukaniswa sibe izinhlobo ezimbili: i-attenuator elinganayo engaguquki kanye nesinyathelo sokulinganisa esilungisekayo. I-attenuator engaguquki isho i-attenuator enesilinganiso esinqunyiwe esiphindaphindwayo kububanzi obuthile bokuvama. I-Step attenuator iyisifinyezo esinenani elithile elingaguquki kanye nesilinganiso esishintshayo sesikhawu esilinganayo. Ihlukaniswe yaba i-attenuator yesinyathelo esenziwe ngesandla kanye nesinqamuleli esihlelekayo.
3. Ifomu lekhanda lokuxhuma nosayizi wokuxhuma:
Uhlobo lwesixhumi luhlukaniswe ngohlobo lwe-BNC, uhlobo lwe-N, uhlobo lwe-TNC, uhlobo lwe-SMA, uhlobo lwe-SMC, njll. Ngesikhathi esifanayo, umumo wokuxhuma unezinhlobo ezimbili: owesilisa nowesifazane.
Usayizi wokuxhuma uhlukaniswe ngezinhlelo zemethrikhi nezasebukhosini, futhi okungenhla kunqunywa ngokuya ngezidingo zokusetshenziswa; uma izinhlobo zezixhumi zidinga ukuxhunywa, ama-adaptha okuxhumana ahambisanayo angahlonyiswa, isibonelo: i-BNC kuya ku-N-type connector, njll.
4. Inkomba ye-Attenuation:
Izinkomba zokuthibaza zinezidingo eziningi, ikakhulukazi izici ezilandelayo: ukunemba kokunciphisa, ukumelana namandla, ukungasebenzi kahle kwesici, ukwethembeka, ukuphindaphinda, njll.
Njengomqambi weama-attenuators, i-Jingxin ingakusekela ngezinhlobo ezahlukene zezibambisi ngokuya ngesixazululo sakho se-RF.
Isikhathi sokuthumela: Dec-20-2021
