Iyini i-RF attenuator?

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. Ububanzi nokwakheka:

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.