Chaza kafushane amapharamitha wokusebenza we-RF isolator

Ezinhlelweni ze-RF, umsebenzi oyinhloko weI-RF isolatorsukuhlinzeka noma ukuthuthukisa amandla okuzihlukanisa emizila yesignali ehlukene. Kuyi-circulator ethuthukisiwe enqanyulwa ngokuphazamiseka okufanayo kwelinye lamachweba ayo. Ivamise ukusetshenziswa ezinhlelweni ze-radar ukuze kuvikelwe amasekhethi azwelayo endaweni yokwamukela ukuze kugwenywe ukuphazamiseka okuvela kumasignali adluliswayo wamandla aphezulu, ngaleyo ndlela kuzuzwe ukuhlukaniswa okusebenzayo kwamasignali adlulisiwe nawamukelwe. Lesi sihloko sizokuthatha ukuthi uqonde amapharamitha okusebenza abalulekile weI-RF isolators.

一. Incazelo
I-RF isolatorsziwuhlobo olukhethekile lweAma-circulator e-RF, lapho imbobo eyodwa (imvamisa isiphetho sendlela ehlehlayo yochungechunge lwesignali) inqanyulwa ngomthwalo ofanayo ukuze kuzuzwe ukudluliswa kwamasignali ngendlela engaqondile. Ivumela kuphela amasiginali ukuthi adlule ngendlela enqunywe kusengaphambili ngenkathi icindezela ukubonisa, umsindo noma amasiginali okuphazamisayo asuka esiqondisweni esibuyela emuva, ngaleyo ndlela kuzuzwe ukuhlukaniswa okusebenzayo kwesixhumanisi sangaphambilini.

I-RF isolators or ama-circulatorsngokuvamile amadivaysi e-ferrite angenzi lutho aqondisa amagagasi kazibuthe kagesi asuka ekugcineni okokufaka aye ohlangothini oluthile ngokulungiselelwa kwenkambu kazibuthe ethize kanye nokuphumayo esikhaleni esiseduze.

Uma kuqhathaniswa nezihlukanisi ezilungiswe kusukela kwejwayelekileAma-circulator e-RF, amadivayisi aklanyelwe ngokukhethekile izinjongo zokuzihlukanisa ngokuvamile aminyene kakhulu futhi kulula ukuwahlanganisa. Ukusebenza kwayo yodwa kuthintwa ngokuqondile izinga lokumatanisa kwetheminali.

Isihlukanisi esijwayelekile semvamisa ephezulu, Isolation (12-14dB), 18 kuya ku-40GHz

二. Amapharamitha wokusebenza
Izinkomba zokusebenza ezibalulekile zeI-RF isolatorszihlanganisa:

Ibanga lefrikhwensi (Hz)

Ukuphazamiseka (Ω)

Ukulahlekelwa kokufakwa (dB)

Ukuhlukaniswa (dB)

I-Voltage Stand Wave ratio (VSWR)

Amandla okuphatha amandla phambili (igagasi eliqhubekayo noma ukuphakama)

Amandla okuphatha ahlehlayo (igagasi eliqhubekayo noma ukuphakama)

Uhlobo lwesixhumi

Phakathi kwazo, ukuzihlukanisa kungenye yemingcele ebaluleke kakhulu, ekhombisa izinga lokuhlangana phakathi kwezindlela ze-RF kuma-decibel (dB). Lapho inani liphakeme, kuncane ukuhlangana phakathi kwamasignali futhi kuba ngcono umphumela wokuzihlukanisa. Njengoba ukuhlangana kwe-electromagnetic kuvame kuzo zonke izindlela ezisebenzayo, kubaluleke kakhulu ukugcina ukuhlukaniswa okuphezulu phakathi kwezindlela zokuxhumana ezinembayo noma izinhlelo zokuzwa.

Ngaphezu kwalokho, ngokwezidingo ezahlukene zohlelo lokusebenza,izihlukanisakufanele futhi ibe namandla okuphatha amandla afanelekile, i-VSWR ephansi, isakhiwo sesixhumi esinokwethenjelwa okuphezulu, usayizi ofanele, kanye nebanga lokushisa eliguquguqukayo lokusebenza, elingase lithinte ukusebenza kwazo ezimeni zangempela. Inkomba enkulu yamandla yesihlukanisi ingase futhi ikhawulelwe izici zomthwalo onqanyuliwe.