Chaza kafushane amapharamitha okusebenza kwama-RF isolators

Ezinhlelweni ze-RF, umsebenzi oyinhloko weIzihlukanisi ze-RFukuhlinzeka noma ukuthuthukisa amakhono okuhlukaniswa kwezindlela ezahlukene zesignali. Kuyi-circulator ethuthukisiwe eqedwa ngokufanisa i-impedance kwelinye lamachweba ayo. Ngokuvamile isetshenziswa ezinhlelweni ze-radar ukuvikela amasekethe abucayi ekugcineni kokwamukela ukuze kugwenywe ukuphazamiseka kwezibonakaliso ezidluliselwa ngamandla aphezulu, ngaleyo ndlela kufezwe ukuhlukaniswa okuphumelelayo kwezibonakaliso ezidluliselweyo nezamukelwe. Lesi sihloko sizokuqondisa ekuqondeni amapharamitha okusebenza ayinhloko weIzihlukanisi ze-RF.

一. Incazelo
Izihlukanisi ze-RFempeleni ziyindlela ekhethekileAma-circulator e-RF, lapho imbobo eyodwa (ngokuvamile ukuphela kwendlela ebuyela emuva kochungechunge lwesignali) iqedwa umthwalo ohambisanayo ukuze kufezwe ukudluliselwa kwesignali ngendlela eyodwa. Ivumela kuphela amasignali ukuthi adlule ngendlela enqunyiwe ngenkathi kucindezela ukubonakaliswa, umsindo noma izimpawu zokuphazamiseka kusuka endleleni ebuyela emuva, ngaleyo ndlela kufezwe ukuhlukaniswa okuphumelelayo kwesixhumanisi sangaphambilini.

Izihlukanisi ze-RF or ama-circulatorngokuvamile amadivayisi e-ferrite angasebenzi aqondisa amaza kagesi kusukela ekugcineni kokufaka endaweni ethile ngokusebenzisa ukucushwa kwensimu yamagnetic ethile kanye nokukhipha echwebeni eliseduze.

Uma kuqhathaniswa nama-isolators aguqulwe kusukela kwejwayelekileAma-circulator e-RF, amadivayisi aklanyelwe ngqo izinjongo zokuhlukanisa ngokuvamile alula kakhulu futhi kulula ukuwahlanganisa. Ukusebenza kwawo kokuhlukanisa kuthintwa ngqo yikhwalithi yokufanisa i-terminal.

I-isolator ejwayelekile yemvamisa ephezulu, I-Isolation (12-14dB), 18 kuya ku-40GHz

二. Amapharamitha okusebenza
Izinkomba zokusebenza ezibalulekile zeIzihlukanisi ze-RFfaka:

Ibanga lemvamisa (Hz)

Impedance (Ω)

Ukulahlekelwa kokufakwa (dB)

Ukuhlukaniswa (dB)

Isilinganiso samagagasi okuma kwe-voltage (VSWR)

Amandla okuphatha amandla okudlulisela phambili (igagasi eliqhubekayo noma isiqongo)

Amandla okuphatha amandla abuyela emuva (igagasi eliqhubekayo noma isiqongo)

Uhlobo lwesixhumi

Phakathi kwazo, ukuhlukaniswa kungenye yezindlela ezibaluleke kakhulu, okubonisa izinga lokuhlangana phakathi kwezindlela ze-RF kuma-decibel (dB). Uma inani liphakeme, kulapho ukuhlangana phakathi kwezibonakaliso kuncane khona futhi umphumela wokuhlukaniswa uba ngcono. Njengoba ukuhlangana kwe-electromagnetic kuvame kuzo zonke izindlela zokuqhuba, kubaluleke kakhulu ukugcina ukuhlukaniswa okuphezulu phakathi kwezindlela ezinhlelweni zokuxhumana noma zokuzwa ezinembile kakhulu.

Ngaphezu kwalokho, ngokuya ngezidingo ezahlukene zesicelo,izihlukanisikumele futhi ibe nomthamo ofanele wokuphatha amandla, i-VSWR ephansi, isakhiwo sesixhumi esinokwethenjelwa okuphezulu, usayizi ofanele, kanye nobubanzi bokushisa bokusebenza obuvumelana nezimo, okungathinta ukusebenza kwazo ezimweni zangempela. Inkomba yamandla ephezulu yesihlukanisi ingancishiswa futhi yizici zomthwalo oqediwe.