Chaza ngokufutshane iiparameter zokusebenza kwee-RF isolators

Kwiinkqubo zeRF, umsebenzi ophambili weIzihlukanisi zeRFkukubonelela okanye ukuphucula amandla okuzahlula kwiindlela ezahlukeneyo zesignali. Yi-circulator ephuculweyo epheliswa yi-impedance ehambelanayo kwenye yeezibuko zayo. Ihlala isetyenziswa kwiinkqubo ze-radar ukukhusela iisekethe ezibuthathaka kwicala lokwamkela ukuze kuthintelwe ukuphazamiseka kwizibonakaliso ezithunyelwa ngamandla aphezulu, ngaloo ndlela kufezekiswa ukwahlulwa okusebenzayo kwezibonakaliso ezithunyelweyo nezamkelweyo. Eli nqaku liza kukusa ekuqondeni iiparameter zokusebenza eziphambili zeIzihlukanisi zeRF.

一. Ingcaciso
Izihlukanisi zeRFngokusisiseko luhlobo olukhethekileyo lweIisekethe zeRF, apho izibuko elinye (ngokuqhelekileyo isiphelo sendlela ebuyela umva sekhonkco lesignali) lipheliswa ngumthwalo ohambelanayo ukuze kufezekiswe ukuhanjiswa kwesignali kwicala elinye. Ivumela kuphela imiqondiso ukuba idlule kwicala elimiselweyo ngelixa icinezela ukubonakaliswa, ingxolo okanye imiqondiso yokuphazamiseka ukusuka kwicala elingasemva, ngaloo ndlela ifezekisa ukwahlulwa okusebenzayo kwekhonkco langaphambili.

Izihlukanisi zeRF or ii-circulatorszidla ngokuba zizixhobo ze-ferrite ezingasebenziyo ezikhokela amaza e-electromagnetic ukusuka kwisiphelo sokufaka kwicala elithile ngokusebenzisa uqwalaselo oluthile lwentsimi yamagnetic kunye nesiphumo kwizibuko elikufutshane.

Xa kuthelekiswa nee-isolators eziguqulwe ukusuka kwi-conventionalIisekethe zeRF, izixhobo ezenzelwe ngokukodwa iinjongo zokwahlukanisa zihlala zincinci kwaye kulula ukuzidibanisa. Ukusebenza kwazo zokwahlukanisa kuchaphazeleka ngokuthe ngqo ngumgangatho wokufaniswa kwesiphelo.

I-isolator esemgangathweni ophezulu, Isolation (12-14dB), 18 ukuya kwi-40GHz

二. Iiparameter zokusebenza
Izalathisi zokusebenza eziphambili zeIzihlukanisi zeRFziquka:

Uluhlu lweefrikhwensi (Hz)

Impedance (Ω)

Ukulahleka kokufakwa (dB)

Ukuzahlula (dB)

Umlinganiselo wamaza okuma kweVoltage (VSWR)

Amandla okuphatha amandla phambili (i-wave eqhubekayo okanye i-peak)

Ubuchule bokuphatha amandla ngokubuyela umva (i-wave eqhubekayo okanye i-peak)

Uhlobo lwesixhumi

Phakathi kwazo, ukwahlulwahlulwa yenye yezona parameter zibalulekileyo, ezibonisa inqanaba lokudibana phakathi kweendlela zeRF kwiidesibel (dB). Okukhona ixabiso liphezulu, kokukhona ukudibana phakathi kwemiqondiso kuncinci kwaye kokukhona isiphumo sokwahlulwahlulwa singcono. Ekubeni ukudibana kwe-electromagnetic kuxhaphakile kuzo zonke iindlela zokuqhuba, kubaluleke kakhulu ukugcina ukwahlulwahlulwa okuphezulu phakathi kweendlela kwiinkqubo zonxibelelwano oluchanekileyo okanye zokuvavanya.

Ukongeza, ngokweemfuno ezahlukeneyo zesicelo,izihlukanisikufuneka zibe nomthamo ofanelekileyo wokuphatha amandla, i-VSWR ephantsi, isakhiwo sesixhumi esithembekileyo kakhulu, ubungakanani obufanelekileyo, kunye nomgangatho wobushushu bokusebenza oguquguqukayo, oku kunokuchaphazela ukusebenza kwazo kwiimeko zokwenyani. Isalathisi samandla esiphezulu se-isolator sinokuthintelwa ziimpawu zomthwalo ophelisiweyo.