Umahluko phakathi kwe-RF isolators kunye ne-RF circulators

Kwizicelo ezisebenzayo, ii-RF isolators kunye nee-RF circulators zihlala zikhankanywa ngaxeshanye.
Yintoni ubudlelwane phakathi kwe-RF isolators kunye ne-RF circulators? Yintoni umahluko?
Eli nqaku liza kugxila ekuxoxeni ngale miba.
I-radio frequency isolator, eyaziwa ngokuba sisixhobo esibhekisa kwicala elinye, sisixhobo esithumela amaza e-electromagnetic kwicala elinye. Xa amaza e-electromagnetic esasazeka kwicala eliya phambili, anokondla wonke amandla kumthwalo kwaye abangele ukuncitshiswa okukhulu kwamaza abonakalisiweyo kumthwalo. Olu phawu lokudlulisela olubhekisa kwicala elinye lungasetyenziselwa ukwahlula impembelelo yotshintsho lomthwalo kumthombo wesignali.
Ii-RF circulators ziinkqubo zothumelo lwamasebe ezineempawu ezingatshintshiyo. Ii-ferrite RF circulators ezisetyenziswa kakhulu zii-Y-shaped junction RF circulators, ezenziwe ziintambo ezintathu zamasebe ezisasazwe ngokulinganayo kwi-engile ye-120 ° enye kwenye.

1,Yintoni i-RF isolator?
I-radio frequency isolator, eyaziwa ngokuba sisixhobo esibhekisa kwicala elinye, sisixhobo esithumela amaza e-electromagnetic kwicala elinye. Xa amaza e-electromagnetic esasazeka kwicala eliya phambili, anokondla wonke amandla kumthwalo kwaye abangele ukuncitshiswa okukhulu kwamaza abonakalisiweyo kumthwalo. Olu phawu lokudlulisela olubhekisa kwicala elinye lungasetyenziselwa ukwahlula impembelelo yotshintsho lomthwalo kumthombo wesignali. Ukuthatha i-field moving isolator njengomzekelo, cacisa ngakumbi umgaqo wokusebenza we-ferrite RF isolator.

Ii-field shift zokwahlulahlula zenziwe ngokusekelwe kwiziphumo ezahlukeneyo ze-field shift ze-ferrite kwiindlela zamaza ezidluliselwa kwiindlela ezimbini. Yongeza iipleyiti zokunciphisa amandla kwicala leshidi le-ferrite, kwaye ngenxa yokuphambuka okuhlukeneyo kwamasimi aveliswa ziindlela ezimbini zokudlulisela, intsimi yombane yamaza adluliselwe kwicala elingaphambili (- z direction) ithambekele kwicala ngaphandle kweepleyiti zokunciphisa amandla, ngelixa intsimi yombane yamaza adluliselwe kwicala elingasemva (+ z direction) ithambekele kwicala leepleyiti zokunciphisa amandla, ngaloo ndlela kufezekiswa umsebenzi wokuzihlukanisa we-small forward attenuation kunye ne-reverse attenuation enkulu, njengoko kubonisiwe kuMfanekiso.2.

2,Yintoni ii-RF circulators?
Ii-RF circulators ziinkqubo zothumelo lwamasebe ezineempawu ezingatshintshiyo. Ii-ferrite RF circulators ezisetyenziswa kakhulu zii-RF circulators ezimile okwe-Y, njengoko kubonisiwe kuMfanekiso 3 (a), ezenziwe ziimigca ezintathu zamasebe ezisasazwe ngokulinganayo kwi-engile ye-120 ° enye kwenye. Xa intsimi yamagnetic yangaphandle ingu-zero, i-ferrite ayinamagneti, ngoko ke imagnethi kuzo zonke iindlela iyafana. Xa isignali ifakwa kumgca wesebe "①", intsimi yamagnetic njengoko kubonisiwe kuMfanekiso 3 (b) iya kuchulumanciswa kwindawo yokuhlangana kwe-ferrite. Ngenxa yeemeko ezifanayo zamasebe "②, ③", isignali ikhutshwa kwiindawo ezilinganayo. Xa kusetyenziswa intsimi yamagnetic efanelekileyo, i-ferrite iyachulumanciswa, kwaye ngenxa yesiphumo se-anisotropy, intsimi yamagnetic njengoko kubonisiwe kuMfanekiso 3 (c) iyachulumanciswa kwindawo yokuhlangana kwe-ferrite. Xa kusetyenziswa i-magnetic field efanelekileyo, i-ferrite ifakwa i-magnetized, kwaye ngenxa yesiphumo se-anisotropy, kukho i-signal output kwi-branch "②", ngelixa i-electric field kwi-branch "③" ingu-zero kwaye akukho signal output. Xa kwakhona i-input evela kwi-branch "②", i-branch "③" ine-output, ngelixa i-branch "①" ingena-output; Xa i-input evela kwi-branch "③", i-branch "①" ine-output ngelixa i-branch "②" ingena-output. Kuyabonakala ukuba yenza ukujikeleza oku-unidirectional kwe-"①" → "②" → "③" → "①", kwaye icala elingasemva aliqhagamshelwanga, ngoko ke ibizwa ngokuba yi-RF circulator.