Umehluko phakathi kwama-RF isolators nama-RF circulators

Ezisetshenzisweni ezisebenzayo, ama-RF isolators nama-RF circulators avame ukukhulunywa ngawo ngesikhathi esisodwa.
Buyini ubudlelwano phakathi kwama-RF isolators nama-RF circulators? Uyini umehluko?
Lesi sihloko sizogxila ekuxoxeni ngalezi zinkinga.
I-radio frequency isolator, eyaziwa nangokuthi idivayisi eqondisa unidirectional, iyidivayisi edlulisela amaza kagesi ohlangothini olulodwa. Lapho amaza kagesi esakazeka ohlangothini oluya phambili, anganika wonke amandla kumthwalo futhi abangele ukuncishiswa okukhulu kwamaza abonakalayo avela kumthwalo. Lesi sici sokudlulisa unidirectional singasetshenziswa ukuhlukanisa umthelela wokushintsha komthwalo emthonjeni wesignali.
Ama-circulator e-RF ayizinhlelo zokudlulisa amagatsha ezinezimpawu ezingezona ezihambisanayo. Ama-circulator e-ferrite RF asetshenziswa kakhulu angama-circulator e-junction RF anomumo ongu-Y, akhiwe yimigqa emithathu yamagatsha esakazwa ngokulinganayo nge-engeli engu-120 ° komunye nomunye.

1,Kuyini i-RF isolator?
I-radio frequency isolator, eyaziwa nangokuthi idivayisi eqondisa unidirectional, iyidivayisi edlulisela amaza kagesi ohlangothini olulodwa. Lapho amaza kagesi esakazeka ohlangothini oluya phambili, anganika wonke amandla kumthwalo futhi abangele ukuncishiswa okukhulu kwamaza abonakalayo avela kumthwalo. Lesi sici sokudlulisa unidirectional singasetshenziswa ukuhlukanisa umthelela wokushintsha komthwalo emthonjeni wesignali. Uma sithatha i-field moving isolator njengesibonelo, chaza kabanzi isimiso sokusebenza se-ferrite RF isolator.

Ama-field shift isolators enziwa ngokusekelwe emiphumeleni ehlukene ye-field shift ye-ferrite kumamodi wamagagasi adluliselwa ngezindlela ezimbili. Anezela amapuleti okunciphisa amandla ohlangothini lweshidi le-ferrite, futhi ngenxa yokuphambuka okuhlukile kwamasimu akhiqizwa yizindlela ezimbili zokudlulisela, insimu kagesi yegagasi elidluliselwa ohlangothini oluya phambili (- z direction) ithambekele ohlangothini olungenamapuleti okunciphisa amandla, kuyilapho insimu kagesi yegagasi elidluliselwe ohlangothini oluya emuva (+ z direction) ithambekele ohlangothini lwamapuleti okunciphisa amandla, ngaleyo ndlela kufezwa umsebenzi wokuhlukaniswa kwe-small forward attenuation kanye ne-large reverse attenuation, njengoba kuboniswe kuMfanekiso.2.

2,Iyini i-RF circulators?
Ama-circulator e-RF ayizinhlelo zokudlulisa amagatsha ezinezimpawu ezingezona ezihambisanayo. Ama-circulator e-RF e-ferrite asetshenziswa kakhulu angama-circulator e-RF anomumo we-Y, njengoba kuboniswe kuMfanekiso 3 (a), akhiwe yimigqa emithathu yamagatsha esakazwa ngokulinganayo nge-engeli engu-120 ° komunye nomunye. Lapho insimu yamagnetic yangaphandle ingu-zero, i-ferrite ayinama-magnetism, ngakho-ke i-magnetism kuzo zonke izinhlangothi iyafana. Lapho isignali ifakwa kusuka kumugqa wegatsha "①", insimu yamagnetic njengoba kuboniswe kuMfanekiso 3 (b) izovuselelwa ekuxhumaneni kwe-ferrite. Ngenxa yezimo ezifanayo zamagatsha "②, ③", isignali ikhishwa ngezingxenye ezilinganayo. Lapho kusetshenziswa insimu yamagnetic efanelekile, i-ferrite ivuselelwa, futhi ngenxa yomphumela we-anisotropy, insimu ye-electromagnetic njengoba kuboniswe kuMfanekiso 3 (c) ivuselelwa ekuxhumaneni kwe-ferrite. Uma kusetshenziswa insimu yamagnetic efanele, i-ferrite ifakwa amandla kagesi, futhi ngenxa yomphumela we-anisotropy, kukhona ukuphuma kwesignali egatsheni "②", kuyilapho insimu kagesi egatsheni "③" ingu-zero futhi akukho ukuphuma kwesignali. Uma futhi okufakwayo okuvela egatsheni "②", igatsha "③" linokukhishwa, kuyilapho igatsha "①" lingenakho ukuphuma; Uma okufakwayo okuvela egatsheni "③", igatsha "①" linokukhishwa kanti igatsha "②" lingenakho ukuphuma. Kungabonakala ukuthi yakha ukujikeleza okuqondile kwe-"①" → "②" → "③" → "①", futhi isiqondiso esiphambeneyo asixhunyiwe, ngakho-ke sibizwa ngokuthi i-RF circulator.