I-couplers ye-Directional luhlobo olubalulekileyo lwesixhobo sokwenza umqondiso. Umsebenzi wabo osisiseko kukwenza isampulu yemiqondiso ye-RF kwinqanaba elimiselweyo lokudityaniswa, kunye nokwahluka okuphezulu phakathi kwamazibuko emiqondiso kunye namazibuko angumzekelo - oxhasa uhlalutyo, umlinganiselo kunye nokusetyenzwa kwezicelo ezininzi. Kuba zizixhobo ezisetyenziswayo, zikwasebenza kwicala elingasemva, kunye nemiqondiso efakwe kwindlela ephambili ngokwesikhokelo sesixhobo kunye nenqanaba lokudibanisa. Kukho iiyantlukwano ezimbalwa kuqwalaselo lwee-couplers ezikhokelayo, njengoko siza kubona ngezantsi.
Iingcaciso
Ngokufanelekileyo, i-coupler ayinakulahlekelwa, ifaniswe kwaye ibuyelelana. Iimpawu ezisisiseko zothungelwano lwamachweba amathathu kunye nezine zihlukanisiwe, ukudibanisa kunye nokuqondisa, amaxabiso asetyenziselwa ukuphawula abalingani. I-coupler efanelekileyo ine-directivity engapheliyo kunye nokwahlukaniswa, kunye nento yokudibanisa ekhethiweyo kwisicelo esicetywayo.
Umzobo osebenzayo kwi-Fig. 1 ubonisa ukusebenza kwe-coupler ye-directional, elandelwa yinkcazo yeeparitha zokusebenza ezihambelanayo. Umzobo ophezulu yi-4-port coupler, ebandakanya zombini idityanisiwe (phambili) kunye neyodwa (emvayo, okanye ebonakalisiweyo) izibuko. Umzobo ongezantsi uyisakhiwo se-3-port, esiphelisa i-port eyedwa. Oku kusetyenziswa kwizicelo ezifuna kuphela imveliso enye eya phambili edityanisiweyo. I-coupler ye-3-port inokudityaniswa kwicala elingasemva, apho izibuko elalifudula lidityanisiwe liba lizibuko elikwanti:
Umzobo 1: Isisekoi-coupler eyalathisayoulungelelwaniso
Iimpawu zokusebenza:
NONE
Directivity: Lo ngumlinganiselo wokukwazi kwe-coupler ukwahlula amaza asasaza ukuya phambili nasemva, njengoko kubonwa kwidibaniso (P3) kunye nekwadwa (P4) izibuko.
Ukwahlukaniswa: Kubonisa amandla anikezelweyo kumthwalo ongadityaniswanga (P4)
Ilahleko yokuFaka: Oku kubalela amandla okufakwayo (P1) asiwe kwizibuko eligqithisiweyo (P2), elicuthwa ngamandla asiwe kumazibuko adityanisiweyo nakwanti.
Amaxabiso ezi mpawu kwi-dB ngala:
Ukudibanisa = C = 10 log (P1/P3)
Directivity = D = 10 log (P3/P4)
Ukwahlula = I = 10 log (P1/P4)
Ilahleko yokuFaka = L = 10 log (P1/P2)
Iintlobo zabatshatileyo
Olu hlobo lwe-coupler lunezibuko ezintathu ezifikelelekayo, njengoko kubonisiwe kwi-Fig. Umsebenzi osisiseko we-coupler ekhokelayo kukusampula isignali ekwanti (umva). Isicelo esiqhelekileyo kumlinganiselo wamandla abonakalisiweyo (okanye ngokungathanga ngqo, i-VSWR). Nangona inokudityaniswa ngasemva, olu hlobo lwe-coupler alunakuphikiswana. Kuba elinye lamazibuko adityanisiweyo lipheliswe ngaphakathi, inye kuphela isignali edibeneyo ekhoyo. Kumkhomba-phambili (njengoko kubonisiwe), izibuko elidityanisiweyo lithatha iisampulu zeliza elingasemva, kodwa ukuba liqhagamshelwe kwicala elingasemva (Igalelo le-RF ekunene), izibuko elidityanisiweyo liya kuba yisampulu yamaza angaphambili, ancitshiswe yinto edibanisayo. Ngolu qhagamshelo, isixhobo sinokusetyenziswa njengesampulu yomlinganiselo wesignali, okanye ukuhambisa inxalenye yesiginali yesiphumo kumjikelezo wengxelo.
Umzobo 2: 50-Ohm Directional Coupler
Izinto eziluncedo:
1, Ukwenziwa komsebenzi kunokwenzelwa indlela eya phambili
2. Ukwalatha okuphezulu kunye nokuba yedwa
3, I-directivity ye-coupler ichatshazelwa ngamandla ngumdlalo wokuthintela obonelelwa kukupheliswa kwizibuko elikwanti. Ukubonelela oko kupheliswa ngaphakathi kuqinisekisa ukusebenza okuphezulu
Izinto ezingeloncedo:
1, Ukudibanisa kufumaneka kuphela kwindlela eya phambili
2, Akukho mgca udityanisiweyo
3, Umlinganiselo wamandla wezibuko odityanisiweyo ungaphantsi kwezibuko longeniso kuba amandla asetyenziswa kwizibuko elidityanisiweyo aphantse achithwa ngokupheleleyo kukupheliswa kwangaphakathi.
Si Chuan Keenlion Microwave ukhetho olukhulu lwe-Directional Coupler kwi-narrowband kunye noqwalaselo lwe-broadband, olugubungela amaza ukusuka kwi-0.5 ukuya kwi-50 GHz. Zenzelwe ukuphatha ukusuka kwi-10 ukuya kwi-30 igalelo lamandla kwi-50-ohm inkqubo yokuhambisa. Uyilo lweMicrostrip okanye lwestripline luyasetyenziswa, kwaye lulungiselelwe ukusebenza kakuhle.
Iiyunithi ziza kumgangatho kunye ne-SMA okanye i-N iziqhagamshelo zabasetyhini, okanye i-2.92mm, 2.40mm, kunye ne-1.85mm izihlanganisi zamacandelo aphezulu.
Singakwazi kwakhona ukulungisa iI-Coupler yolwalathisongokweemfuno zakho. Ungangenisa iphepha lokulungiselela ukubonelela ngeenkcukacha ozifunayo.
Ixesha lokuposa: Aug-30-2022
