I-SAIC MG350/360/550/750 IZINGXENYE ZEMOTO ISIPHO SEMOTO I-modulator yesigaba – Phambili -10025921 Uhlelo lwamandla UMPHAKELI WEZINGXENYE ZEMOTO Ikhathalogi ye-mg ethengiswa ngobuningi intengo eshibhile yasefektri.

Isisekelo sokuguqulwa kwe-phase modulator:

Isignali yemvamisa yomsakazo iqukethe isithwali esinyakazayo ngesimo segagasi le-sine, okuyisisekelo sesignali. I-amplitude esheshayo ilandela le curve ngendlela enhle bese kuba negative, ibuyela endaweni yokuqala ngemva komjikelezo owodwa ogcwele - ilandela i-curve yegagasi le-sine. Igagasi le-sine lingamelwa futhi ukunyakaza okuzungeze iphuzu endulunguleni, futhi isigaba kunoma yiliphi iphuzu yi-Angle ephakathi kwendawo yokuqala kanye nephuzu efomini ye-wave. Isigaba siphinde siqhubeke ngokuhamba kwesikhathi, ngakho-ke amaphuzu efomini ye-wave kungathiwa anomehluko wesigaba phakathi kwawo. Ukuguqulwa kwesigaba kusebenza ngokuguqula isigaba sesignali, okungukuthi, ukushintsha izinga lapho iphuzu lihamba khona endulunguleni. Uma ukuguquguquka kungasetshenziswa, lokhu kushintsha isigaba sesignali. Ngamanye amazwi, ijubane lokujikeleza elizungeze indilinga liyaguqulwa maqondana nesilinganiso. Kulokhu, kuyadingeka ukushintsha imvamisa yesignali esikhathini esifushane. Ngamanye amazwi, lapho ukuguquguquka kwesigaba kusetshenziswa esignalini, kuba noshintsho lwemvamisa, futhi okuphambene nalokho. Isigaba kanye nemvamisa kuxhumene ngokungenakuhlukaniswa ngoba isigaba siyingxenye yemvamisa.

INJONGO: Ukwandisa ukuhlukaniswa kokufakwayo-kokuphuma kwe-modulator yesigaba sonke ngokunikeza isekethe yokusetha engu-zero eyenza i-voltage yesiginali kusuka kusekethe yokushayela engu-zero lapho kusetshenziswa isignali yokunqamula yenkampani.UMTHETHO: Isekethe yokushintsha i-diode 10 iyisekethe yokushintsha yohlobo lwesihlungi esinezigaba ezinhlanu esebenzisa ama-PIN diode 12 no-14; lapho ama-voltage ahlukene ngendlela eqondiswayo esetshenziswa kuma-diode 12 no-14 avela kusekethe yokulawula 16, iswishi iyavuleka futhi lapho kusetshenziswa ama-voltage angaphambili, ama-diode 12 no-14 enza isekethe emfushane, ngaleyo ndlela anqume i-carrier. Isekethe yokulawula 16 isebenzisa ama-voltage angaphambili kuma-diode 12 no-14 asetshenziswa ngesignali yokunqamula yenkampani. Isekethe yokushayela 30, lapho isignali yokunqamula yenkampani isetshenziswa ngomugqa 40, ilawula ngenkani isignali ye-voltage ezonikezwa i-modulator ye-PSK yezigaba ezimbili engu-20 kuya ku-zero.