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Isiseko semodyuli yenqanaba lemodyuli:

Isignali yefrikhwensi yerediyo ibandakanya umthwali ojikelezayo ngendlela ye-sine wave, esisiseko somqondiso. I-amplitude ekhawulezileyo ilandela eli jiko kwicala elilungileyo nelibi, libuyela kwindawo yokuqala emva komjikelo opheleleyo omnye - lilandela igophe le-sine wave. I-sine wave inokumelwa yintshukumo ejikeleze inqaku kwisangqa, kwaye isigaba nakweyiphi na indawo yi-Angle phakathi kwendawo yokuqala kunye nenqaku kwi-waveform. Isigaba sikwaqhubela phambili ngokuhamba kwexesha, ke amanqaku akwimo yamaza anokuthiwa anomahluko wesigaba phakathi kwawo. Ukumodareyitha kwesigaba kusebenza ngokumodareyitha isigaba somqondiso, oko kukuthi, ukuguqula izinga apho inqaku lijikeleza khona isangqa. Ukuba imodyuli ayisetyenziswanga, oku kutshintsha isigaba somqondiso. Ngamanye amazwi, isantya sokujikeleza kwisangqa silungiswa ngokumalunga nentsingiselo. Kule nto, kuyimfuneko ukutshintsha i-frequency yesignali ngexesha elifutshane. Ngamanye amazwi, xa ukumodareyitha kwesigaba kusetyenziswa kwisignali, kukho utshintsho lwamaza, kwaye ngokuphambeneyo. Isigaba kunye nefrikhwensi zinxulunyaniswe ngokungenakuhlukaniswa kuba isigaba sisidibaniso sokuphindaphinda.

INJONGO:Ukwandisa i-input-output isolation ye-modulator yesigaba siphela ngokubonelela ngesekethe yokumisela i-zero eyenza i-voltage yesignali ukusuka kwisekethe yokuqhuba i-zero xa i-carrier cut-off signal isetyenziswa.UMGAQO-SISEKO:I-Diode switch circuit 10 yinqanaba lesihlanu. i-low-pass filter type switch switch circuit usebenzisa i-PIN diodes 12 kunye ne-14; xa i-voltages eyahlukileyo kwicala isetyenziswe kwii-diodes 12 kunye ne-14 ukusuka kwisiphaluka sokulawula i-16, i-switch switch ijika kwaye xa i-voltages yangaphambili isetyenziswa, i-diodes 12 kunye ne-14 iqhuba ukwenza isiphaluka esifutshane, ngaloo ndlela inqumle umthwali. Isiphaluka sokulawula i-16 sisebenzisa i-voltages yangaphambili kwi-diode ye-12 kunye ne-14 esetyenziswe nge-carrier cut-off signal. Isekethe yokuqhuba i-30, xa i-carrier cut-off signal isetyenziswa ngomgca we-40, ilawula ngokunyanzeliswa isignali ye-voltage ukuba inikwe imodyuli ye-PSK ye-20 ukuya kwi-zero.