Apo patinotumira chiratidzo, kana chiri chiratidzo chemaziso, chiratidzo chemagetsi, kana chikwangwani chisina wire, kana chikatumirwa zvakananga, chiratidzo chinovhiringidzwa nyore nyore neruzha, uye zvakaoma kuwana ruzivo rwakarurama pamagumo ekugamuchira. Kuti uvandudze kugona kwe-anti-kupindira kweiyo system, inogona kuitika nekugadzirisa chiratidzo. Modulation inogona zvakare kushandisa zvirinani zviteshi, saka zvine chekuita nekushanda zvakanaka uye nekuvimbika masisitimu ekutaurirana.
Iyo angle modulation inotsanangurwa pazasi ndeye masaini eanalogue.
Mutakuri we sinusoidal ane ma parameter matatu:amplitude, frequency, uye phase. Isu tinogona kurodha ruzivo rweiyo modulated chiratidzo kwete chete mune amplitude shanduko yemutakuri asiwo mune frequency kana chikamu shanduko yeanotakura. Munguva yekushandura, kana kuwanda kwemutakuri kunosiyana nechiratidzo chemodulation, inonzi frequency modulation kana frequency modulation (FM); kana chikamu chemutakuri chichisiyana nechiratidzo chemodulation, chinodaidzwa kuti phase modulation kana phase modulation (PM) Mumhando mbiri idzi dzematanho ekugadzirisa, amplitude yemutakuri inoramba iripo, uye shanduko yefrequency nechikamu inoratidzwa se kuchinja kwechikamu chekare chemutakuri. Naizvozvo, FM uye chikamu modulation zvakabatanidzwa zvinonzi sekona modulation.
Musiyanopakati pekona modulation uye amplitude modulation ndeyekuti iyo modulated siginecha spectrum haisisiri iyo mutsara yekuchinja kweiyo yekutanga modulated chiratidzo spectrum, asi iyo isina mutsara shanduko yeiyo spectrum, iyo inoburitsa mitsva yefrequency zvikamu zvakasiyana kubva kune spectrum shift, saka inonzi zvakare. non linear modulation.
FM uye PManoshandiswa zvakanyanya muhurongwa hwekutaurirana. FM inoshandiswa zvakanyanya mukutepfenyura mumhanzi wepamusoro-soro, kutapurirana kwechiratidzo cheTV, kutaurirana setiraiti, uye masisitimu enharembozha. Pamusoro pekushandiswa zvakananga kutapurirana, PM inowanzoshandiswa seshanduko yekugadzira zvisina kunanga masaini eFM. Pane hukama hwepedyo pakati pe frequency modulation uye phase modulation.
Kuenzaniswa neiyo amplitude modulation tekinoroji, iyo inonyanya kukosha mukana weiyo angle modulation ndeye yakakwira anti ruzha kuita. Zvisinei, pane kuwana uye kurasikirwa. Mutengo wekuwana mukana uyu ndewekuti iyo angle modulation inogara yakafara bandwidth pane iyo amplitude modulation chiratidzo.
Iri pamusoro ndiyo tsananguro yezvibodzwa zveruzivo nezve nonlinear modulation (angle modulation) yakaunza HDV photoelectric Technology Co., Ltd. Shenzhen HDV photoelectric Technology Co., Ltd. inonyanya kugadzira zvigadzirwa zvekutaurirana. Parizvino, midziyo inogadzirwa inovhara iyoONU series, Optical module series, OLT series,uyetransceiver series. Isu tinogona kupa masevhisi akagadziridzwa kune akasiyana mamiriro. Unogamuchirwaconsult.
