Phase Modulator - Nzvimbo Yekutanga
Hwaro hwekushandura modulator modulation:
Radio radio signal ine chiratidzo cheOscillating inotakura mune fomu yeSine wave, iyo iri hwaro hwechiratidzo. Iyo yekunyora amplitude inotevera iyi curve mune yakanaka uye yakashata kutungamira, kudzokera kunzvimbo yekutanga mushure mekutenderera kamwe chete - inotevera curve of the sine wave. A maveya mautina anokwanisawo kumiririrwa nekufamba kwakatenderedza nzvimbo mudenderedzwa, uye chikamu pane chero nzvimbo yakapihwa ndeyekona pakati pekutanga nepfungwa pane iyo maimbe. Chikamu chinofambira mberi nekufamba kwenguva, saka mapoinzi pane iyo waveform inogona kutaurwa kuve neChikamu musiyano pakati pavo. Dhairelation modulation inoshanda nekufambisa chikamu chechiratidzo, icho chiri, kuchinja mwero uko pfungwa inofamba ichitenderedza denderedzwa. Kana modulation isina kuiswa, izvi zvinoshandura chikamu chechiratidzo. Mune mamwe mazwi, kumhanya kwekutenderera kwakakomberedza denderedzwa kunoremekedzwa kune zvinoreva zvinoreva. Kune izvi, zvinodikanwa kuti uchinje kuwanda kwechiratidzo munguva pfupi yenguva. Mune mamwe mazwi, apo modulation phase isishandiswe kune chiratidzo, pane shanduko yekuwedzera, uye zvinopesana. Phase uye frequency idzo dzinoshamisika dzakabatanidzwa nekuti chikamu chikamu chakakosha chehuwandu.
Chinangwa: Kuti uwedzere kuparadzaniswa-nekuzviparadzaniswa kweiyo modulator yekuisa chikamu chezasi kana chichitema. Kana voltages ichisiyana munzira inoiswa kuna Diodes 12 ne14 kubva mukutonga dunhu 16, switch inotendeuka uye kana Diodes 12 ne14 maitiro ekuumba dunhu pfupi, nekudaro achicheka mutakuri. Dzora Dunhu 16 Inoshandisa Mbiru Yezvipfuyo kuDiodes 12 ne14 inoshandiswa neyekutakura yakatemwa chiratidzo. Kutyaira Circuit 30, apo iyo inotakura-kubvisa chiratidzo ichiiswa kuburikidza nemutsara makumi mana, inodzora chiratidzo chechiratidzo chekuvharisa kuti ipe mbiri- phase psk modulator 20 kusvika zero.
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