Kodi Chizindikiro cha Foni Yam'manja Chimachokera Kuti?

Q1. Kodi chizindikiro cha foni yam'manja chimachokera kuti?
Ndikukhulupirira kuti anthu ambiri amvapo za mawu awiriwabase station kapena sign station (nsanja), koma kwenikweni ndi chinthu chimodzi. Chizindikiro cha foni yam'manja chimafalitsidwa kudzera mu chinthu chomwe timachitcha kuti base station.

Q2. Kodi electromagnetic wave ndi chiyani?
Kunena mwachidule, mafunde a electromagnetic ndi mafunde a tinthu tating'onoting'ono tomwe amatengedwa ndikutulutsidwa mumlengalenga ndi minda yamagetsi ndi maginito yomwe ili mu gawo ndi perpendicular kwa wina ndi mnzake. Ndi minda yamagetsi yamagetsi yomwe imafalikira mu mawonekedwe a mafunde ndipo imakhala ndi mawonekedwe amitundu iwiri. Liwiro la kufalitsa: liwiro la mulingo wa kuwala, palibe njira yofalitsira yomwe imafunikira (Mafunde amawu amafunikira sing'anga). Mafunde a electromagnetic amatengeka ndikuwonetseredwa akakumana ndi zitsulo, ndipo amafooka akatsekeredwa ndi nyumba, ndipo amafooka ngati kuli mphepo, mvula komanso mabingu. Kufupikitsa kwa kutalika kwa mafunde komanso kuchulukira kwa mafunde a electromagnetic, m'pamenenso data imafalikira pa nthawi ya unit.

Q3. Kodi tingakweze bwanji chizindikiro?
Pano pali njira ziwiri. Chimodzi ndikudziwitsa opareshoni yanu kuti chizindikiro chakumaloko sichabwino, ndipo dipatimenti yokhathamiritsa maukonde ipita kukayesa mphamvu ya siginecha. Ngati mphamvu ya siginecha siyikukwaniritsa zofunikira, wogwiritsa ntchitoyo amamanga malo oyambira pano kuti akonze maukonde anu.

Chimodzi ndicho kugwiritsa ntchito chokulitsa chizindikiro cha foni yam'manja. Mfundo yake ndikugwiritsa ntchito mlongoti wakutsogolo (mlongoti wopereka) kuti mulandire chizindikiro chotsikirapo cha siteshoni yoyambira kubwereza, kukulitsa chizindikiro chothandizira kudzera pa amplifier yaphokoso lotsika, kupondereza siginecha yaphokoso mu siginecha, ndikuwongolera ma sign-to. -Chiwerengero chaphokoso (S/N); Kenako imasinthidwa kukhala siginecha yapakatikati, yosefedwa ndi fyuluta, yokulitsidwa ndi ma frequency apakatikati, kenako imasinthidwa pafupipafupi ndikusinthidwa kukhala ma frequency a wayilesi, yokulitsidwa ndi amplifier yamagetsi, ndikutumizidwa ku siteshoni yam'manja ndi kumbuyo. mlongoti (retransmitting mlongoti); Nthawi yomweyo, chizindikiro cha uplink cha siteshoni yam'manja imalandiridwa ndi mlongoti wakumbuyo, ndikusinthidwa ndi ulalo wa uplink amplification motsatira njira ina: ndiye kuti, imaperekedwa ku siteshoni yoyambira kudzera pa amplifier ya phokoso lotsika, pansi. -converter, fyuluta, amplifier yapakatikati, up-converter, ndi amplifier mphamvu, potero Kukwaniritsa kulankhulana kwanjira ziwiri pakati pa siteshoni yoyambira ndi siteshoni yam'manja.

Ma amplifiers a foni yam'manja atha kugwiritsidwa ntchito m'matauni owundana, m'mphepete mwamatauni ndi m'midzi, komanso kumidzi. Ndi yabwino kwambiri. Kodi mumakonda njira iti?

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