Ekuxhumaneni ngomsakazo, isihlungi se-RF siyinto ebaluleke kakhulu kagesi. Ekusakazweni kwamasignali omsakazo, kuyohlale kunamabhendi esingawadingi, njengamasignali angamanga angadingekile; noma mhlawumbe ngenxa yezizathu ezithile ezikhethekile, asidingi ububanzi obuthile kumasignali omsakazo. Ngalesi sikhathi, sidinga ukuhlunga amabhendi efrikhwensi angafuneki ngezihlungi ze-RF. Ngakho-ke hlobo luni lwemishini kagesi Isihlungi se-RF futhi kungani ibaluleke kangaka? Lesi sabelo siwukuphendula lo mbuzo.
Ukwabelana Kuyanakekela!
Yini i-RF Filter
Isihlungi se-RF yisihlungi se-electronic, esisetshenziselwa ukususa noma ukugcina uchungechunge oluthile lwamabhendi efrikhwensi kumasignali omsakazo. Ngokuvamile isetshenziselwa ukucubungula amasiginali ebangeni le-MHz ukuya ku-KHz (MF kuya ku-EHF). Isetshenziswa ezinsizeni zokusakaza zomsakazo, ezinsizeni zokuxhumana ezingenazintambo, emishinini kamabonakude, kuhlanganisa nezidlulisi namazamukeli ahlukahlukene. Isetshenziselwa ukuqinisekisa ukuthi uhla oluthile lwamasignali angamanga angeke lusakazwe, futhi ingxenye yamasignali adingekayo izogcinwa.
Ekusakazweni komsakazo, isihlungi se-RF siyingxenye ye-elekthronikhi ebaluleke kakhulu, ngoba kumasignali omsakazo, ngaphezu kwengxenye esiyidingayo, kukhona ezinye esingazidingi. Ngakho-ke, sidinga izihlungi ze-RF ukuze sisuse izingxenye ezingafuneki. Uma udinga ukusebenzisa isihlungi se-RF ukuze usebenze ebangeni le-FM, qinisekisa ukuthi ibanga lefrikhwensi yokudlula noma ububanzi bokucindezela obumakwe kusihlungi se-RF buphakathi kuka-88 - 108MHz.
Imisebenzi Yezihlungi Ze-RF Ezihlukene
Ngokuvamile, izihlungi ezihlukene zinemisebenzi emine ekusakazeni komsakazo
Isihlungi Esiphansi
Isihlungi se-Low pass yisihlungi esivumela kuphela imvamisa ephansi ukuthi idlule. Izonqamula ibhendi yefrikhwensi ephakeme kunefrikhwensi ethile. Le ngxenye yebhendi yefrikhwensi izocindezelwa futhi ingavunyelwa ukuba idlule.
Kuvame ukusetshenziselwa ukuhlunga umsindo ovela kumasekhethi angaphandle kumasignali omsindo. Izimpawu zomsindo ezicutshungulwa isihlungi sephasi eliphansi zinekhwalithi ecacile.
Isihlungi sePhasi Ephakeme
Ngokuphambene, isihlungi sokudlula okuphezulu ivumela kuphela amafrikhwensi aphezulu ukuthi adlule futhi anqamule ibhendi yefrikhwensi ngaphansi kwefrikhwensi ethile. Isignali yomsindo kule bhendi izocindezelwa.
Ngokuvamile isetshenziselwa ukususa i-bass kuzipikha ezincane, ngakho-ke isihlungi sokudlula esiphezulu sivame ukwakhiwa kusipika.
Isihlungi se-Band Pass
Isihlungi se-bandpass yisihlungi esivumela uhla oluthile lwamasiginali wefrikhwensi ukuthi ludlule futhi lucindezela amanye amasiginali okungewona awale bhendi yefrikhwensi. Ibanga lefrikhwensi elingadluliswa lingakhethwa ngokukhululekile futhi lingaba izigaba ezimbili ezingaqhubeki zamafrikhwensi.
Ivame ukusetshenziswa kuma-wireware nama-transmitters. Umsebenzi wayo oyinhloko ku-transmitter ukunciphisa ingxenye engadingekile yezimpawu zokukhipha ukuze idatha edingekayo idluliselwe ngesivinini esidingekayo kanye nefomu kumkhawulokudonsa olinganiselwe. Kumamukeli, umsebenzi waso oyinhloko ukuvumela inani elifunekayo lamafrikhwensi futhi unqamule amasignali amanye amafrikhwensi. Ngokucutshungulwa kwesihlungi se-bandpass, ikhwalithi yesiginali ingathuthukiswa kakhulu futhi ukuncintisana nokuphazamiseka phakathi kwamasignali kungancishiswa.
Isihlungi se-Band Stop
Umsebenzi we isihlungi se-bandtop iphambene naleyo yesihlungi se-bandpass. Kuyisihlungi esicindezela kuphela uhla oluthile lwamafrikhwensi. Umsebenzi wayo uyafana nalowo wesihlungi se-bandpass, kodwa asebenza ngezindlela ezahlukene.
Ngokuvamile, kungakhathaliseki ukuthi luhlobo luni lwesihlungi, luyidivayisi ye-elekthronikhi evumela ukuthi isignali idlule ngosizo lwe-passband. Ngamafuphi, idivayisi ye-elekthronikhi enqaba ukudlula kwezimpawu zebanga elithile lamafrikhwensi futhi ivumele ukudlula kwamasignali kwamanye amafrikhwensi.
Kungani I-RF Filter Ibalulekile?
Siyazi ukuthi umsebenzi wesihlungi se-RF ukuvumela uhla oluthile lwamafrikhwensi ukuthi ludlule futhi luvimbele amanye amafrikhwensi ukuthi adlule. Kodwa ithini incazelo yalokhu?
- Thuthukisa ikhwalithi yezimpawu - Ekusakazweni komsakazo, ngemva kokusebenzisa isihlungi se-RF esifanele, ukuphazamiseka kwesignali okukhiqizwa uhlelo lokuxhumana kungavikelwa kalula, ukuze ikhwalithi yefrikhwensi yesignali edingekayo igcinwe.
- Gwema ukuphazamiseka kwemvamisa - Isibonelo, ukuxhumana kweselula kudinga inani elithile lamabhendi efrikhwensi ukuze kusebenze ngokujwayelekile. Uma singekho isihlungi se-RF esifanelekile, amasiginali wamabhendi efrikhwensi ahlukahlukene ngeke akwazi ukuhlinzeka ngamasevisi ngesikhathi esisodwa, okuhlanganisa i-Global Navigation Satellite System, ukuphepha komphakathi, i-Wi-Fi, njll.
Ngamafuphi, ingakhuphula isilinganiso samasignali amaza adingekayo esignali yomsakazo ngokucindezela isignali yamafrikhwensi athile, ukuze kuthuthukiswe ukwethembeka kwamasignali omsakazo.
Isiphetho
Ingabe usebenzisa esakho isiteshi somsakazo? Futhi udinga ukuthenga izihlungi ezifanele zemishini yakho yokusakaza umsakazo? Izihlungi ze-RF ezivela ku-FMUSER ziyizinketho zakho ezinhle kakhulu! Njengomhlinzeki wezinto zomsakazo ochwepheshe, sihlinzeka ngezinhlobo eziphelele zekhwalithi ephezulu izingxenye ze-passive futhi izokunikeza izixazululo ezithengekayo ngokusekelwe esimweni sakho. Uma unezidingo ekusakazeni umsakazo, sicela ukhululeke Xhumana nathi.
