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Yintoni iIsihluzo se-RF?

Isihluzo samaza kanomathotholo yinxalenye ebalulekileyo yobuchwepheshe obungenazingcingo. Isetyenziswa kunye nomamkeli werediyo ukucoca ezinye iibhendi zamaza ngokungeyomfuneko kwaye ufumane kuphela amaza achanekileyo. Izihluzi zeRF ziyilelwe ukuba zisebenze ngokulula kuluhlu lwamaza ukusuka kwifrikhwensi ephakathi ukuya kumaza aphezulu kakhulu (oko kukuthi i-megahertz kunye negigahertz). Ngenxa yeempawu zayo zokusebenza, isetyenziswa kakhulu kwizikhululo zikanomathotholo, unxibelelwano olungenazingcingo, umabonakude kunye nezinye izixhobo.

Ngokubanzi, uninzi lwezihluzi zeRF zenziwe ziresonators ezidityanisiweyo, kwaye iimeko zazo zomgangatho zinokumisela inqanaba lokucoca kwiRF. Ngokwesicelo kunye nobungakanani besixhobo esingenazingcingo, zininzi iintlobo zokucoca, ezizezi, isihluzo se-cavity, isihluzo senqwelomoya, isihluzo se-electroacoustic, isihluzo se-dielectric, isihluzo se-coaxial (esizimeleyo kwintambo ye-coaxial), njl.

Iindidi ezisisiseko zesihluzo seRadio Frequency

Isihluzi seRF yisekethe ekhethekileyo evumela iimpawu ezichanekileyo ukuba zidlule ngelixa kususwa iisignali ezingafunekiyo. Ngokubhekiselele kwi-topology yokucoca, kukho iintlobo ezine ezisisiseko zokucoca iRF, ezizezi, isihluzo sokupasa okuphezulu, isihluzo sokupasa esisezantsi, isihluzo sokugqitha ngebhendi kunye nesihluzo sokumisa ibhendi.

Isihluzi sokuPasa okuPhantsi:

Njengoko igama lisitsho, icebo lokucoca ulwelo olusezantsi sisihluzo esivumela kuphela iifrikhwensi ezisezantsi ukuba zidlule kwaye zicuthe ezinye iifrikhwensi zesignali ngexesha elinye. Xa isignali idlula kwi-bandpass, ukucuthwa kwayo rhoqo kugqitywa zizinto ezininzi, ezifana ne-topology yokucoca, i-layout kunye nomgangatho wecandelo. Ukongeza, i-topology yokucoca ikwamisela isantya sokutshintsha kwesihluzi ukusuka kwi-passband ukufezekisa ukucinezelwa kwayo kokugqibela.

Izihluzi zokudlula okusezantsi ziza ngeendlela ezahlukeneyo. Usetyenziso oluphambili lwesihluzi kukucinezela iharmonic yeamplifier yeRF. Olu phawu lubalulekile kuba lunceda ukuthintela ukuphazamiseka okungeyomfuneko kwiibhanti zothumelo ezahlukeneyo. Ngokuyintloko, izihluzi zokupasa ezisezantsi zisetyenziselwa usetyenziso lweaudio kunye nokucoca ingxolo kuyo nayiphi na isekethe yangaphandle. Emva kokuba i-high-frequency signal ihluziwe, i-frequency ye-signal efunyenweyo inomgangatho ocacileyo.

Isihluzi sokuPasa okuphezulu:

Ngokwahlukileyo kwisihluzo sokupasa esisezantsi, isihluzi sokupasa okuphezulu sivumela kuphela iisiginali eziphezulu ukuba zidlule. Enyanisweni, isihluzo sokupasa esiphezulu kunye nesihluzo sokupasa esisezantsi siyahambelana kakhulu, kuba zombini izihluzi zingasetyenziswa kunye ukuvelisa i-band-pass filter. Uyilo lwesihluzi sokupasa okuphezulu sithe ngqo kwaye sinciphisa ukuphindaphindeka okungaphantsi kwenqanaba.

Ngokubanzi, izihluzi zokupasa eziphezulu zisetyenziswa kwiinkqubo zomsindo, apho zonke iifrikhwensi ezisezantsi zihluzwa. Ukongeza, isetyenziselwa ukususa izithethi ezincinci kunye neebhasi kwiimeko ezininzi; Ezi zihluzo zakhiwe ngokukodwa kwizithethi. Nangona kunjalo, ukuba nayiphi na iprojekthi ye-DIY ibandakanyeka, isihluzo sokupasa esiphezulu sinokudibaniswa lula kwinkqubo.

Izihluzi zeBand Pass:

I-band-pass filter yisekethe evumela imiqondiso evela kwiifrikhwensi ezimbini ezahlukeneyo ukuba idlule kwaye ithobe imiqondiso engekho phakathi koluhlu lwalo olwamkelekileyo. Uninzi lwezihluzi ze-band-pass zixhomekeke kuwo nawuphi na umthombo wamandla wangaphandle kwaye zisebenzise izinto ezisebenzayo, ezizezi, iisekethe ezidibeneyo kunye neetransistors. Olu hlobo lwesihluzi lubizwa ngokuba luluhlu lwe-band-pass esebenzayo. Kwelinye icala, ezinye izihluzi ze-band-pass azisebenzisi unikezelo lwamandla lwangaphandle kwaye zithembele kakhulu kumacandelo angenayo, angale inductors kunye ne-capacitors. Ezi zihluzo zibizwa ngokuba zizihluzi ze-band-pass.

Izihluzi zeBandpass ziqhele ukusetyenziswa kwii-wireware kunye nee-transmitter. Umsebenzi wayo oyintloko kwi-transmitter kukunciphisa umda we-bandwidth yesignali yokuphuma kwinqanaba elincinci, ukwenzela ukuba idatha efunekayo idluliselwe kwisantya esifunekayo kunye nefom. Xa umamkeli ebandakanyeka, i-band-pass filter ivumela kuphela i-decoding okanye ukuva inani elifunekayo le-frequencies, ngelixa linqumla ezinye iimpawu kwiifrikhwensi ezingafunekiyo.

Ngegama, xa i-band-pass filter iyilwe, inokwandisa ngokulula umgangatho wesignali kunye nokunciphisa ukhuphiswano okanye ukuphazamiseka phakathi kweempawu.

Ibhendi yaliwe:

Ngamanye amaxesha kuthiwa yi-band stop filter, i-band stop filter sisihluzo esivumela iifrikhwensi ezininzi ukuba zidlule ngaphandle kokutshintsha. Nangona kunjalo, ithoba ii-frequencies ngaphantsi koluhlu oluthile kakhulu. Umsebenzi wayo uchasene ngokupheleleyo nalowo we-band-pass filter. Ngokusisiseko, umsebenzi wayo kukudlula i-frequency ukusuka kwi-zero ukuya kwindawo yokuqala yokunqunyulwa kwamaza. Phakathi, idlula zonke ii-frequencies ngaphezu kwendawo yesibini yokunqunyulwa kwe-frequency. Nangona kunjalo, iyala okanye ivimba zonke ezinye iifrikhwensi phakathi kwala manqaku mabini.

Ngegama, isihluzi yinto evumela ukuba iimpawu zidlule ngoncedo lwe-passband. Ngamanye amazwi, i-stopband kwisihluzi yindawo apho ezinye iifrikhwensi zaliwe nasiphi na isihluzi. Nokuba kukupasa okuphezulu, ukupasa okuphantsi okanye ibhendi yokupasa, isihluzo esifanelekileyo sisihluzo esingenalahleko kwibhendi yokupasa. Nangona kunjalo, eneneni, akukho sihluzo sifanelekileyo kuba i-bandpass iya kuba nelahleko yefrikhwensi kwaye akunakwenzeka ukufezekisa ucinezelo olungenasiphelo xa i-stopband ifikelelwe.

Kutheni izihluzi zerediyo eziphindaphindwayo zibaluleke kangaka?

Izihluzi zeRF zisetyenziselwa ukwahlula iifrikhwensi zomqondiso, kodwa yintoni ezenza zibaluleke kangaka? Ngokufutshane, izihluzi zeRF zinokuhluza ingxolo ezinokuchaphazela umgangatho okanye ukusebenza kwayo nayiphi na inkqubo yonxibelelwano okanye ukunciphisa ukuphazamiseka kwemiqondiso yangaphandle. Ukunqongophala kwesihluzo esifanelekileyo seRF kungonakalisa usasazo lwefrikhwensi yomqondiso, kwaye ekugqibeleni kungonakalisa inkqubo yonxibelelwano.

Ke ngoko, izihluzi zeRF zidlala indima ebalulekileyo kwiinkqubo zonxibelelwano ezingenazingcingo (oko kukuthi, isathelayithi, iradar, iisistim ezingenazingcingo eziphathwayo, njl. njl.). Xa kuziwa ekusebenzeni kwezithuthi zasemoyeni ezingenamntu (UAS), ukubaluleka kwezihluzo zeRF kuyabonakala. Ukunqongophala kwenkqubo efanelekileyo yokucoca kuya kuchaphazela i-UAS ngeendlela ezininzi, ezifana:

Uluhlu lonxibelelwano lunokuncitshiswa ekuphazamiseni okubangelwa yimiba yangaphandle yokusingqongileyo. Ukongeza, ubukho benani elikhulu lemiqondiso yeRF kwiatmosfera kunokubangela umonakalo omkhulu kwinkqubo yonxibelelwano ye-UAV. Iimpawu ezikhohlakeleyo ezivela kwamanye amaqonga ziquka kodwa aziphelelanga:; Umsebenzi onzulu wophawu lwe-Wi-Fi kunye nezinye iinkqubo zonxibelelwano ezisebenza ngaphakathi kwe-UAS.

Iziphazamiso ezivela kwezinye iinkqubo zonxibelelwano ziya kuphazamisa ijelo lonxibelelwano le-UAS, ngokwenjenjalo kuncitshiswa okanye kuthintelwe uluhlu lonxibelelwano lwezo nkqubo.

Ungenelelo luya kuchaphazela kwakhona ulwamkelo lophawu lweGPS lwe-UAS; Oku kwandisa amathuba okuba neempazamo ekulandeleleni iGPS. Kwimeko embi kakhulu, oku kunokubangela ilahleko epheleleyo yolwamkelo lomqondiso weGPS.

Ngesihluzo esifanelekileyo seRF, ukuphazamiseka kwangaphandle kunye nokuphazamiseka komqondiso oveliswa ziinkqubo zonxibelelwano ezimeleneyo kunokupheliswa ngokulula. Oku kugcina umgangatho wefrikhwensi yophawu olufunekayo ngelixa ucoca ngokulula zonke iifrikhwensi zomqondiso ezingafunwayo.

Ukongeza, izihluzi zeRF zikwadlala indima ebalulekileyo kwimeko yefowuni ephathwayo. Xa kuziwa kwiifowuni eziphathwayo, zidinga inani elithile leebhendi zamaza ukuze zisebenze ngokufanelekileyo. Ngenxa yokunqongophala kwezihluzo ezifanelekileyo zeRF, ii-frequency bands ezahlukeneyo aziyi kuhlalisana ngaxeshanye, nto leyo ethetha ukuba ezinye ii-frequency bands ziya kwaliwa, ezizezi, iGlobal Navigation Satellite System (GNSS), ukhuseleko loluntu, iWi Fi, njl.

Ngokubanzi, izihluzi zinobunzima obulula kwaye zinceda ukuphucula ukusebenza komqondiso. Ukuba isihluzo seRF asiboneleli ngendlela oyifunayo, ungaphonononga ezinye iinketho ezahlukeneyo, enye yazo kukongeza i-amplifiers kuyilo lwakho. Ukusuka kwigridi yeamplifier ukuya kuyo nayiphi na enye i-RF iamplifier yamandla, unokuguqula amaza ophawu asezantsi ukuya kumaza ophawu aphezulu; Ukuze kuphuculwe ukusebenza ngokubanzi koyilo lweRF.

Si Chuan Keenlion Microwave ukhetho olukhulu kwi-narrowband kunye noqwalaselo lwebroadband, egubungela amaza ukusuka kwi-0.5 ukuya kwi-50 GHz. Zenzelwe ukuphatha ukusuka kwi-10 ukuya kwi-30 igalelo lamandla kwi-50-ohm inkqubo yokuhambisa. Uyilo lweMicrostrip okanye lwestripline luyasetyenziswa, kwaye lulungiselelwe ukusebenza kakuhle.

Sisenokwenza isihluzo seRF ngokweemfuno zakho. Ungangenisa iphepha lokulungiselela ukubonelela ngeenkcukacha ozifunayo.

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Sichuan Keenlion Microwave Technology Co., Ltd.

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