Nkhani

Kodi ndi chiyaniRF fyuluta?

Fyuluta yawayilesi ndi gawo lofunikira laukadaulo wopanda zingwe. Amagwiritsidwa ntchito limodzi ndi cholandirira wailesi kusefa magulu ena osafunikira ndikulandila ma frequency olondola. Zosefera za RF zidapangidwa kuti zizigwira ntchito mosavuta pama frequency apakati mpaka ma frequency apamwamba kwambiri (ie megahertz ndi gigahertz). Chifukwa cha mawonekedwe ake ogwirira ntchito, amagwiritsidwa ntchito kwambiri pamawayilesi, mauthenga opanda zingwe, wailesi yakanema ndi zida zina.

Nthawi zambiri, zosefera zambiri za RF zimapangidwa ndi ma resonator ophatikizika, ndipo mawonekedwe awo amatha kudziwa kuchuluka kwa kusefa mu RF. Malinga ndi kugwiritsa ntchito ndi kukula kwa zida zopanda zingwe, pali mitundu yambiri ya zosefera, zomwe ndi fyuluta ya patsekeke, fyuluta ya ndege, fyuluta ya electroacoustic, fyuluta ya dielectric, fyuluta ya coaxial (yodziimira pa chingwe coaxial), ndi zina zotero.

Mitundu Yoyambira ya Zosefera za Wailesi

Fyuluta ya RF ndi dera lapadera lomwe limalola kuti ma sign olondola adutse ndikuchotsa ma siginecha osafunika. Pankhani ya fyuluta topology, pali mitundu inayi yosefera ya RF, yomwe ndi fyuluta yapamwamba, fyuluta yotsika, fyuluta ya band pass ndi band stop fyuluta.

Zosefera za Low Pass:

Monga momwe dzinalo likusonyezera, fyuluta yotsika ndi fyuluta yomwe imalola kuti maulendo otsika adutse ndikuchepetsa ma frequency ena nthawi imodzi. Chizindikiro chikadutsa pa bandpass, kuchepetsa kwake pafupipafupi kumatsimikiziridwa ndi zinthu zambiri, monga fyuluta topology, masanjidwe ndi mtundu wagawo. Kuphatikiza apo, topology ya fyuluta imatsimikiziranso liwiro la kusintha kwa fyuluta kuchokera ku passband kuti ikwaniritse kuponderezedwa kwake komaliza.

Zosefera zochepa zimabwera m'njira zosiyanasiyana. Kugwiritsa ntchito kwakukulu kwa fyuluta ndikupondereza ma harmonic a RF amplifier. Mbali imeneyi ndi yofunika chifukwa imathandiza kupewa kusokonezedwa kosafunikira kwa magulu osiyanasiyana opatsirana. Makamaka, zosefera zochepa zimagwiritsidwa ntchito pazomvera ndikusefa phokoso kuchokera kudera lililonse lakunja. Pambuyo pakusefedwa kwamtundu wapamwamba kwambiri, ma frequency omwe apezeka amakhala ndi mawonekedwe omveka bwino.

Zosefera za High Pass:

Mosiyana ndi fyuluta yotsika, fyuluta yapamwamba imalola kuti ma siginecha apamwamba kwambiri adutse. M'malo mwake, fyuluta yapamwamba kwambiri ndi zosefera zotsika ndizothandizirana kwambiri, chifukwa zosefera zonse zitha kugwiritsidwa ntchito limodzi kupanga fyuluta ya band-pass. Mapangidwe a fyuluta yapamwamba ndi yachindunji ndipo amachepetsera mafupipafupi omwe ali pansi pa malo olowera.

Nthawi zambiri, zosefera zapamwamba zimagwiritsidwa ntchito pamakina omvera, momwe ma frequency onse otsika amasefedwa. Kuonjezera apo, amagwiritsidwanso ntchito kuchotsa oyankhula ang'onoang'ono ndi mabasi nthawi zambiri; Zosefera izi zimapangidwira mwa olankhula. Komabe, ngati polojekiti iliyonse ya DIY ikukhudzidwa, fyuluta yapamwamba imatha kulumikizidwa mosavuta ndi dongosolo.

Zosefera za Band Pass:

Fyuluta ya band-pass ndi dera lomwe limalola kuti ma siginecha ochokera kumayendedwe awiri osiyanasiyana adutse ndikuchepetsa ma siginecha omwe sali m'njira yovomerezeka. Zosefera zambiri za band-pass zimadalira gwero lililonse lamagetsi lakunja ndikugwiritsa ntchito zida zogwira ntchito, zomwe ndi mabwalo ophatikizika ndi ma transistors. Zosefera zamtundu uwu zimatchedwa active band-pass fyuluta. Kumbali ina, zosefera zina za band-pass sizigwiritsa ntchito magetsi akunja ndipo zimadalira kwambiri zida zomwe zili ndi ma inductors ndi ma capacitor. Zosefera izi zimatchedwa passive band-pass filters.

Zosefera za bandpass zimagwiritsidwa ntchito kwambiri polandila opanda zingwe ndi ma transmitters. Ntchito yake yayikulu mu transmitter ndikuchepetsa bandwidth ya chizindikiro chotulutsa mpaka chochepa, kotero kuti deta yofunikira imatha kufalikira pa liwiro lofunikira ndi mawonekedwe. Wolandirayo akakhudzidwa, fyuluta ya band-pass imangolola kutsitsa kapena kumva kuchuluka kwa ma frequency ofunikira, kwinaku akudula ma siginecha ena pamayendedwe osafunikira.

Mwachidule, fyuluta ya band-pass ikapangidwa, imatha kukulitsa mtundu wa chizindikiro ndikuchepetsa mpikisano kapena kusokoneza pakati pa ma siginecha.

Kukana Bandi:

Nthawi zina amatchedwa band stop fyuluta, band stop fyuluta ndi fyuluta yomwe imalola kuti ma frequency ambiri adutse popanda kusintha. Komabe, imatsitsa ma frequency pansi pamtundu wina wake. Ntchito yake ndi yosiyana kwambiri ndi fyuluta ya band-pass. Kwenikweni, ntchito yake ndikudutsa ma frequency kuchokera ku zero kupita kumalo odulidwa oyamba a ma frequency. Pakati, imadutsa ma frequency onse pamwamba pa gawo lachiwiri lodulidwa la ma frequency. Komabe, imakana kapena kutsekereza ma frequency ena onse pakati pa mfundo ziwirizi.

Mwachidule, fyuluta ndi chinthu chomwe chimalola kuti zizindikiro zidutse mothandizidwa ndi passband. Mwanjira ina, choyimitsa mu fyuluta ndi pomwe ma frequency ena amakanidwa ndi fyuluta iliyonse. Kaya ndi kupita kwapamwamba, pass pass kapena band pass, fyuluta yoyenera ndi fyuluta yopanda kutayika mu gulu la pass. Komabe, zenizeni, palibe fyuluta yabwino chifukwa bandpass imakumana ndi kutayika pafupipafupi ndipo ndizosatheka kukwaniritsa kuponderezedwa kosatha pamene kuyimitsidwa kwafika.

N'chifukwa Chiyani Zosefera za Ma Radio Frequency zili Zofunika Kwambiri?

Zosefera za RF zimagwiritsidwa ntchito kugawa ma frequency azizindikiro, koma ndi chiyani chomwe chimawapangitsa kukhala ofunika kwambiri? Mwachidule, zosefera za RF zimatha kusefa phokoso lomwe lingakhudze khalidwe kapena machitidwe a njira iliyonse yolankhulirana kapena kuchepetsa kusokoneza kwa ma sign akunja. Kusowa kwa fyuluta yoyenera ya RF kumatha kuwononga kufalikira kwa ma frequency azizindikiro, ndipo pamapeto pake kuwononga njira yolumikizirana.

Chifukwa chake, zosefera za RF zimagwira ntchito yofunikira pamakina olumikizirana opanda zingwe (mwachitsanzo, satellite, radar, ma waya opanda zingwe, ndi zina). Pankhani yoyendetsa magalimoto osayendetsedwa ndi ndege (UAS), kufunikira kwa zosefera za RF ndizodziwikiratu. Kupanda makina osefa oyenera kudzakhudza UAS m'njira zambiri, monga:

Njira yolumikizirana imatha kuchepetsedwa ndikusokonezedwa ndi zinthu zachilengedwe zakunja. Kuphatikiza apo, kupezeka kwa ma siginecha ambiri a RF mumlengalenga kumatha kuwononga kwambiri njira yolumikizirana ya UAV. Zizindikiro zoyipa zochokera kumapulatifomu ena zimaphatikizapo koma sizimangokhala:; Zochitika zazikulu za ma siginolo a Wi-Fi ndi njira zina zoyankhulirana zomwe zikugwira ntchito mkati mwa UAS.

Zosokoneza za njira zina zoyankhulirana zidzasokoneza njira yolankhulirana ya UAS, motero kuchepetsa kapena kuchepetsa njira zoyankhulirana za machitidwe otere.

Kusokoneza kudzakhudzanso kulandira chizindikiro cha GPS cha UAS; Izi zimawonjezera kuthekera kwa zolakwika pakutsata kwa GPS. Zikavuta kwambiri, izi zitha kupangitsa kuti kulandila kwa ma sign a GPS kutayike.

Ndi fyuluta yoyenera ya RF, kusokoneza kwakunja ndi kusokoneza ma siginecha kopangidwa ndi njira zoyankhulirana zoyandikana zitha kuthetsedwa mosavuta. Izi zimasunga mtundu wa ma frequency omwe amafunidwa ndikusefa mosavuta ma frequency onse osafunikira.

Kuphatikiza apo, zosefera za RF zimagwiranso ntchito yofunika kwambiri pama foni am'manja. Pankhani ya mafoni a m'manja, amafunika kuchuluka kwa ma frequency band kuti agwire bwino ntchito. Chifukwa cha kusowa kwa zosefera zoyenera za RF, magulu osiyanasiyana afupipafupi sadzakhalapo nthawi imodzi, zomwe zikutanthauza kuti magulu ena afupipafupi adzakanidwa, omwe ndi, Global Navigation Satellite System (GNSS), chitetezo cha anthu, Wi Fi, ndi zina zotero.

Nthawi zambiri, zosefera zimakhala zopepuka komanso zimathandizira kukonza magwiridwe antchito amtundu wa ma siginoloji. Ngati fyuluta ya RF sikupereka zomwe mukufuna, ndiye kuti mutha kuyang'ana njira zina zosiyanasiyana, imodzi mwazo ndikuwonjezera zokulitsa pamapangidwe anu. Kuchokera pa grid amplifier kupita kumtundu wina uliwonse wamagetsi a RF, mutha kusintha ma frequency ocheperako kukhala ma frequency apamwamba; Kuti apititse patsogolo magwiridwe antchito a RF.

Si Chuan Keenlion Microwave kusankha kwakukulu mumipangidwe yocheperako komanso ma Broadband, kuphimba ma frequency kuchokera ku 0.5 mpaka 50 GHz. Amapangidwa kuti azigwira kuchokera pa 10 mpaka 30 watts kulowetsa mphamvu mu 50-ohm transmission system. Mapangidwe a Microstrip kapena stripline amagwiritsidwa ntchito, ndikukonzedwa kuti azigwira bwino ntchito.

Tithanso kusintha RF Fyuluta malinga ndi zomwe mukufuna. Mutha kulowa patsamba losintha kuti mupereke zomwe mukufuna.

https://www.keenlion.com/customization/

Malingaliro a kampani Sichuan Keenlion Microwave Technology Co., Ltd.

Imelo:

sales@keenlion.com

tom@keenlion.com