Nkhani

Kodi ndi chiyaniFyuluta ya RF?

Fyuluta ya ma frequency a wailesi ndi gawo lofunika kwambiri paukadaulo wopanda zingwe. Imagwiritsidwa ntchito limodzi ndi wolandila wailesi kusefa ma frequency ena osafunikira ndipo imalandira ma frequency olondola okha. Ma RF filters apangidwa kuti azigwira ntchito mosavuta mu ma frequency kuyambira ma frequency apakati mpaka ma frequency okwera kwambiri (monga megahertz ndi gigahertz). Chifukwa cha mawonekedwe ake ogwirira ntchito, imagwiritsidwa ntchito kwambiri m'ma radio station, ma wireless communications, TV ndi zida zina.

Kawirikawiri, zosefera zambiri za RF zimapangidwa ndi ma resonator ogwirizana, ndipo zinthu zomwe zili bwino zimatha kudziwa kuchuluka kwa zosefera mu RF. Malinga ndi momwe zimagwiritsidwira ntchito komanso kukula kwa zida zopanda zingwe, pali mitundu yambiri ya zosefera, monga sefa ya cavity, fyuluta ya plane, fyuluta ya electroacoustic, fyuluta ya dielectric, fyuluta ya coaxial (yosatengera chingwe cha coaxial), ndi zina zotero.

Mitundu Yoyambira ya Fyuluta ya Ma Radio Frequency

Fyuluta ya RF ndi dera lapadera lomwe limalola ma siginecha olondola kudutsa pamene akuchotsa ma siginecha osafunikira. Ponena za topology ya fyuluta, pali mitundu inayi yoyambira ya fyuluta ya RF, yomwe ndi fyuluta yodutsa kwambiri, fyuluta yodutsa pang'ono, fyuluta yodutsa pang'ono ndi fyuluta yoyimitsa pang'ono.

Fyuluta Yotsika Kwambiri:

Monga momwe dzinalo likusonyezera, fyuluta yotsika mtengo ndi fyuluta yomwe imalola ma frequency otsika kudutsa ndikuchepetsa ma frequency ena a chizindikiro nthawi imodzi. Chizindikiro chikadutsa mu bandpass, kuchepetsa ma frequency ake kumatsimikiziridwa ndi zinthu zambiri, monga topology ya fyuluta, kapangidwe kake ndi mtundu wa zigawo zake. Kuphatikiza apo, topology ya fyuluta imazindikiranso liwiro la kusintha kwa fyuluta kuchokera ku passband kuti ikwaniritse kukanikiza kwake komaliza.

Zosefera zotsika mtengo zimapezeka m'njira zosiyanasiyana. Ntchito yayikulu ya fyuluta ndikuletsa kuyanjana kwa RF amplifier. Izi ndizofunikira chifukwa zimathandiza kupewa kusokoneza kosafunikira kuchokera ku magulu osiyanasiyana otumizira. Choyamba, zosefera zotsika mtengo zimagwiritsidwa ntchito pa mapulogalamu amawu ndikusefa phokoso kuchokera ku dera lililonse lakunja. Chizindikiro chapamwamba kwambiri chitasefedwa, ma frequency a chizindikiro omwe apezeka amakhala ndi khalidwe lomveka bwino.

Fyuluta Yodutsa Kwambiri:

Mosiyana ndi fyuluta yotsika mtengo, fyuluta yotsika mtengo imalola ma signal okwera mtengo okha kuti adutse. Ndipotu, fyuluta yotsika mtengo ndi fyuluta yotsika mtengo zimathandizana kwambiri, chifukwa ma fyuluta onse awiri angagwiritsidwe ntchito pamodzi kupanga fyuluta yotsika mtengo. Kapangidwe ka fyuluta yotsika mtengo ndi kolunjika ndipo kamachepetsa ma frequency omwe ali pansi pa malire.

Kawirikawiri, zosefera zamagetsi zodutsa kwambiri zimagwiritsidwa ntchito m'makina amawu, momwe ma frequency onse otsika amasefedwa. Kuphatikiza apo, imagwiritsidwanso ntchito kuchotsa ma speaker ang'onoang'ono ndi ma bass nthawi zambiri; zosefera izi zimapangidwa makamaka m'ma speaker. Komabe, ngati pali pulojekiti iliyonse ya DIY, fyuluta yodutsa kwambiri imatha kulumikizidwa mosavuta ku makinawo.

Zosefera za Band Pass:

Fyuluta ya band-pass ndi dera lomwe limalola ma signal ochokera kuma frequency awiri osiyana kudutsa ndikuchepetsa ma signal omwe sali mkati mwa mulingo woyenera. Ma filter ambiri a band-pass amadalira gwero lililonse lamagetsi lakunja ndipo amagwiritsa ntchito zigawo zogwira ntchito, monga ma circuits ophatikizidwa ndi ma transistors. Mtundu uwu wa fyuluta umatchedwa active band-pass filter. Kumbali ina, ma filter ena a band-pass sagwiritsa ntchito magetsi akunja ndipo amadalira kwambiri zigawo zogwira ntchito, zomwe ndi ma inductors ndi ma capacitor. Ma filter amenewa amatchedwa ma filter a band-pass.

Zosefera za Bandpass zimagwiritsidwa ntchito kwambiri mu ma receiver ndi ma transmitter opanda zingwe. Ntchito yake yayikulu mu transmitter ndikuchepetsa bandwidth ya chizindikiro chotulutsa kukhala chocheperako, kuti deta yofunikira ifalitsidwe pa liwiro ndi mawonekedwe ofunikira. Wolandila akakhudzidwa, fyuluta ya Bandpass imangolola kuzindikira kapena kumva kuchuluka kwa ma frequency ofunikira, pomwe ikudula zizindikiro zina kuchokera ku ma frequency osafunikira.

Mwachidule, fyuluta ya band-pass ikapangidwa, imatha kukulitsa bwino mtundu wa chizindikiro ndikuchepetsa mpikisano kapena kusokonezana pakati pa zizindikiro.

Kukana kwa Band:

Nthawi zina amatchedwa band stop filter, band stop filter ndi fyuluta yomwe imalola ma frequency ambiri kudutsa popanda kusintha. Komabe, imachepetsa ma frequency pansi pa mtunda winawake. Ntchito yake ndi yosiyana kwambiri ndi ya band-pass filter. Mwachidule, ntchito yake ndikudutsa ma frequency kuchokera pa zero kupita ku cut-off point yoyamba ya frequency. Pakati pake, imadutsa ma frequency onse pamwamba pa cut-off point yachiwiri ya frequency. Komabe, imakana kapena kuletsa ma frequency ena onse pakati pa mfundo ziwirizi.

Mwachidule, fyuluta ndi chinthu chomwe chimalola zizindikiro kudutsa pogwiritsa ntchito passband. Mwa kuyankhula kwina, stopband mu fyuluta ndi pomwe ma frequency ena amakanidwa ndi fyuluta iliyonse. Kaya ndi high pass, low pass kapena band pass, fyuluta yoyenera ndi fyuluta yopanda kutayika mu passband. Komabe, kwenikweni, palibe fyuluta yoyenera chifukwa bandpass idzataya ma frequency ena ndipo n'zosatheka kukwaniritsa kuponderezedwa kosatha pamene stopband yafika.

N’chifukwa chiyani ma Radio Frequency Filters ndi Ofunika Kwambiri?

Ma RF filters amagwiritsidwa ntchito pogawa ma signal frequency, koma n’chiyani chimawapangitsa kukhala ofunikira kwambiri? Mwachidule, ma RF filters amatha kusefa phokoso lomwe lingakhudze ubwino kapena magwiridwe antchito a njira iliyonse yolumikizirana kapena kuchepetsa kusokoneza kwa ma signal akunja. Kusowa kwa RF filter yoyenera kungawononge kutumiza kwa ma signal frequency, ndipo pamapeto pake kungawononge njira yolumikizirana.

Chifukwa chake, zosefera za RF zimagwira ntchito yofunika kwambiri mu makina olumikizirana opanda zingwe (monga satellite, radar, makina opanda zingwe oyenda ndi mafoni, ndi zina zotero). Ponena za kayendetsedwe ka magalimoto opanda anthu (UAS), kufunika kwa zosefera za RF n'kodziwikiratu. Kusowa kwa makina oyenera osefera kudzakhudza UAS m'njira zambiri, monga:

Kulumikizana kungachepe chifukwa cha kusokonezedwa komwe kumachitika chifukwa cha zinthu zachilengedwe zakunja. Kuphatikiza apo, kupezeka kwa zizindikiro zambiri za RF mumlengalenga kungayambitse kuwonongeka kwakukulu kwa njira yolumikizirana ya UAV. Zizindikiro zoyipa kuchokera kumapulatifomu ena zimaphatikizapo koma sizimangokhala pa:; Ntchito yayikulu ya chizindikiro cha Wi Fi ndi machitidwe ena olumikizirana omwe amagwira ntchito mkati mwa UAS.

Kusokonezeka kwa machitidwe ena olumikizirana kudzasokoneza njira yolumikizirana ya UAS, motero kuchepetsa kapena kuchepetsa kuchuluka kwa kulumikizana kwa machitidwe otere.

Kusokoneza kudzakhudzanso kulandira chizindikiro cha GPS cha UAS; Izi zimawonjezera kuthekera kwa zolakwika pakutsata GPS. Pazovuta kwambiri, izi zitha kupangitsa kuti kulandira chizindikiro cha GPS kutayike kwathunthu.

Ndi fyuluta yoyenera ya RF, kusokoneza kwakunja ndi kusokoneza kwa zizindikiro zomwe zimapangidwa ndi makina olumikizirana omwe ali pafupi zitha kuthetsedwa mosavuta. Izi zimasunga mtundu wa ma frequency a chizindikiro omwe mukufuna pomwe zimasefa mosavuta ma frequency onse osafunikira a chizindikiro.

Kuphatikiza apo, zosefera za RF zimagwiranso ntchito yofunika kwambiri pa malo ogwiritsira ntchito mafoni. Ponena za mafoni, amafunika kuchuluka kwa mabatani amafupipafupi kuti agwire ntchito bwino. Chifukwa cha kusowa kwa zosefera za RF zoyenera, mabatani osiyanasiyana amafupipafupi sadzakhalapo nthawi imodzi, zomwe zikutanthauza kuti mabatani ena amafupipafupi adzakanidwa, monga Global Navigation Satellite System (GNSS), chitetezo cha anthu, Wi Fi, ndi zina zotero. Apa, zosefera za RF zimagwira ntchito yofunika kwambiri polola mabatani onse kukhalapo nthawi imodzi.

Kawirikawiri, zosefera zimakhala zopepuka ndipo zimathandiza kukonza magwiridwe antchito a ma signal frequency. Ngati RF fyuluta sipereka magwiridwe antchito omwe mukufuna, ndiye kuti mutha kufufuza njira zina zosiyanasiyana, imodzi mwa izo ndikuwonjezera ma amplifiers ku kapangidwe kanu. Kuchokera ku grid amplifier kupita ku RF power amplifier ina iliyonse, mutha kusintha ma signal frequency otsika kukhala ma signal frequency apamwamba; Kuti muwongolere magwiridwe antchito onse a RF design.

Si Chuan Keenlion Microwave ndi makina ambiri osankhidwa m'makonzedwe a narrowband ndi broadband, okhala ndi ma frequency kuyambira 0.5 mpaka 50 GHz. Amapangidwira kuti azitha kugwiritsa ntchito mphamvu yolowera ya ma watts 10 mpaka 30 mu makina otumizira mawaya 50. Mapangidwe a microstrip kapena stripline amagwiritsidwa ntchito, ndipo amakonzedwa kuti agwire ntchito bwino kwambiri.

Tikhozanso kusintha RF Filter malinga ndi zomwe mukufuna. Mutha kulowa patsamba losinthira kuti mupereke zofunikira zomwe mukufuna.

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

Sichuan Keenlion Microwave Technology Co., Ltd.

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