Mau oyamba a FM Radio Dipole Antenna | FMUSER BROADCAST

Pakuwulutsa pawayilesi, mutha kuwona izi FM dipole antenna imatengedwa m'zida zambiri. Itha kugwiritsidwa ntchito yokha kapena kuphatikizidwa ndi tinyanga zina za FM kupanga gulu la tinyanga. Titha kunena kuti mlongoti wa dipole wa FM ndi imodzi mwamitundu yofunika kwambiri ya mlongoti wa FM. Chifukwa chake, ndikofunikira kwambiri kukhala ndi chidziwitso choyambirira cha mlongoti wa dipole wa FM. Nkhaniyi ifotokoza zoyambira za mlongoti wa dipole wa FM kuyambira pa kukhazikitsidwa kwa mlongoti wa dipole wa FM, mfundo yogwira ntchito ya mlongoti wa dipole wa FM, mtundu wa dipole antenna, ndi momwe mungasankhire mlongoti wabwino kwambiri wa FM.

  

Zochititsa chidwi za FM Dipole Antenna

Pankhani yamawayilesi ndi matelefoni, mlongoti wawailesi ya FM ndi mtundu wogwiritsidwa ntchito kwambiri komanso wosavuta wa mlongoti wa FM. Ambiri aiwo amawoneka ngati mawu oti "T", omwe amapangidwa ndi ma conductor awiri okhala ndi kutalika kofanana komanso olumikizidwa kumapeto mpaka kumapeto. Ndipo amalumikizidwa ndi zingwe pakati pa dipole antenna. Mlongoti wa dipole wa FM utha kugwiritsidwa ntchito pawokha kapena kupanga mlongoti wovuta kwambiri (monga Yagi antenna). 

  

FM radio dipole antenna amatha kugwira ntchito mu HF, VHF, ndi UHF ya frequency band. Nthawi zambiri, adzaphatikizidwa ndi zida zina zamagetsi kuti apange gawo lathunthu. Mwachitsanzo, mlongoti wa dipole wa FM udzalumikizidwa ndi chowulutsira cha FM kuti apange zida zonse zotumizira RF; Nthawi yomweyo, monga wolandila, imatha kulumikizidwa ndi olandila monga wailesi kuti apange zida zonse zolandirira za RF.

  

Kodi FM Dipole Antenna imagwira ntchito bwanji?

Tikudziwa kale kuti dzina loti "dipole" limatanthauza kuti mlongoti uli ndi mitengo iwiri, kapena imakhala ndi ma conductor awiri. Mlongoti wa dipole wa FM ungagwiritsidwe ntchito ngati mlongoti wotumizira kapena kulandira mlongoti. Iwo amagwira ntchito motere:

   

  • Kwa mlongoti wa dipole, pamene mlongoti wa dipole wa FM ulandira chizindikiro chamagetsi, magetsi akuyenda muzitsulo ziwiri za dipole antenna ya FM, ndipo zamakono ndi magetsi zidzatulutsa mafunde a electromagnetic, ndiko kuti, ma wailesi ndikuwunikira kunja.

  • Pakulandila dipole antenna, pomwe mlongoti wa dipole wa FM ulandila mawayilesi awa, mafunde amagetsi mu FM dipole antenna conductor apanga ma siginecha amagetsi, kuwatumiza ku zida zolandirira ndikuzisintha kukhala zotulutsa mawu.

 

 

Amagwira ntchito m'njira zosiyanasiyana, mfundo zawo ndizofanana, koma njira yosinthira chizindikiro imasinthidwa.

4 Mitundu ya FM Dipole Antenna
 

Ma antennas a dipole a FM amatha kugawidwa m'mitundu inayi, ali ndi mawonekedwe osiyanasiyana.

  

Half-wave dipole antenna
 

The half-wave dipole antenna ndiyo yomwe imagwiritsidwa ntchito kwambiri. Amapangidwa ndi ma conductor awiri omwe ali ndi kutalika kwa gawo limodzi mwa magawo atatu a kutalika kwa mawonekedwe olumikizidwa kumapeto. Kutalika kwa mlongoti ndi wamfupi pang'ono kuposa magetsi theka wavelength mu malo ufulu. Theka-wave dipoles nthawi zambiri amadyetsedwa pakati. Izi zimapereka malo osavuta kuyang'anira otsika a impedance feed point.

  

Multi half-wave dipole antenna
 

N'zothekanso ngati mukufuna kugwiritsa ntchito angapo (nthawi zambiri kuposa 3, ndi nambala yosamvetseka) theka-wave dipole tinyanga. Gulu la tinyangali limatchedwa Multi half-wave dipole antenna. Ngakhale ma radiation ake ndi osiyana kwambiri ndi antenna ya theka-wave dipole antenna, imagwirabe ntchito bwino. Mofananamo, mtundu uwu wa antenna nthawi zambiri umadyetsedwa pakati, zomwe zimaperekanso kuperewera kwa chakudya chochepa.

  

Mlongoti wa dipole wopindidwa
 

Monga momwe dzinalo likusonyezera, mawonekedwe a FM dipole antenna amapindidwa mmbuyo. Ikusungabe kutalika pakati pa malekezero awiri a theka-wavelength, imagwiritsa ntchito ma conductor owonjezera kulumikiza mbali ziwirizo. Mlongoti wopindidwa woterewu wa dipole ukhoza kupereka kusokoneza kwakukulu kwa chakudya komanso bandwidth yotakata.

  

Mlongoti wa dipole wamfupi
 

Mlongoti wachidule wa dipole ndi mlongoti womwe utali wake ndi waufupi kwambiri kuposa wa theka la mafunde, ndipo kutalika kwa mlongoti kumafunika kukhala osachepera 1/10 ya kutalika kwake. Mlongoti wachidule wa dipole uli ndi zabwino zake zazitali zazifupi za mlongoti komanso kusokoneza kwakukulu kwa chakudya. Koma panthawi imodzimodziyo, chifukwa cha kukana kwake kwakukulu, kugwira ntchito kwake kumakhala kochepa kwambiri kusiyana ndi mlongoti wamba wa dipole, ndipo mphamvu zake zambiri zimatayika ngati kutentha.

  

Malinga ndi zofunikira zosiyanasiyana zamawayilesi, ma antenna osiyanasiyana a FM dipole ndi osankha kuti akwaniritse zosowa zosiyanasiyana zakuwulutsa.

 

Momwe Mungasankhire Antenna Yabwino Kwambiri ya FM Dipole?
 

Muyenera kuganizira izi posankha antenna ya FM dipole kuti mupange wayilesi yanu.

  

Nthawi Yogwira Ntchito
 

Kugwira ntchito kwa mlongoti wa dipole wa FM womwe mumagwiritsa ntchito kuyenera kufanana ndi kuchuluka kwa ma transmitter a FM, apo ayi, mlongoti wa dipole wa FM sungathe kufalitsa ma wayilesi nthawi zonse, zomwe zingawononge zida zowulutsira.

  

Zokwanira pazipita mphamvu zonyamula
 

Chilichonse chowulutsa pawailesi ya FM chimakhala ndi mphamvu zonyamula kwambiri. Ngati mlongoti wa dipole wa FM sungathe kupirira mphamvu zotumizira, mlongoti wa FM sungathe kugwira ntchito bwino.

  

Mtengo wapatali wa magawo VSWR
 

VSWR imawonetsa magwiridwe antchito a mlongoti. Mwambiri, VSWR pansi pa 1.5 ndiyovomerezeka. Mafunde okwera kwambiri amawononga chotumizira ndikuwonjezera mtengo wokonza.

    

Kuwongolera
  

Tinyanga za wailesi ya FM zimagawidwa m'mitundu iwiri: omnidirectional ndi directional. Imatsimikizira mayendedwe omwe amawunikira kwambiri. Mlongoti wa dipole wa FM ndi wa amnidirectional antenna. Ngati mukufuna mlongoti wolunjika, muyenera kuwonjezera chowunikira.

   

Izi ndizinthu zazikulu zomwe ziyenera kuganiziridwa posankha mlongoti wa dipole wa FM. Ngati simukumvetsabe, chonde tiuzeni zosowa zanu, ndipo tidzakusinthirani njira yaukadaulo. Chonde khalani omasuka kulumikizana nafe!

  

   

FAQ
 
Momwe mungawerengere kutalika kwa mlongoti wa dipole wa FM?

Ma antenna ena a dipole amatha kusintha ma frequency a ntchito ya dipole antenna posintha kutalika kwa kondakitala. Kutalika kwa kondakitala kutha kuwerengedwa pogwiritsa ntchito njira iyi: L = 468 / F. L ndi kutalika kwa mlongoti, mumapazi. F ndiye ma frequency ofunikira, mu MHz.

  

Kodi ndiyenera kusamala chiyani ndikayika mlongoti wa dipole wa FM?

Samalani mfundo zitatu mukakhazikitsa mlongoti wa dipole wa FM:

1. Ikani mlongoti wanu wa dipole mmwamba momwe mungathere popanda zopinga;

2. Musalole mlongoti kukhudza chilichonse;

3. Konzani mlongoti wanu ndikuyiteteza kumadzi ndi mphezi.

  

Kodi mitundu yosiyanasiyana ya tinyanga za FM dipole ndi iti?

Pali mitundu inayi yayikulu ya tinyanga za dipole za FM:

  • Half-wave dipole antenna
  • Multi half-wave dipole antenna
  • Mlongoti wa dipole wopindidwa
  • dipole yayifupi 

   

Ndi mtundu wanji wa feeder wabwino kwambiri wa dipole antenna? Ndi njira iti yodyetsera yomwe ili yabwino kwa mlongoti wa dipole?

Mlongoti wa dipole ndi mlongoti wokhazikika, chifukwa chake muyenera kugwiritsa ntchito chakudya choyenera, chomwe ndi chowona m'malingaliro. Komabe, chakudya chopatsa thanzi sichimagwiritsidwa ntchito kawirikawiri chifukwa ndikovuta kugwira ntchito m'nyumba ndipo chimagwira ntchito ku gulu la HF. Zingwe zambiri za coaxial zokhala ndi balun zimagwiritsidwa ntchito.

  

Kutsiliza
 

Aliyense atha kugula mlongoti wa dipole wa FM ndikukhazikitsa wailesi yawoyawo. Zomwe amafunikira ndi zida zoyenera komanso ziphaso zoyenera. Ngati mulinso ndi lingaliro loyambitsa wayilesi yanu, mungafunike wothandizira odalirika ngati FMUSER, katswiri wothandizira zida zowulutsira pawayilesi. Titha kukupatsirani zida zoulutsira pawayilesi zapamwamba komanso zotsika mtengo komanso zothetsera, ndikuthandizani kumaliza ntchito yonse yomanga ndi kukhazikitsa zidazo mpaka zida zonse zitha kugwira ntchito moyenera. Ngati mukufuna kugula mlongoti wa dipole wa FM ndikukhazikitsa wayilesi yanu, chonde omasuka kutilumikizani. Tonse ndife makutu!

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