Bandwidth waa halbeeg kale oo anteeno aasaasi ah. Bandwidth wuxuu qeexayaa inta jeer ee ay anteenadu si sax ah u iftiimin karto ama u heli karto tamar. Caadi ahaan, xawaaraha loo baahan yahay waa mid ka mid ah halbeegyada loo isticmaalo xulashada nooca anteenada. Tusaale ahaan, waxaa jira noocyo badan oo anteenooyin ah oo leh xajmigoodu aad u yar yahay. Anteenooyinkan looma isticmaali karo codsiyada ballaadhan.
Bandwidth waxaa inta badan lagu soo xigtay marka la eego saamiga taagan danab (VSWR). Tusaale ahaan, anteenada waxaa lagu tilmaami karaa inay leedahay VSWR <1.5 in ka badan 100-400 MHz. Bayaanka ayaa sheegaya in isugeynta milicsiga ay ka yar tahay 0.2 marka loo eego inta jeer ee la soo xigtay. Sidaa darteed, awoodda la keeno anteenada, kaliya 4% awoodda ayaa dib ugu soo celinaysa gudbiyaha. Intaa waxaa dheer, soo noqoshada khasaaraha S11 = 20 * LOG10 (0.2) = 13.98 decibels.
Fadlan ogow in kuwa kore aysan macnaheedu ahayn in 96% awoodda la geeyo anteenada qaab shucaaca korantada ee faafin. Waa in la texgeliyaa luminta awoodda.
Intaa waxaa dheer, qaabka shucaaca ayaa ku kala duwanaan doona inta jeer. Guud ahaan, qaabka qaabka shucaaca si weyn uma beddelo inta jeer.
Waxa kale oo laga yaabaa inay jiraan heerar kale oo loo isticmaalo in lagu qeexo baaxadda baaxadda. Tani waxay noqon kartaa kala-soocida ilaa xad go'an. Tusaale ahaan, anteeno wareeg ah ayaa lagu tilmaami karaa inay leedahay saamiga axial ee <3 dB laga bilaabo 1.4-1.6 GHz (in ka yar 3 dB). Kala duwanaanshahan dejin bandwidth polarization waa ku dhawaad anteenooyinkooda wareegaysan.
Bandwidth-ka waxaa inta badan lagu qeexaa bandwidth-jajab ah (FBW). FBW waa saamiga kala duwanaanshaha soo noqnoqda oo loo qaybiyo inta jeer ee xarunta (soo noqnoqoshada ugu badan laga jaray inta jeer ee ugu yar). "Q" ee anteenada waxay sidoo kale la xiriirtaa bandwidth (Q sare waxay ka dhigan tahay xajmiga xajmiga hoose iyo lid ku ah).
Si loo bixiyo tusaalooyin la taaban karo oo xajmiyeedka, halkan waxaa ku yaal shax baaxad leh oo loogu talagalay noocyada anteenada caadiga ah. Tani waxay ka jawaabi doontaa su'aalaha, "Waa maxay bandwidth antenna dipole?" iyo "Antendee ayaa leh bandwidth sare - balastar ama anteeno helix ah?". Marka la barbardhigo, waxaan leenahay anteenooyin leh inta jeer ee 1 GHz (gigahertz) midkiiba.
Baadhitaano badan oo anteenooyinkooda caadiga ah.
Sida aad ka arki karto miiska, bandwidth-ka anteenadu aad ayey u kala duwanaan kartaa. Anteenooyinka balaastikada ah (microstrip) aad bay u hooseeyaan, halka anteenooyinka helical ay leeyihiin xajmiyeed aad u weyn.
Waqtiga boostada: Nov-24-2023
