1. Anteenada faa'iido
Anteenadafaa'iidada waxaa loola jeedaa saamiga cufnaanta awoodda shucaaca anteenada jihada cayiman ee cufnaanta tamarta shucaaca ee anteenada tixraaca (sida caadiga ah isha isha shucaaca ku habboon) isla awoodda wax gelinta. Halbeegyada matala faa'iidada anteenada waa dBd iyo dBi.
Macnaha jireed ee faa'iidada waxaa loo fahmi karaa sida soo socota: si loo soo saaro calaamad cabbir gaar ah meel gaar ah oo fogaan gaar ah, haddii isha ku habboon ee aan jihada ahayn loo isticmaalo anteenaha gudbinta, awoodda wax gelinta ee 100W ayaa loo baahan yahay, halka marka anteenaha jihada ah ee faa'iido u leh G = 13dB (20 jeer) loo isticmaalo anteenaha gudbinta, awoodda wax-gelinta waa 100W oo keliya. Si kale haddii loo dhigo, faa'iidada anteenada, marka la eego saamaynta shucaaca ee jihada ugu badan ee shucaaca, waa dhufashada awoodda wax gelinta ee la xoojiyay marka la barbar dhigo isha dhibicda ugu habboon ee aan jihayn.
Faa'iidada anteenada waxaa loo isticmaalaa in lagu cabbiro awoodda anteenadu u dirto oo ay ku hesho calaamadaha jihada gaar ah waana mid ka mid ah halbeegyada ugu muhiimsan ee xulashada anteenada. Faa'iidada waxay si dhow ula xiriirtaa qaabka anteenada. Sida cidhiidhiga ah ee lafaha ugu weyn ee qaabka iyo inta yar ee lafaha dhinaca, ayaa kor u kacaya faa'iidada. Xidhiidhka ka dhexeeya ballaca laf-dhabarka weyn iyo faa'iidada anteenada ayaa lagu muujiyey sawirka 1-1.
Jaantuska 1-1
Isla shuruudo la mid ah, inta ay korodho faa'iidada, ayaa sii fogaanaysa hirarka raadiyaha. Si kastaba ha ahaatee, hirgelinta dhabta ah, faa'iidada anteenada waa in si macquul ah loo doortaa iyadoo lagu saleynayo isbarbardhigga iftiinka iyo aagga bartilmaameedka. Tusaale ahaan, marka masaafada daboolidu ay dhowdahay, si loo hubiyo saamaynta daboolka ee barta dhow, anteeno faa'iido hoose leh oo leh lafo toosan oo ballaaran waa in la doortaa.
2. Fikradaha la xidhiidha
dBd: marka loo eego faa'iidada anteenada qaabaysan summaysan,
dBi: marka loo eego faa'iidada anteenada isha dhibicda, shucaaca jihooyinka oo dhan waa lebis. dBi=dBd+2.15
Xagasha lobe: xagal ay samaysay 3dB oo ka hooseysa qaybta ugu sarreysa ee lobe ee qaabka anteenada, fadlan tixraac ballaca lobe si aad faahfaahin u hesho, isha isha shucaaca ugu habboon: waxay tilmaamaysaa anteeno isotropic ku habboon, taas oo ah, isha shucaaca dhibicda fudud, oo leh astaamo shucaac isku mid ah dhammaan jihooyinka meel bannaan.
3. formula xisaabinta
Faa'iidada anteenada = 10lg (cufnaanta awoodda shucaaca anteenada / cufnaanta tamarta shucaaca anteenada)
Si aad wax badan uga ogaato anteenooyinka, fadlan booqo:
Waqtiga boostada: Dec-06-2024
