1. Faa'iidada anteenada
Anteenofaa'iidada waxaa loola jeedaa saamiga cufnaanta awoodda shucaaca ee anteenada jiho gaar ah oo loo eegayo cufnaanta awoodda shucaaca ee anteenada tixraaca (badanaa isha barta shucaaca ee ku habboon) isla awoodda gelinta. Xuduudaha matalaya faa'iidada anteenada waa dBd iyo dBi.
Macnaha jireed ee faa'iidada waxaa loo fahmi karaa sidan soo socota: si loo soo saaro calaamad cabbir gaar ah meel gaar ah masaafo gaar ah, haddii ilo dhibic aan jiho ahayn oo ku habboon loo isticmaalo anteenada gudbinta, awood gelin ah oo 100W ah ayaa loo baahan yahay, halka marka anteeno jiho leh oo leh faa'iido G=13dB (20 jeer) loo isticmaalo anteenada gudbinta, awoodda gelintu waa 100/20=5W oo keliya. Si kale haddii loo dhigo, faa'iidada anteenada, marka la eego saameynta shucaaca ee jihada ugu badan ee shucaaca, waa tirada awoodda gelineed ee la xoojiyay marka la barbar dhigo isha dhibicda ugu habboon ee aan jiho lahayn.
Faa'iidada anteenada waxaa loo isticmaalaa in lagu cabbiro awoodda anteenada ay u dirto una hesho calaamadaha jiho gaar ah waana mid ka mid ah xuduudaha ugu muhiimsan ee lagu dooranayo anteenada. Faa'iidada waxay si dhow ula xiriirtaa qaabka anteenada. Inta uu yar yahay laf-dhabarta ugu weyn ee qaabka iyo inta uu yar yahay laf-dhabarta dhinaca, ayaa faa'iidada sare u kacda. Xiriirka ka dhexeeya ballaca laf-dhabarta ugu weyn iyo faa'iidada anteenada waxaa lagu muujiyay Jaantuska 1-1.
Jaantuska 1-1
Isla xaaladahaas oo kale, kororka faa'iidada ayaa sii kordhaya hirarka raadiyaha. Si kastaba ha ahaatee, hirgelinta dhabta ah, faa'iidada anteenada waa in si macquul ah loo doortaa iyadoo lagu saleynayo isku-dhafka iftiinka iyo aagga bartilmaameedka daboolida. Tusaale ahaan, marka masaafada daboolida ay dhow tahay, si loo hubiyo saameynta daboolida ee meesha u dhow, waa in la doortaa anteeno faa'iido yar leh oo leh lobe toosan oo ballaaran.
2. Fikradaha la xiriira
·dBd: marka loo eego faa'iidada anteenada isku-dhafan,
·dBi: marka loo eego faa'iidada anteenada isha dhibicda, shucaaca dhammaan jihooyinka waa isku mid. dBi=dBd+2.15
Xagasha lobe: xagasha ay samaysay 3dB oo ka hooseysa meesha ugu sarreysa lobe-ka ugu weyn ee qaabka anteenada, fadlan tixraac ballaca lobe-ka si aad u hesho faahfaahin, isha barta shucaaca ee ugu habboon: waxaa loola jeedaa anteeno isotropic ah oo ku habboon, taas oo ah, isha shucaaca ee fudud, oo leh astaamo isku mid ah oo shucaac ah dhammaan jihooyinka hawada sare.
3. Qaaciddada xisaabinta
Kororka anteenada = 10lg (cufnaanta awoodda shucaaca anteenada/cufnaanta awoodda shucaaca anteenada)
Si aad wax badan uga barato anteenooyinka, fadlan booqo:
Waqtiga boostada: Diseembar-06-2024
