Khaolong e fetileng, re buisane ka mekhoa ea mahlaseli. Ho sekaseka mahlaseli a antenna hamolemo, ho hlokahala ntlha ea litšupiso. Mahlaseli a antenna ea isotropic a phetha karolo ena.
Tlhaloso
Mahlasedi a Isotropic a bolela mahlaseli a tsoang mohloling oa ntlha a jalang ka ho lekana mahlakoreng 'ohle, ka matla a tšoanang ho sa tsotelehe tataiso ea tekanyo. Ntlafatso ea mohlala oa mahlaseli a antenna e lula e hlahlojoa ho sebelisoa mahlaseli a isotropic e le referense. Haeba mahlaseli a lekana mahlakoreng 'ohle, a bitsoa mahlaseli a isotropic.
•Mohloli oa ntlha ke mohlala oa radiator ea isotropic. Leha ho le joalo, mahlaseli a joalo a isotropic a batla a sa khonehe ho a fihlela, hobane antenna efe kapa efe e ntša matla a eona ka tataiso e itseng.
•Mahlaseli a isotropic a tšoana hantle le mahlaseli a omnidirectional.
•Ha e shejwa ka 3D, e na le paterone e bōpehileng joaloka donut; ha e shejwa ka 2D, e na le paterone ea figure-eight.
Setšoantšo se kaholimo se bontša paterone ea mahlaseli a radiator ea isotropic (kapa ea omnidirectional). Setšoantšo sa 1 se hlahisa paterone e bōpehileng joaloka donut ho 3D, ha Setšoantšo sa 2 se bontša paterone ea palo-borobeli ho 2D.
Phaello
Radiator ea isotropic e na le phaello ea bonngoe, ho bolelang hore ntlha ea phaello ke 1 mahlakoreng 'ohle. Ha e hlahisoa ka li-decibel (dB), sena se bitsoa phaello ea 0 dB (tahlehelo ea lefela).
Matla a Lekanang a Isotropically Radiated (EIRP)
Ho ya ka tlhaloso e tloaelehileng, matla a ntshitsweng ke antenna ya isotropic ho hlahisa bongata ba matla a tlhōrō bo bonwang ka lehlakoreng la keketseho e kgolo ya antenna a bitswa Equivalent Isotropically Radiated Power.
Ha matla a kganyang a antenna a tsepamisitsoe ka lehlakoreng le leng kapa ka lehlakoreng le itseng, mme mahlaseli a ka lehlakoreng leo a lekana le matla a kganyang a isotropic a antenna, mahlaseli ana a bitswa EIRP.
Phaello
Leha mahlaseli a isotropic e le feela khopolo-taba, a emela mahlaseli a matle ka ho fetisisa ao antenna e ka a fihlelang. Antenna e joalo e na le keketseho ea 3 dBi, moo 3 dB e tsamaellanang le ntlha ea 2, 'me "i" e bontša bongata bo amanang le boemo ba isotropic.
Haeba mahlaseli a lebisitsoe ka hare ho sekhutlo se itseng, EIRP e eketseha ha antenna e ntse e eketseha. Phaello ea antenna e finyelloa hamolemo ka ho tsepamisa mahlaseli a eona ka lehlakoreng le le leng.
Matla a Mahlasedi a Sebetsang (ERP)
Haeba matla a kganyang a balwa ho latela antenna ya dipole ya halofo ya leqhubu ho ena le antenna ya isotropic, e bitswa Effective Radiated Power (ERP).
ERP(dBW)=EIRP(dBW)−2.15 dBi
Haeba EIRP e tsebahala, ERP e ka balwa ho sebediswa foromo e fanweng ka hodimo.
Ho ithuta haholoanyane ka li-antenna, ka kopo etela:
Nako ea poso: Mmesa-17-2026
