- Kedu uru nke antenna?
Antennauru na-ezo aka na oke nke njupụta ike nke mgbaàmà nke antenna n'ezie na nkeji radiating zuru oke n'otu ebe n'ime oghere n'okpuru ọnọdụ nke ike ntinye nhata. Ọ na-akọwa n'ụzọ nhata nke antenna na-agbasa ike ntinye n'ụzọ siri ike. O doro anya na uru ahụ nwere njikọ chiri anya na ụkpụrụ antenna. Ka isi lobe nke ụkpụrụ ahụ dị warara na obere lobe akụkụ ahụ, otú ahụ ka uru ahụ dị elu. A na-eji uru antenna atụ ikike nke antenna izipu na ịnata akara n'otu ntụziaka kpọmkwem. Ọ bụ otu n'ime paramita kachasị mkpa maka ịhọrọ antenna ọdụ isi.
N'ikwu ya n'ozuzu, mmezi nke uru dabere na ibelata obosara nke radieshon kwụ ọtọ ebe ọ na-ejigide arụmọrụ radieshon omnidirectional na mbara igwe kwụ ọtọ. Uru antenna dị oke mkpa maka ịdị mma ọrụ nke sistemụ nkwukọrịta mkpanaka n'ihi na ọ na-ekpebi ọkwa mgbaàmà na nsọtụ sel. Ịbawanye uru nwere ike ime ka mkpuchi nke netwọk dịkwuo elu n'otu ntụziaka, ma ọ bụ mụbaa oke uru n'ime oke ụfọdụ. Sistemụ sel ọ bụla bụ usoro ụzọ abụọ. Ịbawanye uru nke antenna nwere ike ibelata oke mmefu ego uru nke sistemụ ụzọ abụọ n'otu oge. Na mgbakwunye, paramita ndị na-anọchite anya uru antenna bụ dBd na dBi. dBi bụ uru ma e jiri ya tụnyere antenna isi mmalite, radieshon n'akụkụ niile dịkwa otu; dBd dị n'ihe metụtara uru nke antenna array symmetrical dBi=dBd+2.15. N'okpuru otu ọnọdụ ahụ, ka uru ahụ dị elu, otú ahụ ka ogologo anya ebili mmiri redio nwere ike ịgbasa.
Eserese uru nke antenna
Mgbe ị na-ahọrọ uru antenna, a ga-ekpebi ya dabere na mkpa nke ngwa ahụ kpọmkwem.
- Nkwukọrịta dị nso: Ọ bụrụ na anya nkwukọrịta dị mkpụmkpụ ma enweghị ọtụtụ ihe mgbochi, ọ gaghị adị mkpa inweta antenna dị elu. N'okwu a, uru dị ala (dịka ọmụmaatụ, uru dị obere)0-10dB) enwere ike ịhọrọ.
RM-BDHA0308-8(0.3-0.8GHz，8 Typ.dBi)
Nkwukọrịta dị n'etiti: Maka nkwukọrịta dị n'etiti, enwere ike ịchọ mmụba antenna dị n'etiti iji kwụọ ụgwọ maka mbelata akara Q nke anya nnyefe kpatara, ebe a na-atụlekwa ihe mgbochi dị na gburugburu ebe obibi. N'okwu a, enwere ike ịtọ uru antenna n'etiti10 na 20 dB.
RM-SGHA28-15(26.5-40 GHz, 15 Ụdị dBi)
Nkwukọrịta dị anya: Maka ọnọdụ nkwukọrịta nke chọrọ ikpuchi anya dị anya ma ọ bụ nwee ihe mgbochi karịa, enwere ike ịchọ mmụba antenna dị elu iji nye ike mgbaàmà zuru oke iji merie ihe ịma aka nke anya nnyefe na ihe mgbochi. N'okwu a, enwere ike ịtọ uru antenna n'etiti 20 na 30 dB.
RM-SGHA2.2-25(325-500GHz，25 Ụdị dBi)
Gburugburu ebe mkpọtụ dị elu: Ọ bụrụ na enwere nnukwu nnyonye anya na mkpọtụ na gburugburu ebe nkwukọrịta, antenna ndị nwere nnukwu uru nwere ike inye aka melite oke mgbaàmà-na-mkpọtụ ma si otú a melite mma nkwukọrịta.
E kwesịrị ịmara na mmụba nke uru antenna nwere ike iso ya na àjà n'akụkụ ndị ọzọ, dịka nduzi antenna, mkpuchi, ọnụ ahịa, wdg. Ya mere, mgbe ị na-ahọrọ uru antenna, ọ dị mkpa ịtụle ihe dị iche iche ma mee mkpebi kwesịrị ekwesị dabere na ọnọdụ ahụ kpọmkwem. Omume kachasị mma bụ ịme ule ubi ma ọ bụ iji ngwanrọ simulation iji nyochaa arụmọrụ n'okpuru uru dị iche iche iji chọta ntọala uru eke kacha mma.
Iji mụtakwuo maka antenna, biko gaa na:
Oge ozi: Nọvemba-14-2024
