- Kedu ihe bụ uru nke antenna?
Antennauru na-ezo aka n'ogo nke njupụta ike nke mgbama sitere na antenna n'ezie yana ezigbo radiating unit n'otu oge na oghere n'okpuru ọnọdụ nke ike ntinye nha nhata. Ọ na-akọwa n'ụzọ dị iche iche ogo antenna na-amụnye ike ntinye n'ụzọ gbadoro anya. O doro anya na uru ahụ nwere njikọ chiri anya na ụkpụrụ antenna. The warara isi lobe nke ụkpụrụ na obere akụkụ lobe, elu uru. A na-eji uru antenna iji tụọ ike nke antenna izipu na ịnata akara n'otu akụkụ. Ọ bụ otu n'ime ihe kachasị mkpa maka ịhọrọ antenna ọdụ ọdụ.
N'ikwu okwu n'ozuzu, mmụba nke uru na-adabere na ibelata obosara nke radieshon kwụ ọtọ ebe a na-ejigide arụmọrụ radieshon omnidirectional n'ime ụgbọ elu kwụ ọtọ. Uru antenna dị oke mkpa maka ịdị mma nke sistemu nkwukọrịta mkpanaka n'ihi na ọ na-ekpebi ọkwa mgbama na nsọtụ cell. Ịba ụba uru nwere ike ịbawanye mkpuchi nke netwọk n'otu akụkụ, ma ọ bụ mee ka oke uru dị n'ime ebe ụfọdụ. Sistemụ cellular ọ bụla bụ usoro ụzọ abụọ. Ịbawanye uru nke antenna nwere ike belata n'otu oge oke uru mmefu ego nke usoro ụzọ abụọ. Na mgbakwunye, paramita ndị na-anọchi anya uru antenna bụ dBd na dBi. dBi bụ uru n'akụkụ antenna isi iyi, na radieshon n'akụkụ niile bụ otu; dBd bụ n'ihe metụtara uru nke antenna array symmetrical dBi=dBd+2.15. N'okpuru otu ọnọdụ ahụ, ka uru ahụ dị elu, ogologo oge nke ebili mmiri redio nwere ike ịgbasa.
Eserese uru nke antenna
Mgbe ị na-ahọrọ uru antenna, ekwesịrị ikpebi ya dabere na mkpa nke ngwa a kapịrị ọnụ.
- Nkwurịta okwu dị mkpirikpi: Ọ bụrụ na anya nkwurịta okwu dị mkpụmkpụ ma enweghi ọtụtụ ihe mgbochi, uru antenna dị elu agaghị achọ. N'okwu a, uru dị ala (dịka0-10dB) enwere ike ịhọrọ.
RM-BDHA0308-8 (0.3-0.8GHz, 8 Typ.dBi)
Nkwukọrịta dị n'etiti: Maka nzikọrịta ozi nke etiti, enwere ike ịchọ uru antenna na-agafeghị oke iji kwụọ ụgwọ mgbama Q kpatara site na anya nnyefe, na-eburu n'uche ihe mgbochi 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 )
Nkwurịta okwu dị anya: Maka ọnọdụ nzikọrịta ozi chọrọ ikpuchi ogologo anya ma ọ bụ nwee ihe mgbochi karịa, enwere ike ịchọ uru antenna dị elu iji nye ike mgbaama zuru oke iji merie ihe ịma aka nke nnyefe anya 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)
Mpaghara mkpọtụ dị elu: Ọ bụrụ na enwere ọtụtụ nnyonye anya na mkpọtụ na gburugburu nkwukọrịta, antennas nwere nnukwu uru nwere ike inye aka melite ogo mgbama na mkpọtụ wee si otú a melite ogo nkwukọrịta.
Ekwesiri iburu n'uche na uru antenna na-abawanye nwere ike so ya na àjà n'akụkụ ndị ọzọ, dị ka antenna Directivity, mkpuchi, ọnụ ahịa, wdg. Ya mere, mgbe ị na-ahọrọ eri eri, ọ dị mkpa iji tụlee ihe dị iche iche ma mee mkpebi kwesịrị ekwesị dabere na kpọmkwem. ọnọdụ. Omume kachasị mma bụ ịme ule ubi ma ọ bụ jiri ngwanrọ ịme anwansị iji nyochaa arụmọrụ n'okpuru ụkpụrụ uru dị iche iche iji chọta ntọala uru eke kacha dabara adaba.
Iji mụtakwuo maka antennas, biko gaa:
Oge nzipu: Nov-14-2024
