1. Okwu Mmalite nke Antennas
Antenna bụ usoro mgbanwe n'etiti oghere efu na eriri nnyefe, dị ka egosiri na eserese 1. Usoro nnyefe nwere ike ịbụ n'ụdị eriri coaxial ma ọ bụ oghere oghere (waveguide), nke a na-eji na-ebufe ike electromagnetic site na isi iyi. na antenna, ma ọ bụ site na antenna gaa na nnata.Nke mbụ bụ antenna na-ebugharị, nke ikpeazụ bụ nnataantenna.
Ọgụgụ 1 Electromagnetic ike nnyefe ụzọ
Nbufe nke usoro antenna na ọnọdụ nnyefe nke Figure 1 na-anọchi anya Thevenin nhata dị ka egosiri na eserese 2, ebe a na-anọchi anya isi iyi site na onye na-emepụta ihe mgbaàmà dị mma, eriri nnyefe na-anọchi anya ahịrị nwere njirimara impedance Zc, na Antenna na-anọchi anya ibu ZA [ZA = (RL + Rr) + jXA].Ihe nguzogide ibu RL na-anọchite anya njikwa na mfu dielectric jikọtara ya na nhazi antenna, ebe Rr na-anọchite anya nguzogide radieshon nke antenna, na mmeghachi omume XA na-eji na-anọchi anya akụkụ echiche nke impedance jikọtara ya na radieshon antenna.N'okpuru ọnọdụ dị mma, a ga-ebufe ike niile sitere na isi iyi mgbaàmà na nguzogide radieshon Rr, nke a na-eji na-anọchi anya ike radieshon nke antenna.Otú ọ dị, na ngwa bara uru, enwere mfu ndị na-eduzi-dielectric n'ihi njirimara nke eriri nnyefe na antenna, yana mfu nke ntụgharị uche (mmetụta) n'etiti eriri nnyefe na antenna.N'iburu n'uche ihe mgbochi dị n'ime nke isi iyi na ileghara ahịrị nnyefe na nhụsianya (mismatch) mfu, a na-enye ike kachasị na antenna n'okpuru njikọ njikọ.
Onyonyo 2
N'ihi ndakọrịta n'etiti eriri nnyefe na antenna, ebili mmiri na-egosipụta site na interface na-adabere na ebili mmiri ahụ merenụ site na isi iyi gaa na antenna iji mepụta ebili mmiri guzoro ọtọ, nke na-anọchite anya ntinye ume na nchekwa ma bụrụ ihe na-emekarị ka ọ bụrụ ngwaọrụ na-emegharị anya.A na-egosipụta ụkpụrụ ebili mmiri guzoro ọtọ site na ahịrị nwere ntụpọ dị na eserese 2. Ọ bụrụ na emeghị usoro antenna nke ọma, eriri nnyefe nwere ike ịrụ ọrụ dị ka ihe nchekwa ike kama ịbụ ntuziaka wave na ngwaọrụ nnyefe ike.
Ọnwụ ndị sitere na eriri nnyefe, antenna na ebili mmiri kwụ ọtọ adịghị mma.Enwere ike belata mfu ahịrị site na ịhọrọ ahịrị nnyefe dị ala, ebe enwere ike belata mfu antenna site na ibelata nguzogide mfu nke RL na-anọchi anya ya na eserese 2. Enwere ike ibelata ebili mmiri guzoro na nchekwa ike na ahịrị nwere ike belata site na nhata impedance nke. antenna (ibu) nke nwere njirimara njirimara nke ahịrị.
N'ime sistemu ikuku, na mgbakwunye na ịnata ma ọ bụ ibunye ike, a na-achọkarị antenna iji welie ike na-enwu n'ụfọdụ ụzọ ma gbochie ike na-enwu n'akụkụ ndị ọzọ.Ya mere, na mgbakwunye na ngwaọrụ nchọpụta, a ghaghị iji antennas mee ihe dịka ngwaọrụ ntụziaka.Antenna nwere ike ịdị n'ụdị dị iche iche iji gboo mkpa ụfọdụ.Ọ nwere ike ịbụ waya, oghere, patch, mgbakọ mmewere (usoro), ihe nlegharị anya, oghere, wdg.
N'ime usoro nzikọrịta ozi ikuku, antennas bụ otu n'ime ihe kacha mkpa.Nhazi antenna dị mma nwere ike ibelata ihe achọrọ sistemu yana melite arụmọrụ sistemu niile.Ihe atụ ama ama bụ telivishọn, ebe enwere ike imeziwanye nnabata mgbasa ozi site na iji antenna arụ ọrụ dị elu.Antennas bụ usoro nzikọrịta ozi ihe anya bụ maka mmadụ.
2. Nhazi nke antenna
Igwe mpi mpi bụ antenna planar, antenna microwave nwere okirikiri okirikiri ma ọ bụ akụkụ anọ nke na-emepe nke nta nke nta na njedebe nke waveguide.Ọ bụ ụdị antenna microwave kacha eji eme ihe.A na-ekpebi mpaghara radieshon ya site na nha oghere mpi na ụdị mgbasa.N'ime ha, mmetụta nke mgbidi mpi na radieshon nwere ike gbakọọ site na iji ụkpụrụ nke diffraction geometric.Ọ bụrụ na ogologo mpi ahụ na-anọgide na-agbanweghị agbanwe, oghere oghere na ọdịiche nke akụkụ anọ ga-abawanye na mmụba nke oghere oghere mpi, ma uru ahụ agaghị agbanwe na nha oghere.Ọ bụrụ na eriri ugboro nke mpi chọrọ ịgbasa, ọ dị mkpa iji belata ntụgharị uche n'olu na oghere nke mpi;ntụgharị uche ga-ebelata ka oghere oghere na-abawanye.Ọdịdị nke mpi mpi ahụ dịtụ mfe, usoro radieshon dịkwa mfe ma dị mfe ịchịkwa.A na-ejikarị ya eme ihe dị ka antenna ntụzi aka ọkara.Parabolic reflector mpi antennas nwere nnukwu bandwit, lobes akụkụ dị ala na arụmọrụ dị elu na-ejikarị na nkwukọrịta ngwa ndakwa nri.
RM-DCPHA105145-20(10.5-14.5GHz)
RM-BDHA1850-20(18-50GHz)
RM-SGHA430-10 (1.70-2.60GHz)
2. Microstrip antenna
Ihe owuwu nke antenna microstrip na-abụkarị nke mkpụrụ dielectric, radiator na ụgbọ elu ala.Ọkpụrụkpụ nke mkpụrụ dielectric dị obere karịa ogologo nfe.The metal mkpa oyi akwa na ala nke mkpụrụ ejikọrọ na ala ụgbọ elu, na metal mkpa oyi akwa na a kpọmkwem udi na-mere n'ihu site photolithography usoro dị ka a radiator.Enwere ike ịgbanwe ọdịdị nke radiator n'ọtụtụ ụzọ dịka ihe achọrọ.
Mmụba nke teknụzụ ntinye ngwa ndakwa nri na usoro nrụpụta ọhụrụ akwalitela mmepe nke antennas microstrip.E jiri ya tụnyere antennas ọdịnala, antennas microstrip abụghị naanị obere nha, ịdị arọ dị arọ, profaịlụ dị ala, dị mfe ịmekọrịta, mana ọ dịkwa mfe ijikọ ọnụ, ọnụ ala dị ala, dabara adaba maka mmepụta oke, yana nwekwara uru nke akụrụngwa eletrik dị iche iche. .
RM-MA424435-22 (4.25-4.35GHz)
RM-MA25527-22 (25.5-27GHz)
Oghere oghere waveguide bụ mpio nke na-eji oghere dị na nhazi waveguide iji nweta radieshon.Ọ na-enwekarị epekele ọla abụọ yiri ya na-akpụ ụzọ ụgbọ mmiri nwere oghere dị warara n'etiti efere abụọ ahụ.Mgbe ebili mmiri elektrọnik na-agafe ọdịiche nke waveguide, a ga-enwe mmetụta resonance, si otú ahụ na-emepụta oghere electromagnetic siri ike n'akụkụ oghere ahụ iji nweta radieshon.N'ihi nhazi ya dị mfe, antenna oghere waveguide nwere ike nweta brọdband na radieshon dị elu, ya mere a na-ejikarị ya na radar, nkwukọrịta, ihe mmetụta ikuku na mpaghara ndị ọzọ na ngwa ndakwa nri na igwe milimita.Uru ya gụnyere arụmọrụ radieshon dị elu, njirimara brọdband na ikike mgbochi nnyonye anya dị mma, yabụ ndị injinia na ndị nyocha na-akwado ya.
RM-PA7087-43 (71-86GHz)
RM-PA1075145-32 (10.75-14.5GHz)
RM-SWA910-22(9-10GHz)
Antenna biconical bụ eriri brọdband nwere usoro biconical, nke ejiri nzaghachi ugboro ugboro yana oke arụmọrụ radieshon mara ya.Akụkụ abụọ conical nke antenna biconical na-emekọrịta ihe na ibe ha.Site na ihe owuwu a, enwere ike nweta radieshon dị irè n'ime eriri ugboro ugboro.A na-ejikarị ya na mpaghara dị ka nyocha ụdịdị dị iche iche, nha radieshon na nnwale EMC (electromagnetic).Ọ nwere mma impedance matching na radieshon àgwà na dabara maka ngwa ndapụta na kwesịrị ikpuchi ọtụtụ ugboro.
RM-BCA2428-4 (24-28GHz)
RM-BCA218-4 (2-18GHz)
Antenna spiral bụ eriri brọdband nwere usoro okirikiri, nke ejiri nzaghachi ugboro ugboro yana oke arụmọrụ radieshon mara ya.Antenna spirral na-enweta ụdị dị iche iche nke polarization na njirimara radieshon sara mbara site na nhazi nke mkpuchi mkpuchi, yana dabara maka radar, nkwukọrịta satịlaịtị na sistemụ nkwukọrịta ikuku.
RM-PSA0756-3 (0.75-6GHz)
RM-PSA218-2R(2-18GHz)
Iji mụtakwuo maka antennas, biko gaa:
Oge nzipu: Jun-14-2024
