1. Whakataki ki ngā Antenna
He hanganga whakawhiti te pūihi i waenga i te wāhi wātea me te aho tuku, e whakaaturia ana i te Pikitia 1. Ka taea te aho tuku te āhua he aho coaxial, he ngongo pokorua rānei (aratohu ngaru), e whakamahia ana hei tuku i te pūngao hikohiko mai i te pūtake ki te pūihi, mai i te pūihi rānei ki te kaiwhiwhi. Ko te mea tuatahi he pūihi tuku, ko te mea tuarua he pūihi whiwhi.pūihi.
Pikitia 1 Ara tuku pūngao hikohiko
Ko te tuku o te pūnaha pūihi i te aratau tuku o te Pikitia 1 e tohuhia ana e te ōrite Thevenin e whakaaturia ana i te Pikitia 2, kei reira te pūtake e tohuhia ana e te kaihanga tohu pai, ko te raina tuku e tohuhia ana e te raina me te aukati āhuatanga Zc, ā, ko te pūihi e tohuhia ana e te kawenga ZA [ZA = (RL + Rr) + jXA]. Ko te ātete kawenga RL e tohu ana i ngā mate kawe me te mate hiko e pā ana ki te hanganga pūihi, ko Rr ia e tohu ana i te ātete irahiko o te pūihi, ā, ko te tauhohenga XA e whakamahia ana hei tohu i te wāhanga whakaaro o te aukati e pā ana ki te irahiko pūihi. I raro i ngā āhuatanga pai, me whakawhiti te pūngao katoa i hangaia e te pūtake tohu ki te ātete irahiko Rr, e whakamahia ana hei tohu i te kaha irahiko o te pūihi. Heoi, i roto i ngā tono mahi, kei reira ngā mate kawe-mate hiko nā ngā āhuatanga o te raina tuku me te pūihi, me ngā mate i puta mai i te whakaata (kore-taurite) i waenga i te raina tuku me te pūihi. I te whakaaro ki te aukati ā-roto o te pūtake me te kore e aro ki te raina tuku me ngā mate whakaata (kore-taurite), ka whakaratohia te mana mōrahi ki te pūihi i raro i te taurite honohono.
Pikitia 2
Nā te kore e ōrite te aho tuku me te pūihi, ka honoa te ngaru whakaata mai i te atanga ki te ngaru taunga mai i te pūtake ki te pūihi hei hanga i tētahi ngaru tū, e tohu ana i te kukū me te rokiroki pūngao, ā, he taputapu whakaohooho noa iho. Ka whakaaturia tētahi tauira ngaru tū noa iho e te rārangi iraira i te Pikitia 2. Mena kāore i te tika te hoahoa o te pūnaha pūihi, ka taea e te aho tuku te mahi hei wāhanga rokiroki pūngao, kaua hei arataki ngaru me te taputapu tuku pūngao.
Kāore e hiahiatia ana ngā mate i puta mai i te raina tuku, te pūihi me ngā ngaru tū. Ka taea te whakaiti i ngā mate raina mā te whiriwhiri i ngā raina tuku iti-mate, ko ngā mate pūihi ia ka taea te whakaiti mā te whakaiti i te ātete mate e tohuhia ana e te RL i te Pikitia 2. Ka taea te whakaiti i ngā ngaru tū, ā, ka taea te whakaiti i te rokiroki pūngao i roto i te raina mā te whakataurite i te aukati o te pūihi (kawenga) ki te aukati āhuatanga o te raina.
I roto i ngā pūnaha ahokore, hei tāpiri atu ki te whiwhi, ki te tuku rānei i te pūngao, me whakamahi ngā pūihi hei whakarei ake i te pūngao i tukuna ki ētahi ahunga, hei pehi hoki i te pūngao i tukuna ki ētahi atu ahunga. Nō reira, hei tāpiri atu ki ngā taputapu kimi, me whakamahi hoki ngā pūihi hei taputapu aronga. He maha ngā āhua o ngā pūihi hei whakatutuki i ngā hiahia motuhake. He waea, he kōhao, he papaki, he huihuinga huānga (huinga), he whakaata, he karu arotahi, me ētahi atu.
I roto i ngā pūnaha whakawhitiwhiti kōrero ahokore, ko ngā pūihi tētahi o ngā wāhanga tino nui. Mā te hoahoa pūihi pai ka taea te whakaiti i ngā whakaritenga o te pūnaha me te whakapai ake i te mahi whānui o te pūnaha. Ko tētahi tauira matarohia ko te pouaka whakaata, ka taea te whakapai ake i te whiwhinga pāhotanga mā te whakamahi i ngā pūihi mahi-teitei. Ko ngā pūihi ki ngā pūnaha whakawhitiwhiti kōrero, pērā i ngā kanohi ki te tangata.
2. Te Whakarōpūtanga o te Pūihi
He pūihi papatahi te pūihi haona, he pūihi ngaruiti me te porowhita, he tapawhā rānei te wāhanga e puare haere ana i te pito o te arataki ngaru. Koinei te momo pūihi ngaruiti e whakamahia whānuitia ana. Ka whakatauhia tōna mara irahiko e te rahi o te kōhao o te haona me te momo horapa. I roto i ēnei, ka taea te tatau i te awe o te pakitara haona ki te irahiko mā te whakamahi i te kaupapa o te diffraction āhuahanga. Mena ka noho tonu te roa o te haona, ka piki ake te rahi o te kōhao me te rerekētanga wāhanga tapawhā me te pikinga o te koki whakatuwheratanga haona, engari kāore te whakanui e rerekē me te rahi o te kōhao. Mena me whakawhānui te roopu auau o te haona, me whakaiti te whakaata i te kaki me te kōhao o te haona; ka heke te whakaata i te pikinga o te rahi o te kōhao. He tino māmā te hanganga o te pūihi haona, ā, he tino māmā hoki te tauira irahiko, ā, he ngāwari ki te whakahaere. Ko te tikanga he pūihi aronga-waenga. Ko ngā pūihi haona whakaata parabolic me te whānui o te whānui, ngā taha iti me te pai o te mahi ka whakamahia i roto i ngā whakawhitiwhiti kōrero whakawhiti ngaruiti.
RM-DCPHA105145-20(10.5-14.5GHz)
RM-BDHA1850-20(18-50GHz)
RM-SGHA430-10(1.70-2.60GHz)
2. Pūihi Miroiti
Ko te hanganga o te pūihi microstrip he mea hanga i te papa dielectric, te radiator me te papa whenua. He iti ake te matotoru o te papa dielectric i te roanga ngaru. Ka honoa te paparanga angiangi whakarewa i raro i te papa ki te papa whenua, ā, ka hangaia te paparanga angiangi whakarewa me te āhua motuhake ki mua mā te tukanga photolithography hei radiator. Ka taea te whakarerekē i te āhua o te radiator i roto i ngā huarahi maha e ai ki ngā whakaritenga.
Nā te aranga ake o te hangarau whakauru ngaruiti me ngā tukanga hanga hou kua whakatairanga i te whanaketanga o ngā pūihi moroiti. Ki te whakatauritea ki ngā pūihi tuku iho, ehara i te mea he iti noa te rahi o ngā pūihi moroiti, he māmā te taumaha, he iti te āhua, he ngāwari te whakarite, engari he ngāwari hoki te whakauru, he iti te utu, he pai mō te hanga papatipu, ā, he maha ngā painga o ngā āhuatanga hiko rerekē.
RM-MA424435-22(4.25-4.35GHz)
RM-MA25527-22(25.5-27GHz)
3. Pūihi mokamoka arataki ngaru
Ko te pūihi mokowā arataki ngaru he pūihi e whakamahi ana i ngā mokowā i roto i te hanganga arataki ngaru hei whakatutuki i te irahiko. Ko te tikanga he rua ngā pereti whakarewa whakarara e hanga ana i te arataki ngaru me te āputa whaiti i waenganui i ngā pereti e rua. Ina haere ngā ngaru hikohiko mā roto i te āputa arataki ngaru, ka puta he āhuatanga haruru, ka puta he mara hikohiko kaha e tata ana ki te āputa hei whakatutuki i te irahiko. Nā tōna hanganga ngāwari, ka taea e te pūihi mokowā arataki ngaru te whakatutuki i te irahiko whānui me te whai hua teitei, nō reira he whānui te whakamahinga i roto i te radar, te whakawhitiwhiti kōrero, ngā pūoko ahokore me ētahi atu mara i roto i ngā roopu ngaru ngaruiti me te mirimita. Ko ōna painga ko te whai huatanga teitei o te irahiko, ngā āhuatanga whānui me te kaha ārai-whakararu pai, nō reira he pai ki ngā miihini me ngā kairangahau.
RM-PA7087-43（71-86GHz）
RM-PA1075145-32（10.75-14.5GHz)
RM-SWA910-22(9-10GHz)
Ko te Antenna Biconical he antenna whānui me te hanganga biconical, e tohuhia ana e te urupare auau whānui me te pai o te hihi. He ōrite ngā wāhanga kōniko e rua o te antenna biconical tetahi ki tetahi. Mā tēnei hanganga, ka taea te whakatutuki i te hihi whai hua i roto i te whānuitanga o te aukume. He mea whakamahi i roto i ngā mara pēnei i te tātari ira, te ine hihi me te whakamātautau EMC (hototahi hikohiko). He pai te taurite aukati me ngā āhuatanga hihi, ā, he pai mō ngā horopaki tono e hiahia ana ki te kapi i ngā auau maha.
RM-BCA2428-4(24-28GHz)
RM-BCA218-4（2-18GHz)
He pūihi whānui te pūihi porowhita me te hanganga porowhita, e tohuhia ana e te urupare auau whānui me te pai o te hihi. Ka tutuki i te pūihi porowhita te kanorau porowhita me ngā āhuatanga hihi whānui-rohe mā te hanganga o ngā koiri porowhita, ā, he pai mō te radar, te whakawhitiwhiti amiorangi me ngā pūnaha whakawhitiwhiti ahokore.
RM-PSA0756-3(0.75-6GHz)
RM-PSA218-2R(2-18GHz)
Mō ētahi atu kōrero mō ngā antenna, tirohia:
Wā tuku: Pipiri-14-2024
