Pikitia 1. Ngā rohe hihi matua me te taha taha e whakamahia ana hei tautuhi i te whai huatanga o te hihi pūihi.
He aha te Whai Hua o te Hiko Pūihi?
Te whai huatanga o te hihi pūihi, e kiia ana hoki ko te whai huatanga o te hihi matua, ko te wāhanga o te mana katoa o te pūihi e tukuna ana ki roto i tētahi rohe hihi matua kua tautuhia. Ka whakautua e ia tētahi pātai hoahoa mahi: e hia te nui o te hihi e wātea ana e aro ana ki te wāhanga koki e hiahiatia ana, kaua ki te tohatoha ki ngā taha taha me te taha o muri?
Mō te pūihi whiwhi, mā te tauutuutu ka taea te tiro i te whakaaro kotahi hei wāhanga o te mana i whiwhihia i roto i te hihi matua ina tautuhia te mara e karapoti ana me ngā tikanga porowhita. Nō reira, he tino whai hua te whai huatanga o te hihi i roto i te radar, te ine irahiko, ngā hononga amiorangi, ngā pūnaha ngaruiti tohu-ki-tohu me te ine pūihi, i te wā e taea ai e te kaha e haere mai ana, e wehe atu ana rānei ki ngā ahunga kāore e hiahiatia te whakaiti i te tika, te whakanui rānei i te pokanoa.
I te Pikitia 1, kei waenganui te pū matua i te tuaka-z. Mena ko te koki o te kōne θ1Hei tohu i te kore tuatahi, i tētahi atu rohe hihi matua kua tohua mārama rānei, ka tatauhia te whai huatanga o te hihi mā te whakauru i te tauira mana i roto i taua koeko, ka wehea ki te mana i whakaurua ki runga i te tauira hihi katoa.
Tātai Whai Hua o te Hiko Pūihi
Mā te whakamahi i te tauira mana kua whakaritea Pn(θ,φ), ko te kīanga whānui mō te whai huatanga o te hihi e whakaaturia ana i raro nei:
Ko te taunga e tohu ana i te mana kei roto i te koki totoka matua kua tīpakohia, ΩMB. Ko te tauwehenga e tohu ana i te mana katoa i whakahōrapahia i roto i ngā 4π steradian. Ko te uara hua, ηB, kāore he whānuitanga, ā, e whakaaturia ana i te nuinga o te wā hei ōrau.
- Pn(θ,φ)ko te tauira mana kua whakaōritehia. Mena ka whakamahia ngā raraunga mara-hiko kua inehia, ka ōrite te kupu mana e rite ana ki te |E|2.
- ΩMBko te rohe kurupae matua kua tohua, e herea ana e ngā kore tuatahi, e tētahi koki koene kua tautuhia rānei.
- θ me φko ngā taunga teitei me te azimuth e whakamahia ana hei whakaahua i te tauira irahiko katoa.
Me whakaatu tonu te rohe matua-kurupae me te hua. Ka taea e ngā taiwhanga e rua te whiwhi uara tau rerekē mai i te tauira kotahi mēnā ka whakauru tetahi ki te kore tuatahi, ko tetahi e whakamahi ana i te koeko koki pumau. Mō te kurupae pene e āhua rite ana te hurihanga, ka taea te whakangawari i te whakauru e whakaaturia ana i te kīanga e whai ake nei.
Me pēhea te ine i te whai huatanga o te hihi pūihi?
Ka whiwhihia te whai huatanga o te hihi mai i ngā raraunga tauira hihi, kaua i te pānui tirohanga kotahi. Ka taea te whakamahi i tētahi whānuitanga papa-tawhiti kua whakatikatikaina, he whānuitanga whakamātautau pūihi kiato, he pūnaha papa-tata rānei me tētahi panoni papa-tawhiti kua whakamanahia. Mō ngā rarangi wāhanga, me mahi anō te ine mō ia āhua hihi, auau me te pōraihana e hiahiatia ana nā te mea ka taea e te matawai me ngā hapa whānui, wāhanga rānei te tohatoha anō i te mana ki ngā taha taha.
- Inehia te tauira irahikohe nui te hipoki koki hei whakauru i te kurupae matua, ngā taha me te tuara.
- Tahurihia te āpure i inehia ki tētahi tauira manaā, whakamahia te whakatauritenga ōrite ki ia tauira koki.
- Tautuhia te rohe matua-kurupae, pērā i te kōtaha kore-tuatahi, i tētahi koki koeko kua tohua rānei.
- Whakauruhia te mana ki roto i taua roheka wehea e te mana i whakaurua ki runga i te tauira katoa.
- Pūrongohia ngā āhuatanga whakamātautau, tae atu ki te auau, te porowhita, te āhua hihi, te taumira koki me te whakamāramatanga rohe.
Ka taea e te takirua o ngā tapahanga papa-E me papa-H e rua-ahu te whakaatu i te whānui o te hihi me te whanonga o te taha taha, engari kāore e whakarato i te uara whai huatanga hihi-toru-ahu katoa mēnā kāore i whakamanahia te ōritetanga hurihuri. Mā te porowhita-katoa, mā te raraunga tauira tino oti rānei ka puta he hua e taea te tiaki. Ako atu mō ngā RF MISOngā āheinga whakamātautau pūihi.
Te Whai Hua o te Hiko me ētahi atu Kupu Whai Hua o te Pūihi
Te Whai Hua o te Hiko me te Whai Hua o te Irahiko
Te whai huatanga o te irahikoka whakataurite i te mana i tukuna ki te mana e whakaaetia ana e te pūihi, ā, nō reira ka whakaata i ngā mate o te ara iahiko me te mate uruhanga.Te whai huatanga o te hihie whakaahua ana i te wāhi e haere ana te mana i tukuna. He iti noa te ngaronga o roto o te pūihi engari he iti tonu te pai o te hihi mēnā he nui te mana e puta mai ana i ngā taha taha, i te taha muri rānei.
Te Whai Hua o te Hiko me te Arotahi me te Whiwhi
Te aronga tikae whakaahua ana i te kukū tihi o te tauira irahiko e pā ana ki tētahi pūwhakamahana isotropic. Ka honoa te whai huatanga ki te whai huatanga irahiko, ko te whai huatanga kua tutukihia ka whakaaro hoki ki te kore taurite o te aukati. He rerekē te whai huatanga o te hihi nā te mea ka whakauruhia te mana puta noa i tētahi rohe koki, kaua ki te aromatawai i te ahunga tihi anake.
Te Whai Hua o te Hiko me te Whānui o te Hiko
Ko te whānui o te hihi haurua-mana ko te whānui koki i waenganui i ngā pūwāhi -3 dB o te pū matua. He maha ngā wā ka haere tahi te hihi whaiti me te aronga teitei, engari kāore e whakaatu i te pai o te hihi teitei. Ka taea e te tauira te whaiti i te tihi, engari ka tukuna tonu he kaha nui ki ngā pū taha. Nō reira, me arotake tahi te whānui o te hihi me te taumata o te pū taha me te uara pai o te hihi whakauru.
He aha ngā mea e whakahaere ana i te pai o te hihi o te pūihi?
1. Ngā Taumata o te Puku taha me te Puku tuara
Ka whakaiti tika te mana i waho o te rohe hihi matua kua tohua i te pai o te hihi. Tērā pea ka puta ngā taha taha teitei mai i ngā motumotu o te whakatuwheratanga, te mokowā rarangi, ngā hapa whānui, te kōtaha whakamārama rānei kāore anō kia arotauhia mō te tauira e hiahiatia ana. Ka pā anō pea te pānga o te hihi whakamuri me te marara mai i ngā hanganga tata.
2. Te Whakamārama o te Pūwero me te Whakaiti i te Whānuitanga
Ka whakamahia e ngā pūihi me ngā rarangi pūaha he tohatoha kaha puta noa i te pūaha e whiti ana. Ka taea e te tohatoha tata ōrite te whakaputa i tētahi hihi matua whaiti me te aronga teitei, engari ka taea hoki e ia te whakaputa i ngā taha taha teitei. Mā te whakamahi i tētahi whakawhāiti kaha ka taea te pehi i ngā taha taha me te whakanoho i te nui ake o te mana tauira katoa ki te rohe e hiahiatia ana, ahakoa ka taea e te whakawhāiti nui te whakawhānui i te hihi matua me te whakaiti i te pikinga tihi, te pai rānei o te pūaha. Nō reira, ko te tautuhinga pai rawa atu he tauwhitinga motuhake ki te tono.
3. Te maringi o te whāngai me te aukati hanganga
I roto i te pūihi whakaata, ka horapa te kaha e ngaro ana i te whakaata, ā, kāore e uru ki te hihi matua e hiahiatia ana. Ka taea hoki e ngā tautoko whāngai, he whakaata iti, he taputapu tata rānei te aukati, te whakamarara rānei i tētahi wāhanga o te āpure whakatuwheratanga. Mā te kōwhiringa whāngai tika, te tūnga arotahi me te whakaritenga miihini ka āwhina i te whakahaere i ēnei ngaronga me ngā pūwero kāore e hiahiatia.
4. Ngā Hapa Āhua, te Whānui me te Mata
Ka taea e te kore taurite o te āhua i waenga i ngā huānga o te rarangi, te ngaronga whāngai kore taurite, te manawanui hanga, te hapa o te mata whakaata me te hapa radome te neke atu i te pūngao mai i te hihi e whakaarohia ana. I te nuinga o te wā ka nui ake te hiranga o ēnei pānga i te pikinga o te auau nā te mea he nui ake te wāhanga o te roangaru e tohuhia ana e te hapa ā-ahu pumau.
5. Te Parakore o te Porowhita
Ko ētahi o ngā whakamāramatanga whai hua o te hihi e whakauru ana i te mana anake i roto i te pōraihana e hiahiatia ana. Ka taea e te hihi whakawhiti-pōraihana i roto, i waho rānei i te hihi matua te whakaiti i te uara kua pūrongohia. Me tohu tonu te pōraihana i roto i ngā whakaritenga whakatauira, ine me te pūnaha.
He rerekē te pai o te hihi, te whānui o te hihi me te whānui o te aratuku
Te whai huatanga o te hihihe ōwehenga mana koki whakauru.Whānuitanga o te hihie whakaahua ana i te whānui koki o te pū matua i tētahi taumata kua whakaritea, ko te nuinga o ngā pūwāhi haurua-mana, ko te -3 dB rānei.Te whānui o te pūihie whakaahua ana i te awhe auau e tutuki ai ngā whakaritenga kua tīpakohia. Ka pāngia ēnei tawhā tetahi e tetahi, engari kāore e taea te whakawhiti.
Tērā pea ka mau tonu te VSWR e whakaaetia ana i roto i tētahi whānuitanga auau whānui i te mea ka tino rerekē te ahunga o tōna hihi, te taumata o te taha taha, te pai rānei o te hihi tata ki ngā taha o te whitiki. Nō reira, me manatoko te mahi tauira i ētahi auau, kaua e whakatau mai i te whānui o te aukati anake. Mō tētahi maimoatanga taipitopito o ngā whakamāramatanga whānuitanga auau, tirohiaWhānuitanga o te Pūihi.
Me pēhea te whakapai ake i te whai huatanga o te hihi?
- Kōwhiria he whakawhāiti āputa e whakataurite ana i te pehi taha, te whānui o te hihi matua, me te whakanui.
- Arotauhia te tūnga whāngai whakaata, te māramatanga taha me te horapa atu.
- Whakamahia te mokowā huānga e tika ana, me te whakahaere whānui, ā-wāhanga rānei i roto i ngā rarangi hei karo i te pakaru o ngā porowhita.
- Whakaitihia te aukati, te marara o ngā taura me te taunekeneke kāore e hiahiatia ki te hanganga whakairi, ki te radome rānei.
- Whakahaerehia ngā āheinga miihini, te tika o te mata me te whakaritenga i te auau mahi teitei rawa.
- Manatokohia ngā tauira co-polar me cross-polar puta noa i te awhi mahi katoa me ngā āhua hihi katoa e hiahiatia ana.
Kei hea te mea tino hira o te whai huatanga o te hihi teitei?
He mea nui rawa te whai huatanga o te hihi teitei ina me herea te hiko, te pūngao rānei e whiwhihia ana ki tētahi ahunga kua tautuhia pai. Ko ngā tauira noa ko te radar aroturuki me te whakaahua ūnga, ngā hononga whakawhitiwhiti amiorangi, te whetū irirangi me te ine irahiko, ngā hononga ngaruiti tohu-ki-tohu, ngā pūnaha whāngai whakaata, ngā pūihi whakatikatika me ngā rarangi arataki hiko.
Kāore he ōrau whai huatanga hihi e tika ana mō ia pūihi. Me whakaatu i roto i tētahi whakaritenga whai hua te auau whakahaere, te pōraihana, te āhua hihi me te rohe koki, me te whanonga e whakaaetia ana o te taha taha me te tuara-taha. Mā tēnei ka taea te whakataurite tika i ngā raraunga a te kaiwhakarato, te whakatauira me ngā hua ine.
He aha ngā mea me tirotiro e ngā kaihoko i roto i te pepa raraunga pūihi?
Mēnā he mea nui te whakahaere hihi, kaua e aromatawai i te pūihi mā te pikinga teitei anake. Pātai atu ki te kaihanga ko ēhea ngā raraunga tauira me ngā tikanga whakamātautau e wātea ana mō te tauira me te awhe auau tuturu.
- Te whānuitanga o ngā auau whakahaere me ngā auau e whakamahia ana mō ngā inenga tauira
- Te whakanui, te whānuitanga hihi haurua-mana me te taumata taha tuatahi o te pito ki te auau
- Ngā tauira irahiko co-polar me cross-polar i roto i ngā papa e hiahiatia ana, i runga rānei i te matawai porowhita
- Ko te rohe koki me te porowhita e whakamahia ana hei tatau i te whai huatanga o te hihi, ina tohua taua uara
- VSWR, hononga, atanga arataki ngaru rānei, te whakahaere hiko me ngā whakaritenga taiao
- Ngā ātete ā-mīhini, te whakaritenga whakairi me tetahi whirihoranga whāngai-radome, whāngai whakaata rānei
Ngā Otinga Pūihi Ngaruiti RF MISO
Ka whakaratohia e te RF MISO ngā pūihi ngaruiti me ngā pūihi mirimita-ngaru mō te ine, te radar, te whakawhitiwhiti kōrero me te whakaurunga pūnaha. Ko ngā whānau hua e tika ana kongā pūihi haona paerewa, ngā pūihi whakaatamengā pūihi rarangiMe arotake ngā whakatakotoranga motuhake mō te tauira me ngā raraunga whakamātautau e wātea ana ki te auau, te pōraritanga, te whakanui me te mahi tauira e hiahiatia ana.
Mō te kōwhiringa pūihi, mō tētahi whakaritenga ritenga rānei,whakapā atu ki a RF MISO at info@rf-miso.com.
Te wā tuku: Hurae-12-2024
