Te whai huatanga o te pūihie whakaahua ana i te whai huatanga o te hurihanga o te mana RF kua whakaaetia hei mana irahiko. He tawhā matua tēnei mō te pūihi nā te mea ka taea e te ngaronga o te arataki hiko, te ngaronga o te dielectric me te kore taurite o te aukati te whakaiti i te irahiko e taea te whakamahi ahakoa he tauira tika tā te pūihi.
Ko te tātai taketake mō te whai huatanga o te irahiko ko:
Te whai huatanga o te irahiko, erad= Prad/ Pwhakaaetia
Kei roto hoki i te whai huatanga katoa te kore taurite i te whakaurunga pūihi:
Te whai huatanga katoa, e0= (1 - |Γ|2) erad
kei hea a Pradko te mana i tukuna, Pwhakaaetiako te mana e whakaaetia ana, ā, ko Γ te tauwehenga whakaata tāuru. E whakamārama ana tēnei aratohu i ngā tātai whai huatanga o te pūihi, ngā tikanga ngaronga, te whakanui, te aronga, te whakanui kua tutukihia me ngā tikanga ine noa.
Te Whai Hua o te Pūihi: Ngā Whakamāramatanga me ngā Tātai
Pikitia 1
Ka taea te tautuhi i te ariā o te whai huatanga o te pūihi mā te whakamahi i te Pikitia 1.
Ka whakamahia te tapeke o te whai huatanga o te pūihi e0 hei tatau i ngā ngaronga pūihi i te whakaurunga me roto i te hanganga pūihi. E pā ana ki te Pikitia 1(b), ko ēnei ngaronga pea nā:
1. Ngā whakaata nā te kore ōrite o te raina tuku me te pūihi;
2. Ngā mate o te arataki me te mate uruhanga.
Ka taea te whiwhi i te whai huatanga katoa o te pūihi mai i te tātai e whai ake nei:
Arā, ko te pai o te katoa = te hua o te pai o te kore taurite, te pai o te ara iahiko me te pai o te uruhanga hiko.
He tino uaua te tatau i te pai o te ara iahiko me te pai o te uruhanga hiko, engari ka taea te whakatau mā roto i ngā whakamātautau. Heoi, kāore e taea e ngā whakamātautau te wehewehe i ngā ngaronga e rua, nō reira ka taea te tuhi anō i te tātai i runga ake nei:
Ko te ecd te whai huatanga o te irahiko o te pūihi, ā, ko te Γ te tauwehenga whakaata.
Te Hua, te Tikanga Ārahi me te Hua i Whakatutukihia
Te aronga tikae whakaahua ana i te kukū o te tauira irahiko i tētahi ahunga kua hoatu.Whiwhika whakakotahi i te aronga tika me te whai huatanga o te irahiko:
G = eradD
ko G te whakanui, ko D te aronga, ā, ko eradko te whai huatanga o te irahiko. Nō reira, ko te whakanui te take o te ngaronga o te ara iahiko me te mate uruhanga, engari i te nuinga o te wā kāore e whakaurua te ngaronga ārai-kore taurite.
I te nuinga o te wā, e pā ana ki te whakanui whanaunga, e whakamāramahia ana ko "te ōwehenga o te whakanui mana i roto i tētahi ahunga kua tohua ki te mana o tētahi pūihi tohutoro i roto i tētahi ahunga tohutoro". Me ōrite te mana whakauru ki tēnei pūihi. Ka taea te whakamahi i tētahi wiri, i tētahi haona, i tētahi atu pūihi rānei hei pūihi tohutoro. I te nuinga o te wā, ka whakamahia he pūtake pūwāhi kore-aronga hei pūihi tohutoro. Nō reira:
Ko te whanaungatanga i waenga i te mana katoa i whakapūatatia me te mana katoa i whakaurua koia tēnei:
Te hua kua kiteakei roto ko te pānga o te kore taurite o te whakauru, ā, e pā ana ki te hua mā te:
Gi tutuki= (1 - |Γ|2)G
Ina pai te ōrite o te pūihi, ka tata te whiwhinga kua kitea ki te whiwhinga. Mena he nui te kore ōrite, ka iti ake te whiwhinga kua kitea ahakoa kāore anō kia rerekē te tauira irahiko me te whai huatanga o te irahiko.
Ko te whanaungatanga i waenga i te whiwhinga me te aronga:
Mena he tino ōrite te pūihi ki te raina tuku, |Γ| = 0, ā, ko te whiwhinga kua kitea he rite ki te whiwhinga. I roto i ngā pūnaha mahi, me whai whakaaro anō hoki ki te ngaronga taura me te papa tohutoro whakatikatika ina whakatauritehia ana ngā uara ine me ngā uara whakatauira.
Ngā Take Matua e Whakaiti ana i te Whai Hua o te Pūihi
- Te kawe hiko mutunga kore me te taratara o te mata
- Te ngaronga hiko-kore i roto i ngā papa, ngā radome me ngā rauemi tautoko
- Te kore ōrite o te aukati i te whāngai
- Ngā whatunga taurite ngaro, ngā hononga me ngā hanganga whāngai
- Te tāutanga tata ki te konganuku, ki ngā rauemi mimiti, ki te tinana tangata rānei
- Ngā ātete hanga me te tohatoha iahiko e whakawhirinaki ana ki te auau
Te Ine i te Whai Hua o te Pūihi
Ko te tikanga ine e whakawhirinaki ana ki te momo pūihi, te whānuitanga auau me ngā whakaurunga whakamātautau e wātea ana. Ko ngā huarahi noa ko te whakatairite i te ahunga-whakapiki, te whakaurunga tauira-ira, ngā inenga rūma whakaata me te tikanga Wheeler-cap mō ngā pūihi iti hiko e tika ana. He mea nui te whakatikatika tika, te whakatikatika taura-ngaronga, te whakaritenga porowhita me te papa tohutoro kua tautuhia mārama mō ngā hua whai tikanga.
Te Whakamahi i te Whai Hua me te Whakanui i roto i te Kōwhiringa Pūihi
Me arotake ngātahi te whai huatanga, te whakanui, te whakanui kua tutukihia, te whānui o te hononga, te pōraritanga, te whānui o te hihi me te VSWR. Ahakoa he nui rawa te ngaronga, te kore rānei e ōrite, ka taea tonu e te pūihi aronga-teitei te whakaputa i te whakanui kua tutukihia kia ngoikore. Me whakataurite e ngā kaihangarau ngā uara puta noa i te whānuitanga mahi katoa, ā, i raro i ngā āhuatanga whakairinga e tika ana.
Tūhurahia te RF MISOngā otinga pūihiarotakehia rānei tā mātoungā āheinga whakamātautau pūihiMō te kōwhiringa motuhake ki te tono, tohaina te roopu whakahaere, te whakanui e hiahiatia ana, te whakapolarisasi, ngā herenga whakairi me te taiao whakamātautau ki te tīma RF MISO.
Mō ētahi atu kōrero mō ngā antenna, tirohia:
Wā tuku: Pipiri-14-2024
