Ko te pūihi he pūihi e rua ngā ara iahiko whakarara e honoa ana i ngā pito e rua, e hanga ana i tētahi hanganga porowhita kati, me te pūwāhi whāngai kei waenganui. Ko te roa katoa o te pūihi he haurua o te roanga ngaru, koia i huaina ai hoki ko te pūihi haurua-ngaru kua takai.
Awhe auau
Ka mahi te pūihi dipole takai haurua-ngaru i runga i te awhe auau o te 3 kHz ki te 300 GHz, ā, e whakamahia nuitia ana i roto i ngā kaiwhiwhi pouaka whakaata.
Hanganga me te Mātāpono Whakahaere o te Dipole Whakapiko Haurua-Ngaru
He maha ngā wā ka whakamahia tēnei momo pūihi me ngā pūihi rarangi hei whakanui ake i te aukati tāuru i te pūwāhi whāngai. Ko te tono tino noa ko te pūihi Yagi. E whakaatu ana te pikitia i raro nei i tētahi pūihi haurua-ngaru kua takai.
Ki te whakatauritea ki tētahi pūihi dipole tuku iho, ka whakauruhia e te pūihi dipole kua whakapikoa tētahi atu ara iahiko whakarara (arā, tētahi atu waea, he tokotoko rānei). Mā te whakanoho i ētahi ara iahiko whakarara ki te taha o tētahi taha me te whakamarumaru i waenganui i a rātou, ka taea te hanga i tētahi momo ara iahiko.
E whakaatu ana te pikitia i raro nei i te mātāpono whakahaere o te pūihi dipole kua pikohia ki te haurua-ngaru ina whakaohokia.
Mena he rite te whānui o te arataki matua ki te whānui o te arataki whakarara i roto i te rua-pou kua whakapikohia, ka piki ake te aukati whāngai o te pūihi mā te whā (te tapawhā o te rua). Ko tēnei pikinga o te aukati whāngai te take matua e whakamahia whānuitia ai te pūihi rua-pou kua whakapikohia. Nā tōna hanganga takirua-arataki, ko tōna aukati noa he tata ki te 300 Ω.
Aratau irahiko
He rite tonu te tauira irahiko o te pūihi haurua-ngaru kua whakapikohia ki tērā o te pūihi haurua-ngaru. E whakaatu ana te pikitia i raro nei i te tauira irahiko omnidirectional o tēnei pūihi haurua-ngaru kua whakapikohia.
Ka whakamahia te pūihi haurua-ngaru piko i ngā tono e hiahiatia ana te whakawhiti mana mōrahi, me te hiahia hoki ki te aukati teitei ake.
Ko tēnei pūrua whakapiko te wāhanga matua o te pūihi Yagi. E whakaatu ana te ahua i raro nei i tētahi pūihi Yagi (ka matapakihia taipitopitotia i muri mai). I roto i tēnei pūihi, ka honoa te pūwāhi whāngai ki te pūrua whakapiko hei wāhanga matua. I roto i ngā tekau tau kua pahure ake nei, kua whānuitia te whakamahinga o tēnei momo pūihi mō te whiwhinga pouaka whakaata.
Ko ngā painga e whai ake nei o te pūihi dipole takai haurua-ngaru.
1. Whiwhi tohu taurite.
2. Ka hopu i ngā tohu e hiahiatia ana mai i tētahi roopu auau motuhake, me te kore e ngaro te kounga.
3. Ka whakanuia e te dipole kua whakapikoa te kaha o te tohu.
Mō ētahi atu kōrero mō ngā antenna, tirohia:
Wā tuku: Pipiri-12-2026
