- He aha te kaha o te pūihi?
PūihiKo te whakanui e pā ana ki te ōwehenga o te mātotoru o te mana o te tohu i hangaia e te pūihi tuturu me te waeine whatu pai i te pūwāhi kotahi i raro i te āhua o te mana whakauru ōrite. E whakaahua ana i te nui o te whatu e whatu ana te pūihi i te mana whakauru i roto i te huarahi kukū. He mārama te hononga tata o te whakanui ki te tauira pūihi. Ko te whaiti ake o te porowhita matua o te tauira me te iti ake o te porowhita taha, ko te teitei ake o te whakanui. Ka whakamahia te whakanui pūihi hei ine i te kaha o te pūihi ki te tuku me te whiwhi tohu i roto i tētahi ahunga motuhake. Ko tētahi o ngā tawhā tino nui mō te whiriwhiri i ngā pūihi teihana turanga.
I te nuinga o te wā, ko te whakapai ake i te whiwhinga ka whakawhirinaki ki te whakaiti i te whānui o te hihi o te hihi poutū me te pupuri tonu i te mahi hihi omnidirectional i te papa whakapae. He mea tino nui te whiwhinga pūihi ki te kounga whakahaere o ngā pūnaha whakawhitiwhiti waea pūkoro nā te mea ka whakatau i te taumata tohu i te taha o te pūtau. Mā te whakanui ake i te whiwhinga ka taea te whakanui ake i te kapinga o te whatunga i roto i tētahi ahunga, te whakanui ake rānei i te tawhā whiwhinga i roto i tētahi whānuitanga. He tukanga rua-ara tetahi pūnaha waea pūkoro. Mā te whakanui ake i te whiwhinga o te pūihi ka taea te whakaiti i te tawhā tahua whiwhinga o te pūnaha rua-ara i te wā kotahi. Hei tāpiri, ko ngā tawhā e tohu ana i te whiwhinga pūihi ko dBd me dBi. Ko te dBi te whiwhinga e pā ana ki te pūihi pūtake pūwāhi, ā, he ōrite te hihi i ngā taha katoa; ko te dBd e pā ana ki te whiwhinga o te pūihi rarangi ōrite dBi=dBd+2.15. I raro i ngā āhuatanga ōrite, ko te teitei ake o te whiwhinga, ko te roa ake o te tawhiti ka taea e ngā ngaru reo irirangi te horapa.
Te hoahoa whakanui pūihi
I te wā e whiriwhiri ana i te whakanui pūihi, me whakatau i runga i ngā hiahia o te tono motuhake.
- Whakawhitiwhiti kōrero poto: Mena he poto te tawhiti whakawhitiwhiti kōrero, ā, kāore he maha o ngā arai, kāore pea e hiahiatia he whakanui pūihi teitei. I tēnei wā, he iti ake te whakanui (pēnei i0-10dB) ka taea te tīpako.
RM-BDHA0308-8（0.3-0.8GHz，8 Typ.dBi）
Whakawhitiwhiti kōrero tawhiti-waenga: Mō te whakawhitiwhiti kōrero tawhiti-waenga, me whakamahi pea he whakanui pūihi ngawari hei utu mō te whakaiti i te tohu Q i puta mai i te tawhiti tuku, me te whai whakaaro anō hoki ki ngā arai i roto i te taiao. I tēnei wā, ka taea te whakatakoto i te whakanui pūihi i waenga i10 me te 20 dB.
RM-SGHA28-15(26.5-40 GHz, 15 dBi momo)
Whakawhitiwhiti kōrero tawhiti: Mō ngā āhuatanga whakawhitiwhiti kōrero e hiahia ana kia roa ake ngā tawhiti, kia nui ake rānei ngā arai, me nui ake pea te whakanui pūihi hei whakarato i te kaha tohu e ranea ana hei wikitoria i ngā wero o te tawhiti tuku me ngā arai. I tēnei wā, ka taea te whakatakoto i te whakanui pūihi i waenga i 20 me te 30 dB.
RM-SGHA2.2-25(325-500GHz，25 dBi momo)
Taiao haruru nui: Mena he nui te pokanoa me te haruru i roto i te taiao whakawhitiwhiti kōrero, ka taea e ngā pūihi whai hua nui te whakapai ake i te ōwehenga tohu-ki-haruru, ā, ka whakapai ake i te kounga whakawhitiwhiti kōrero.
Me mōhio ko te whakanui ake i te whakanui pūihi ka haere tahi me ngā patunga tapu i roto i ētahi atu āhuatanga, pērā i te ahunga o te pūihi, te kapinga, te utu, me ētahi atu. Nō reira, i te wā e whiriwhiri ana i te whakanui pūihi, me whakaaro ki ngā āhuatanga maha me te whakatau tika i runga i te āhuatanga motuhake. Ko te mahi pai ko te whakahaere i ngā whakamātautau mara, te whakamahi rānei i te pūmanawa whakatauira hei aromatawai i te mahi i raro i ngā uara whakanui rerekē hei kimi i te tautuhinga whakanui taiao tino tika.
Mō ētahi atu kōrero mō ngā antenna, tirohia:
Wā tuku: Whiringa-ā-rangi 14-2024
