I roto i te mara ongā pūihi rarangi, ko te hanga hihi, e mōhiotia ana ko te tātari ā-wāhi, he tikanga tukatuka tohu e whakamahia ana hei tuku me te whiwhi i ngā ngaru reo irirangi ahokore, i ngā ngaru oro rānei i roto i te huarahi ahunga. He mea whakamahi noa te hanga hihi i roto i ngā pūnaha radar me te sonar, ngā whakawhitiwhiti kōrero ahokore, te oro, me ngā taputapu hauora. I te nuinga o te wā, ka tutukihia te hanga hihi me te matawai hihi mā te whakatakoto i te whanaungatanga ā-wāhanga i waenga i te whāngai me ia huānga o te rarangi pūihi kia tukuna, kia whiwhi rānei ngā huānga katoa i ngā tohu i roto i te ā-wāhanga i roto i tētahi ahunga motuhake. I te wā tuku, ka whakahaere te kaihanga hihi i te ā-wāhanga me te kaha whanaunga o te tohu o ia tuku hei waihanga i ngā tauira pokanoa hanga me te whakangaro i runga i te ngaru. I te wā whiwhi, ka whakatairangahia e te whirihoranga rarangi pūoko te whiwhinga o te tauira irahiko e hiahiatia ana.
Hangarau Hanga Hiko
Ko te hanga hihi he tikanga e whakamahia ana hei ārahi i te tauira hihi ki te ahunga e hiahiatia ana me te urupare pumau. Ko te hanga hihi me te matawai hihi o tētahipūihiKa taea te whakatutuki i te whakarārangi mā te pūnaha nekehanga ā-wā, mā te pūnaha whakaroa wā rānei.
Nekehanga Āhuatanga
I roto i ngā pūnaha whāiti, ka kiia hoki te whakaroa wā he nekehanga ā-wāhanga. I te auau reo irirangi (RF) te auau waenga rānei (IF), ka taea te whakatutuki i te hanga hihi mā te nekehanga ā-wāhanga me ngā nekehanga ā-wāhanga ferrite. I te ara turanga, ka taea te whakatutuki i te nekehanga ā-wāhanga mā te tukatuka tohu mamati. I roto i te mahi ara whānui, he pai ake te hanga hihi whakaroa-wā nā te mea me hanga te ahunga o te hihi matua kia kore e rerekē ki te auau.
RM-PA17731
RM-PA10145-30(10-14.5GHz)
Te whakaroa o te wā
Ka taea te whakauru i te whakaroa wā mā te whakarerekē i te roa o te raina tuku. Pērā i te nekehanga ā-wāhanga, ka taea te whakauru i te whakaroa wā i te auau reo irirangi (RF) i te auau waenga rānei (IF), ā, ka pai te mahi a te whakaroa wā i whakaurua mai i tēnei ara i runga i te whānuitanga auau whānui. Heoi, ko te whānui o te rarangi matawai-wā ka whakawhāitihia e te whānui o ngā dipole me te mokowā hiko i waenga i ngā dipole. Ina piki ake te auau mahi, ka piki ake te mokowā hiko i waenga i ngā dipole, ka hua ake he taumata whakawhāiti o te whānui o te hihi i ngā auau teitei. Ina piki ake te auau, ka mutu ka arahi ki ngā porowhita kuiti. I roto i te rarangi ā-wāhanga, ka puta ngā porowhita kuiti ina neke ake te ahunga hanga hihi i te uara mōrahi o te hihi matua. Ka puta he hapa i roto i te tohatoha o te hihi matua i tēnei āhuatanga. Nō reira, kia kore ai e pakaru ngā porowhita kuiti, me tika te mokowā o ngā dipole pūihi.
Ngā Taumaha
He whārite matatini te whārite taumaha, ko tōna wāhanga whānui te mea e whakatau ana i te taumata o te taha taha me te whānui o te hihi matua, ko te wāhanga ā-wāhanga ia e whakatau ana i te koki hihi matua me te tūnga kore. Ka whakamahia ngā taumaha ā-wāhanga mō ngā rarangi whāiti e ngā kaitahuri ā-wāhanga.
RM-PA7087-43(71-86GHz)
RM-PA1075145-32(10.75-14.5GHz)
Hoahoa Hanga Kurupae
Ko ngā pūihi ka taea te urutau ki te taiao RF mā te whakarerekē i tō rātou tauira irahiko ka kiia he pūihi whakarārangi ā-wāhanga hohe. Ko ngā hoahoa hanga hihi ka uru atu ki ngā whakarārangi pūihi Butler, te whakarārangi pūihi Blass, me ngā whakarārangi pūihi Wullenweber.
Butler Matrix
Ka whakakotahi te Butler Matrix i tētahi piriti 90° me tētahi nekehanga ā-wāhanga hei whakatutuki i tētahi wāhanga hipoki tae atu ki te 360° mēnā he tika te hoahoa o te oscillator me te tauira aronga. Ka taea te whakamahi i ia hihi e tētahi tuku, e tētahi kaiwhiwhi rānei kua whakatapua, e tētahi tuku, e tētahi kaiwhiwhi rānei e whakahaerehia ana e tētahi pana RF. Mā tēnei, ka taea te whakamahi i te Butler Matrix hei whakahaere i te hihi o tētahi rarangi porowhita.
Te Matrix a Brahs
Ka whakamahia e te matihiko Burras ngā raina tuku me ngā hononga ahunga hei whakatinana i te hanga hihi whakaroa-wā mō te mahi whānui. Ka taea te hoahoa i te matihiko Burras hei hanga hihi whānui, engari nā te whakamahinga o ngā whakamutu ātete, he nui ake ōna mate.
Ngā pūihi Woollenweber
Ko te huinga pūihi Woollenweber he huinga porowhita e whakamahia ana mō ngā tono kimi ahunga i roto i te roopu auau teitei (HF). Ka taea e tēnei momo huinga pūihi te whakamahi i ngā huānga ahunga-katoa, ahunga-katoa rānei, ā, ko te maha o ngā huānga he 30 ki te 100 te nuinga, ko te hautoru o ēnei e whakatapua ana ki te hanga i ngā hihi ahunga-katoa. Ka honoa ia huānga ki tētahi taputapu reo irirangi ka taea te whakahaere i te taumaha whānui o te tauira huinga pūihi mā te goniometer ka taea te matawai i te 360° me te kore e rerekē ngā āhuatanga o te tauira pūihi. Hei tāpiri, ka hangaia e te huinga pūihi he hihi e whiti ana ki waho mai i te huinga pūihi mā te whakaroa wā, ā, ka tutuki te mahi whānui.
Mō ētahi atu kōrero mō ngā antenna, tirohia:
Wā tuku: Pipiri-07-2024
