He aha teTāruarua?
He taputapu te pūrua-whakawhiti e āhei ai te whakawhitiwhiti kōrero ā-rua i runga i te hongere kotahi. I roto i ngā pūnaha whakawhitiwhiti kōrero reo irirangi, ka wehea te kaiwhiwhi mai i te tuku, me te tuku anō hoki i a rātou kia tohatoha i tētahi pūihi kotahi. He pūrua-whakawhiti te nuinga o ngā pūnaha tukurua reo irirangi.
Me mahi ngā whare takirua:
Me hoahoa kia whakamahia i roto i te roopu auau e whakamahia ana e te kaiwhiwhi me te tuku oro, ā, me āhei hoki ki te whakahaere i te mana putanga o te tuku oro.
Me whakarato i te whakakorenga tika o te haruru o te tuku i te auau whiwhi, ā, me hoahoa kia mahi i te wehenga auau i waenga i te tuku me te kaiwhiwhi, i raro iho rānei i te auau.
Kia nui te motuhaketanga hei ārai i te ngaro o te aro o te kaiwhiwhi.
Diplexer me te Duplexer. He aha te rerekētanga?
He taputapu kore-whakawhiti te diplexer e whakakotahi ana i ngā tāurunga e rua ki roto i tētahi putanga noa. He rerekē ngā momo auau o ngā tohu i ngā tāurunga 1 me te 2. Nō reira, ka taea e ngā tohu i ngā tāurunga 1 me te 2 te noho tahi i runga i te putanga me te kore e pokanoa tetahi ki tetahi. E mōhiotia ana hoki ko te whakakotahitanga whakawhiti-roopu. He taputapu kore-whakawhiti te duplexer e āhei ai te whakawhitiwhiti kōrero rua-aronga (duplex) o ngā auau tuku me ngā auau whiwhi i roto i te roopu kotahi i runga i te ara kotahi.
Ngā momoNgā taputapu takirua
E rua ngā momo taketake o ngā taputapu tāruarua: Band Pass me Band Reject.
Pūihi noa me te takirua
Ko te painga nui o te whakamahi i te pūihi takirua ko te taea e tātou te tuku me te whiwhi i te pūihi kotahi anake. He painga nui tēnei nā te mea he iti te wāhi kei runga i ngā pourewa i ngā teihana turanga.
I roto i ngā pūnaha hongere kotahi, ina kotahi anake te tuku me te kaiwhiwhi, he kōwhiringa māmā te whakamahi i tētahi pūihi takirua kia taea ai e rāua te tohatoha i tētahi pūihi kotahi. Heoi, ina whakaarohia ngā pūnaha maha-hongere me ētahi hongere tuku me te whiwhi kua whakakotahihia, ka uaua haere te āhuatanga.
Ko te ngoikoretanga matua o te whakamahi i ngā taputapu takirua i roto i ngā pūnaha maha-hongere ka kitea ina whakaarohia te whakawhitiwhiti whakawhiti. Koinei te whakaranu o ngā tohu tuku maha i runga i te pūihi.
Ngā pūihi Tx me Rx motuhake
Ki te whakamahia motuhaketia ngā pūihi tuku me ngā pūihi whiwhi, ka nui ake te wāhi e pau ana i te pourewa.
Ko te painga nui, ahakoa kei te puta tonu te whakawhitiwhitinga kore i te ara kotahi i waenga i ngā tohu kua tukuna, kāore he ara tika mō ēnei hua ki te tae atu.
te kaiwhiwhi. Engari, mā te wehewehe i waenga i ngā pūihi tuku me ngā pūihi whiwhi ka whakaratohia he parenga tāpiri. Mena kei te whakarite ngā kaituku me ngā kaiwhiwhi i roto i te āhua rārangi-tahi (arā: tetahi i runga ake i tetahi, ko te nuinga o te wā ko te pūihi whiwhi kei runga rawa i te pourewa), kātahi ka taea te whakatutuki i ngā wehewehe neke atu i te 50dB.
Hei whakamutunga, mō ngā pūnaha hongere kotahi, whakamahia he taputapu takirua. Engari mō ngā pūnaha hongere maha, ahakoa he nui ake te wāhi e pau ana i ia pourewa mā te whakamahi i ngā pūihi motuhake, koinei te kōwhiringa pakari ake. Ka tiakina pai ake tō pūnaha mai i te pokanoa nui mai i te whakawhitiwhiti kore mahi hei hua o aua hapa iti rawa, uaua hoki ki te wehe i te huihuinga, i te tiaki rānei.
UHF DuplexerKaupapa
Ko te hihiri i konei he whakaora i te tāutanga o te taura ki roto i te kāinga.
I te hanganga o tōku whare, i tāutahia he taura taka kotahi mai i te tuanui ki te rūma noho, he mea huna ki roto i te pakitara kōhao. Ka haria e tēnei taura ngā hongere pouaka whakaata DVB mai i te pūihi tuanui ki te pouaka whakaata i te rūma noho. He pouaka pouaka whakaata taura anō hoki tāku i te rūma noho e hiahia ana ahau ki te tohatoha huri noa i te whare, ā, ko te whakakaha tohatoha he mea pai kia whakanohoia ki te tuanui kia ngāwari ai te uru atu ki ngā rūma katoa. Nō reira, mā te whakamahi i te Duplexer i ia pito o te taura taka ka taea e ia te kawe i te DVB-TV ki raro i te coax me te Cable-TV ki runga i te coax i te wā kotahi, mena ka whiriwhiria e au he Auautanga e tika ana mō te tohatoha Cable-TV.
Ka tīmata ngā Pouaka Whakaata Maha i te 739MHz, ā, ka toro atu ki te 800MHz. Ka taea te whakarite i te tohatoha Pouaka Whakaata Taura mai i te 471-860 MHz. Nō reira, ka whakatinanahia e au he wāhanga iti-haere hei kawe i te Pouaka Whakaata Taura ki runga i te coax i te ~488MHz, me tētahi wāhanga teitei-haere hei kawe i te Pouaka Whakaata DVB ki raro. Ka kawe hoki te wāhanga iti-haere DC hei whakakaha i te amp tohatoha i roto i te tuanui me ngā waehere mana mamao Magic-eye ki raro i te pouaka Pouaka Whakaata Taura.
Ka taea hoki e mātou te whakarite i te Cavity Duplexer kia rite ki ō hiahia. Ka taea e koe te tomo ki te whārangi whakaritenga hei whakarato i ngā whakaritenga e hiahiatia ana e koe.
Wā tuku: Hepetema-24-2022
