He taputapu āwhina ngā Multiplexers me ngā Power Dividers hei whakanui ake i te maha o ngā pūihi ka taea te hono atu ki te tauranga o te kaipānui kotahi. Ko tētahi o ngā painga matua ko te whakaiti i te utu o tētahi tono UHF RFID mā te tohatoha i ngā taputapu utu nui. I roto i tēnei pou rangitaki, ka whakamāramahia e mātou ngā rerekētanga me ngā mea hei whakaaroarohia i te wā e whiriwhiri ana i te taputapu tika mō tō tono.
He aha te multiplexer me te de-multiplexer?
Hei mārama ake he aha te Pūwhakaranu Pānui RFID, ka whakamāramahia e mātou te mahi whānui o ngā pūwhakaranu (mux) me ngā pūwhakakore-whakaranu (de-mux).
He taputapu te multiplexer e tīpako ana i tētahi o ngā tohu tāuru maha, ka tukuna atu ki tētahi putanga.
He taputapu te demultiplexer e tuku ana i tētahi tohu tāuru ki tētahi o ngā putanga maha.
Me whakamahi ngā pana mō te multiplexer me te de-multiplexer hei tīpako i ngā tāuru me/ranei ngā putanga. He mana tō ēnei pana, nō reira he taputapu hohe te mux me te de-mux.
He aha te pūwhakanui pānui RFID?
He taputapu te pūwhakarea pānui RFID he huinga o te mux me te de-mux. Kotahi te tauranga tāuru/putanga me ngā tauranga putanga/tāuru maha. Kotahi te tauranga o te mux/de-mux e honoa ana ki te kaipānui RFID, ko ngā tauranga maha e whakatapua ana mō te hononga pūihi.
Ka tukuna te tohu mai i te tauranga o te kaipānui RFID ki tētahi o ngā tauranga putanga maha, ka tukuna rānei ngā tohu mai i tētahi o ngā tauranga tāuru maha ki te tauranga o te kaipānui RFID.
Mā te pana kua hangaia ki roto e tiaki te whakawhiti tohu i waenga i ngā tauranga me tōna wā pana.
Mā te pūwhakarea RFID ka taea te hono atu i ngā pūihi maha ki tētahi tauranga kotahi o te kaipānui RFID. Kāore e tino pāngia te rahi o te tohu kua whakawhitia, ahakoa te maha o ngā tauranga i roto i te mux/de-mux.
Pērā ai, ka taea e te pūwhakarea RFID 8-tauranga, hei tauira, te whakawhānui i te kaipānui RFID 4-tauranga ki te kaipānui RFID 32-tauranga.
Ka karangahia hoki e ētahi waitohu ā rātou mux he hub.
He aha te wehewehe mana (wehewehe mana) me te whakakotahi mana?
He taputapu wehewehe mana te wehewehe mana (splitter) e wehewehe ana i te mana. Ka wehewehea e te wehewehe mana 2-tauranga te mana whakauru kia rua ngā putanga. Ka haurua te rahi o te mana i roto i ngā putanga.
Ka kiia te wehewehe mana he whakakotahi mana ina whakamahia whakamuri.
Anei tētahi tirohanga poto mō ngā rerekētanga i waenga i te mux me te wehewehe mana:
| MUX | WEHEWEHE MANA |
| Ahakoa te maha o ngā tauranga, ka mau tonu te ngaronga hiko o te mux puta noa i ngā tauranga. Kāore he rerekētanga o ngā ngaronga hiko o te mux 4-tauranga, 8-tauranga, me te 16-tauranga mō ia tauranga. | Mā te wehewehe mana ka wehea te mana kia ½, kia ¼ rānei, i runga i te maha o ngā tauranga e wātea ana. Ka nui ake te hekenga mana i ia tauranga ina piki ake te maha o ngā tauranga. |
| He taputapu hohe te mux. Me whakamahi te mana DC me ngā tohu whakahaere hei whakahaere. | He taputapu kore mahi te wehewehe mana. Kāore e hiahiatia he tāuru tāpiri atu i te tāuru RF. |
| Kāore e taea te whakakā i ngā tauranga katoa i roto i te mux maha-tauranga i te wā kotahi. Ka whakawhitihia te mana RF i waenga i ngā tauranga. Kotahi anake te pūihi hono ka whakakahangia i te wā kotahi, ā, he tere rawa te tere whakawhiti, ā, kāore e ngaro i ngā pūihi te pānui tohu. | Ka whiwhi ōrite te mana i ngā tauranga katoa i roto i te whakawehe mana maha-tauranga i te wā kotahi. |
| Ka tutuki te wehenga tino teitei i waenga i ngā tauranga. He mea nui tēnei kia kore ai e puta he pānui whakawhiti-tohu i waenga i ngā pūihi. Ko te wehenga kei roto i te awhe o te 35 dB, neke atu rānei. | He iti ake te wehewehenga o te tauranga ki te whakaritea ki te Mux. Ko te wehewehenga tauranga noa he tata ki te 20 dB, neke atu rānei. Tērā pea ka raru te pānui tohu whakawhiti. |
| He iti noa iho, kāore rānei he pānga ki te hihi, ki te whakakorenga rānei o te pūihi. | Ki te kore te whakawehe mana e whakamahia tika ana, ka taea te whakakore i ngā āpure RF, ā, ka taea hoki te whakarerekē nui i te hihi RF o te pūihi. |
| Kāore e hiahiatia he tohungatanga RF hei tāuta i tētahi Mux. Me whakahaere te Mux e te pūmanawa a te kaipānui RFID. | He mea nui te tohungatanga RF hei tāuta i ngā wehewehe hiko, hei whakatutuki hoki i tētahi otinga mahi. Mēnā ka tāuta hētia te wehewehe hiko, ka tino pā kino te mahi a te RF. |
| Kāore e taea te whakarerekē i te pūihi ritenga | Ka taea te whakarerekē i te pūihi ritenga. Ka taea te whakarerekē i te whānui o te hihi o te pūihi, te koki hihi, me ētahi atu. |
He whānuitanga ngā momo ngaruiti a Si Chuan Keenlion, e kapi ana i ngā auau mai i te 0.5 ki te 50 GHz. Kua hangaia hei whakahaere i te mana whakauru mai i te 10 ki te 200 watts i roto i te pūnaha tuku 50-ohm. Ka whakamahia ngā hoahoa poka, ā, ka arotauhia kia pai ai te mahi.
He maha ā mātou hua kua hangaia kia taea ai te whakamau ki runga i te whakamahana hiko mā te whakamahi i te wiri, ki te mea e tika ana. He tino pai hoki te taurite o te kaha me te āhua, he kaha te whakahaere i te mana, he tino pai ngā taumata wehewehe, ā, he pakari te takai.
Ka taea hoki e mātou te whakarite i te hua rf passive kia rite ki ō hiahia. Ka taea e koe te whakauru i tewhakaritengawhārangi hei whakarato i ngā whakaritenga e hiahiatia ana e koe.
Wā tuku: Oketopa-28-2022
