Kuti akwaniritse mapulogalamuwa mosavuta, Jingxin imapanga zosefera zomwe zingagwiritsidwe ntchito kuti kasitomala azitha kukonza yekha, ndipo amapereka chitsogozo kuti asinthe bwino ngati chitsanzo chotsatira cha VHF fyuluta.
1. Kukonzanso ndondomeko yachosefera chothekaJX-SF1-152174-215N
Zosefera zidapangidwa kuti zizitha kuyimba pamlingo wa 15 MHz ndipo zimakhala ndi bandwidth wamba ya 8 MHz.
2. Zida zofunika
Network analyzer yomwe imatha kuwonetsa kutayika kwa kuyika ndi kubwereranso.
Mkati mwa passband, kutayika koyika kuyenera kukhala ≤ 1.7dB; kutaya kubwerera kuyenera kukhala ≥20dB
Zida Zam'manja: 6mm lotseguka-mapeto sipikala; Zowongoka screwdriver
3. Njira Yosinthiranso
Njirayi ifotokoza njira yomwe idagwiritsidwa ntchito pamagawo omwe adasinthidwa kale kufupipafupi kwapakati pa 160.3MHz, ndi bandwidth 8 MHz.
Monga momwe chithunzi 1 chikusonyezera, zomangira za resonator zimasankhidwa ngati F1, F2, F3, F4, ndi F5. Zomangira izi zimatsimikizira kuchuluka kwapakati pa mtengo uliwonse, pomwe zomangira zikuyenda mkati, ma frequency amakhala otsika, pomwe zomangira zimasunthira kunja, ndipo ma frequency amakhala apamwamba.
F12, F23, F34, F45 ndi zomangira zomangira, zomangira izi zimatsimikizira bandwidth ya passband, zomangira zimasunthira mkati, ndipo zimatha kukulitsa mbali yakumanja ya passband, zomangira zakunja zimatha kutsitsa kumanja kwa passband.
Chithunzi 1
Khwerero 1: Lumikizani fyuluta JX-SF1-152174-215N ku analyzer yosinthidwa, monga momwe chithunzi 2 chikusonyezera.
Chithunzi 2
Khwerero 2: Khazikitsani ma frequency ofunikira a 160.3MHz ndi bandwidth ya 8MHz
Khwerero 3: Kuthamanga koyambirira kwa 160.3MHz ± 4MHz, kukana kwakunja kwa gulu pafupipafupi 160.3 ± 9MHz ndi 160.3 ± 14MHz kumatha kuwoneka mumitundu yama frequency band, monga momwe chithunzi 3 chikusonyezera.
Chithunzi 3
♦Masitepe otsatirawa ndi njira yowonongeka yapakati pafupipafupi kuchokera ku 160.3MHz mpaka152MHz
1) Mafupipafupi amapita kuchokera pamwamba mpaka pansi, motsatana atembenuza zomangira wotchi F1, F2, F3, F4, F5 kuti 152MHz ± 4MHz, zonse zomangira ikukonzekera kusuntha mkati, pafupipafupi patsekeke adzasuntha wonse kuchokera pamwamba mpaka otsika, ndi passband. imasunthira kumanzere.
Chithunzi 4 chikuwonetsa kusintha kwa wononga kulikonse kwa 152MHz ± 4MHz.
Chithunzi 4
1) Pambuyo pozungulira kuti musinthe wononga F5, pitirizani kugwiritsa ntchito 6mm spanner kumasula nati pang'ono; screwdriver imazungulira zomangira zopangira, sinthani kubwereranso ku mtengo wotchulidwa, Ngati kutayika kwa kuika ndi kubwerera kumanzere sikungathe kufika pamtengo womwe watchulidwa, kutayika kwa kuyika ndi kubweza kungathe kuchepetsedwa pozungulira koloko kapena kubwereza zomangira zomangira F12, F23, F34 ndi F45, monga momwe chithunzi 5 chikusonyezera.
Chithunzi 5
Chithunzi 6 ndi chithunzi chathunthu chapakati pafupipafupi pa 152MHz; bandwidth ndi 8MHz
Chithunzi 6
♦Njira zotsatirazi ndi debugging ndondomeko chapakati pafupipafupi kuchokera160.3MHzku174MHz
1）Mafupipafupi amachokera kumunsi kupita kumtunda, motsatana tembenuzani zomangira zowotcherera F1, F2, F3, F4, F5 to174MHz ± 4MHz, zomangira zonse zimasunthira kunja, mafupipafupi a mtsempha amasuntha kuchokera kumunsi kupita kumtunda, chiphasocho chimayenda. Kumanja.
Chithunzi 7 chikuwonetsa kusintha kwa wononga kulikonse kwa 174MHz ± 4MHz
Chithunzi 7
2）Mutatha kuzungulira ku potoza F5, pitirizani kugwiritsa ntchito 6mm spanner kumasula nati pang'ono; screwdriver imazungulira zomangira, sinthani kubwereranso kumtengo wotchulidwa, Ngati kutayika kwa kuyika ndi kubwereranso sikungathe kufika pamtengo womwe watchulidwa, kutayika kwa kuika ndi Kubwereranso kungathe kuchepetsedwa pozungulira mozungulira kapena motsatana ndi zomangira zomangira F12, F23, F34 ndi F45, monga momwe chithunzi 8 chikusonyezera.
Chithunzi 8
Chithunzi 9 ndi graph wathunthu wa pafupipafupi pakati pa 166.7MHz; bandwidth ndi 8MHz
Chithunzi 9
Nthawi yotumiza: Sep-30-2021
