Enothi lwangaphandle ukuze 3G-imodemu - isicelo yezimbangela kudivayisi

Njalo umuntu usezuze 3G-imodemu, manje noma ngokuhamba kwesikhathi ibhekene nenkinga abampofu isignali reception. Ezingeni layo ongaphakeme kungasiza antenna sangaphandle 3G-imodemu. Ukusetshenziswa Its kakhulu kwandisa izinga isignali eyamukelwe. Kwangaphandle antenna 3G-imodemu ivumela izikhathi eziningana ukuze kusheshiswe ukudluliswa ulwazi yasekuqaleni. Wenza ngokuphazima kweso. Kulokhu, adaptha non-contact. Bayoba kabusha zingawubangi isiginali kusuka imodemu kuya-antenna yangaphandle, noHezekeli. Okungukuthi, scheme jikelele imi kanje: ulidinga antenna sangaphandle 3G-imodemu kanye yangaphakathi antenna RF izinga ikhebula coaxial kokuba attenuation Coefficient elincane 2100 MHz. Konke lokhu kungenziwa sithengwe esitolo okukhethekile, kodwa ungenza ngokwakho nedivayisi yangaphandle.

design elula

antenna kwangaphandle 3G-imodemu ngezandla zakho - akusiwona kanzima. Omunye okuhlukile lo mklamo inikezwa kwi-inthanethi kaningi. Lokhu antenna Kharchenko 3G-imodemu. Ibizwa nangokuthi "eziyisishiyagalombili" ngoba ukuma sici. Isisekelo kuba Kharchenko waveguide, eziyisishiyagalombili efana rhombuses ezimbili, lapho umbhali ezihlongozwayo ukuthola izinhlelo zethelevishini ngokungenanjongo ku uhla UHF. Nokho, ukusebenzisa kwayo njengoba 3G isignali umamukeli kuyodingeka wenze izinguquko ezithile endleleni umklamo. Kuyokusiza ukuba uqinise isignali uma kunjalo. Nxa isitshengiselo GSM alikho jikelele, kungcono ukusebenzisa samuntu ezahlukene, kwakheka ngesisekelo antenna satellite. "Eight" ukwenza ka zethusi wire 4mm², okuyinto zingathengwa iyiphi E-esitolo. Kusukela umamukeli wire iluphu insaliwe. Lokhu - amadayimane ezimbili izinhlangothi 53 mm nama-engeli amabili 120 ° ohlangothini vertices rhombuses. "Eight ayixhunyiwe esikhungweni njengoba pullback - sibalo, kuba nomoya igebe 5 mm, futhi lokhu kubalulekile. wesifunda semikhawulweni zivaliwe ngo nokunamathisela ngomthofu. Aluminium ishidi 2 mm ipuleti obukhulu juqa 140x140 mm, okuyinto uyokwenza njengoba kugqame. Maphakathi emgodini ipuleti yamba for the ikhebula nge ububanzi 8-10 mm. Circuit aboshelwe 36 mm ngaphezu kugqame. Wayengumuntu ndawo ukuba naye. Ngenxa yalesi womdlalo yazalwa Kwe-dielectric Heating. Zingaba plastic. Manje kudingeka unqume indlela odongeni-ukukhweza ongakhetha. Ungasebenzisa ubakaki kusukela satellite dish. Ikhebula antenna is soldered. Kunconywa ukusebenzisa ikhebula coaxial 75 Ohm. Nokho, kwacaca ukuthi empirically ukuthi lapho reception wave 2100m Hz, okuhambelana HSDPA ejwayelekile, isiginali amandla ekhiqizwa yokuthi uma ukumelana ngenhla ohms 50 kweso onakala. Ngakho okuphakanyiswe sebenzisa intambo nge impedance ka ohms 50. ucingo ezinjalo zingase wenza ngokuphelele zethusi, futhi kulula ukunamathisela nokunamathisela ngomthofu. Idivayisi kumele afakwe bese ziboshelwa endaweni. Ngesikhathi komunye umkhawulo ikhebula wenziwa ukufanisa. Lokhu kuzodinga ucwecwe zethusi. Lokhu ucwecwe ingatholakala ukuliqaqa transformer ubudala, noma nje uyithenga kusuka umthengisi. Ucwecwe senziwa icala eyinqaba. Enye uhlangothi ikhava ukuba 45 mm. Ikesi ayihlali ngokuqinile umzimba 3G amadivayisi zethu.

Ukuze aluka izintambo kudingeka ucezu ucwecwe ubukhulu 27h76 mm. Eluka is soldered kule ucezu ucwecwe ukuthi ihlanganisa ikhava, kodwa akukho lapho akubahluphi kuye, futhi umnyombo ngezintambo soldered ukuba ikhava ngokwaso. Kodwa-ke futhi akufanele ngqo uthinte komzimba imodemu. Eqinisweni, i-antenna sangaphandle 3gG-imodemu ilungele ukusebenza. Manje kudingeka nje ukulilungiselela ngokumane turning eNtabeni beyofuna kangcono isignali reception.