Ikhwalithi ye-ceramic powder kanye nenqubo ye-sintering ithinta ngokuqondile ukusebenza kwe-antenna ye-gps. I-ceramic patch esetshenziswa njengamanje emakethe ikakhulukazi i-25×25, 18×18, 15×15, kanye ne-12×12. Lapho indawo yesichibi se-ceramic ibe nkulu, iba nkulu i-dielectric engaguquki, iyanda imvamisa ye-resonant, futhi iba ngcono nomphumela wokwamukela i-antenna ye-GPS.
Ungqimba lwesiliva olungaphezulu kwe-antenna ye-ceramic lungathinta imvamisa yokuzwakala kwe-antenna. Imvamisa ye-chip ye-ceramic ye-GPS ilingana ncamashi ne-1575.42MHz, kodwa imvamisa ye-antenna ithintwa kalula indawo ezungezile, ikakhulukazi uma ihlanganiswe kuwo wonke umshini, ukunamathela okusiliva kufanele kulungiswe. Imvamisa ye-antenna yokuzulazula ye-GPS ingashintshwa ukuze kugcinwe ukwakheka kwe-antenna yokuzula ye-GPS ku-1575.42MHz. Ngakho-ke, umenzi womshini ophelele we-GPS kufanele abambisane nomkhiqizi wezimpondo lapho uthenga uthi, futhi anikeze isampula lomshini eliphelele ukuze lihlolwe.
Iphoyinti lokuphakelayo lithinta ukusebenza kwe-antenna ye-gps
I-antenna ye-ceramic iqoqa isignali enomsindo ngephoyinti lokuphakelayo bese iyithumela ekugcineni okungemuva. Ngenxa yesici sokumadanisa kwe-antenna, iphoyinti lokuphakelayo ngokuvamile alikho enkabeni ye-antenna, kodwa lilungiswe kancane lapho liqonda khona i-XY. Le ndlela yokufanisa i-impedance ilula futhi ayinyusi Izindleko, ukuhamba kuphela ohlangothini lwe-eksisi eyodwa kubizwa ngokuthi i-antenna echemile eyodwa, futhi ukuhamba kuzo zombili izimbazo kubizwa ngokuthi i-antenna echema kabili.
Isekhethi yokukhulisa ithinta ukusebenza kwe-antenna ye-gps
Umumo nendawo ye-PCB ephethe i-antenna ye-ceramic, ngenxa yemvelo yokuphindaphinda kwe-GPS, lapho ingemuva liyi-7cm x 7cm yomhlabathi ongaphazamiseki, ukusebenza kwe-patch antenna kungakhuliswa. Nakuba ivinjelwe ukubukeka nesakhiwo, zama ukuyigcina ngokufanelekile Indawo nokuma kwe-amplifier kufana. Ukukhethwa kwenzuzo yesekethe ye-amplifier kumele kufane nenzuzo ye-LNA engemuva. I-GSC 3F ye-Sirf idinga ukuthi inzuzo ephelele ngaphambi kokufaka isignali akufanele idlule u-29dB, ngaphandle kwalokho isignali ye-antenna yokuzulazula ye-GPS izogcwala ngokweqile futhi izijabulise ngokwayo. I-antenna ye-GPS inezinhlaka ezine ezibalulekile: I-Gain, Standing Wave (VSWR), Noise Figure, kanye ne-Axial Ratio, phakathi kwayo i-Axial Ratio igcizelelwa ngokukhethekile, okuyisilinganiso sokuzuza kwesignali yawo wonke umshini ngezindlela ezihlukene. inkomba ebalulekile yomehluko. Njengoba amasathelayithi asatshalaliswa ngokungahleliwe esibhakabhakeni esiyi-hemispherical, kubaluleke kakhulu ukuqinisekisa ukuthi ama-antenna anokuzwela okufanayo kuzo zonke izinhlangothi. Isilinganiso se-axial sithintwa ukusebenza kwe-antenna ye-GPS, ukubukeka nokwakheka, ukujikeleza kwangaphakathi kwawo wonke umshini, kanye ne-EMI.
Isikhathi sokuthumela: Oct-27-2022