Umgangatho wepowder ceramic kunye nenkqubo ye-sintering ichaphazela ngokuthe ngqo ukusebenza kwe-antenna yegps.I-ceramic patch esetyenziswa ngoku kwimarike ubukhulu becala yi-25×25, 18×18, 15×15, kunye ne-12×12.Ubukhulu bendawo yepetshi ye-ceramic, kokukhona i-dielectric ingaguquki, iphezulu i-resonant frequency, kwaye ingcono isiphumo se-eriyali ye-GPS.
Umaleko wesilivere kumphezulu we-eriyali ye-ceramic unokuchaphazela i-resonant frequency ye-eriyali.Indawo efanelekileyo ye-GPS ye-ceramic chip frequency yi-1575.42MHz, kodwa i-eriyali frequency ichatshazelwa lula yimeko engqongileyo, ngakumbi ukuba idityaniswe kumatshini wonke, i-coating yesilivere yomphezulu kufuneka ihlengahlengiswe.Ubuninzi be-eriyali yokukhangela ye-GPS inokuhlengahlengiswa ukuze kugcinwe imilo ye-eriyali yokukhangela ye-GPS kwi-1575.42MHz.Ke ngoko, umenzi womatshini opheleleyo we-GPS kufuneka asebenzisane nomenzi we-eriyali xa kuthengwa i-eriyali, kwaye anike isampulu yomatshini opheleleyo wovavanyo.
Indawo yokutya ichaphazela ukusebenza kwe-antenna yegps
I-antenna ye-ceramic iqokelela isignali ye-resonant kwindawo yokutya kwaye iyithumele ekupheleni.Ngenxa yento yokudibana kwe-antenna, indawo yokutya ayibikho embindini we-eriyali, kodwa ihlengahlengiswe kancinane kwicala le-XY.Le ndlela yokulinganisa i-impedance ilula kwaye ayinyusi Iindleko, ukuhamba kuphela kwicala le-antenna enye ibizwa ngokuba yi-eriyali ecalanye, kwaye ukuhamba kuzo zombini ii-axes kubizwa ngokuba yi-eriyali enamacala amabini.
Ukwandisa isiphaluka kuchaphazela ukusebenza kwe-antenna yegps
Ubume kunye nommandla we-PCB ephethe i-eriyali ye-ceramic, ngenxa yobume be-GPS ephindaphindayo, xa imvelaphi i-7cm x 7cm yomhlaba ongaphazamisekiyo, ukusebenza kwe-antenna ye-patch kunokwandiswa.Nangona ithintelwe yimbonakalo kunye nesakhiwo, zama ukuyigcina ngokufanelekileyo Indawo kunye nokuma kwe-amplifier zifana.Ukukhethwa kwenzuzo yesekethe ye-amplifier kufuneka ihambelane nokuzuza kwe-LNA yangasemva.I-GSC 3F ye-Sirf ifuna ukuba inzuzo iyonke phambi kokuba igalelo lomqondiso lingadluli kwi-29dB, ngaphandle koko i-antenna yokukhangela i-antenna ye-GPS iya kuba yi-oversaturated kwaye i-self-excited.I-antenna ye-GPS ineeparamitha ezine ezibalulekileyo: I-Gain, i-Standing Wave (VSWR), i-Noise Figure, kunye ne-Axial Ratio, phakathi kwayo i-Axial Ratio igxininiswe ngokukhethekileyo, nto leyo ingumlinganiselo wenzuzo yesignali yomshini wonke kwiindlela ezahlukeneyo.isalathisi esibalulekileyo somahluko.Ekubeni iisathelayithi zisasazwa ngokungacwangciswanga kwisibhakabhaka se-hemispherical, kubaluleke kakhulu ukuqinisekisa ukuba ii-eriyali zineemvakalelo ezifanayo kuzo zonke iindlela.Umlinganiselo we-axial uchaphazelekayo ngokusebenza kwe-antenna ye-GPS, ukubonakala kunye nesakhiwo, isiphaluka sangaphakathi somatshini wonke, kunye ne-EMI.
Ixesha lokuposa: Oct-27-2022