Kodi ndi zinthu ziti zomwe zimakhudza magwiridwe antchito a tinyanga ta GPS?

Ubwino wa ufa wa ceramic ndi ndondomeko ya sintering zimakhudza mwachindunji ntchito ya gps antenna. Chigamba cha ceramic chomwe chikugwiritsidwa ntchito pano pamsika ndi 25×25, 18×18, 15×15, ndi 12×12. Kukula kwa gawo la chigamba cha ceramic, kukulirakulira kwa dielectric pafupipafupi, kukwezera ma frequency a resonant, komanso kulandila kwa GPS kwa antenna.

Siliva pamwamba pa mlongoti wa ceramic imatha kukhudza ma frequency a resonant antenna. Njira yabwino ya GPS ceramic chip frequency ndi 1575.42MHz, koma ma frequency a antenna amakhudzidwa mosavuta ndi malo ozungulira, makamaka ngati atasonkhanitsidwa pamakina onse, zokutira zasiliva ziyenera kusinthidwa. Mafupipafupi a mlongoti wa GPS navigation amatha kusinthidwa kuti asunge mawonekedwe a GPS navigation antenna pa 1575.42MHz. Chifukwa chake, wopanga makina athunthu a GPS akuyenera kugwirizana ndi wopanga mlongoti pogula mlongoti, ndikupereka chitsanzo chathunthu cha makina oyesa.

Malo odyetserako amakhudza machitidwe a gps antenna
Mlongoti wa ceramic umatenga chizindikiro cha resonant kudzera pamalo odyetsa ndikutumiza kumapeto. Chifukwa cha kufanana kwa mlongoti wofananira, malo odyetsera nthawi zambiri sakhala pakatikati pa mlongoti, koma amasinthidwa pang'ono momwe akulowera ku XY. Njira yofananira iyi ndi yosavuta ndipo siyikuwonjezera Mtengo, kusuntha molunjika ku olamulira amodzi kumatchedwa mlongoti wokondera umodzi, ndipo kusuntha mu nkhwangwa zonse ziwiri kumatchedwa mlongoti wokondera pawiri.

Kukulitsa dera kumakhudza magwiridwe antchito a gps antenna
Mawonekedwe ndi dera la PCB yonyamula mlongoti wa ceramic, chifukwa cha momwe GPS imabwereranso, kumbuyo kwake kuli 7cm x 7cm osasokonezeka, ntchito ya chigambacho imatha kukulitsidwa. Ngakhale zimaletsedwa ndi maonekedwe ndi mawonekedwe, yesetsani kusunga bwino Malo ndi mawonekedwe a amplifier ndi yunifolomu. Kusankhidwa kwa phindu la dera la amplifier kuyenera kufanana ndi phindu la LNA lakumbuyo. GSC 3F ya Sirf imafuna kuti chiwongolero chonse chisanalowe chizindikiritso chisapitirire 29dB, apo ayi chizindikiro cha mlongoti wa GPS chidzakhala chodzaza ndi chisangalalo. Mlongoti wa GPS uli ndi magawo anayi ofunikira: Kupeza, Kuyimirira Wave (VSWR), Chithunzi cha Noise, ndi Axial Ratio, pakati pawo Axial Ratio imatsindika kwambiri, yomwe ndi muyeso wa kupindula kwa chizindikiro cha makina onse mbali zosiyanasiyana. chizindikiro chofunika cha kusiyana. Popeza ma satelayiti amagawidwa mwachisawawa mumlengalenga wa hemispherical, ndikofunikira kwambiri kuwonetsetsa kuti tinyanga tating'onoting'ono timakhala ndi kumverera kofanana mbali zonse. Chiŵerengero cha axial chimakhudzidwa ndi kagwiridwe ka mlongoti wa GPS, maonekedwe ndi kapangidwe kake, kuzungulira kwa mkati mwa makina onse, ndi EMI.