GPS antenna ntchito

GPS antenna ntchito

Tikudziwa kuti GPS locator ndi malo oikirapo kapena kuyenda polandila ma satelayiti.Polandira zizindikiro, mlongoti uyenera kugwiritsidwa ntchito, choncho timatcha mlongoti umene umalandira chizindikirocho kukhala GPS.Zizindikiro za satellite za GPS zimagawidwa mu L1 ndi L2, ndi ma frequency a 1575.42MHZ ndi 1228MHZ motsatana, pomwe L1 ndi chizindikiro chotseguka cha anthu okhala ndi polarization yozungulira.Mphamvu ya chizindikiro ndi pafupifupi 166-DBM, yomwe ndi chizindikiro chofooka.Makhalidwewa amatsimikizira kuti tinyanga zapadera ziyenera kukonzekera kulandira ma siginecha a GPS.

1. Pepala la Ceramic: Ubwino wa ufa wa ceramic ndi ndondomeko ya sintering zimakhudza mwachindunji ntchito yake.Mapepala a ceramic omwe amagwiritsidwa ntchito panopa pamsika ndi 25 × 25, 18 × 18, 15 × 15 ndi 12 × 12.Kukula kwakukulu kwa pepala la ceramic, kumakhala kokulirapo kwa dielectric, kukweza ma frequency a resonance, komanso kuvomereza bwino.Zambiri mwa zidutswa za ceramic ndizopanga masikweya, kuti zitsimikizire kuti mayendedwe a XY ndi ofanana, kuti akwaniritse zotsatira za kusonkhanitsa nyenyezi.

2. Siliva wosanjikiza: Siliva wosanjikiza pamwamba pa mlongoti wa ceramic amatha kukhudza ma frequency a resonant antenna.Malo abwino kwambiri a GPS ceramic chip amagwera ndendende pa 1575.42MHz, koma ma frequency a antenna amakhudzidwa mosavuta ndi malo ozungulira, makamaka akasonkhanitsidwa pamakina onse, ma frequency point amayenera kusinthidwa kuti azikhala 1575.42MHz posintha mawonekedwe a zokutira pamwamba pa siliva..Chifukwa chake, opanga makina athunthu a GPS akuyenera kugwirizana ndi opanga tinyanga pogula tinyanga ndikupereka zitsanzo zamakina zoyeserera.

3. Malo odyetsera: Mlongoti wa ceramic umatenga chizindikiro cha resonance kudzera pa malo odyetsa ndikutumiza kumapeto.Chifukwa cha kufananiza kwa mlongoti, malo odyetsera nthawi zambiri sakhala pakatikati pa mlongoti, koma amasinthidwa pang'ono momwe akulowera ku XY.Njira yofananira yofananira yotereyi ndiyosavuta ndipo siyimawonjezera mtengo.Kusuntha mu axis imodzi kumatchedwa mlongoti wokondera umodzi, ndipo kusuntha mu nkhwangwa zonse kumatchedwa kupendekera pawiri.

4. Kukulitsa dera: mawonekedwe ndi malo a PCB atanyamula mlongoti wa ceramic.Chifukwa cha mawonekedwe a GPS rebound, pomwe kumbuyo ndi 7cm × 7cm

Mlongoti wa GPS uli ndi magawo anayi ofunikira: phindu (Gain), stand wave (VSWR), chithunzi cha phokoso (chiwerengero cha Phokoso), chiŵerengero cha axial (Chiŵerengero cha Axial).Pakati pawo, chiwerengero cha axial chikugogomezedwa makamaka, chomwe ndi chizindikiro chofunikira choyezera kusiyana kwa phindu la chizindikiro cha makina onse mosiyanasiyana.Popeza ma satelayiti amagawidwa mwachisawawa mumlengalenga wa hemispherical, ndikofunikira kwambiri kuwonetsetsa kuti tinyanga timakhala ndi chidwi chofanana mbali zonse.Chiŵerengero cha Axial chimakhudzidwa ndi machitidwe a antenna, mawonekedwe a mawonekedwe, dera lamkati ndi EMI ya makina onse.