QC-GPS-003 anteeno dielectric LNA / filter

Anteenada dielectric waxay leedahay tilmaamo aad u wanaagsan oo leh inta jeer ee xarunta 1575.42MHz ± 3 MHz si loo hubiyo soo-dhoweynta ugu fiican.VSWR waa 1.5: 1 baladhiskuna waa ± 5 MHz, isagoo hubinaya isku xirnaanta xasilloon oo hufan ee satalaytka GPS.Xakamaynta 50-ohm waxay sii kordhisaa gudbinta calaamadaha.

Anteenadu waxay ku salaysan tahay diyaarad dhulka ah 7x7cm waxayna leedahay faa'iidada ugu sarreysa oo ka badan 3dBic.Waxay bixisaa caymis heer sare ah, hubinta faa'iidada ugu yar ee -4dBic at -90 ° iyo +90 °, oo daboolaya in ka badan 75% mugga qalabka.Polarization-ku waa polarization-ka gacanta midig (RHCP), kaas oo wanaajinaya soo dhawaynta ishaarada ee satalaytka jiho kasta.

LNA/shaandhaynta waxay dhamaystiraysaa anteenada dielectric si loo sii wanaajiyo waxqabadka.Iyada oo leh 28dB faa'iido (oo aan lahayn fiilo) iyo jaantus hoose oo 1.5dB ah, waxay kordhisaa calaamadaha GPS ee daciifka ah waxayna yaraynaysaa faragelinta dhawaaqa, taas oo kor u qaadaysa caddaynta iyo saxnaanta.

LNA/filter-ku waxa kale oo uu leeyahay filtarrada tayada sare leh si loo yareeyo faragelinta ka baxsan kooxda.Waxa ay bixisaa ugu yaraan 7dB ee attenuation at f0+/-20MHz, ugu yaraan 20dB at f0+/- 50MHz, iyo 30dB cajiib ah oo hoos u dhigista f0+/- 100MHz.Tani waxay hubinaysaa calaamada GPS-ka oo cad oo tayo sare leh, xitaa meelaha dadku ku badan yahay iyo buuqa.

VSWR ee LNA/shaandhaynta ayaa ka yar 2.0, kaas oo dammaanad qaadaya khasaaraha soo laabashada hooseeya si loo kordhiyo waxtarka gudbinta signalka oo loo yareeyo hoos u dhigista calaamadaha.