GPS/GSM组合天线 GPS/GSM

（i）dielectric antenna
center frequency 1575.42mhz±3 mhz
v.s.w.r 1.5:1
band width ±5 mhz
impedance 50 ohm
peak gain ＞3dbic based on 7×7cm ground plane
gain coverage ＞-4dbic at -90°＜0＜+90°(over 75% volume)
polarization rhcp
（ii）gsm antenna
center frequency 850/1900mhz or 900/1800mhz
v.s.w.r 2.0:1
impedance 50 ohm
typical gain2dbi+/-1db@850mhz;2dbi+/-1db@900mhz;
1dbi+/-1db@1800mhz;1dbi+/-1db@1900mhz
（iii）lna/filter
lna gain(without cable) 28db typical
noise figure 1.5db
filter out band attenuation (f0=1575.42 mhz)
7db min f0+/-20mhz ;
20db min f0+/-50mhz;
30db min f0+/-100mhz
v.s.w.r ＜2.0
dc voltage 2.7v/3.0v/3.3v/5.0v/3.0v to 5.0v/other
dc current 11ma max
（iv）mechanical
weight ＜240gram
size 65mm x 38.5mm x37mm
cable gps-----rg174 2meter, 5meter long or other
gsm-----rg174 2meter, 5meter long or other
connector gps-----sma/smb/smc/bnc/fme/tnc/mcx /mmcx or other
gsm----sma/smb/smc/bnc/fme/tnc/mcx/mmcx or other
mounting screw mounting
housing black
（v） environmental
working temp. -40℃~+85℃
storage temp. -45℃~+100℃
vibration sine sweep 1g(0-p)10~50~10hz each axis
humidity humidity95%~rh
weatherproof waterproof