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 850/900/1800/1900mhz
typical gain2dbi+/-1db@850mhz
2dbi+/-1db@900mhz
1dbi+/-1db@1800mhz;1dbi+/-1db@1900mhz
v.s.w.r 2.0:1
impedance 50 ohm
（iii）lna/filter
lna gain(without cable) 13db/26db/28db/other 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 5ma /11ma/15ma max
（iv）mechanical
weight ＜130gram
size 70mmx70mmx14mm
cable gps-----rg174 2meter, 5meter long or other
gps-----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 sticking /magnetic /hole 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