GPS天线：一、天线特性AntennaSpecification型号特性G202A中心频率CenterFrequency1575.42MHz电压驻波比V.S.W.R 1.5带宽BandWidth 10MHz 天线极化Polarization右旋极化阻抗Impendence50 二、放大器规格LNASpecification放大器增益LNAGain(Withoutcable) 26 2dB 噪声系数NoiseFigure 1.5dB输出电压驻波比V.S.W.R＜2.0直流电压DCVoltage3.0 0.3VDC；5.0 0.5VDC 3.3 0.3VDC直流电流DCcurrent 20mA 三、结构特性MechanicalSpecification重量Weight＜100(克)gram外型尺寸Size46 39 13.5mm(G203A)电缆CableRG174 3米连接器型号ConnectorSMAMALE连接器材质黄铜棒HPb59-1 GB3110镀金固定方式Mounting磁吸式Magneticbase外壳颜色Housing黑Black外壳封装防水防尘四、环境特性EnvironmentalSpecification工作温度WorkingTemp-40℃~+85℃极限温度StorageTemp-40℃~+90℃振动VibrationSinesweep1g(0-p)10~50~10Hzeachaxis湿度Humidity95%无冷凝防水WaterproofIP66M（GB4208-84,密封，防浸水）可靠性 MTBF=1 10-6/pc.hr40℃ 5℃ DC=3.3v