NO项目 (Item)特性(Specifications)PostEnvironmental Tolerance(环境试验后允许附加误差)1接收频率范围（MHz）Range of Receiving Frequency1575.42 1.1 2.52中心频率(30*30m㎡蔽时)Center Frequency(MHz)（with 30mmSpuareGND plane）1575.42 3.03带宽 Band Width(MHz)(Retum Loss -10dB) 10 0.54驻波比V.S.W.R(in Center Frequency) 1.5 0.55增益Gain (Zenith)(dBi typ)(with 70mmSquare GND plane)4.5 0.56轴比 Axial Ratio(with 70mm Square GND plan)3.0dB 0.27偏振方式 Polarization右旋圆极化Right-Handed Circular----8特性阻抗Impedance( )50----9频率温度系数(ppm/℃)Frequency Temperature Coefficient0 10----