性能指标Performance型号Model北斗车载指挥机天线DY-BDTRT47P45A工作频率OperatingFrequencyBDRBDT极化方式Polarization右旋圆极化Right-HandCircularPolarization左旋圆极化Left-HandCircularPolarization增益Gain(dB)仰角Elevation90°46仰角Elevation20°≥1仰角Elevation10°≥-2方向图Pattern水平Horizontal全向Omnidirectional垂直Vertical半球Hemisphere轴比AxisRatio(dB)仰角Elevation>20°≤3驻波比VSWR≤1.4:1接收增益ReceiveGain(dB)41发射功率Tran***itPower(W)10/30噪声系数NoiseFigure(dB)2端口隔离度PortIsolation(dB)>70工作电压OperatingVoltage(V)28工作电流OperatingCurrent(A)2/3工作温度OperatingTemperature(℃)-40~+70接头形式ConnectionType***A-K外形尺寸Dimensi***(mm)Φ190×100)