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四，天线特性
NO 项目(Item) 特性(Specifications) PostEnvironmental Tolerance(试验后允许附加误差)
1 接收频率范围(MHz)
Range of Receiving Frequency 1575,42+1.1 ±2.5
2 中心频率(30*30m㎡蔽时) Center Frequency(MHz)
(with 30mmSpuareGND plane) 1575.42 ±3.0
3 带宽 Band Width(MHz)(Retum Loss<-10dB) ≥10 ±0.5
4 驻波比VS.WR(in Center Frequency) ≤2.0 ±0.5
5 增益Gain(Zenith)(dBityp)(with 70mmSquare GND plane 4.5 ±0.5
6 轴比Axial Ratio
(with 70mm Square GND plan) 3.0dB ±0.2
7 偏振方式Polarization 右旋圆极化
Right-Handed Circular
8 特性阻抗Impedance(Ω) 50
9 频率温度系数(ppm/℃)
Frequency Temperature Coefficient 0±10
五.放大器特性
NO 项目(Item) 特性(Specifications)
1 频率范围 1575.42MHz
2 放大器增益 27dB
驻波比 ≤2.0
3
4 噪声系数 ≤2.0dB
5 直流电压 3~5V
直流电流 5士2mA
6
一.天线特性antennaperformance
项目Ltem 特性Performance
接收频率范围Range ofReceiviing
Frequency BDB1:1561mhz
GPSL1:1575.42mhz GLONASSL1:1602+2mhz
增益Peak Gain 4.5dbi
驻波比V.S.W.R ≤1.5
轴比AxiaLRatio 3.0dB
宽带BandWidth ≥10mhz
特性阻抗Impedance 50Ω
偏振方式PoLarization 右旋圆极化
频率温度系数(ppm/C)Frequency Temperature Coefficient 0±10 |
