供应GPS授时天线

**定位系统授时天线规格书
GPS  Active  Antenna  Specification
一、	产品型号Product Model   CH-GPS-BNC-05
         原型号是(GAACY-C),所有参数未变
二、介质天线 Dieletric Antenna 
中心频率Center Frequency    1575.42MHz±3 MHz
电压驻波比           1.5:1
带宽Band Width              ±5 MHz
阻抗Impendence              50 ohm
较高增益Peak Gain           >3dBic  Based on 7×7cm ground plane
增益范围Gain Coverage       >-4dBic at –90°<0<+90°(over 75% Volume)
天线较化Polarization         RHCP
三、 放大器/滤波器LNA/Filter 
放大器增益LNA Gain(Without cable)  38dB Typical
噪声系数Noise Figure               1.5dB
滤波器带外衰减 Filter Out Band Attenuation (f0=1575.42 MHZ)
7dB Min     f0+/-20MHZ ; 
20dB Min    f0+/-50MHZ
30dB Min    f0+/-100MHZ
输出电压驻波比              <2.0
直流电压DC Voltage                3V , 5V,  3V to 5V
直流电流DC current               10mA    Max
四、结构Mechanical
重量Weight                          <140(克)gram
外型尺寸Size                         ?96×126mm;
电缆Cable                           RG58  8  to 100  meters
连接器型号Connector