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1.8米卫星通信天线
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1.8m Offset-Feed Antenna, Technical Specifications
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Electric Specifications
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Ku-band Reception
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Ku-band Transmission
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电气指标
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Ku-接收
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Ku-发射
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Frequency (GHz)
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频率
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12.25－12.75
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14-14.5
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Gain (dB)
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增益
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45.2
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46.4
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SWR
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驻波比
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1.25：1
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1.25：1
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Beamwidth:-3dB
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波束宽度
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0.47
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0.38
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Antenna Noise Temperature
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天线噪声温度
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2-port feed
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2-端口 馈源
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10° Elevation
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50
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20° Elevation
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44
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40° Elevation
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38
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Power Handling Capability
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功率容量
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1Kw/port
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Feed Interface
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接口形式
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WR-75
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Feed Insertion (dB)
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馈源插损
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0.25
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0.25
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T-R isolation (dB)
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收发隔离
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Cross Polarization Isolation (dB)
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交叉极化隔离
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（ 0 dB）
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35
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35
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(1 dB)
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33
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33
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Axial ratio, (dB)
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轴比
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0.5
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0.5
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Sidelobe envelope
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副瓣包络
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CCIR.580-4
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Mechanical Specifications
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机械性能
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Azimuth Range
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方位范围
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±60°
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Elevation Range
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俯仰范围
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5° to 90°
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Foundation Parts
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预埋件
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Surface Accuracy
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表面精度
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0.3mm
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Coating
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喷漆
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Spray-paint(white)
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Environmental Specifications
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环境特性
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Operating Wind Speed
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工作风速
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20m/s (72km/h)
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To 27m/s (97km/h)
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Max Wind Speed
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生存特性
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55.6m/s (200km/h)
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Ambient Temperature
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温度
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－ 30° to 60°
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Relative Humidity
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湿度
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0% to
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Vibrations
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地震
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0.3G, horizontal
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0.15G, vertical
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