KVH 30米网状卫星天线  30米天网卫星天线   特性: 铝网 栅式底座组装 拉伸成形铝反射面 C、Ku波段可选 线、圆极化可选 单极化、双极化可选 手动、电动可选 抗腐 产品可定制   30 M天线的特点 1.可选的C波段，ku波段，ka波段频率; 2.线性或圆形极化进料系统作为选项; 3. 2端口或4端口可供选择; 4.主反射器采用形卡塞格伦天线，低噪声温度和低旁瓣。 5.馈电喇叭具有波纹喇叭，宽波束宽度和极化。 6.反哈希环境能力; 7.交流调速电机驱动控制系统。 30M Earth Station Antenna Electrical Specification Antenna 30M Earth Station Antenna Operating Frequency, GHz Receive Transmit Receive Transmit 3.625 to 4.2 5.85 to 6.425 3.4 to 4.2 5.85 to 6.65 Antenna Gain, dBi: Tx(at Tx port to feed) Rx((at Rx port of feed) 66.30+20lg [f/6(GHz)] 64.85+20lg [f/4(GHz)] 66.20+20lg [f/6(GHz)] 64.75+20lg [f/4(GHz)] Cross Polarization Isolation for LP On Axis: 35dB, Within 1dB beamwidth:30dB Axial Ratio (dB) for CP 0.5dB per port VSWR CP:1.25:1    LP:1.3:1 Antenna Noise Temperature: 5deg Elevation 10deg Elevation 20deg Elevation 40deg Elevation 58K 50K 45K 39K   64K 57K 48K 43K   -3dB Beam Width(deg) 0.24 0.16 0.24 0.16 Total Power Handling Capability 5kw (cw) per Tx port Feed Interface CPR-229G CPR-137G CPR-229G CPR-137G Feed Insertion Loss, dB 0.3 0.3 0.3 0.3 Port to Port Isolation: Tx to Rx(Tx Freq) Rx to Rx Tx to Tx(Same Band) 85dB CP: 20dB  LP: 30dB CP: 20dB  LP: 30dB Radiation Pattern:Sidelobe CCIR.580 Mechanical Specification Azimuth 0 to170deg continuousw.r.t true south Elevation 5 to 90deg (continuous) Finishes: Reflector Surface         Pedestal & Back Structure Aluminum panels with high-diffusing white paint Galvanized steel Surface Accuracy 0.7mm (R.M.S) Environmental Specification Operational Wind 79km/h Gusting to 120km/h Survival Wind 250km/h Rain Up to 100mm/h operational and survival Relative Humidity Up to  operational and survival Temperature - 50Deg.c  to  +70Deg.c Radial Ice(Survival) 25mm on all surface Shock and Vibration As encountered during shipment by commercial air, sea, or truck Corrosive atmosphere As encountered in coastal regions and/or heavily industrialized areas Seismic (Survival) 0.3g (H), 0.15g (V)