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KVH 20米X波段卫星通信地球站天线 20米X通信卫星天线 20m X-Band ANTENNA   20m X-Band ANTENNA （OEM）     R.F Specifications 20M GREGORAIN ANTENNA With 4-PORT 2Tx/2Rx Circular Pol FEED X-Band Receive Transmit Frequency in GHz 7.25-7.75 7.9-8.4Ghz Gain 61.7+ 20lg[f(GHz)/7.5] 62.5 + 20lg[f(GHz)/8.25] Antenna Noise Temp.   5°Elevation 74k with TRF 10°Elevation 65k with TRF 20°Elevation 58k with TRF 40°Elevation 54k with TRF Sidelobe Pattern First sidelobe level ≤-14dB Beyond first sidelobe meet IESS(Intelsat) or CCIR 580 VSWR 1.25:1 Axial Ratio 1.09:1 1.09:1 3dB Beamwidth 0.14Deg 0.127Deg Polarization RHCP/LHCP LHCP/RHCP Feed Insertion or Ohmic Loss 0.70 dB 0.70dB Power Handling Capability 1kw cw Port to Port Isolation   Tx to Rx ³70dB(with TRF) Rx to Rx ³20dB Tx to Tx ³20dB Feed Interfaces WR112 WR112 R.F Specifications 16M Dual Shaped Cassegrain Antenna With 4-PORT 2Tx/2Rx Circular Pol Feed X-Band Receive Transmit Frequency in GHz 7.25-7.75 7.9-8.4Ghz Gain 59.7+ 20lg[f(GHz)/7.5] 60.5 + 20lg[f(GHz)/8.25] Antenna Noise Temp.   5°Elevation 74k with TRF 10°Elevation 65k with TRF 20°Elevation 58k with TRF 40°Elevation 54k with TRF Sidelobe Pattern sidelobe level ≤-14dB meet IESS(Intelsat) or CCIR 580 VSWR 1.25:1 1.25:1 3dB Beamwidth 0.175Deg 0.159Deg Axial Ratio 1.09:1 1.09:1 Feed Insertion or Ohmic Loss 0.70dB 0.70dB Power Handling Capability 1kw Port to Port Isolation   Tx to Rx ³70dB(with TRF) Rx to Rx ³20dB Tx to Tx ³20dB Feed Interfaces WR112 WR112 R.F Specifications 16M Dual Shaped Cassegrain Antenna With 4-PORT 2Tx/2Rx Linear POL Feed C-Band Receive Transmit Frequency in GHz* 3.625-4.200 5.850-6.425 Gain 55+ 20lg[f(GHz)/4] 58.2+ 20lg[f(GHz)/6] Antenna Noise Temp.   5°Elevation 48k with TRF 10°Elevation 36k with TRF 20°Elevation 29k with TRF 40°Elevation 24k with TRF Sidelobe Pattern sidelobe level ≤-14dB Cross Pol. Discrimination 35dB (On axis) 30dB (within 1 dB Beamwidth) VSWR 1.30:1(LP) 1.25:1(CP) 1.30:1(LP) 1.25:1 (CP) 3dB Beamwidth 0.30º 0.20º Axial Ratio 1.06:1 1.06:1 Feed Insertion or Ohmic Loss 0.30dB 0.30dB Power Handling Capability 5kw cw per port Port to Port Isolation   Tx to Rx ³85dB(with TRF) Rx to Rx ³30dB Tx to Tx ³30dB Feed Interfaces CPR-229G CPR-137G R.F Specifications 16M Dual Shaped Cassegrain Antenna With 4-PORT 2Tx/2Rx Linear POL Feed Full C-Band Receive Transmit Frequency in GHz 3.4 -4.200 5.850-6.65 Gain 54.8+ 20lg[f(GHz)/4] 58.2+ 20lg[f(GHz)/6] Antenna Noise Temp.   5°Elevation 54k with TRF 10°Elevation 46k with TRF 20°Elevation 36k with TRF 40°Elevation 30k with TRF Sidelobe Pattern First sidelobe level ≤-14dB Wide sidelobes meets IESS, Eutelsat and CCIR 580. Cross Pol. Discrimination 35dB (On axis) 30dB (within 1 dB Beamwidth) VSWR 1.30:1(LP) 1.25:1(CP) 1.30:1(LP) 1.25:1 (CP) 3dB Beamwidth 0.30º 0.20º Axial Ratio 1.06:1 1.06:1 Feed Insertion or Ohmic Loss 0.30dB 0.30dB Power Handling Capability 5kw cw per port Port to Port Isolation   Tx to Rx ³85dB(with TRF) Rx to Rx ³30dB Tx to Tx ³20dB Feed Interfaces CPR-229G CPR-137G     Antenna Specifications Mechanical Specifications Azimuth Travel 180°(in two overlapped 100°deg sectors) Travel Rate for Az and El 0.1°/second Elevation Travel 0°to 90°Continuous Elevation Travel Rate 0.1°/second * Tracking travel rate for Az and El 0.01°/second Reflector Steel Pedestal Structure Steel Finish Aluminium panels with high-diffusive white paint, steel part with Hot-Zinc Spray Physical Ambient Temperature -40ºC to 60oC (survival) , -15ºC to 50oC (Operational) Operational Wind 72km/h gusts to 97km/h Survival Wind 200km/hm Rain up to 4 in/h(10cm/h), lasting 10 minutes Relative Humidity up to with condensation Solar Radiation 1000 kcal/M2/h Radial Ice (Survival) 25mm on all surface or 13mm on all surface with 130km/h wind gusts 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’s horizontal 0.1G’s vertical