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Description
Description
Alignsat 1.8m antenna delivers exceptional high performance for transmit/receive application in C ,Ku, ka, X band in Tx/Rx 2 port or Rx 2 port with high gain ,low noise and low microwave interference.
The electrical performance is compliant with FCC and ITU-RS-580 side lobe specifications and Intelsa, Eutelsat, INMARSAT, ASIASAT, APT and CHINASAT, etc. requirement.
Performance Strength
- High quality aluminum reflector panels and galvanized steel backup structure.
- C, Ku, Ka, X band available, meeting FCC and ITU-RS-580 requirements.
- Galvanized steel elevation over azimuth pedestal.
- Fixed foundation and Non penetrating foundation optional for wider choice.
- Survives 125 mph winds in any position.
- High G/T, excellent pattern characteristic.
- Precision compression molded offset antenna.
- CP/LP switchable feed.
- Galvanized stainless steel fasteners.
| Electrical Specification | |||||
| Type | AT18C | AT18K | |||
| Operating Frequency, GHz | C-Band | Ku-Band | |||
| Receive | Transmit | Receive | Transmit | ||
| 3.625~4.2 | 5.85~6.425 | 10.95~12.75 | 13.75~14.5 | ||
| Gain, Mid-band, dBi | 35.5 | 39.5 | 45.3 | 46.5 | |
| Polarization | Linear/Circular | Linear | |||
| XPD(on Axis), dB | 35 | 35 | 35 | 35 | |
| XPD across 1dB Beam Width, dB | 33 | 33 | 33 | 33 | |
| Axial Ratio | 2-PortFeed | 1.30 | 1.09 | ||
| VSWR | 1.25 | 1.25 | 1.25 | 1.25 | |
| Antenna Noise Temperature 2-port feed 10° Elevation 30° Elevation 50° Elevation |
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| 39°K 29°K 26°K |
43°K 36°K 32°K |
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| -3 dB Beam Width, Mid-band | 2.88° | 1.9° | 0.87° | 0.74° | |
| Tx. Power Capability, KW | 5 | 2 | |||
| Feed Interface | CPR—229G | CPR—137G | WR-75 | WR-75 | |
| Feed Insertion Loss, dB | 0.2 | 0.2 | 0.25 | 0.2 | |
| Isolation, Tx to Rx, dB | 90 | 85 | |||
| First Side lobe 90% Peaks under Following Envelop | -14 29-25logθ(1°≤θ＜20°) |
-14 29-25logθ(1°≤θ＜20°) |
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| Mechanical Specification | |||||
| Antenna Diameter | 1.8m | ||||
| Antenna Type | Offset antenna | ||||
| Surface Accuracy（RMS） | ≤0.35mm | ||||
| Antenna Pointing Range | Azimuth | 0°~360°，±10° (Continuous) | |||
| Elevation | 0°~90°(Continuous) | ||||
| Polarization | ±360°(Continuous) | ||||
| Drive Mode | Manual or Motorized | ||||
| Motor Drive System | Azimuth Travel Rate | 0.30°/S(0.06°/S) | |||
| Elevation Travel Rate | 0.20°/S(0.04°/S) | ||||
| Antenna reflector Material | Aluminum Alloy | ||||
| Finish of steel parts | Hot dipped Zinc | ||||
| Environmental Specification | |||||
| Operational Wind | 72km/h gusting to 97km/h | ||||
| Survival Wind | 216km/h | ||||
| Temperature | -40°~+60° | ||||
| Relative Humidity | 100% | ||||
| Solar Radiation | 1135Kcal/h/m² | ||||
| Seismic(Survival) | 0.3g(H), 0.15g(V) | ||||
| Ice Loading | 13mm Operational; 25mm Survival | ||||