Antesky 18.5-Meter earth station antenna system of trussed type search and track the satellite singles among the regulated operational frequency in the random, provides high gain and exceptional pattern characteristics as well as low VSWR. The reflector is a composite structure in which the panels are stretch-formed and riveted with its rings and ribs with high accuracy and supported with backups so as to meet the designed surface accuracy. Antesky earth station antenna systems are available for a wide range of applications including wireless telecommunication service providers, internet service provider, system operators and broadcasters throughout the world. Antesky is a professional Earth Station Antenna supplier.
Features of 18.5M Earth Station Antenna
1. Optional C-band, Ku-band, Ka-band frequency;
2. Linear or circular polarized feed system as option;
3. 2 port or 4 port available as option;
4. The main reflector adopts shaped cassegrain antenna and designed by advanced CAD technology so that the antenna can get high effective, low noise temperature and low sidelobe.
5. Feed horn has the characteristics of highly effective corrugated horn, wide beamwidth and highly-purified polarization.
6. High reliable and anti-hash environment ability;
7. The design is more humane, more convenient to operate.
8. Adopt AC speed motor drive control system, reliable and convenient to operate.
| Electrical Specification | |||||
| Diameter | 18.5M | ||||
| Operating Frequency, GHz | Receive | Transmit | |||
| 3.625-4.2 | 5.85-6.65 | ||||
| Antenna Gain, dBi | 56.23+20lgf/4 | 59.58+20lgf/6 | |||
| 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: 10deg Elevation | 36K | ||||
| -3dB Beam Width(deg) | 0.26 | 0.18 | |||
| Total Power Handling Capability | 5kw (cw) per Tx port | ||||
| Feed Interface | CPR-229G | CPR-159G/137G | |||
| Feed Insertion Loss, dB | 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 |
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| Radiation Pattern:First Sidelobe | CCIR.580 | ||||
| Mechanical Specification | |||||
| Azimuth | 170deg continuous（w.r.t true south） | ||||
| Elevation | 5 to 90deg | ||||
| Finishes: Reflector Surface
Pedestal & Back Structure |
Aluminum panels with high-diffusing white paint
Galvanized steel |
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| Surface Accuracy | 0.7mm (R.M.S) | ||||
| Environmental Specification | |||||
| Operational Wind | 72km/h Gusting to 100km/h | ||||
| Survival Wind | 200km/h | ||||
| Rain | Up to 100mm/h operational and survival | ||||
| Relative Humidity | Up to 100% operational and survival | ||||
| Temperature | – 40Deg.c to +60Deg.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) | ||||
