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18.5M Earth Station Antenna

18.5M Earth Station Antenna

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, provids 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 suppliers.

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 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) 59.68+20lg [f/6(GHz)]56.23+20lg [f/4(GHz)] 59.58+20lg [f/6(GHz)]56.13+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 Elevation10deg Elevation20deg Elevation

40deg Elevation

48K36K29K

24K

54K46K36K

30K

-3dB Beam Width(deg) 0.26 0.18 0.26 0.18
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 RxTx to Tx(Same Band) 85dBCP: 20dB LP: 30dBCP: 20dB LP: 30dB
Radiation Pattern:First Sidelobe CCIR.580
MECHANICAL SPECIFICATION
Azimuth 170deg continuous(w.r.t true south)
Elevation 5 to 90deg
Finishes: Reflector SurfacePedestal & Back Structure Aluminum panels with high-diffusing white paintGalvanized steel
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
Copyright©2008,ANTESKY

Seismic (Survival)

0.3g (H), 0.15g (V)

 

18.5M Earth Station Antenna.pdf

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