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20M Earth Station Antenna
 
 


Earth Station Antenna  20M

Antesky 20-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.


Features of 20M 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.

Specification for 20M Earth Station Antenna

Electrical Specification

Antenna

20M 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)

60.30+20lg [f/6(GHz)]

56.85+20lg [f/4(GHz)]

60.20+20lg [f/6(GHz)]

56.75+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

48K

36K

29K

24K

 

54K

46K

36K

30K

 

-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:First 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

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)

20M Earth Station Antenna()