4.5 meter earth station antenna
Characteristics:
1.Conform to the CCIR580-4 standards and INTELSAT access requirements;
2.Ring focus antenna;
3.High gain, Low sidelobe, high G/T value;
4.Hot-dip zinc processed Antenna mount, with strong corrosion resistant ability;
5.Optional C band with 870 MHZ bandwidth;
6.2 Port or 4 Port Linear/Circular feed optional;
7.Automatic feed switching system for Linear and circular polarization;
8.Antenna azimuth ±65° continuous rotation
Electrical Specfications:
|
Type
|
NS-SEC-450
|
NS-SEC-450KU
|
|
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
|
44
|
47.3
|
53.2
|
54.3
|
|
Polarization
|
Linear or Circular
|
Linear
|
|
XPD(on axis),dB
|
35
|
35
|
35
|
35
|
|
Axial Ratio(2 port)
|
1.30
|
1.09
|
/
|
/
|
|
Axial Ratio(4 port)
|
1.06
|
1.06
|
/
|
/
|
|
VSWR
|
1.25:1
|
1.25:1
|
1.25:1
|
1.25:1
|
|
Antenna Noise Temperature
10°Elevation
30°Elevation
50°Elevation
|
34°K
22°K
21°K
|
/
|
51°K
41°K
38°K
|
/
|
|
Typical G/T ( El.>10°)
|
25.9 dB/°K
(30°L N A )
|
/
|
32.3 dB/°K
(70°L N A )
|
/
|
|
-3dB Beam width, Mid-Band
|
1.05°
|
0.72°
|
0.37°
|
0.33°
|
|
Tx. Power Capability, KW
|
/
|
5
|
/
|
2
|
|
Feed interface
|
CPR-229G
|
CPR-137G
|
WR-75
|
WR-75
|
|
Feed Insertion Loss, dB
|
≤0.2
|
≤0.2
|
≤0.2
|
≤0.25
|
|
Rx-Rx, Tx-Tx Linear, dB
|
30
|
30
|
30
|
30
|
|
Tx-Tx, Rx-Rx Circular, dB
|
21
|
21
|
/
|
/
|
|
Isolation, Tx to Rx, dB
|
90
|
85
|
|
First Sidelobe
90% Peaks under Following envelop
|
-14
29 - 25 logθ(1°≤θ<20°)
|
-14
29 - 25 logθ(1°≤θ<20°)
|
Mechanical Specfications;
|
Antenna Diameter
|
4.5m
|
|
Antenna Type
|
Ring Focus
|
|
Mount Type
|
El. Over Az.
|
|
Surface Accuracy(RMS)
|
≤0.5 mm
|
|
Weight(Net)
|
988 kg
|
|
Antenna Pointing Range(Continuous)
Azimuth
Elevation
Polarization
|
±65°(Continuous)
0°~90°(Continuous)
±90°(Continuous)
|
|
Drive Mode
|
Manual or Motorized
|
|
Motor Drive System
Azimuth Travel Rate
Elevation Travel Rate
Polarization speed
|
0.11°/S
0.17°/S
1°/S
|
Environmental Specfications:
|
Wind speed of work
|
72kmph work wind speed(Hold the precision )
97kmph work wind speed(Lower the precision )
200kmph Survival Winds(Upturned lock)
|
|
Ice Load, Survival
|
13mm Wrapped ice normal work
25mm Wrapped ice survival
|
|
Temperature
|
-30°C~50°C
|
|
Relative Humidity
|
100%
|
|
Surface treatment
|
Steel parts: thermal-spraying zinc
Aluminum parts:spray paint
|
|
Solar Radiation
|
1135Kcal/h/m2
|
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