3.7 Meter Satellite Communications Antenna
ELECTRICAL SPECIFICATION
|
C-Band |
Ku-Band | |||
|
Receive |
Transmit |
Receive |
Transmit | |
|
Operating Frequency, GHz |
3.625～4.2 |
5.85～6.425 |
10.95～12.75 |
13.75～14.5 |
|
Gain, Mid-band, dBi |
42.2 |
45.4 |
51.4 |
52.7 |
|
Polarization |
Linear/ Circular |
Linear | ||
|
XPD (on Axis), dB |
35 |
35 |
35 |
35 |
|
XPD across 1dB Beam Width, dB |
33 |
33 |
33 |
33 |
|
Axial Ratio (Circular-Polarized)
2-Port Feed
4-Port Feed |
1.30
1.06 |
1.09
1.06 |
||
|
VSWR |
1.25 |
1.25 |
1.25 |
1.25 |
|
Antenna Noise Temperature, 2-port feed
10° Elevation
30° Elevation
50° Elevation |
35°K
29°K
25°K |
30.6dB/°K
( 70° LNA ) |
||
|
-3dB Beam Width, Mid-band |
1.25° |
0.82° |
0.38° | |
|
Typical G/T ( El＞10° ) |
24dB/°K
( 30° LNA ) |
|||
|
Tx. Power Capability, KW |
5 |
2 | ||
|
Feed Interface |
CPR-229G |
CPR-137G |
WR-75 |
WR-75 |
|
Isolation, Tx to Rx, dB |
90 |
85 | ||
|
First Sidelobe
90% Peaks under Following Envelop |
-14
29-25logθ(1°≤θ＜20° ) |
-14
29-25logθ (1°≤θ＜20° ) | ||
Mechanical Specification
|
Antenna Diameter |
3.7m |
|
Antenna Type |
Ring Focus |
|
Mount Type |
El. Over Az. |
|
Surface Accuracy (RMS) |
≤ 0.5mm |
|
Antenna Pointing Range
Azimuth
Elevation
Polarization |
±90°, ±60 °(Continuous)
0°～90°(Continuous)
180°(Continuous) |
|
Drive Mode |
Manual or Motorized |
|
Motor Drive system
Azimuth Travel Rate
Elevation Travel Rate
Polarization |
0.30°/S ( 0.06°/S )
0.20°/S ( 0.04°/S )
1o/S |
Environmental Specification
|
Operational Wind |
72km/h Gusting to 97km/h |
|
Survival Wind |
216km/h |
|
Temperature |
- 40°C ～ + 60°C |
|
Relative Humidity |
100% |
|
Solar Radiation |
1135Kcal/ h/ m2 |
|
Seismic (Survival) |
0.3g (H), 0.15g (V) |
|
Ice Loading |
13mm Operational; 25mm Survival |