1. Overview of 4.2M S/X-band Remote Sensing Antenna
4.2M S/X band Remote Sensing Satellite Receiving antenna with model of ATSK-SX420 from Antesky is used to receive signals from middle and low orbit satellites, and complete the reception of signals from remote sensing satellites by the ground receiving system of remote sensing satellites.
ATSK-SX420 4.2m Remote Sensing Satellite Receiving antenna is applied for receiving oceanic, meteorological and remote sensing satellites.The antenna adopts standard paraboloid, X-Y axis pedestal, antenna reflector has mesh, aluminum plate or aluminum plate aperture form, the whole antenna system structure is divided into antenna reflector, X axis, Y axis and pedestal as four parts. The antenna can work in L, S or X band, or L/X or S/X band. The tracking mode includes program tracking and auto tracking.
2. Key Features of 4.2M S/X band Remote Sensing Antenna
- X-Y axis pedestal eliminates overhead pass “keyhole”
- High G/T value using dual shaped optics;
- Automated operation and diagnostics;
- High polarization isolation;
- Automatic control system.
3. Technical specification of 4.2M S/X band Remote Sensing Antenna
1 Antenna Electrical Characteristics
| Item | Description | ||
| S band | X band | ||
| Frequency | Tx: 2.025 – 2.120GHz
Rx: 2.2 – 2.3GHz |
Rx 8.0 – 8.5GHz | |
| Gain (f：GHz) | ≥35.8 +20log(f/2.025) dBi
≥36.5 +20log(f/2.2) dBi |
≥48.0+20log(f/8.0) dBi | |
| G/T (dB/k) at El 5°
(mounted in radome) |
S-band:≥13.5 | X-band:≥25.6 | |
| First Sidelobe | ≤-14dB | ||
| Polarization | RHCP and LHCP | ||
| VSWR (at feed port) | ≤1.3 | ≤1.35 | |
2 Antenna Mechanical Characteristics
| Item | Description |
| Antenna Type | X-Y Geometry |
| Antenna model | ATSK-SX420 |
| Antenna Diameter (m) | 4.2 |
| Mount Type | Limited Motion Antenna |
| Driving Chain | X: AC motor
Y: AC motor |
| Tracking | Program tracking, auto tracking |
| Travel range | X/Y: ±90° |
| Antenna Accessorial Parts and Interface | Hot Dip Galvanized |
| No painting | |
| Foundation Hardware |
3 Antenna Servo Control and Tracking Characteristics
| Item | Description |
| Antenna velocity | up to 5°/s |
| Drive Acceleration | up to 5°/s2 |
4 Antenna Environmental Conditions and Other Features
| Item | Description | Remark |
| Temperature | -40°C～+50°C | |
| Relative Humidity | 0%～100% | |
| Rain | 300mm/h | |
| Wind performance | 67m/s | mounted in radome |
| Others | Packing (sea freight) | |
| Installation | ||
| 12 months warranty | ||
4. Pedestal of 4.2m S/X-band Remote Sensing Antenna
X-Y antenna pedestal is mainly composed of X-axis device, Y-axis device and the pedestal. The structure of X-axis device and Y-axis device is basically the same, mainly including Az/El gear, left and right arms, reducer, servo motor, encoder, electromechanical limit device and other parts.
5. Working principle of 4.2m S/X-band Remote Sensing Antenna
6. Package of 4.2m S/X-band Remote Sensing Antenna
- Packed in customized rigid plywood cases
