13.0m Antenna
C-Band 4-Port 2Tx/2Rx
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The 13.0m antenna system, designed and manufactured with CAD, can be applied to the newly updated INTELSAT (IESS) standard earth station. The antenna system consists of dual shaped Cassegrain reflectors, a frequency reuse feed network with corrugated horn, an elevation-over-azimuth limit motion kingpost pedestal. The backup structure for the reflector, the hub connecting the main reflector with mount and the pedestal provides the guaranteed pointing accuracy required in normal operation.
The main reflector diameter consists of 80 precision stretch formed aluminum panels riveted with the rings and radials in three rings.
Antenna system is characteristic of high gain, low sidelobes, low cross polarization, capable for frequency reuse both in transmit and receive bands, high driving/control accuracy with angle position display in high resolution.
The radiation patterns meet the associated requirements of INTELSAT (IESS), FCC and CCIR for 2 degree spacing location of geostationary satellites.
- Frequency Range
- Rx: 3.625 - 4.200 GHz
- Frequency Range
- Tx: 5.850 - 6.425 GHz
- Frequency Range
- Rx: 3.4 - 4.20 GHz
- Frequency Range
- Tx: 5.85 - 6.65 GHz
- Gain
- Rx: 53.1 dB min.; Tx: 56.6 dB min.
- Antenna Noise Temperature
- 54K @ 5° Elevation
- Antenna Noise Temperature
- 46K @ 10° Elevation
- Antenna Noise Temperature
- 36K @ 20° Elevation
- Antenna Noise Temperature
- 30K @ 40° Elevation
- V S W R
- Rx: 1.3:1 (LP); 1.25:1 (CP)
- V S W R
- Tx: 1.3:1 (LP); 1.25:1 (CP)
- Sidelobe Pattern
- First sidelobe level less than -14dB
- Sidelobe Pattern
- Beyond first sidelobe meet IESS(Intelsat) or CCIR 580-4 Recommendation
- Cross Pol. Discrimination
- 35dB (On axis) ; 30dB (within 1 dB Beamwidth)
- Axial Ratio (CP only)
- Rx: 1.06:1; Tx: 1.06:1
- Feed Insertion Loss
- Rx: 0.30 dB; Tx: 0.30 dB
- Power Handling Capability
- 3 KW CW per Tx port (5 KW CW high power per port optional)
- Port to Port Isolation
- Tx/Tx: 30 dB (LP)
- Port to Port Isolation
- Tx/Rx: 85 dB min. (with TRF)
- Port to Port Isolation
- Tx/Tx: 22 dB min. (CP)
- Feed Interfaces
- Rx: CPR-229; Tx: CPR-137
- Azimuth Travel
- 180° in two 100° in overlapping sectors continuous
- Azimuth Travel Rate
- 0.1°/second
- Elevation Travel
- 0 to 90°
- Elevation Travel Rate
- 0.1°/second
- Polarization Travel
- ±45°
- Polarization Travel Rate
- 1.0°/second
- Reflector
- Steel
- Backup Structure
- Steel
- Pedestal Structure
- Steel
- Operation Wind
- 45 mph (72 km/h) gusts to 60 mph (97 km/h)
- Survival Wind
- 200km/h
- Ambient Temperature
- Operational: -15°C to +50°C
- Ambient Temperature
- Survival: -30°C to +60°C
- Rain
- up to 4 in/h (10 cm/h), lasting 10 minutes
- Relative Humidity
- up to 100%
- Radial Ice (Survival)
- 25mm on all surface or 13mm on all surface with 130km/h wind gusts
- Shock & 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’s horizontal
- Seismic (Survival)
- 0.1G’s vertical
Specific References
C-Band 4-Port 2Tx/2Rx