Overview
Features
- The General Dynamics SATCOM Technologies 9.0-meter antenna delivers exceptional performance for transmit/ receive and receive only applications for L through Ka-band frequencies. This antenna offers a reflector design that incorporates precision-formed panels, truss radials and hub assembly using matched tooling for interchangeable components. It features an innovative Cassegrain feed and subreflector design which results in high gain, low noise temperature, high antenna efficiency and excellent rejection of noise and microwave interference. A large center hub provides spacious accommodation for equipment mounting. The reflector is supported by a galvanized elevation over azimuth kingpost pedestal that provides the required stiffness for pointing and tracking accuracy. The pedestals are designed for full orbital arc coverage and are readily adaptable to ground or rooftop installations. The electrical performance is compliant with FCC 25.209 regulations, ITU-RS-580 sidelobe specifications and Intelsat (F3) and Eutelsat requirements.
Options
L, S, C, X, Ku, DBS and Ka-band feed configurations C/Ku receive-only feed systems CP/LP manual or remote switchable feeds Specialized feed systems (e.g. extended, multi-band) Antenna control system with tracking Reflector and feed deicing systems Environmental hub configurations Integrated transmit cross-axis kits Integrated LNA or LNB systems HPAs, converters and M&C systems Load frame mounts Packing for sea and air transport Turnkey installation and testing
Spesifications
Model 9.0m Cassegrain Antenna
Technical Specifications
Frequency (GHz) 3.625 – 5.850 – 3.625 – 5.850 – 3.400 – 5.850 – 10.700 – 13.750 – 10.700 – 17.300 – 4.200 6.425 4.200 6.425 4.200 6.725 12.750 14.500 12.750 18.400
Antenna Gain, Midband dBi (2) 50.00 53.70 50.10 53.60 49.90 53.70 58.50 60.10 58.80 61.50
VSWR 1.25:1 1.25:1 1.25:1 1.25:1 1.30:1 1.30:1 1.30:1 1.30:1 1.30:1 1.30:1
Pattern Beamwidth (2) -3 dB, at midband 0.54° 0.35° 0.53° 0.36° 0.54° 0.35° 0.18° 0.16° 0.19° 0.14° -15 dB, at midband 1.13° 0.73° 1.11° 0.76° 1.13° 0.73° 0.38° 0.34° 0.40° 0.29°
Antenna Noise Temperature 5° Elevation 52 K 47 K 55 K 90 K 81 K 10° Elevation 43 K 37 K 45 K 76 K 66 K 20° Elevation 37 K 32 K 40 K 68 K 57 K 40° Elevation 35 K 30 K 38 K 64 K 53 K
Typical G/T (dB/K) (3) 4.000 GHz, 30 K LNA 31.7 32.2 31.4 11.725 GHz, 70 K LNA 37.1 37.8
Axial Ratio 0.50 dB 0.50 dB
Power Handling (total) 10 kW CW 5 kW CW 10 kW CW 2 kW CW 2 kW
CW Cross Polarization Isolation On Axis 30.8 dB 30.8 dB 35.0 dB 35.0 dB 35.0 dB 35.0 dB 35.0 dB 35.0 dB 35.0 dB 35.0 dB Within 1.0 dB beamwidth 30.8 dB 30.8 dB 32.0 dB 32.0 dB 30.0 dB 30.0 dB 35.0 dB 35.0 dB 35.0 dB 30.0 dB Port to Port Isolation Rx/Tx (Rx frequency) 0 dB -70 dB 0 dB -70 dB 0 dB -70 dB 0 dB -70 dB 0 dB -75 dB Tx/Rx (Tx frequency) -85 dB 0 dB -85 dB 0 dB -85 dB 0 dB -85 dB 0 dB -85 dB 0 dB
Sidelobe Performance Meets ITU-RS-580,
FCC RF Specification 975-1642 975-1717 975-1789 975-2275 975-2407
