General Dynamics Satcom Technologies 1385 3.8M C-Band Circular Pol 1.3 VAR Tx/Rx Antenna System

by enteshari | February 10, 2021

GD Satcom 1385 3.8M C-Band Tx/Rx Antenna System

The GD Satcom 1385 3.8M C-Band Tx/Rx Antenna System from GD Satcom replaces the long-trusted GD Satcom 1383 Series.

GD Satcom 1385 Features

Upgraded Integral rib design for higher frequency operation
Increased strength for heavier radio and ODU equipment loads.
Higher precision assembly and alignment from automated manufacturing processes.
Field friendly installation without requirement for specialized tools.
Anti-ice capability for use in cold climate and arctic environmental conditions.
Optimized, 4-piece reflector design for maximum shipping efficiency.
Upgradeable for high XPD performance.

The GD Satcom 1385 3.8M Tx/Rx Antenna has been designed to provide a reliable, long-life and trouble free antenna solution for demanding applications in the primary VSAT communications bands. Enhancements to this antenna design have improved the structural stability and surface tolerances of the reflector, offering growth potential for reliable communications up to Ka-band.

The antenna has been designed to meet the performance requirements of the major satellite service providers and regulatory agencies.

The mechanical design has been optimized for high efficiency packaging to reduce shipping costs. Material selections for the reflector significantly reduce the risk for shipping damage when compared to metal reflector solutions. Factory pre-assembly of critical components eliminates the requirement for complex assembly procedures in the field.

Electrical Specifications for C-Band Linear
Antenna Size	3.8M
Operating Frequency Rx Tx	3.625 - 4.20 GHz 5.845 - 6.425 GHz
Midband Gain ( ± 0.5 dB) Rx Tx	41.80 dBi 46.30 dBi
VSWR Rx Tx	1.3:1 max (<-17.7 dB) 1.3:1 max (<-17.7 dB)
Pattern Beamwidth (in degrees at midband) -3 dB Rx Tx -15 dB Rx Tx	1.40 deg 0.9 deg 3.2 deg 2.0 deg
Sidelobe Performance 1°≤θ≤20° 20°<θ≤26.3° 26.3°<θ≤48° 48°≤θ<180°	29-25 log (θ) -3.5 dBi 32-35 log (θ) ≤-10 dBi averaged
Antenna Noise Temperature 5° Elevation 10° Elevation 20° Elevation 40° Elevation	62 K 52 K 45 K 43 K
Power Handling	1 kW
Cross Polarization Isolation On Axis Rx Tx Within 1.0 dB Beamwidth Rx Tx	>15 dB >17.7 dB >15 dB >17.7 dB
Output Waveguide Interface	Rx: CPR 229 F Tx: CPR 137 or N-Type
Mechanical Performance
Reflector Material	Glass Fiber Reinforced SMC
Antenna Optics	Easy-to-assemble, 4 Pc., Offset Fed Prime Focus Design with 0.6 F/D optics.
Mast Pipe Size	10" SCH 40 Pipe (10.75" OD) 27.3 cm.
Elevation Adjustment Range	12° to 90° or 0° to 15° for Polar Latitudes
Azimuth Adjustment Range	360° Continuous with +/-35° Fine Adjustment
Shipping Specifications Approximate Net Weight Approximate Packaged Weight	Weight (nominal) 1125 lbs. (511 Kg). Weight (nominal) 1882 lbs., (855 Kg).
Environmental Performance
Wind Loading Operational Survival	50 MPH (80 km/h) 125 mph (201 km/h)
Temperature Range (operational)	-40° to 140°F (-40° to 60°C)
Rain (operational)	½" (13mm) per hour
Ice (operational)	--------------------
Atmospheric Conditions	Salt, Pollutants and Contaminants as Encountered in Coastal and Industrial Areas
Relative Humidity	0 to 100% Condensing
Solar Radiation	360 BTU/h/ft²