3.7 METER EARTH STATION RING FOCUS ANTENNA
General description
STARWIN 3.7m RX/TX antenna is specially designed for Receive and Send Antenna with good
TV signal performance with diameter of 3.7m, which is made of high accuracy stretch-formed aluminum panel with stable back structure, sub-reflector, pedestal/mount and feed
system. The 3.7m RX/TX antenna systems features with satisfactory performance of high gain,
low side lobe and reliable operation, easy to operate and maintenance. The 3.7m antenna can
work well with its corresponding LNB and Antenna Receiver, which used to Receive and Send
C band and Ku band satellite signal.
Options
Ø High Accuracy Stre tch-formed Aluminum Panel
Ø C-band, ku-band as option
Ø Linear or Circular Polarized feed system as option
Ø Single/Dual Polarization as option
Ø Manual/Motorized as option
Ø High Erosion Resistance
Ø Assembled and tested feed system before leaving factory
ELECTRICAL SPECIFICATION
C-Band | Ku-Band | |||
Receive | Transmit | Receive | Transmit | |
Operation Frequency, GHz | 3.4~4.2 | 5.85~6.725 | 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) | 1.30 | 1.09 | ||
VSWR | 1.25 | 1.25 | 1.25 | 1.25 |
Antenna Noise Temperature 10°Elevation 30°Elevation 50°Elevation |
35°K 29°K 25°K |
49°K 39°K 35°K | ||
-3dB Beam width, Mid-band | 1.25° | 0.82° | 0.44° | 0.38° |
Typical G/T(EL>10°) | 24dB/°K (30°LNA) | 30.6dB/°K (70°LNA) | ||
TX. Power Capability, KW | 5 | 2 | ||
Feed Interface | CPR-229G | CPR-137G | WR-75 | WR-75 |
Feed Insertion Loss | 0.2 | 0.2 | 0.25 | 0.2 |
Isolation, TX to Rx, dB | 90 | 85 | ||
First Side lobe 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) 360° (Continuous) |
Drive Mode | Manual/Motorized |
ENVIRONMENTAL SPECIFICATION
Operational Wind | 72 km/h Gusting to 97 km/h |
Survival Wind | 216 km/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 |
