4.5 METER EARTH STATION ANTENNA
General description
4.5m RX/TX antenna is specially designed for Receive and Send Antenna with good TV signal performance with diameter of 4.5m, which is made of high accuracy stretch-formed aluminum panel with stable back structure, sub-reflector, pedestal/mount and feed system. The 4.5m RX/TX antenna systems features with satisfactory performance of high gain, low side lobe and reliable operation, easy to operate and maintenance. The 4.5m 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
Specification for 4.5m Rx/TX antenna
Type | 45C | 45K | ||||
Operating Frequency, GHz | C band | Ku band | ||||
Receive | Transmit | Receive | Transmit | |||
3.4~4.2 | 5.85~6.725 | 10.95~12.75 | 13.75~14.5 | |||
Gain, Mid-band, dBi | 44 | 47.3 | 53.2 | 54.3 | ||
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) | 2-Port Feed 4-Port Feed | 1.30 1.06 | 1.09 1.06 | |||
VSWR | 1.25 | 1.25 | 1.25 | 1.25 | ||
Antenna Noise Temperature 2-port feed 10° Elevation 30° Elevation 50° Elevation |
34°K 24°K 21°K |
52°K 41°K 37°K | ||||
Typical G/T ( El＞10°) | 25.9dB/K° (30°LNA) | 32.3dB/K (70°LNA) | ||||
-3 dB Beam Width, Mid-band | 1.12° | 0.72° | 0.37° | 0.33° | ||
Tx. Power Capability, KW | 5 | 2 | ||||
Feed Interface | CPR—229G | CPR—137G | WR-75 | WR-75 | ||
Feed Insertion Loss, dB | 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 | 4.5m | ||
Antenna Type | Ring Focus | ||
Surface Accuracy(RMS) | ≤0.5mm | ||
Antenna Pointing Range | Azimuth Elevation Polarization | ±90°,±60°(continuous) 0°～ 90° (continuous) 180° (continuous) | |
Drive Mode | Manual or Motorized | ||
Motor Drive System | Azimuth Travel Rate Elevation Travel Rate Polarization Travel Rate | 0.11°/S(0.03°/S) 0.17°/S(0.04°/S) 1 ° / s | |
Antenna reflector Material | Aluminum Alloy | ||
Finish of steel parts | Hot dipped Zinc | ||
Environmental Specification | |||
Operational Wind | 72km/h gusting to 97km/h | ||
Survival Wind | 216km/h | ||
Temperature | -40°~+60° | ||
Relative Humidity | 100% | ||
Solar Radiation | 1135Kcal/h/m² | ||
Seismic(Survival) | 0.3g(H), 0.15g(V) | ||
Ice Loading | 13mm Operational; 25mm Survival | ||
